ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor2852432468 <...> Warning: Permanently added '10.128.0.173' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor2852432468", ["ci2-android-6-1/syz-executor2852432468"], 0x7ffc04c3f3e0 /* 10 vars */) = 0 brk(NULL) = 0x55555618f000 brk(0x55555618fe00) = 0x55555618fe00 arch_prctl(ARCH_SET_FS, 0x55555618f480) = 0 set_tid_address(0x55555618f750) = 305 set_robust_list(0x55555618f760, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-6-1/syz-executor2852432468", 4096) = 44 getrandom("\x62\x7c\x07\x83\x72\x7f\x0e\x28", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555618fe00 brk(0x5555561b0e00) = 0x5555561b0e00 brk(0x5555561b1000) = 0x5555561b1000 mprotect(0x7f5cd2dec000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 306 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "306", 3) = 3 close(3) = 0 kill(306, SIGKILL) = 0 ci2-android-6-1/strace-static-x86_64: Process 306 attached [pid 306] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=306, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f5cd2d2b170, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f5cd2d2b170, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 307 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 308 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 309 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 310 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 311 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 311 attached [pid 311] set_robust_list(0x55555618f760, 24) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 309 attached [pid 309] set_robust_list(0x55555618f760, 24 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 313 [pid 309] <... set_robust_list resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 309] close(3ci2-android-6-1/strace-static-x86_64: Process 313 attached ci2-android-6-1/strace-static-x86_64: Process 310 attached [pid 310] set_robust_list(0x55555618f760, 24 [pid 313] set_robust_list(0x55555618f760, 24 [pid 310] <... set_robust_list resumed>) = 0 [pid 313] <... set_robust_list resumed>) = 0 [pid 313] rt_sigprocmask(SIG_SETMASK, [] [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 313] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 308 attached ci2-android-6-1/strace-static-x86_64: Process 307 attached [pid 309] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 313] <... prctl resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 308] set_robust_list(0x55555618f760, 24 [pid 313] setpgid(0, 0 [pid 307] set_robust_list(0x55555618f760, 24 [pid 310] <... openat resumed>) = 3 [pid 308] <... set_robust_list resumed>) = 0 [pid 307] <... set_robust_list resumed>) = 0 [pid 313] <... setpgid resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 313] <... openat resumed>) = 3 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 314 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 308] <... openat resumed>) = 3 [pid 310] close(3 [pid 307] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 310] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 313] write(3, "1000", 4 [pid 308] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 313] <... write resumed>) = 4 [pid 308] close(3 [pid 307] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] close(3 [pid 313] close(3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 313] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 316 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 313] write(1, "executing program\n", 18 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 313] <... write resumed>) = 18 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 317 executing program [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 318 [pid 313] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 314 attached [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 313] <... futex resumed>) = 0 [pid 314] set_robust_list(0x55555618f760, 24) = 0 [pid 314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 314] setpgid(0, 0) = 0 [pid 314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 314] write(3, "1000", 4) = 4 [pid 314] close(3) = 0 [pid 314] write(1, "executing program\n", 18) = 18 [pid 314] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 314] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[319]}, 88) = 319 [pid 314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 314] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 318 attached [pid 318] set_robust_list(0x55555618f760, 24) = 0 [pid 318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 318] setpgid(0, 0) = 0 [pid 318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 318] write(3, "1000", 4) = 4 [pid 318] close(3) = 0 [pid 318] write(1, "executing program\n", 18) = 18 [pid 318] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 318] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[320]}, 88) = 320 [pid 318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 319 attached [pid 319] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 319] memfd_create("syzkaller", 0) = 3 [pid 319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 320 attached [pid 320] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 320] memfd_create("syzkaller", 0) = 3 [pid 320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program executing program [pid 320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [ 20.085282][ T28] audit: type=1400 audit(1786820296.608:64): avc: denied { execmem } for pid=305 comm="syz-executor285" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 313] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 313] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 313] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 317 attached [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 317] set_robust_list(0x55555618f760, 24 [pid 313] <... mmap resumed>) = 0x7f5cd2d00000 [pid 317] <... set_robust_list resumed>) = 0 [pid 313] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 313] rt_sigprocmask(SIG_BLOCK, ~[] [pid 317] rt_sigprocmask(SIG_SETMASK, [] [pid 313] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 317] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 316 attached [pid 313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[322]}, 88) = 322 ci2-android-6-1/strace-static-x86_64: Process 322 attached [pid 317] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 316] set_robust_list(0x55555618f760, 24 [pid 313] rt_sigprocmask(SIG_SETMASK, [] [pid 322] set_robust_list(0x7f5cd2d209a0, 24 [pid 317] <... prctl resumed>) = 0 [pid 316] <... set_robust_list resumed>) = 0 [pid 313] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 316] rt_sigprocmask(SIG_SETMASK, [] [pid 317] setpgid(0, 0 [pid 322] <... set_robust_list resumed>) = 0 [pid 313] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] <... write resumed>) = 1048576 [pid 319] munmap(0x7f5cca900000, 138412032) = 0 [pid 319] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 20.113289][ T28] audit: type=1400 audit(1786820296.618:65): avc: denied { read write } for pid=311 comm="syz-executor285" name="loop4" dev="devtmpfs" ino=122 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.142747][ T28] audit: type=1400 audit(1786820296.618:66): avc: denied { open } for pid=311 comm="syz-executor285" path="/dev/loop4" dev="devtmpfs" ino=122 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.154557][ T319] loop2: detected capacity change from 0 to 2048 [pid 319] ioctl(4, LOOP_SET_FD, 3 [pid 322] rt_sigprocmask(SIG_SETMASK, [] [pid 317] <... setpgid resumed>) = 0 [pid 316] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 313] <... futex resumed>) = 0 [pid 322] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 316] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 313] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 322] memfd_create("syzkaller", 0 [pid 317] <... openat resumed>) = 3 [pid 322] <... memfd_create resumed>) = 3 [pid 316] <... prctl resumed>) = 0 [pid 316] setpgid(0, 0 [pid 322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 317] write(3, "1000", 4 [pid 316] <... setpgid resumed>) = 0 [pid 322] <... mmap resumed>) = 0x7f5cca900000 [pid 317] <... write resumed>) = 4 [pid 316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 317] close(3 [pid 320] <... write resumed>) = 1048576 [pid 322] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 317] <... close resumed>) = 0 [pid 316] <... openat resumed>) = 3 [pid 317] write(1, "executing program\n", 18) = 18 executing program [pid 316] write(3, "1000", 4 [pid 320] munmap(0x7f5cca900000, 138412032 [pid 317] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] <... write resumed>) = 4 [pid 320] <... munmap resumed>) = 0 [pid 317] <... futex resumed>) = 0 [pid 316] close(3 [pid 320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 317] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 320] ioctl(4, LOOP_SET_FD, 3 [pid 317] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 316] <... close resumed>) = 0 [pid 322] <... write resumed>) = 1048576 [pid 319] <... ioctl resumed>) = 0 [pid 317] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 316] write(1, "executing program\n", 18 [pid 322] munmap(0x7f5cca900000, 138412032 [pid 319] close(3 [pid 317] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 316] <... write resumed>) = 18 [pid 322] <... munmap resumed>) = 0 [pid 317] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 319] <... close resumed>) = 0 [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] <... mmap resumed>) = 0x7f5cd2d00000 [pid 319] close(4 [pid 316] <... futex resumed>) = 0 executing program [pid 317] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 322] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 319] <... close resumed>) = 0 [pid 316] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 319] mkdir("./file1", 0777 [pid 317] <... mprotect resumed>) = 0 [pid 322] <... openat resumed>) = 4 [pid 316] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 319] <... mkdir resumed>) = 0 [pid 316] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 317] rt_sigprocmask(SIG_BLOCK, ~[] [pid 322] ioctl(4, LOOP_SET_FD, 3 [pid 319] mount("/dev/loop2", "./file1", "ext4", 0, ",errors=continue" [ 20.167562][ T28] audit: type=1400 audit(1786820296.618:67): avc: denied { ioctl } for pid=311 comm="syz-executor285" path="/dev/loop4" dev="devtmpfs" ino=122 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.205147][ T320] loop0: detected capacity change from 0 to 2048 [pid 316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 317] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 316] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 317] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 320] <... ioctl resumed>) = 0 [pid 320] close(3) = 0 [pid 320] close(4 [pid 316] <... mprotect resumed>) = 0 [pid 316] rt_sigprocmask(SIG_BLOCK, ~[] [pid 320] <... close resumed>) = 0 [pid 316] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 317] <... clone3 resumed> => {parent_tid=[323]}, 88) = 323 [pid 316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 320] mkdir("./file1", 0777) = -1 EEXIST (File exists) [pid 320] mount("/dev/loop0", "./file1", "ext4", 0, ",errors=continue" [pid 317] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] <... clone3 resumed> => {parent_tid=[324]}, 88) = 324 [pid 317] <... futex resumed>) = 0 [pid 316] rt_sigprocmask(SIG_SETMASK, [] [pid 317] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 316] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 316] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 324 attached ci2-android-6-1/strace-static-x86_64: Process 323 attached [pid 322] <... ioctl resumed>) = 0 [pid 324] set_robust_list(0x7f5cd2d209a0, 24 [pid 322] close(3 [pid 324] <... set_robust_list resumed>) = 0 [pid 322] <... close resumed>) = 0 [pid 324] rt_sigprocmask(SIG_SETMASK, [] [pid 323] set_robust_list(0x7f5cd2d209a0, 24 [pid 322] close(4 [pid 324] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 323] <... set_robust_list resumed>) = 0 [pid 322] <... close resumed>) = 0 [pid 324] memfd_create("syzkaller", 0 [pid 322] mkdir("./file1", 0777 [pid 323] rt_sigprocmask(SIG_SETMASK, [] [pid 324] <... memfd_create resumed>) = 3 [pid 322] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 322] mount("/dev/loop4", "./file1", "ext4", 0, ",errors=continue" [pid 324] <... mmap resumed>) = 0x7f5cca900000 [pid 324] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 323] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 324] munmap(0x7f5cca900000, 138412032 [pid 323] memfd_create("syzkaller", 0) = 3 [pid 323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 324] <... munmap resumed>) = 0 [pid 323] <... mmap resumed>) = 0x7f5cca900000 [pid 324] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 20.214508][ T28] audit: type=1400 audit(1786820296.738:68): avc: denied { mounton } for pid=314 comm="syz-executor285" path="/root/file1" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 20.237960][ T322] loop4: detected capacity change from 0 to 2048 [ 20.264645][ T319] EXT4-fs (loop2): mounted filesystem without journal. Quota mode: none. [ 20.264783][ T320] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [pid 324] ioctl(4, LOOP_SET_FD, 3 [pid 323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 323] munmap(0x7f5cca900000, 138412032) = 0 [pid 323] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 323] ioctl(4, LOOP_SET_FD, 3 [pid 322] <... mount resumed>) = 0 [pid 322] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 322] chdir("./file1") = 0 [pid 322] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 322] ioctl(4, LOOP_CLR_FD) = 0 [pid 322] close(4 [pid 319] <... mount resumed>) = 0 [pid 322] <... close resumed>) = 0 [pid 322] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] <... futex resumed>) = 1 [pid 322] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 319] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 319] chdir("./file1") = 0 [pid 319] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 319] ioctl(4, LOOP_CLR_FD) = 0 [pid 319] close(4) = 0 [pid 319] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] <... futex resumed>) = 0 [pid 314] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 1 [pid 319] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 323] <... ioctl resumed>) = 0 [pid 323] close(3) = 0 [pid 323] close(4) = 0 [pid 323] mkdir("./file1", 0777) = -1 EEXIST (File exists) [pid 323] mount("/dev/loop1", "./file1", "ext4", 0, ",errors=continue" [pid 324] <... ioctl resumed>) = 0 [pid 324] close(3) = 0 [pid 324] close(4) = 0 [pid 324] mkdir("./file1", 0777) = -1 EEXIST (File exists) [pid 324] mount("/dev/loop3", "./file1", "ext4", 0, ",errors=continue" [pid 322] <... openat resumed>) = 4 [pid 320] <... mount resumed>) = 0 [pid 319] <... openat resumed>) = 4 [pid 320] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [ 20.273692][ T322] EXT4-fs (loop4): mounted filesystem without journal. Quota mode: none. [ 20.287573][ T323] loop1: detected capacity change from 0 to 2048 [ 20.290579][ T324] loop3: detected capacity change from 0 to 2048 [ 20.303371][ T28] audit: type=1400 audit(1786820296.828:69): avc: denied { mount } for pid=313 comm="syz-executor285" name="/" dev="loop4" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 319] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... openat resumed>) = 3 [pid 319] <... futex resumed>) = 1 [pid 314] <... futex resumed>) = 0 [pid 322] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] chdir("./file1" [pid 319] truncate("./file1", 36262 [pid 314] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] <... futex resumed>) = 1 [pid 320] <... chdir resumed>) = 0 [pid 314] <... futex resumed>) = 0 [pid 313] <... futex resumed>) = 0 [ 20.319723][ T319] EXT4-fs error (device loop2): ext4_mb_generate_buddy:1126: group 0, block bitmap and bg descriptor inconsistent: 0 vs 150994969 free clusters [ 20.325359][ T28] audit: type=1400 audit(1786820296.828:70): avc: denied { write } for pid=313 comm="syz-executor285" name="/" dev="loop4" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 20.361849][ T28] audit: type=1400 audit(1786820296.828:71): avc: denied { add_name } for pid=313 comm="syz-executor285" name="file1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [pid 322] truncate("./file1", 36262 [pid 320] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 314] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 313] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... openat resumed>) = 4 [pid 313] <... futex resumed>) = 0 [pid 320] ioctl(4, LOOP_CLR_FD [pid 313] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] <... ioctl resumed>) = 0 [pid 320] close(4) = 0 [pid 319] <... truncate resumed>) = -1 ENOSPC (No space left on device) [pid 314] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 320] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... futex resumed>) = 1 [pid 318] <... futex resumed>) = 0 [pid 314] <... futex resumed>) = 0 [pid 320] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 318] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 318] <... futex resumed>) = 0 [pid 314] <... mmap resumed>) = 0x7f5cd2cdf000 [pid 318] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 314] mprotect(0x7f5cd2ce0000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2cff990, parent_tid=0x7f5cd2cff990, exit_signal=0, stack=0x7f5cd2cdf000, stack_size=0x20240, tls=0x7f5cd2cff6c0} => {parent_tid=[334]}, 88) = 334 [pid 314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 314] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.362217][ T322] EXT4-fs error (device loop4): ext4_mb_generate_buddy:1126: group 0, block bitmap and bg descriptor inconsistent: 0 vs 150994969 free clusters [ 20.383179][ T319] EXT4-fs error (device loop2) in ext4_setattr:5697: error 28 [ 20.405145][ T28] audit: type=1400 audit(1786820296.828:72): avc: denied { create } for pid=313 comm="syz-executor285" name="file1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [pid 314] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 334 attached [pid 319] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] set_robust_list(0x7f5cd2cff9a0, 24 [pid 319] <... futex resumed>) = 0 [pid 334] <... set_robust_list resumed>) = 0 [pid 319] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 334] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x200000000000 [pid 334] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] futex(0x7f5cd2df2e38, FUTEX_WAIT_PRIVATE, 0, NULL [pid 320] <... openat resumed>) = 4 [pid 314] <... futex resumed>) = 0 [pid 313] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 313] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] <... futex resumed>) = 0 [pid 314] <... futex resumed>) = 1 [pid 313] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = 1 [pid 318] <... futex resumed>) = 0 [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 320] truncate("./file1", 36262 [pid 318] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 313] <... mmap resumed>) = 0x7f5cd2cdf000 [pid 319] read(4, 0x200000000400, 4294966961) = -1 EFAULT (Bad address) [pid 318] <... futex resumed>) = 0 [pid 313] mprotect(0x7f5cd2ce0000, 131072, PROT_READ|PROT_WRITE [pid 319] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 319] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 313] <... mprotect resumed>) = 0 [pid 313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2cff990, parent_tid=0x7f5cd2cff990, exit_signal=0, stack=0x7f5cd2cdf000, stack_size=0x20240, tls=0x7f5cd2cff6c0} => {parent_tid=[335]}, 88) = 335 [pid 313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 313] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 314] <... futex resumed>) = 0 [pid 314] exit_group(0 [pid 334] <... futex resumed>) = ? [pid 319] <... futex resumed>) = ? [pid 314] <... exit_group resumed>) = ? [pid 334] +++ exited with 0 +++ [pid 319] +++ exited with 0 +++ [pid 314] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=314, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 335 attached [pid 335] set_robust_list(0x7f5cd2cff9a0, 24) = 0 [pid 335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 335] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x200000000000 [pid 335] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 335] <... futex resumed>) = 1 [pid 335] read(4, 0x200000000400, 4294966961) = -1 EFAULT (Bad address) [pid 335] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 335] <... futex resumed>) = 1 [pid 335] futex(0x7f5cd2df2e38, FUTEX_WAIT_PRIVATE, 0, NULL [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 320] <... truncate resumed>) = -1 ENOSPC (No space left on device) [pid 309] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 20.425762][ T28] audit: type=1400 audit(1786820296.828:73): avc: denied { mounton } for pid=317 comm="syz-executor285" path="/root/file1" dev="loop2" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 20.434298][ T322] EXT4-fs error (device loop4) in ext4_setattr:5697: error 28 [ 20.457959][ T320] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1126: group 0, block bitmap and bg descriptor inconsistent: 0 vs 150994969 free clusters [ 20.473611][ T320] EXT4-fs error (device loop0) in ext4_setattr:5697: error 28 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 338 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 338 attached [pid 324] <... mount resumed>) = 0 [pid 322] <... truncate resumed>) = -1 ENOSPC (No space left on device) [pid 320] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 322] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 320] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = 1 [pid 320] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0 [pid 318] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] <... mmap resumed>) = 0x200000000000 [pid 320] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 318] <... futex resumed>) = 0 [pid 320] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] exit_group(0 [pid 338] set_robust_list(0x55555618f760, 24 [pid 324] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 322] <... futex resumed>) = ? [pid 320] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = 1 [pid 313] <... exit_group resumed>) = ? [pid 338] <... set_robust_list resumed>) = 0 [pid 324] <... openat resumed>) = 3 [pid 322] +++ exited with 0 +++ [pid 320] read(4 [pid 318] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] <... read resumed>, 0x200000000400, 4294966961) = -1 EFAULT (Bad address) [pid 320] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 318] <... futex resumed>) = 0 [pid 338] rt_sigprocmask(SIG_SETMASK, [] [pid 324] chdir("./file1" [pid 320] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] exit_group(0 [pid 320] <... futex resumed>) = ? [pid 318] <... exit_group resumed>) = ? [pid 335] <... futex resumed>) = ? [pid 335] +++ exited with 0 +++ [pid 313] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=313, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 338] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 338] setpgid(0, 0) = 0 [pid 338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 338] write(3, "1000", 4) = 4 [pid 338] close(3) = 0 executing program [pid 338] write(1, "executing program\n", 18) = 18 [pid 338] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 338] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 338] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[341]}, 88) = 341 [pid 338] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 338] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 341 attached [pid 341] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 341] memfd_create("syzkaller", 0) = 3 [pid 341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 320] +++ exited with 0 +++ [pid 318] +++ exited with 0 +++ [pid 324] <... chdir resumed>) = 0 [pid 323] <... mount resumed>) = 0 [pid 324] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 323] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 311] <... restart_syscall resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=318, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 324] ioctl(4, LOOP_CLR_FD) = 0 [pid 323] <... openat resumed>) = 3 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 324] close(4) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 311] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 311] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 311] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] close(3 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... close resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 342 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 343 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 324] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 316] <... futex resumed>) = 0 [pid 324] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 316] <... futex resumed>) = 1 [pid 324] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 324] <... openat resumed>) = 4 [pid 324] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 316] <... futex resumed>) = 0 [pid 324] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 316] <... futex resumed>) = 1 [pid 324] truncate("./file1", 36262 [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... write resumed>) = 1048576 [pid 341] munmap(0x7f5cca900000, 138412032) = 0 [pid 341] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 341] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 341] ioctl(4, LOOP_CLR_FD) = 0 [pid 323] chdir("./file1") = 0 [pid 323] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 323] ioctl(4, LOOP_CLR_FD) = 0 [pid 323] close(4) = 0 [pid 323] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] <... futex resumed>) = 0 [pid 317] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 317] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... futex resumed>) = 1 [pid 323] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 341] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 341] close(4) = 0 [pid 341] close(3) = 0 [pid 341] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 1 [pid 341] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 341] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 1 [pid 341] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 341] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 1 [pid 341] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 341] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 1 [pid 341] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 341] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] exit_group(0) = ? [pid 341] <... futex resumed>) = ? [pid 341] +++ exited with 0 +++ [pid 338] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=338, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 342 attached [pid 323] <... openat resumed>) = 4 [pid 342] set_robust_list(0x55555618f760, 24) = 0 [pid 342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 342] setpgid(0, 0) = 0 [pid 323] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 342] write(3, "1000", 4) = 4 [pid 342] close(3) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 345 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 342] write(1, "executing program\n", 18) = 18 executing program [pid 342] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 342] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 342] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 342] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 342] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 342] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[346]}, 88) = 346 [pid 342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 342] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 342] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 346 attached [pid 346] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 346] memfd_create("syzkaller", 0) = 3 [pid 346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 323] <... futex resumed>) = 1 [pid 317] <... futex resumed>) = 0 [pid 317] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 323] truncate("./file1", 36262 [pid 317] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 20.482409][ T324] EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none. [ 20.496002][ T323] EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none. [ 20.513606][ T324] EXT4-fs error (device loop3): ext4_mb_generate_buddy:1126: group 0, block bitmap and bg descriptor inconsistent: 0 vs 150994969 free clusters [pid 346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 346] munmap(0x7f5cca900000, 138412032) = 0 [pid 346] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 346] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 346] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 343 attached [pid 343] set_robust_list(0x55555618f760, 24) = 0 [pid 343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 346] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 346] close(4) = 0 [pid 346] close(3) = 0 [pid 346] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... futex resumed>) = 0 [pid 342] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 342] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 346] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... futex resumed>) = 0 [pid 342] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 342] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 346] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... futex resumed>) = 0 [pid 342] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 342] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 346] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... futex resumed>) = 0 [pid 342] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 342] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 346] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... futex resumed>) = 0 [pid 342] exit_group(0) = ? [pid 346] <... futex resumed>) = ? [pid 346] +++ exited with 0 +++ [pid 342] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=342, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 343] setpgid(0, 0) = 0 [pid 343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 343] write(3, "1000", 4 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 347 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] <... write resumed>) = 4 [pid 343] close(3) = 0 executing program [pid 343] write(1, "executing program\n", 18) = 18 [pid 343] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 316] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 316] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 316] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2cdf000 [pid 316] mprotect(0x7f5cd2ce0000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2cff990, parent_tid=0x7f5cd2cff990, exit_signal=0, stack=0x7f5cd2cdf000, stack_size=0x20240, tls=0x7f5cd2cff6c0} => {parent_tid=[348]}, 88) = 348 [pid 316] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 345 attached [pid 316] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 345] set_robust_list(0x55555618f760, 24 [pid 316] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 347 attached [pid 343] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 343] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 343] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 343] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[349]}, 88) = 349 [pid 343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 349 attached [pid 349] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 349] memfd_create("syzkaller", 0) = 3 [pid 349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 345] <... set_robust_list resumed>) = 0 [pid 347] set_robust_list(0x55555618f760, 24 [pid 345] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 348 attached [pid 347] <... set_robust_list resumed>) = 0 [pid 345] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 347] rt_sigprocmask(SIG_SETMASK, [] [pid 345] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 348] set_robust_list(0x7f5cd2cff9a0, 24 [pid 345] <... prctl resumed>) = 0 [pid 347] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 345] setpgid(0, 0 [pid 348] <... set_robust_list resumed>) = 0 [pid 345] <... setpgid resumed>) = 0 [pid 348] rt_sigprocmask(SIG_SETMASK, [] [pid 347] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 347] <... prctl resumed>) = 0 [pid 348] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 347] setpgid(0, 0 [pid 345] <... openat resumed>) = 3 [pid 345] write(3, "1000", 4 [pid 348] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0 [pid 347] <... setpgid resumed>) = 0 [pid 345] <... write resumed>) = 4 [pid 347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 345] close(3) = 0 [pid 347] <... openat resumed>) = 3 [pid 345] write(1, "executing program\n", 18 [pid 348] <... mmap resumed>) = 0x200000000000 executing program [pid 347] write(3, "1000", 4 [pid 345] <... write resumed>) = 18 [pid 347] <... write resumed>) = 4 [pid 345] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] close(3 [pid 348] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 345] <... futex resumed>) = 0 [pid 347] <... close resumed>) = 0 [pid 345] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 347] write(1, "executing program\n", 18 executing program [pid 348] <... futex resumed>) = 1 [pid 316] <... futex resumed>) = 0 [pid 345] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 347] <... write resumed>) = 18 [pid 348] read(4 [pid 345] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 316] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 345] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 347] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 316] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... mmap resumed>) = 0x7f5cd2d00000 [pid 347] <... futex resumed>) = 0 [pid 347] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 345] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 347] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 345] <... mprotect resumed>) = 0 [pid 345] rt_sigprocmask(SIG_BLOCK, ~[] [pid 347] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 345] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 345] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 347] <... mmap resumed>) = 0x7f5cd2d00000 [pid 345] <... clone3 resumed> => {parent_tid=[350]}, 88) = 350 [pid 347] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 345] rt_sigprocmask(SIG_SETMASK, [] [pid 347] <... mprotect resumed>) = 0 [pid 345] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 345] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] rt_sigprocmask(SIG_BLOCK, ~[] [pid 345] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 347] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 347] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[351]}, 88) = 351 [pid 347] rt_sigprocmask(SIG_SETMASK, [] [pid 349] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 347] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 347] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 349] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 350 attached [pid 350] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 350] memfd_create("syzkaller", 0) = 3 [pid 350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 349] munmap(0x7f5cca900000, 138412032) = 0 [pid 348] <... read resumed>, 0x200000000400, 4294966961) = 10 ci2-android-6-1/strace-static-x86_64: Process 351 attached [pid 348] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 316] <... futex resumed>) = 0 [pid 348] <... futex resumed>) = 1 [pid 349] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 349] ioctl(4, LOOP_CLR_FD) = 0 [ 20.544649][ T323] EXT4-fs error (device loop1): ext4_mb_generate_buddy:1126: group 0, block bitmap and bg descriptor inconsistent: 0 vs 150994969 free clusters [pid 348] futex(0x7f5cd2df2e38, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] set_robust_list(0x7f5cd2d209a0, 24 [pid 350] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 349] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 349] close(4) = 0 [pid 349] close(3) = 0 [pid 349] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 349] <... futex resumed>) = 1 [pid 349] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 349] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 349] <... futex resumed>) = 1 [pid 349] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 349] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 349] <... futex resumed>) = 1 [pid 349] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 349] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 349] <... futex resumed>) = 1 [pid 349] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 349] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] exit_group(0) = ? [pid 349] <... futex resumed>) = ? [pid 349] +++ exited with 0 +++ [pid 343] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=343, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 317] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 317] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 317] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2cdf000 [pid 317] mprotect(0x7f5cd2ce0000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 317] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 317] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2cff990, parent_tid=0x7f5cd2cff990, exit_signal=0, stack=0x7f5cd2cdf000, stack_size=0x20240, tls=0x7f5cd2cff6c0} => {parent_tid=[352]}, 88) = 352 [pid 317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 317] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 317] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... write resumed>) = 1048576 [pid 350] munmap(0x7f5cca900000, 138412032) = 0 [pid 350] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 350] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 350] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 352 attached [pid 352] set_robust_list(0x7f5cd2cff9a0, 24) = 0 [pid 352] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 352] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x200000000000 [pid 352] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] <... futex resumed>) = 0 [pid 317] futex(0x7f5cd2df2e38, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 317] futex(0x7f5cd2df2e3c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 352] <... futex resumed>) = 1 [pid 352] read(4 [pid 350] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 350] close(4) = 0 [pid 350] close(3) = 0 [pid 350] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 345] <... futex resumed>) = 0 [pid 350] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 345] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 350] <... futex resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 350] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 345] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 350] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 345] <... futex resumed>) = 0 [pid 350] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 345] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 345] <... futex resumed>) = 0 [pid 350] truncate("./file1", 36262 [pid 345] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 350] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 350] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 350] <... futex resumed>) = 1 [pid 345] <... futex resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 353 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 350] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 345] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 345] <... futex resumed>) = 0 [pid 345] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 350] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... read resumed>, 0x200000000400, 4294966961) = 10 [pid 350] <... futex resumed>) = 1 [pid 345] <... futex resumed>) = 0 [pid 352] futex(0x7f5cd2df2e3c, FUTEX_WAKE_PRIVATE, 1000000 [pid 345] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 345] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 0 [pid 352] <... futex resumed>) = 1 [pid 350] read(-1 [pid 352] futex(0x7f5cd2df2e38, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 351] <... set_robust_list resumed>) = 0 [pid 350] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 345] <... futex resumed>) = 0 [pid 345] exit_group(0 [pid 350] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 345] <... exit_group resumed>) = ? ci2-android-6-1/strace-static-x86_64: Process 353 attached [pid 353] set_robust_list(0x55555618f760, 24) = 0 [pid 353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 353] setpgid(0, 0) = 0 [pid 350] +++ exited with 0 +++ [pid 345] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=345, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 351] memfd_create("syzkaller", 0) = 3 [pid 353] <... openat resumed>) = 3 [pid 351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 353] write(3, "1000", 4) = 4 [pid 353] close(3) = 0 [pid 353] write(1, "executing program\n", 18) = 18 executing program [pid 351] <... mmap resumed>) = 0x7f5cca900000 [pid 353] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 353] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 353] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 353] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 353] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[354]}, 88) = 354 [pid 353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 323] <... truncate resumed>) = -1 ENOSPC (No space left on device) [pid 323] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 354 attached [pid 354] set_robust_list(0x7f5cd2d209a0, 24 [pid 324] <... truncate resumed>) = -1 ENOSPC (No space left on device) [pid 354] <... set_robust_list resumed>) = 0 [pid 354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 354] memfd_create("syzkaller", 0 [pid 324] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 323] <... futex resumed>) = 0 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] <... memfd_create resumed>) = 3 [pid 317] exit_group(0 [pid 316] exit_group(0 [pid 352] <... futex resumed>) = ? [pid 348] <... futex resumed>) = ? [pid 324] <... futex resumed>) = ? [pid 317] <... exit_group resumed>) = ? [pid 316] <... exit_group resumed>) = ? [pid 348] +++ exited with 0 +++ [pid 352] +++ exited with 0 +++ [pid 354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 324] +++ exited with 0 +++ [pid 316] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=316, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 323] +++ exited with 0 +++ [pid 317] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=317, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 309] close(3 [pid 308] close(3 [pid 310] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 356 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 355 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 357 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 354] munmap(0x7f5cca900000, 138412032) = 0 ci2-android-6-1/strace-static-x86_64: Process 357 attached [pid 354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 357] set_robust_list(0x55555618f760, 24 [pid 354] ioctl(4, LOOP_SET_FD, 3 [pid 357] <... set_robust_list resumed>) = 0 [pid 354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] rt_sigprocmask(SIG_SETMASK, [] [pid 354] ioctl(4, LOOP_CLR_FD) = 0 [pid 357] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] setpgid(0, 0) = 0 [pid 357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 357] write(3, "1000", 4) = 4 [pid 357] close(3) = 0 [pid 357] write(1, "executing program\n", 18) = 18 [pid 357] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 354] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 354] close(4) = 0 [pid 354] close(3) = 0 [pid 357] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 357] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 357] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 357] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[358]}, 88) = 358 [pid 357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 357] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 354] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 executing program [pid 353] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 354] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 354] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 354] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 354] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] exit_group(0) = ? [pid 354] <... futex resumed>) = ? [pid 354] +++ exited with 0 +++ [pid 353] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=353, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 358 attached [pid 358] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 358] memfd_create("syzkaller", 0) = 3 ci2-android-6-1/strace-static-x86_64: Process 355 attached [pid 358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 355] set_robust_list(0x55555618f760, 24) = 0 [pid 355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 356 attached [pid 355] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] set_robust_list(0x55555618f760, 24 [pid 355] <... prctl resumed>) = 0 [pid 355] setpgid(0, 0 [pid 356] <... set_robust_list resumed>) = 0 [pid 355] <... setpgid resumed>) = 0 [pid 356] rt_sigprocmask(SIG_SETMASK, [] [pid 355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 356] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 355] write(3, "1000", 4 [pid 356] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 355] <... write resumed>) = 4 [pid 356] <... prctl resumed>) = 0 [pid 356] setpgid(0, 0 [pid 355] close(3) = 0 [pid 356] <... setpgid resumed>) = 0 [pid 355] write(1, "executing program\n", 18 [pid 356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 355] <... write resumed>) = 18 [pid 355] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 356] <... openat resumed>) = 3 [pid 355] <... futex resumed>) = 0 [pid 356] write(3, "1000", 4 [pid 351] <... write resumed>) = 1048576 [pid 355] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 356] <... write resumed>) = 4 [pid 351] munmap(0x7f5cca900000, 138412032 [pid 355] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 356] close(3) = 0 [pid 355] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 351] <... munmap resumed>) = 0 [pid 355] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 356] write(1, "executing program\n", 18 [pid 351] openat(AT_FDCWD, "/dev/loop4", O_RDWR executing program [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 356] <... write resumed>) = 18 [pid 356] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... mmap resumed>) = 0x7f5cd2d00000 [pid 351] <... openat resumed>) = 4 [pid 356] <... futex resumed>) = 0 [pid 355] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 351] ioctl(4, LOOP_SET_FD, 3 [pid 356] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 355] <... mprotect resumed>) = 0 [pid 355] rt_sigprocmask(SIG_BLOCK, ~[] [pid 356] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 351] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 355] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 351] ioctl(4, LOOP_CLR_FD [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 359 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 358] <... write resumed>) = 1048576 [pid 358] munmap(0x7f5cca900000, 138412032) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 358] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 358] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x55555618f760, 24) = 0 [pid 359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 359] setpgid(0, 0) = 0 [pid 359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 358] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 358] close(4) = 0 [pid 358] close(3 [pid 356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 355] <... clone3 resumed> => {parent_tid=[360]}, 88) = 360 [pid 356] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 355] rt_sigprocmask(SIG_SETMASK, [] [pid 351] <... ioctl resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 359] write(3, "1000", 4) = 4 [pid 359] close(3) = 0 [pid 359] write(1, "executing program\n", 18) = 18 [pid 359] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = 1 [pid 359] <... futex resumed>) = 0 [pid 358] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 359] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 358] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 359] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 359] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 358] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = 1 [pid 358] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 359] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 358] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = 1 [pid 358] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 358] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] rt_sigprocmask(SIG_BLOCK, ~[] [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = 1 [pid 358] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 358] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] exit_group(0) = ? [pid 358] <... futex resumed>) = ? [pid 359] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[361]}, 88) = 361 [pid 359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 359] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 358] +++ exited with 0 +++ [pid 357] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=357, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 361 attached ) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 executing program [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 362 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 361] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 361] memfd_create("syzkaller", 0) = 3 [pid 361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 356] <... mprotect resumed>) = 0 [pid 355] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 355] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 356] rt_sigprocmask(SIG_BLOCK, ~[] [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 356] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 362 attached [pid 362] set_robust_list(0x55555618f760, 24) = 0 [pid 356] <... clone3 resumed> => {parent_tid=[363]}, 88) = 363 [pid 356] rt_sigprocmask(SIG_SETMASK, [] [pid 362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 356] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] ioctl(4, LOOP_SET_FD, 3 [pid 356] <... futex resumed>) = 0 [pid 351] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 351] close(4 [pid 362] <... prctl resumed>) = 0 [pid 362] setpgid(0, 0) = 0 [pid 362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 351] <... close resumed>) = 0 [ 20.587077][ T324] EXT4-fs error (device loop3) in ext4_setattr:5697: error 28 [ 20.605502][ T323] EXT4-fs error (device loop1) in ext4_setattr:5697: error 28 [pid 351] close(3 [pid 362] <... openat resumed>) = 3 [pid 362] write(3, "1000", 4) = 4 [pid 362] close(3) = 0 [pid 362] write(1, "executing program\n", 18) = 18 [pid 362] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 362] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 362] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 362] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 362] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 351] <... close resumed>) = 0 executing program [pid 362] <... clone3 resumed> => {parent_tid=[364]}, 88) = 364 [pid 351] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 360 attached [pid 362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 362] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 1 [pid 347] <... futex resumed>) = 0 [pid 360] set_robust_list(0x7f5cd2d209a0, 24 [pid 347] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 360] <... set_robust_list resumed>) = 0 [pid 360] rt_sigprocmask(SIG_SETMASK, [] [pid 351] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 347] <... futex resumed>) = 0 [pid 360] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 347] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 360] memfd_create("syzkaller", 0 [pid 347] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] truncate("./file1", 36262 [pid 360] <... memfd_create resumed>) = 3 [pid 351] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 347] <... futex resumed>) = 0 [pid 361] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 363 attached [pid 363] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 363] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 363] memfd_create("syzkaller", 0 [pid 361] munmap(0x7f5cca900000, 138412032) = 0 [pid 347] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... memfd_create resumed>) = 3 [pid 363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 351] <... futex resumed>) = 1 [pid 347] <... futex resumed>) = 0 [pid 360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 351] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 347] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 351] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 347] <... futex resumed>) = 0 [pid 360] <... mmap resumed>) = 0x7f5cca900000 [pid 347] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 361] <... openat resumed>) = 4 [pid 360] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 347] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 347] <... futex resumed>) = 0 [pid 361] ioctl(4, LOOP_SET_FD, 3 [pid 351] read(-1 [pid 347] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 351] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 361] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 364 attached [pid 364] set_robust_list(0x7f5cd2d209a0, 24 [pid 351] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... set_robust_list resumed>) = 0 [pid 364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 364] memfd_create("syzkaller", 0) = 3 [pid 364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 361] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 361] close(4) = 0 [pid 361] close(3) = 0 [pid 361] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] <... futex resumed>) = 0 [pid 359] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 361] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] <... futex resumed>) = 0 [pid 359] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 361] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] <... futex resumed>) = 0 [pid 359] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 351] <... futex resumed>) = 1 [pid 347] <... futex resumed>) = 0 [pid 361] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] <... futex resumed>) = 0 [pid 351] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 347] exit_group(0 [pid 359] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... exit_group resumed>) = ? [pid 351] <... futex resumed>) = ? [pid 359] <... futex resumed>) = 0 [pid 359] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 351] +++ exited with 0 +++ [pid 347] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=347, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 361] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] <... futex resumed>) = 0 [pid 359] exit_group(0) = ? [pid 361] <... futex resumed>) = ? [pid 361] +++ exited with 0 +++ [pid 359] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=359, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 360] <... write resumed>) = 1048576 [pid 363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] <... restart_syscall resumed>) = 0 [pid 360] munmap(0x7f5cca900000, 138412032 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] <... munmap resumed>) = 0 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 365 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 360] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 360] <... openat resumed>) = 4 [pid 360] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 307] <... restart_syscall resumed>) = 0 [pid 360] ioctl(4, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 360] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 366 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 364] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 360] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 360] close(4) = 0 [pid 360] close(3) = 0 [pid 363] <... write resumed>) = 1048576 [pid 363] munmap(0x7f5cca900000, 138412032 [pid 360] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... munmap resumed>) = 0 [pid 363] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] <... futex resumed>) = 1 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... openat resumed>) = 4 [pid 363] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 360] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 363] ioctl(4, LOOP_CLR_FD) = 0 [pid 360] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 360] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... write resumed>) = 1048576 [pid 363] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 363] close(4) = 0 [pid 363] close(3ci2-android-6-1/strace-static-x86_64: Process 366 attached [pid 366] set_robust_list(0x55555618f760, 24) = 0 [pid 366] rt_sigprocmask(SIG_SETMASK, [] [pid 363] <... close resumed>) = 0 [pid 366] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 366] setpgid(0, 0) = 0 [pid 366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 364] munmap(0x7f5cca900000, 138412032) = 0 [pid 366] <... openat resumed>) = 3 [pid 366] write(3, "1000", 4) = 4 [pid 366] close(3) = 0 [pid 364] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 366] write(1, "executing program\n", 18 [pid 364] <... openat resumed>) = 4 [pid 366] <... write resumed>) = 18 executing program [pid 366] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] ioctl(4, LOOP_SET_FD, 3 [pid 366] <... futex resumed>) = 0 [pid 364] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... futex resumed>) = 1 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 366] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 360] truncate("./file1", 36262 [pid 364] ioctl(4, LOOP_CLR_FD [pid 366] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 366] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 364] <... ioctl resumed>) = 0 [pid 366] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 360] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 366] <... mmap resumed>) = 0x7f5cd2d00000 [pid 366] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 366] rt_sigprocmask(SIG_BLOCK, ~[] [pid 363] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 356] <... futex resumed>) = 0 [pid 363] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 356] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 356] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 366] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 360] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 356] <... futex resumed>) = 0 [pid 363] truncate("./file1", 36262 [pid 356] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] ioctl(4, LOOP_SET_FD, 3 [pid 356] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 364] close(4) = 0 [pid 364] close(3 [pid 360] <... futex resumed>) = 1 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 360] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 365 attached [pid 363] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 365] set_robust_list(0x55555618f760, 24 [pid 360] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 363] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 356] <... futex resumed>) = 0 [pid 363] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 356] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 367 attached [pid 366] <... clone3 resumed> => {parent_tid=[367]}, 88) = 367 [pid 365] <... set_robust_list resumed>) = 0 [pid 364] <... close resumed>) = 0 [pid 360] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] set_robust_list(0x7f5cd2d209a0, 24 [pid 366] rt_sigprocmask(SIG_SETMASK, [] [pid 364] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 356] <... futex resumed>) = 0 [pid 360] <... futex resumed>) = 1 [pid 355] <... futex resumed>) = 0 [pid 367] <... set_robust_list resumed>) = 0 [pid 366] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 364] <... futex resumed>) = 1 [pid 363] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 362] <... futex resumed>) = 0 [pid 360] read(-1 [pid 356] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] rt_sigprocmask(SIG_SETMASK, [] [pid 360] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 355] <... futex resumed>) = 0 [pid 367] rt_sigprocmask(SIG_SETMASK, [] [pid 366] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 364] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 363] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 362] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 360] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 366] <... futex resumed>) = 0 [pid 364] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 363] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 360] <... futex resumed>) = 0 [pid 355] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 365] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 367] memfd_create("syzkaller", 0 [pid 366] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 365] <... prctl resumed>) = 0 [pid 364] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = 1 [pid 362] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 360] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 356] <... futex resumed>) = 0 [pid 355] exit_group(0 [pid 367] <... memfd_create resumed>) = 3 [pid 364] <... futex resumed>) = 0 [pid 363] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 356] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... exit_group resumed>) = ? [pid 360] <... futex resumed>) = ? [pid 365] setpgid(0, 0 [pid 356] <... futex resumed>) = 0 [pid 367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 364] truncate("./file1", 36262 [pid 363] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 362] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... mmap resumed>) = 0x7f5cca900000 [pid 364] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 363] read(-1 [pid 362] <... futex resumed>) = 0 [pid 360] +++ exited with 0 +++ [pid 356] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 365] <... setpgid resumed>) = 0 [pid 364] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 362] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] +++ exited with 0 +++ [pid 364] <... futex resumed>) = 0 [pid 363] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 363] <... futex resumed>) = 1 [pid 362] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=355, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 363] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] <... futex resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 364] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 362] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 364] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 362] <... futex resumed>) = 0 [pid 364] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 362] <... futex resumed>) = 0 [pid 364] read(-1 [pid 362] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 364] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 362] <... futex resumed>) = 0 [pid 364] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] exit_group(0 [pid 364] <... futex resumed>) = ? [pid 362] <... exit_group resumed>) = ? [pid 364] +++ exited with 0 +++ [pid 362] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=362, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 367] <... write resumed>) = 1048576 [pid 367] munmap(0x7f5cca900000, 138412032) = 0 [pid 367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... futex resumed>) = 0 [pid 356] exit_group(0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 365] <... openat resumed>) = 3 [pid 363] <... futex resumed>) = ? [pid 356] <... exit_group resumed>) = ? [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 363] +++ exited with 0 +++ [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 308] close(3 [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 365] write(3, "1000", 4 [pid 356] +++ exited with 0 +++ [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 365] <... write resumed>) = 4 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=356, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 368 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 369 [pid 365] close(3 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 365] <... close resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 365] write(1, "executing program\n", 18) = 18 [pid 367] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 367] ioctl(4, LOOP_CLR_FD) = 0 [pid 365] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 ci2-android-6-1/strace-static-x86_64: Process 369 attached executing program [pid 365] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 365] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 369] set_robust_list(0x55555618f760, 24 [pid 365] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 369] <... set_robust_list resumed>) = 0 [pid 365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 365] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 369] rt_sigprocmask(SIG_SETMASK, [] [pid 365] <... mprotect resumed>) = 0 [pid 369] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 365] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 365] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 369] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 365] <... clone3 resumed> => {parent_tid=[370]}, 88) = 370 [pid 365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 367] ioctl(4, LOOP_SET_FD, 3 [pid 365] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 365] <... futex resumed>) = 0 [pid 367] close(4 [pid 365] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 367] <... close resumed>) = 0 [pid 367] close(3) = 0 [pid 367] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... futex resumed>) = 1 [pid 367] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 367] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... futex resumed>) = 1 [pid 367] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 367] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... futex resumed>) = 1 [pid 367] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 367] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... futex resumed>) = 1 [pid 367] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 367] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] exit_group(0) = ? [pid 367] <... futex resumed>) = ? [pid 367] +++ exited with 0 +++ [pid 366] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 369] <... prctl resumed>) = 0 [pid 369] setpgid(0, 0) = 0 [pid 369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 369] write(3, "1000", 4) = 4 [pid 369] close(3) = 0 [pid 369] write(1, "executing program\n", 18) = 18 [pid 369] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 310] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] close(3 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... close resumed>) = 0 executing program [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 371 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 372 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 369] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 369] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 369] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 369] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[373]}, 88) = 373 [pid 369] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 369] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 370 attached [pid 370] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 370] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 370] memfd_create("syzkaller", 0) = 3 [pid 370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 370] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x55555618f760, 24) = 0 [pid 372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 372] setpgid(0, 0) = 0 [pid 372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 372] write(3, "1000", 4ci2-android-6-1/strace-static-x86_64: Process 371 attached ) = 4 [pid 372] close(3) = 0 [pid 371] set_robust_list(0x55555618f760, 24 [pid 372] write(1, "executing program\n", 18) = 18 [pid 371] <... set_robust_list resumed>) = 0 [pid 372] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] rt_sigprocmask(SIG_SETMASK, [] [pid 372] <... futex resumed>) = 0 executing program [pid 372] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 372] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 371] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 372] <... mmap resumed>) = 0x7f5cd2d00000 [pid 372] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 371] <... prctl resumed>) = 0 [pid 372] <... mprotect resumed>) = 0 [pid 371] setpgid(0, 0) = 0 [pid 371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 372] rt_sigprocmask(SIG_BLOCK, ~[] [pid 371] <... openat resumed>) = 3 [pid 372] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 371] write(3, "1000", 4) = 4 [pid 371] close(3) = 0 [pid 371] write(1, "executing program\n", 18) = 18 [pid 372] <... clone3 resumed> => {parent_tid=[374]}, 88) = 374 [pid 372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 371] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] <... futex resumed>) = 0 [pid 372] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 371] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 371] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 371] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 371] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 371] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[375]}, 88) = 375 [pid 371] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 371] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 371] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 370] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 374 attached [pid 374] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 374] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 374] memfd_create("syzkaller", 0) = 3 ci2-android-6-1/strace-static-x86_64: Process 368 attached [pid 374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 373 attached [pid 368] set_robust_list(0x55555618f760, 24) = 0 [pid 373] set_robust_list(0x7f5cd2d209a0, 24 [pid 368] rt_sigprocmask(SIG_SETMASK, [] [pid 373] <... set_robust_list resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 375 attached [pid 375] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 375] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 375] memfd_create("syzkaller", 0 [pid 373] rt_sigprocmask(SIG_SETMASK, [] [pid 368] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 368] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 373] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 375] <... memfd_create resumed>) = 3 [pid 375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 368] <... prctl resumed>) = 0 [pid 373] memfd_create("syzkaller", 0 [pid 368] setpgid(0, 0 [pid 373] <... memfd_create resumed>) = 3 [pid 368] <... setpgid resumed>) = 0 [pid 373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 373] <... mmap resumed>) = 0x7f5cca900000 [pid 368] <... openat resumed>) = 3 [pid 370] munmap(0x7f5cca900000, 138412032) = 0 [pid 370] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 370] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 370] ioctl(4, LOOP_CLR_FD [pid 368] write(3, "1000", 4 [pid 370] <... ioctl resumed>) = 0 [pid 374] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 370] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 370] close(4) = 0 [pid 370] close(3 [pid 373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 368] <... write resumed>) = 4 [pid 370] <... close resumed>) = 0 [pid 375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 368] close(3) = 0 [pid 368] write(1, "executing program\n", 18 [pid 370] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 370] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 365] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... openat resumed>) = -1 EISDIR (Is a directory) executing program [pid 368] <... write resumed>) = 18 [pid 370] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 368] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] truncate("./file1", 36262 [pid 368] <... futex resumed>) = 0 [pid 365] <... futex resumed>) = 0 [pid 365] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 368] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 370] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 368] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 375] <... write resumed>) = 1048576 [pid 374] <... write resumed>) = 1048576 [pid 373] <... write resumed>) = 1048576 [pid 375] munmap(0x7f5cca900000, 138412032 [pid 374] munmap(0x7f5cca900000, 138412032 [pid 370] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... munmap resumed>) = 0 [pid 374] <... munmap resumed>) = 0 [pid 370] <... futex resumed>) = 1 [pid 368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 365] <... futex resumed>) = 0 [pid 375] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 374] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 370] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] <... mmap resumed>) = 0x7f5cd2d00000 [pid 365] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... openat resumed>) = 4 [pid 374] <... openat resumed>) = 4 [pid 370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 365] <... futex resumed>) = 0 [pid 375] ioctl(4, LOOP_SET_FD, 3 [pid 374] ioctl(4, LOOP_SET_FD, 3 [pid 370] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 368] <... mprotect resumed>) = 0 [pid 365] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 374] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 370] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 375] ioctl(4, LOOP_CLR_FD [pid 374] ioctl(4, LOOP_CLR_FD [pid 370] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... ioctl resumed>) = 0 [pid 374] <... ioctl resumed>) = 0 [pid 370] <... futex resumed>) = 0 [pid 370] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] rt_sigprocmask(SIG_BLOCK, ~[] [pid 365] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] munmap(0x7f5cca900000, 138412032 [pid 368] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 365] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... munmap resumed>) = 0 [pid 370] <... futex resumed>) = 0 [pid 368] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 365] <... futex resumed>) = 1 [pid 373] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 373] ioctl(4, LOOP_SET_FD, 3 [pid 365] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] read(-1 [pid 368] <... clone3 resumed> => {parent_tid=[376]}, 88) = 376 [pid 370] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 368] rt_sigprocmask(SIG_SETMASK, [] [pid 370] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 370] <... futex resumed>) = 1 [pid 368] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] <... futex resumed>) = 0 [pid 370] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] <... futex resumed>) = 0 [pid 365] exit_group(0 [pid 368] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 370] <... futex resumed>) = ? [pid 365] <... exit_group resumed>) = ? [pid 370] +++ exited with 0 +++ [pid 375] ioctl(4, LOOP_SET_FD, 3 [pid 374] ioctl(4, LOOP_SET_FD, 3 [pid 375] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 374] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] close(4 [pid 374] close(4 [pid 375] <... close resumed>) = 0 [pid 374] <... close resumed>) = 0 [pid 375] close(3 [pid 374] close(3 [pid 365] +++ exited with 0 +++ [pid 375] <... close resumed>) = 0 [pid 374] <... close resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=365, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 375] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 375] <... futex resumed>) = 1 [pid 374] <... futex resumed>) = 1 [pid 372] <... futex resumed>) = 0 [pid 371] <... futex resumed>) = 0 [pid 375] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 372] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 374] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 373] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 372] <... futex resumed>) = 0 [pid 371] <... futex resumed>) = 0 [pid 375] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 374] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] ioctl(4, LOOP_CLR_FD [pid 372] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 374] <... futex resumed>) = 0 [pid 373] <... ioctl resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] truncate("./file1", 36262 [pid 372] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... futex resumed>) = 1 [pid 374] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 372] <... futex resumed>) = 0 [pid 371] <... futex resumed>) = 0 [pid 375] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 374] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] <... futex resumed>) = 0 [pid 375] truncate("./file1", 36262 [pid 374] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 372] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 374] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... futex resumed>) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 375] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 374] <... futex resumed>) = 0 [pid 373] ioctl(4, LOOP_SET_FD, 3 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] <... futex resumed>) = 0 [pid 375] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] read(-1 [pid 373] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 372] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 374] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 373] close(4 [pid 372] <... futex resumed>) = 0 [pid 371] <... futex resumed>) = 0 [pid 311] <... openat resumed>) = 3 [pid 375] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 374] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... close resumed>) = 0 [pid 372] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] ioctl(3, LOOP_CLR_FD [pid 375] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 374] <... futex resumed>) = 0 [pid 373] close(3 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] <... ioctl resumed>) = 0 [pid 375] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] <... close resumed>) = 0 [pid 372] exit_group(0 [pid 311] close(3 [pid 375] <... futex resumed>) = 1 [pid 374] <... futex resumed>) = ? [pid 373] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... exit_group resumed>) = ? [pid 371] <... futex resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 375] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] +++ exited with 0 +++ [pid 373] <... futex resumed>) = 1 [pid 372] +++ exited with 0 +++ [pid 371] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... futex resumed>) = 0 [pid 369] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=372, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 375] read(-1 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... futex resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 375] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 373] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 369] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 377 [pid 375] <... futex resumed>) = 1 [pid 373] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 375] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] <... futex resumed>) = 1 [pid 371] exit_group(0 [pid 369] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 375] <... futex resumed>) = ? [pid 373] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... exit_group resumed>) = ? [pid 369] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] +++ exited with 0 +++ [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] +++ exited with 0 +++ [pid 369] <... futex resumed>) = 0 [pid 373] truncate("./file1", 36262 [pid 369] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=371, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 373] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 373] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] <... futex resumed>) = 0 [pid 373] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 369] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 369] <... futex resumed>) = 0 [pid 373] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... futex resumed>) = 0 [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] read(-1 [pid 369] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 369] <... futex resumed>) = 0 [pid 373] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... futex resumed>) = 0 [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] exit_group(0 [pid 373] <... futex resumed>) = ? [pid 369] <... exit_group resumed>) = ? [pid 373] +++ exited with 0 +++ [pid 369] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 377 attached [pid 377] set_robust_list(0x55555618f760, 24) = 0 [pid 377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 377] setpgid(0, 0) = 0 [pid 377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 377] write(3, "1000", 4) = 4 [pid 377] close(3) = 0 [pid 377] write(1, "executing program\n", 18) = 18 [pid 377] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 377] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 executing program [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 308] close(3 [pid 307] close(3 [pid 310] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 378 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 379 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 380 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 377] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 377] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 377] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 377] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 377] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[381]}, 88) = 381 [pid 377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 377] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 377] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 380 attached [pid 380] set_robust_list(0x55555618f760, 24) = 0 [pid 380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 380] setpgid(0, 0) = 0 [pid 380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 380] write(3, "1000", 4) = 4 [pid 380] close(3) = 0 ci2-android-6-1/strace-static-x86_64: Process 379 attached [pid 380] write(1, "executing program\n", 18 [pid 379] set_robust_list(0x55555618f760, 24 [pid 380] <... write resumed>) = 18 executing program [pid 380] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... set_robust_list resumed>) = 0 [pid 379] rt_sigprocmask(SIG_SETMASK, [] [pid 380] <... futex resumed>) = 0 [pid 380] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 380] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 379] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 379] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 380] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 379] <... prctl resumed>) = 0 [pid 379] setpgid(0, 0 [pid 380] rt_sigprocmask(SIG_BLOCK, ~[] [pid 379] <... setpgid resumed>) = 0 [pid 379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 380] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 380] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 379] <... openat resumed>) = 3 ci2-android-6-1/strace-static-x86_64: Process 376 attached [pid 379] write(3, "1000", 4) = 4 [pid 379] close(3 [pid 380] <... clone3 resumed> => {parent_tid=[382]}, 88) = 382 [pid 379] <... close resumed>) = 0 [pid 380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 380] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] write(1, "executing program\n", 18 [pid 380] <... futex resumed>) = 0 [pid 379] <... write resumed>) = 18 executing program [pid 380] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 379] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] set_robust_list(0x7f5cd2d209a0, 24 [pid 379] <... futex resumed>) = 0 [pid 376] <... set_robust_list resumed>) = 0 [pid 379] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 379] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 379] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITEci2-android-6-1/strace-static-x86_64: Process 378 attached ) = 0 [pid 378] set_robust_list(0x55555618f760, 24 [pid 379] rt_sigprocmask(SIG_BLOCK, ~[] [pid 378] <... set_robust_list resumed>) = 0 [pid 378] rt_sigprocmask(SIG_SETMASK, [] [pid 379] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 378] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 378] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 379] <... clone3 resumed> => {parent_tid=[383]}, 88) = 383 [pid 378] <... prctl resumed>) = 0 [pid 378] setpgid(0, 0 [pid 379] rt_sigprocmask(SIG_SETMASK, [] [pid 378] <... setpgid resumed>) = 0 [pid 379] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 379] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 378] <... openat resumed>) = 3 [pid 378] write(3, "1000", 4) = 4 [pid 378] close(3) = 0 [pid 378] write(1, "executing program\n", 18) = 18 [pid 378] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 378] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 378] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[384]}, 88) = 384 [pid 378] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 378] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 382 attached [pid 382] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 382] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 382] memfd_create("syzkaller", 0) = 3 [pid 382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program [pid 376] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 384 attached [pid 384] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 384] memfd_create("syzkaller", 0) = 3 [pid 382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 376] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 381 attached [pid 376] memfd_create("syzkaller", 0 [pid 381] set_robust_list(0x7f5cd2d209a0, 24 [pid 376] <... memfd_create resumed>) = 3 [pid 381] <... set_robust_list resumed>) = 0 [pid 376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 381] rt_sigprocmask(SIG_SETMASK, [] [pid 376] <... mmap resumed>) = 0x7f5cca900000 [pid 381] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 383 attached [pid 384] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 381] memfd_create("syzkaller", 0) = 3 [pid 381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 382] <... write resumed>) = 1048576 [pid 382] munmap(0x7f5cca900000, 138412032) = 0 [pid 382] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 382] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 382] ioctl(4, LOOP_CLR_FD) = 0 [pid 376] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 383] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 383] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 384] <... write resumed>) = 1048576 [pid 382] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 382] close(4) = 0 [pid 382] close(3) = 0 [pid 382] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = 0 [pid 380] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... futex resumed>) = 1 [pid 382] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 383] memfd_create("syzkaller", 0) = 3 [pid 383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 383] <... mmap resumed>) = 0x7f5cca900000 [pid 382] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 382] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = 0 [pid 380] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... futex resumed>) = 1 [pid 382] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 382] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = 0 [pid 380] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... futex resumed>) = 1 [pid 382] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 382] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = 0 [pid 380] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... futex resumed>) = 1 [pid 382] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 384] munmap(0x7f5cca900000, 138412032 [pid 382] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... munmap resumed>) = 0 [pid 380] <... futex resumed>) = 0 [pid 380] exit_group(0) = ? [pid 382] <... futex resumed>) = ? [pid 382] +++ exited with 0 +++ [pid 380] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=380, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 384] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 384] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 384] ioctl(4, LOOP_CLR_FD) = 0 [pid 381] <... write resumed>) = 1048576 [pid 376] <... write resumed>) = 1048576 [pid 383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 381] munmap(0x7f5cca900000, 138412032 [pid 384] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 384] close(4) = 0 [pid 376] munmap(0x7f5cca900000, 138412032 [pid 384] close(3 [pid 376] <... munmap resumed>) = 0 [pid 376] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 376] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 376] ioctl(4, LOOP_CLR_FD) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 381] <... munmap resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 385 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 376] ioctl(4, LOOP_SET_FD, 3 [pid 381] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] close(4 [pid 381] <... openat resumed>) = 4 [pid 376] <... close resumed>) = 0 [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 384] <... close resumed>) = 0 [pid 384] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = 1 [pid 384] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 384] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = 1 [pid 384] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 384] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = 1 [pid 384] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 384] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = 1 [pid 384] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 384] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] exit_group(0) = ? [pid 376] close(3 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 384] <... futex resumed>) = ? [pid 384] +++ exited with 0 +++ [pid 378] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 385 attached [pid 385] set_robust_list(0x55555618f760, 24) = 0 [pid 385] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 385] setpgid(0, 0) = 0 [pid 385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 385] write(3, "1000", 4 [pid 310] <... restart_syscall resumed>) = 0 [pid 381] ioctl(4, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 386 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 385] <... write resumed>) = 4 [pid 385] close(3) = 0 [pid 385] write(1, "executing program\n", 18) = 18 [pid 385] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 385] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 385] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 385] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 385] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[387]}, 88) = 387 [pid 385] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 385] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 385] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 386 attached [pid 386] set_robust_list(0x55555618f760, 24) = 0 [pid 386] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 386] setpgid(0, 0) = 0 [pid 386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 386] write(3, "1000", 4) = 4 [pid 386] close(3) = 0 [pid 386] write(1, "executing program\n", 18) = 18 [pid 386] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 386] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 386] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 386] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 386] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 386] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program executing program [pid 381] <... ioctl resumed>) = 0 [pid 383] <... write resumed>) = 1048576 [pid 386] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[388]}, 88) = 388 [pid 383] munmap(0x7f5cca900000, 138412032 [pid 376] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 388 attached ci2-android-6-1/strace-static-x86_64: Process 387 attached [pid 386] rt_sigprocmask(SIG_SETMASK, [] [pid 383] <... munmap resumed>) = 0 [pid 376] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 386] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 386] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 386] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 387] set_robust_list(0x7f5cd2d209a0, 24 [pid 376] <... futex resumed>) = 1 [pid 368] <... futex resumed>) = 0 [pid 383] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 388] set_robust_list(0x7f5cd2d209a0, 24 [pid 387] <... set_robust_list resumed>) = 0 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... set_robust_list resumed>) = 0 [pid 387] rt_sigprocmask(SIG_SETMASK, [] [pid 383] <... openat resumed>) = 4 [pid 381] close(4 [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] <... futex resumed>) = 0 [pid 383] ioctl(4, LOOP_SET_FD, 3 [pid 381] <... close resumed>) = 0 [pid 376] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 368] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 383] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] close(3 [pid 376] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 383] ioctl(4, LOOP_CLR_FD [pid 381] <... close resumed>) = 0 [pid 376] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... ioctl resumed>) = 0 [pid 376] <... futex resumed>) = 1 [pid 368] <... futex resumed>) = 0 [pid 376] truncate("./file1", 36262 [pid 368] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 368] <... futex resumed>) = 0 [pid 376] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] <... futex resumed>) = 0 [pid 368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 368] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 368] <... futex resumed>) = 0 [pid 376] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] <... futex resumed>) = 0 [pid 368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] read(-1 [pid 368] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 368] <... futex resumed>) = 0 [pid 381] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 381] <... futex resumed>) = 1 [pid 376] <... futex resumed>) = 0 [pid 368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 381] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] exit_group(0 [pid 376] <... futex resumed>) = ? [pid 368] <... exit_group resumed>) = ? [pid 377] <... futex resumed>) = 0 [pid 376] +++ exited with 0 +++ [pid 368] +++ exited with 0 +++ [pid 383] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 383] close(4) = 0 [pid 383] close(3) = 0 [pid 377] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=368, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 383] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 383] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 387] memfd_create("syzkaller", 0 [pid 377] <... futex resumed>) = 1 [pid 379] <... futex resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 381] <... futex resumed>) = 0 [pid 381] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 379] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 381] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... memfd_create resumed>) = 3 [pid 387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 383] <... futex resumed>) = 0 [pid 379] <... futex resumed>) = 1 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 383] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... mmap resumed>) = 0x7f5cca900000 [pid 379] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... restart_syscall resumed>) = 0 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] <... futex resumed>) = 1 [pid 379] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 379] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 381] <... futex resumed>) = 0 [pid 379] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... openat resumed>) = 3 [pid 383] truncate("./file1", 36262 [pid 381] truncate("./file1", 36262 [pid 383] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 381] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 383] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 1 [pid 381] <... futex resumed>) = 1 [pid 377] <... futex resumed>) = 0 [pid 379] <... futex resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 379] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 379] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] close(3 [pid 383] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 381] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 383] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 381] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 309] <... close resumed>) = 0 [pid 383] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 1 [pid 381] <... futex resumed>) = 1 [pid 379] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 383] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 383] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 379] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 383] read(-1 [pid 381] read(-1 [pid 379] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 383] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 381] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 383] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 0 [pid 381] <... futex resumed>) = 0 [pid 383] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 388] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 388] memfd_create("syzkaller", 0 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 389 [pid 388] <... memfd_create resumed>) = 3 [pid 379] exit_group(0 [pid 377] exit_group(0 [pid 388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 383] <... futex resumed>) = ? [pid 381] <... futex resumed>) = ? [pid 379] <... exit_group resumed>) = ? [pid 377] <... exit_group resumed>) = ? [pid 383] +++ exited with 0 +++ [pid 381] +++ exited with 0 +++ [pid 388] <... mmap resumed>) = 0x7f5cca900000 [pid 388] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 379] +++ exited with 0 +++ [pid 377] +++ exited with 0 +++ [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=379, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=377, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 389 attached ) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 389] set_robust_list(0x55555618f760, 24 [pid 388] <... write resumed>) = 1048576 [pid 387] <... write resumed>) = 1048576 [pid 389] <... set_robust_list resumed>) = 0 [pid 389] rt_sigprocmask(SIG_SETMASK, [] [pid 388] munmap(0x7f5cca900000, 138412032 [pid 387] munmap(0x7f5cca900000, 138412032 [pid 389] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 388] <... munmap resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 387] <... munmap resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 389] <... prctl resumed>) = 0 [pid 388] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 387] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 311] <... openat resumed>) = 3 [pid 387] <... openat resumed>) = 4 [pid 387] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 387] ioctl(4, LOOP_CLR_FD) = 0 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 389] setpgid(0, 0 [pid 388] <... openat resumed>) = 4 [pid 311] ioctl(3, LOOP_CLR_FD [pid 308] <... close resumed>) = 0 [pid 389] <... setpgid resumed>) = 0 [pid 388] ioctl(4, LOOP_SET_FD, 3 [pid 311] <... ioctl resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 388] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 387] ioctl(4, LOOP_SET_FD, 3 [pid 311] close(3 [pid 389] <... openat resumed>) = 3 [pid 388] ioctl(4, LOOP_CLR_FD [pid 311] <... close resumed>) = 0 [pid 389] write(3, "1000", 4 [pid 388] <... ioctl resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 389] <... write resumed>) = 4 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 389] close(3 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 389] <... close resumed>) = 0 executing program [pid 389] write(1, "executing program\n", 18 [pid 388] ioctl(4, LOOP_SET_FD, 3 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 390 [pid 389] <... write resumed>) = 18 [pid 388] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 389] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] close(4 [pid 387] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 389] <... futex resumed>) = 0 [pid 388] <... close resumed>) = 0 [pid 387] close(4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 389] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 388] close(3 [pid 387] <... close resumed>) = 0 [pid 389] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 388] <... close resumed>) = 0 [pid 387] close(3 [pid 389] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 388] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 388] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 389] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 388] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... mmap resumed>) = 0x7f5cd2d00000 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 389] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 388] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 387] <... close resumed>) = 0 [pid 386] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 391 [pid 389] <... mprotect resumed>) = 0 [pid 388] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 387] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] rt_sigprocmask(SIG_BLOCK, ~[] [pid 388] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 387] <... futex resumed>) = 1 [pid 385] <... futex resumed>) = 0 [pid 389] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 388] <... futex resumed>) = 1 [pid 387] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] <... futex resumed>) = 0 [pid 385] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 389] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 388] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 387] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 386] <... futex resumed>) = 0 [pid 385] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... clone3 resumed> => {parent_tid=[392]}, 88) = 392 [pid 388] truncate("./file1", 36262 [pid 387] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 386] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] rt_sigprocmask(SIG_SETMASK, [] [pid 388] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 387] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 388] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... futex resumed>) = 1 [pid 387] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = 0 [pid 389] <... futex resumed>) = 0 [pid 388] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 390 attached [pid 389] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 387] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = 0 [pid 390] set_robust_list(0x55555618f760, 24 [pid 388] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 387] truncate("./file1", 36262 [pid 386] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] <... set_robust_list resumed>) = 0 [pid 388] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 387] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 388] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 387] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... futex resumed>) = 0 [pid 390] rt_sigprocmask(SIG_SETMASK, [] [pid 388] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... futex resumed>) = 1 [pid 386] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... futex resumed>) = 0 [pid 390] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 387] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] <... futex resumed>) = 0 [pid 385] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 391 attached [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 388] read(-1 [pid 387] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 392 attached [pid 391] set_robust_list(0x55555618f760, 24 [pid 390] <... prctl resumed>) = 0 [pid 388] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 387] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 385] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] set_robust_list(0x7f5cd2d209a0, 24 [pid 391] <... set_robust_list resumed>) = 0 [pid 390] setpgid(0, 0 [pid 388] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 391] rt_sigprocmask(SIG_SETMASK, [] [pid 388] <... futex resumed>) = 1 [pid 387] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... futex resumed>) = 0 [pid 390] <... setpgid resumed>) = 0 [pid 392] <... set_robust_list resumed>) = 0 [pid 391] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 388] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... futex resumed>) = 1 [pid 386] exit_group(0 [pid 385] <... futex resumed>) = 0 [pid 392] rt_sigprocmask(SIG_SETMASK, [] [pid 391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 390] <... openat resumed>) = 3 [pid 388] <... futex resumed>) = ? [pid 386] <... exit_group resumed>) = ? [pid 385] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... prctl resumed>) = 0 [pid 388] +++ exited with 0 +++ [pid 386] +++ exited with 0 +++ [pid 385] <... futex resumed>) = 0 [pid 391] setpgid(0, 0 [pid 385] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] <... setpgid resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=386, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 391] <... openat resumed>) = 3 [pid 391] write(3, "1000", 4) = 4 [pid 391] close(3) = 0 [pid 391] write(1, "executing program\n", 18 [pid 387] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) executing program [pid 387] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... write resumed>) = 18 [pid 387] <... futex resumed>) = 1 [pid 385] <... futex resumed>) = 0 [pid 391] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 385] exit_group(0 [pid 391] <... futex resumed>) = 0 [pid 387] <... futex resumed>) = ? [pid 385] <... exit_group resumed>) = ? [pid 391] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 390] write(3, "1000", 4 [pid 387] +++ exited with 0 +++ [pid 385] +++ exited with 0 +++ [pid 391] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=385, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 391] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 391] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 392] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 391] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 390] <... write resumed>) = 4 [pid 391] <... mprotect resumed>) = 0 [pid 392] memfd_create("syzkaller", 0 [pid 391] rt_sigprocmask(SIG_BLOCK, ~[] [pid 390] close(3 [pid 391] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 391] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[393]}, 88) = 393 [pid 391] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 391] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 393 attached [pid 393] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 393] memfd_create("syzkaller", 0) = 3 [pid 393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 307] close(3 [pid 310] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 390] <... close resumed>) = 0 [pid 392] <... memfd_create resumed>) = 3 [pid 390] write(1, "executing program\n", 18 [pid 392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 390] <... write resumed>) = 18 executing program [pid 392] <... mmap resumed>) = 0x7f5cca900000 [pid 390] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 395 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 394 [pid 390] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 392] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 390] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 390] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 390] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[396]}, 88) = 396 [pid 390] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 390] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 395 attached [pid 393] <... write resumed>) = 1048576 [pid 395] set_robust_list(0x55555618f760, 24) = 0 [pid 395] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 395] setpgid(0, 0) = 0 [pid 395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 395] write(3, "1000", 4) = 4 [pid 395] close(3) = 0 executing program [pid 395] write(1, "executing program\n", 18) = 18 [pid 395] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 395] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 395] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 395] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 395] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 395] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 395] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[397]}, 88) = 397 [pid 395] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 395] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 395] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 393] munmap(0x7f5cca900000, 138412032) = 0 [pid 392] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 394 attached ci2-android-6-1/strace-static-x86_64: Process 396 attached [pid 393] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 394] set_robust_list(0x55555618f760, 24 [pid 396] set_robust_list(0x7f5cd2d209a0, 24 [pid 392] munmap(0x7f5cca900000, 138412032 [pid 394] <... set_robust_list resumed>) = 0 [pid 393] <... openat resumed>) = 4 [pid 393] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 393] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 397 attached [pid 397] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 397] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 397] memfd_create("syzkaller", 0 [pid 393] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 393] close(4) = 0 [pid 393] close(3 [pid 394] rt_sigprocmask(SIG_SETMASK, [] [pid 396] <... set_robust_list resumed>) = 0 [pid 394] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 392] <... munmap resumed>) = 0 [pid 396] rt_sigprocmask(SIG_SETMASK, [] [pid 394] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 392] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 393] <... close resumed>) = 0 [pid 393] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... prctl resumed>) = 0 [pid 396] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 392] <... openat resumed>) = 4 [pid 394] setpgid(0, 0 [pid 391] <... futex resumed>) = 0 [pid 396] memfd_create("syzkaller", 0 [pid 394] <... setpgid resumed>) = 0 [pid 392] ioctl(4, LOOP_SET_FD, 3 [pid 391] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 396] <... memfd_create resumed>) = 3 [pid 392] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 394] <... openat resumed>) = 3 [pid 392] ioctl(4, LOOP_CLR_FD [pid 394] write(3, "1000", 4 [pid 396] <... mmap resumed>) = 0x7f5cca900000 [pid 392] <... ioctl resumed>) = 0 [pid 394] <... write resumed>) = 4 [pid 394] close(3 [pid 393] <... futex resumed>) = 1 [pid 393] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 393] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 393] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 393] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 396] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 393] <... futex resumed>) = 1 [pid 394] <... close resumed>) = 0 executing program [pid 394] write(1, "executing program\n", 18) = 18 [pid 394] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 394] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 392] ioctl(4, LOOP_SET_FD, 3 [pid 394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 392] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 394] <... mmap resumed>) = 0x7f5cd2d00000 [pid 392] close(4 [pid 394] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 392] <... close resumed>) = 0 [pid 394] rt_sigprocmask(SIG_BLOCK, ~[] [pid 392] close(3 [pid 394] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 393] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 394] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 393] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] exit_group(0) = ? [pid 393] <... futex resumed>) = ? [pid 394] <... clone3 resumed> => {parent_tid=[398]}, 88) = 398 [pid 394] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 392] <... close resumed>) = 0 [pid 394] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 392] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 392] <... futex resumed>) = 1 [pid 389] <... futex resumed>) = 0 [pid 389] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 389] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... memfd_create resumed>) = 3 [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] +++ exited with 0 +++ [pid 391] +++ exited with 0 +++ [pid 392] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=391, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 392] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 392] <... futex resumed>) = 1 [pid 389] <... futex resumed>) = 0 [pid 389] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 389] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... mmap resumed>) = 0x7f5cca900000 [pid 397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 398 attached [pid 392] truncate("./file1", 36262 [pid 398] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 398] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 398] memfd_create("syzkaller", 0) = 3 [pid 398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 392] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 308] <... restart_syscall resumed>) = 0 [pid 392] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 389] <... futex resumed>) = 0 [pid 389] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 389] <... futex resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 389] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 308] <... openat resumed>) = 3 [pid 392] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] ioctl(3, LOOP_CLR_FD [pid 392] <... futex resumed>) = 1 [pid 389] <... futex resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 392] read(-1 [pid 389] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] close(3 [pid 389] <... futex resumed>) = 0 [pid 392] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 389] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... close resumed>) = 0 [pid 392] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 392] <... futex resumed>) = 1 [pid 389] <... futex resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 389] exit_group(0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 389] <... exit_group resumed>) = ? [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 399 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 392] +++ exited with 0 +++ [pid 389] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=389, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 397] <... write resumed>) = 1048576 [pid 398] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 399 attached [pid 399] set_robust_list(0x55555618f760, 24) = 0 [pid 399] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 399] setpgid(0, 0) = 0 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 399] <... openat resumed>) = 3 [pid 399] write(3, "1000", 4 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 400 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 399] <... write resumed>) = 4 [pid 399] close(3) = 0 executing program [pid 399] write(1, "executing program\n", 18) = 18 [pid 396] <... write resumed>) = 1048576 [pid 399] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 400 attached [pid 399] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 399] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 399] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 399] rt_sigprocmask(SIG_BLOCK, ~[] [pid 397] munmap(0x7f5cca900000, 138412032 [pid 399] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 400] set_robust_list(0x55555618f760, 24 [pid 396] <... munmap resumed>) = 0 [pid 399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 396] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 400] <... set_robust_list resumed>) = 0 [pid 397] <... munmap resumed>) = 0 [pid 399] <... clone3 resumed> => {parent_tid=[401]}, 88) = 401 [pid 399] rt_sigprocmask(SIG_SETMASK, [] [pid 396] <... openat resumed>) = 4 [pid 400] rt_sigprocmask(SIG_SETMASK, [] [pid 396] ioctl(4, LOOP_SET_FD, 3 [pid 400] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 400] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 396] ioctl(4, LOOP_CLR_FD [pid 400] <... prctl resumed>) = 0 [pid 396] <... ioctl resumed>) = 0 [pid 400] setpgid(0, 0) = 0 [pid 400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 399] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 400] <... openat resumed>) = 3 [pid 400] write(3, "1000", 4) = 4 [pid 400] close(3) = 0 executing program [pid 400] write(1, "executing program\n", 18) = 18 [pid 400] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] ioctl(4, LOOP_SET_FD, 3 [pid 400] <... futex resumed>) = 0 [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 400] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 396] close(4 [pid 400] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 400] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 396] <... close resumed>) = 0 [pid 400] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 396] close(3 [pid 400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 399] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 397] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 397] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 400] <... mmap resumed>) = 0x7f5cd2d00000 [pid 396] <... close resumed>) = 0 [pid 400] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 396] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] <... mprotect resumed>) = 0 [pid 396] <... futex resumed>) = 1 [pid 390] <... futex resumed>) = 0 [pid 400] rt_sigprocmask(SIG_BLOCK, ~[] [pid 396] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 390] <... futex resumed>) = 0 [pid 397] ioctl(4, LOOP_CLR_FD [pid 390] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... ioctl resumed>) = 0 [pid 396] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 400] <... clone3 resumed> => {parent_tid=[402]}, 88) = 402 [pid 400] rt_sigprocmask(SIG_SETMASK, [] [pid 396] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 400] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 396] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 390] <... futex resumed>) = 0 [pid 396] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 390] <... futex resumed>) = 0 [pid 396] truncate("./file1", 36262 [pid 390] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 396] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 396] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] <... futex resumed>) = 0 [pid 396] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 390] <... futex resumed>) = 0 [pid 396] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 390] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 396] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 396] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] <... futex resumed>) = 0 [pid 396] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 390] <... futex resumed>) = 0 [pid 396] read(-1 [pid 390] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 396] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 396] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] ioctl(4, LOOP_SET_FD, 3 [pid 396] <... futex resumed>) = 1 [pid 390] <... futex resumed>) = 0 [pid 396] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] exit_group(0 [pid 397] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] <... futex resumed>) = ? [pid 390] <... exit_group resumed>) = ? [pid 397] close(4) = 0 [pid 397] close(3) = 0 [pid 396] +++ exited with 0 +++ [pid 390] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 398] <... write resumed>) = 1048576 [pid 398] munmap(0x7f5cca900000, 138412032) = 0 [pid 398] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 397] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 395] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 395] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 398] ioctl(4, LOOP_SET_FD, 3 [pid 397] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 398] ioctl(4, LOOP_CLR_FD) = 0 [pid 397] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 395] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 395] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 397] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 395] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 395] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 397] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 311] <... ioctl resumed>) = 0 [pid 397] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 311] close(3 [pid 397] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... close resumed>) = 0 [pid 398] ioctl(4, LOOP_SET_FD, 3 [pid 397] <... futex resumed>) = 1 [pid 395] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] read(-1 [pid 395] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 398] close(4 [pid 397] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 395] <... futex resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 398] <... close resumed>) = 0 [pid 397] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] close(3 [pid 397] <... futex resumed>) = 0 [pid 395] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 403 ci2-android-6-1/strace-static-x86_64: Process 401 attached [pid 398] <... close resumed>) = 0 [pid 397] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 395] exit_group(0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 401] set_robust_list(0x7f5cd2d209a0, 24 [pid 397] <... futex resumed>) = ? [pid 395] <... exit_group resumed>) = ? [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 403 attached ci2-android-6-1/strace-static-x86_64: Process 402 attached [pid 401] <... set_robust_list resumed>) = 0 [pid 397] +++ exited with 0 +++ [pid 395] +++ exited with 0 +++ [pid 403] set_robust_list(0x55555618f760, 24 [pid 402] set_robust_list(0x7f5cd2d209a0, 24 [pid 401] rt_sigprocmask(SIG_SETMASK, [] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=395, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 403] <... set_robust_list resumed>) = 0 [pid 402] <... set_robust_list resumed>) = 0 [pid 401] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 403] rt_sigprocmask(SIG_SETMASK, [] [pid 402] rt_sigprocmask(SIG_SETMASK, [] [pid 401] memfd_create("syzkaller", 0 [pid 403] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 402] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 403] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 402] memfd_create("syzkaller", 0 [pid 401] <... memfd_create resumed>) = 3 [pid 403] <... prctl resumed>) = 0 [pid 402] <... memfd_create resumed>) = 3 [pid 401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 403] setpgid(0, 0 [pid 402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 403] <... setpgid resumed>) = 0 [pid 402] <... mmap resumed>) = 0x7f5cca900000 [pid 401] <... mmap resumed>) = 0x7f5cca900000 [pid 403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 402] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] <... restart_syscall resumed>) = 0 [pid 398] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 394] <... futex resumed>) = 0 [pid 398] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 394] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 398] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 394] <... futex resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 398] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] ioctl(3, LOOP_CLR_FD [pid 398] <... futex resumed>) = 0 [pid 394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... ioctl resumed>) = 0 [pid 398] truncate("./file1", 36262 [pid 394] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] close(3 [pid 398] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 394] <... futex resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 398] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 403] <... openat resumed>) = 3 [pid 398] <... futex resumed>) = 0 [pid 394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 403] write(3, "1000", 4 [pid 398] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 394] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 403] <... write resumed>) = 4 [pid 398] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 394] <... futex resumed>) = 0 [pid 403] close(3 [pid 398] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 404 [pid 403] <... close resumed>) = 0 [pid 398] <... futex resumed>) = 0 [pid 394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 403] write(1, "executing program\n", 18 [pid 398] read(-1 [pid 394] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 403] <... write resumed>) = 18 [pid 398] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 394] <... futex resumed>) = 0 [pid 403] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] <... futex resumed>) = 0 [pid 394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 398] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 394] exit_group(0 [pid 398] <... futex resumed>) = ? [pid 394] <... exit_group resumed>) = ? [pid 398] +++ exited with 0 +++ [pid 401] <... write resumed>) = 1048576 [pid 394] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=394, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 404 attached [pid 404] set_robust_list(0x55555618f760, 24) = 0 [pid 404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 404] setpgid(0, 0) = 0 [pid 403] <... futex resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 403] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 403] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 403] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 404] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 405 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 404] write(3, "1000", 4 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 404] <... write resumed>) = 4 [pid 403] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 404] close(3) = 0 [pid 404] write(1, "executing program\n", 18) = 18 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 404] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 404] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 404] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 404] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 404] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 404] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 403] <... mmap resumed>) = 0x7f5cd2d00000 [pid 404] <... clone3 resumed> => {parent_tid=[406]}, 88) = 406 [pid 404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 404] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 401] munmap(0x7f5cca900000, 138412032) = 0 [pid 401] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 ci2-android-6-1/strace-static-x86_64: Process 405 attached [pid 403] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 403] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 403] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 406 attached [pid 406] set_robust_list(0x7f5cd2d209a0, 24 [pid 403] <... clone3 resumed> => {parent_tid=[407]}, 88) = 407 [pid 403] rt_sigprocmask(SIG_SETMASK, [] [pid 401] ioctl(4, LOOP_SET_FD, 3 [pid 406] <... set_robust_list resumed>) = 0 [pid 406] rt_sigprocmask(SIG_SETMASK, [] [pid 403] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 406] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 403] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 406] memfd_create("syzkaller", 0 [pid 403] <... futex resumed>) = 0 [pid 406] <... memfd_create resumed>) = 3 [pid 405] set_robust_list(0x55555618f760, 24 [pid 403] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 401] ioctl(4, LOOP_CLR_FD [pid 406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 405] <... set_robust_list resumed>) = 0 [pid 401] <... ioctl resumed>) = 0 [pid 405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 405] setpgid(0, 0) = 0 [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 405] write(3, "1000", 4) = 4 [pid 405] close(3 [pid 401] ioctl(4, LOOP_SET_FD, 3 [pid 406] <... mmap resumed>) = 0x7f5cca900000 [pid 405] <... close resumed>) = 0 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] write(1, "executing program\n", 18 [pid 401] close(4 [pid 405] <... write resumed>) = 18 [pid 401] <... close resumed>) = 0 executing program [pid 405] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] close(3 [pid 405] <... futex resumed>) = 0 [pid 405] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 405] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 405] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[408]}, 88) = 408 [pid 405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 405] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... close resumed>) = 0 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 401] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] <... futex resumed>) = 1 [pid 401] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 401] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 401] <... futex resumed>) = 1 [pid 399] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] truncate("./file1", 36262 [pid 399] <... futex resumed>) = 0 [pid 401] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 399] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 399] <... futex resumed>) = 0 [pid 401] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 399] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 399] <... futex resumed>) = 0 [pid 401] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] <... futex resumed>) = 0 [pid 399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 401] read(-1 [pid 399] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 399] <... futex resumed>) = 0 [pid 401] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] <... futex resumed>) = 0 [pid 399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 401] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] exit_group(0 [pid 401] <... futex resumed>) = ? [pid 399] <... exit_group resumed>) = ? [pid 402] <... write resumed>) = 1048576 [pid 401] +++ exited with 0 +++ [pid 399] +++ exited with 0 +++ [pid 402] munmap(0x7f5cca900000, 138412032 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 ci2-android-6-1/strace-static-x86_64: Process 408 attached [pid 402] <... munmap resumed>) = 0 [pid 402] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 402] <... openat resumed>) = 4 [pid 308] <... openat resumed>) = 3 [pid 402] ioctl(4, LOOP_SET_FD, 3 [pid 308] ioctl(3, LOOP_CLR_FDci2-android-6-1/strace-static-x86_64: Process 407 attached [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... ioctl resumed>) = 0 [pid 407] set_robust_list(0x7f5cd2d209a0, 24 [pid 402] ioctl(4, LOOP_CLR_FD [pid 308] close(3 [pid 408] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 408] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 408] memfd_create("syzkaller", 0) = 3 [pid 408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 308] <... close resumed>) = 0 [pid 402] <... ioctl resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 407] <... set_robust_list resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 407] rt_sigprocmask(SIG_SETMASK, [] [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 407] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 407] memfd_create("syzkaller", 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 409 [pid 407] <... memfd_create resumed>) = 3 [pid 402] ioctl(4, LOOP_SET_FD, 3 [pid 407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 407] <... mmap resumed>) = 0x7f5cca900000 [pid 402] close(4 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 402] <... close resumed>) = 0 [pid 402] close(3 [pid 408] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 409 attached [pid 409] set_robust_list(0x55555618f760, 24) = 0 [pid 407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 409] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 409] setpgid(0, 0 [pid 402] <... close resumed>) = 0 [pid 409] <... setpgid resumed>) = 0 [pid 409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 406] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 402] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... openat resumed>) = 3 [pid 409] write(3, "1000", 4) = 4 [pid 409] close(3) = 0 [pid 409] write(1, "executing program\n", 18) = 18 executing program [pid 409] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 409] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 409] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 409] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 402] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 402] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 400] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 400] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 409] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 409] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 402] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 400] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] truncate("./file1", 36262 [pid 400] <... futex resumed>) = 0 [pid 400] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 402] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... clone3 resumed> => {parent_tid=[410]}, 88) = 410 [pid 408] <... write resumed>) = 1048576 [pid 409] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 409] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 409] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 408] munmap(0x7f5cca900000, 138412032) = 0 [pid 408] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 408] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 408] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 410 attached [pid 410] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 410] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 410] memfd_create("syzkaller", 0 [pid 408] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 408] close(4) = 0 [pid 408] close(3) = 0 [pid 402] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 402] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 400] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 400] <... futex resumed>) = 0 [pid 402] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] <... futex resumed>) = 0 [pid 400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 402] read(-1 [pid 400] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 402] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 400] <... futex resumed>) = 0 [pid 402] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] exit_group(0 [pid 402] <... futex resumed>) = ? [pid 400] <... exit_group resumed>) = ? [pid 410] <... memfd_create resumed>) = 3 [pid 410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 402] +++ exited with 0 +++ [pid 400] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=400, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 406] <... write resumed>) = 1048576 [pid 408] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 408] <... futex resumed>) = 1 [pid 408] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 408] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 408] <... futex resumed>) = 1 [pid 408] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 408] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 408] <... futex resumed>) = 1 [pid 408] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 408] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] munmap(0x7f5cca900000, 138412032 [pid 309] <... restart_syscall resumed>) = 0 [pid 408] <... futex resumed>) = 1 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 406] <... munmap resumed>) = 0 [pid 406] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 309] <... openat resumed>) = 3 [pid 406] <... openat resumed>) = 4 [pid 309] ioctl(3, LOOP_CLR_FD [pid 406] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... ioctl resumed>) = 0 [pid 406] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] close(3 [pid 406] ioctl(4, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 408] read(-1 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 406] <... ioctl resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 408] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 408] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] exit_group(0) = ? [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 411 [pid 408] <... futex resumed>) = ? [pid 408] +++ exited with 0 +++ [pid 405] +++ exited with 0 +++ [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 410] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 410] munmap(0x7f5cca900000, 138412032) = 0 [pid 410] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 410] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 410] ioctl(4, LOOP_CLR_FD) = 0 [pid 407] <... write resumed>) = 1048576 [pid 406] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 406] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 411 attached [pid 407] munmap(0x7f5cca900000, 138412032 [pid 406] close(4 [pid 411] set_robust_list(0x55555618f760, 24 [pid 407] <... munmap resumed>) = 0 [pid 406] <... close resumed>) = 0 [pid 411] <... set_robust_list resumed>) = 0 [pid 407] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 406] close(3 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 412 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 410] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 410] close(4) = 0 [pid 410] close(3 [pid 406] <... close resumed>) = 0 [pid 411] rt_sigprocmask(SIG_SETMASK, [] [pid 406] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 407] <... openat resumed>) = 4 [pid 406] <... futex resumed>) = 1 [pid 404] <... futex resumed>) = 0 [pid 404] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 407] ioctl(4, LOOP_SET_FD, 3 [pid 411] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 407] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 406] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 404] <... futex resumed>) = 0 [pid 411] <... prctl resumed>) = 0 [pid 407] ioctl(4, LOOP_CLR_FD [pid 406] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 404] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] <... futex resumed>) = 1 [pid 407] <... ioctl resumed>) = 0 [pid 404] <... futex resumed>) = 0 [pid 411] setpgid(0, 0 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 411] <... setpgid resumed>) = 0 [pid 406] truncate("./file1", 36262) = -1 EISDIR (Is a directory) ci2-android-6-1/strace-static-x86_64: Process 412 attached [pid 411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 406] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] set_robust_list(0x55555618f760, 24) = 0 [pid 411] <... openat resumed>) = 3 [pid 406] <... futex resumed>) = 1 [pid 404] <... futex resumed>) = 0 [pid 412] rt_sigprocmask(SIG_SETMASK, [] [pid 411] write(3, "1000", 4 [pid 406] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 404] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 411] <... write resumed>) = 4 [pid 406] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 404] <... futex resumed>) = 0 [pid 412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 411] close(3 [pid 406] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... prctl resumed>) = 0 [pid 411] <... close resumed>) = 0 [pid 406] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 412] setpgid(0, 0 [pid 411] write(1, "executing program\n", 18 [pid 407] ioctl(4, LOOP_SET_FD, 3 executing program [pid 406] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... setpgid resumed>) = 0 [pid 411] <... write resumed>) = 18 [pid 407] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 406] <... futex resumed>) = 1 [pid 404] <... futex resumed>) = 0 [pid 412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 411] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] close(4 [pid 406] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 404] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... openat resumed>) = 3 [pid 411] <... futex resumed>) = 0 [pid 407] <... close resumed>) = 0 [pid 406] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 404] <... futex resumed>) = 0 [pid 412] write(3, "1000", 4 [pid 411] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 407] close(3 [pid 406] read(-1 [pid 404] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 411] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 410] <... close resumed>) = 0 [pid 406] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 411] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 407] <... close resumed>) = 0 [pid 406] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... write resumed>) = 4 [pid 411] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 407] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] <... futex resumed>) = 1 [pid 404] <... futex resumed>) = 0 [pid 412] close(3 [pid 411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 407] <... futex resumed>) = 1 [pid 406] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 404] exit_group(0 [pid 403] <... futex resumed>) = 0 [pid 412] <... close resumed>) = 0 [pid 411] <... mmap resumed>) = 0x7f5cd2d00000 [pid 407] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] <... futex resumed>) = ? [pid 404] <... exit_group resumed>) = ? [pid 403] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] write(1, "executing program\n", 18 [pid 411] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 407] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] +++ exited with 0 +++ [pid 404] +++ exited with 0 +++ [pid 403] <... futex resumed>) = 0 executing program [pid 412] <... write resumed>) = 18 [pid 411] <... mprotect resumed>) = 0 [pid 407] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 403] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=404, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=0} --- [pid 412] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] rt_sigprocmask(SIG_BLOCK, ~[] [pid 407] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 412] <... futex resumed>) = 0 [pid 411] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 407] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 411] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 412] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 407] <... futex resumed>) = 1 [pid 403] <... futex resumed>) = 0 [pid 412] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 407] truncate("./file1", 36262 [pid 403] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 410] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = 0 [pid 409] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 409] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 411] <... clone3 resumed> => {parent_tid=[413]}, 88) = 413 [pid 407] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 403] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 411] rt_sigprocmask(SIG_SETMASK, [] [pid 407] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] <... mmap resumed>) = 0x7f5cd2d00000 [pid 411] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 407] <... futex resumed>) = 0 [pid 403] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 411] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 403] <... futex resumed>) = 0 [pid 412] <... mprotect resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 407] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 403] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] rt_sigprocmask(SIG_BLOCK, ~[] [pid 411] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 412] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 407] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 407] <... futex resumed>) = 1 [pid 403] <... futex resumed>) = 0 [pid 407] read(-1 [pid 403] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... clone3 resumed> => {parent_tid=[414]}, 88) = 414 [pid 407] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 403] <... futex resumed>) = 0 [pid 412] rt_sigprocmask(SIG_SETMASK, [] [pid 407] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 407] <... futex resumed>) = 0 [pid 403] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 412] <... futex resumed>) = 0 [pid 403] exit_group(0 [pid 412] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 407] <... futex resumed>) = ? [pid 403] <... exit_group resumed>) = ? [pid 410] <... futex resumed>) = 1 [pid 410] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 407] +++ exited with 0 +++ [pid 403] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=403, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ci2-android-6-1/strace-static-x86_64: Process 413 attached [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 311] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 413] set_robust_list(0x7f5cd2d209a0, 24 [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] ioctl(3, LOOP_CLR_FD [pid 413] <... set_robust_list resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 414 attached [pid 413] rt_sigprocmask(SIG_SETMASK, [] [pid 410] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 311] close(3 [pid 310] close(3 [pid 413] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 410] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 410] <... futex resumed>) = 1 [pid 409] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 410] truncate("./file1", 36262 [pid 409] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 410] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 409] <... futex resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 410] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = 0 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 415 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 416 [pid 410] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 409] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 410] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 409] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 410] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = 0 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 410] read(-1 [pid 409] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 409] <... futex resumed>) = 0 [pid 410] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = 0 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 410] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] exit_group(0 [pid 410] <... futex resumed>) = ? [pid 409] <... exit_group resumed>) = ? [pid 410] +++ exited with 0 +++ [pid 409] +++ exited with 0 +++ [pid 413] memfd_create("syzkaller", 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=409, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 413] <... memfd_create resumed>) = 3 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 416 attached [pid 416] set_robust_list(0x55555618f760, 24) = 0 [pid 416] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 416] setpgid(0, 0) = 0 [pid 416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program executing program executing program [pid 416] write(3, "1000", 4) = 4 [pid 416] close(3) = 0 [pid 416] write(1, "executing program\n", 18) = 18 [pid 416] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 416] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 416] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 416] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 416] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 416] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 308] <... restart_syscall resumed>) = 0 [pid 416] <... clone3 resumed> => {parent_tid=[417]}, 88) = 417 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 416] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... openat resumed>) = 3 [pid 416] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 416] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... ioctl resumed>) = 0 [pid 416] <... futex resumed>) = 0 [pid 416] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 415 attached [pid 415] set_robust_list(0x55555618f760, 24) = 0 [pid 415] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 415] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] close(3 [pid 415] <... prctl resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 415] setpgid(0, 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 415] <... setpgid resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 415] <... openat resumed>) = 3 [pid 415] write(3, "1000", 4) = 4 [pid 415] close(3) = 0 [pid 415] write(1, "executing program\n", 18) = 18 [pid 415] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 418 [pid 415] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 415] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 415] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 415] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 415] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 415] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 415] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 415] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[419]}, 88) = 419 [pid 415] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 415] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 415] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 413] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 418 attached [pid 418] set_robust_list(0x55555618f760, 24) = 0 [pid 418] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 418] setpgid(0, 0) = 0 [pid 418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 418] write(3, "1000", 4) = 4 [pid 418] close(3) = 0 [pid 418] write(1, "executing program\n", 18) = 18 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 418] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 418] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 418] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 418] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 418] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 417 attached [pid 417] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 417] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 418] <... clone3 resumed> => {parent_tid=[420]}, 88) = 420 [pid 417] memfd_create("syzkaller", 0 [pid 418] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 418] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 417] <... memfd_create resumed>) = 3 [pid 417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 419 attached [pid 419] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 419] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 419] memfd_create("syzkaller", 0) = 3 [pid 419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 413] <... write resumed>) = 1048576 [pid 414] set_robust_list(0x7f5cd2d209a0, 24 [pid 419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 414] <... set_robust_list resumed>) = 0 [pid 414] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 420 attached [pid 413] munmap(0x7f5cca900000, 138412032 [pid 414] memfd_create("syzkaller", 0 [pid 413] <... munmap resumed>) = 0 [pid 414] <... memfd_create resumed>) = 3 [pid 413] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 420] set_robust_list(0x7f5cd2d209a0, 24 [pid 414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 413] <... openat resumed>) = 4 [pid 420] <... set_robust_list resumed>) = 0 [pid 414] <... mmap resumed>) = 0x7f5cca900000 [pid 420] rt_sigprocmask(SIG_SETMASK, [] [pid 413] ioctl(4, LOOP_SET_FD, 3 [pid 419] <... write resumed>) = 1048576 [pid 419] munmap(0x7f5cca900000, 138412032) = 0 [pid 419] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 419] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 419] ioctl(4, LOOP_CLR_FD) = 0 [pid 413] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 419] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 419] close(4) = 0 [pid 419] close(3) = 0 [pid 417] <... write resumed>) = 1048576 [pid 420] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 419] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] munmap(0x7f5cca900000, 138412032 [pid 414] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 413] ioctl(4, LOOP_CLR_FD) = 0 [pid 420] memfd_create("syzkaller", 0) = 3 [pid 420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 413] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 413] close(4) = 0 [pid 413] close(3) = 0 [pid 413] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... futex resumed>) = 1 [pid 413] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 413] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... futex resumed>) = 1 [pid 413] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 413] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... futex resumed>) = 1 [pid 415] <... futex resumed>) = 0 [pid 419] <... futex resumed>) = 1 [pid 415] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 415] <... futex resumed>) = 0 [pid 415] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 417] <... munmap resumed>) = 0 [pid 419] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 413] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 413] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... futex resumed>) = 1 [pid 413] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 413] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] exit_group(0) = ? [pid 413] <... futex resumed>) = ? [pid 419] <... futex resumed>) = 1 [pid 415] <... futex resumed>) = 0 [pid 417] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 419] truncate("./file1", 36262 [pid 415] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 419] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 415] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] <... openat resumed>) = 4 [pid 419] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... write resumed>) = 1048576 [pid 419] <... futex resumed>) = 1 [pid 417] ioctl(4, LOOP_SET_FD, 3 [pid 415] <... futex resumed>) = 0 [pid 419] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 415] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 417] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... futex resumed>) = 0 [pid 419] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 415] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 417] ioctl(4, LOOP_CLR_FD [pid 419] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... ioctl resumed>) = 0 [pid 419] <... futex resumed>) = 1 [pid 415] <... futex resumed>) = 0 [pid 419] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 415] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 415] <... futex resumed>) = 0 [pid 419] read(-1 [pid 415] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 419] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 417] ioctl(4, LOOP_SET_FD, 3 [pid 415] <... futex resumed>) = 0 [pid 419] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 417] close(4 [pid 415] exit_group(0 [pid 419] <... futex resumed>) = ? [pid 417] <... close resumed>) = 0 [pid 415] <... exit_group resumed>) = ? [pid 419] +++ exited with 0 +++ [pid 413] +++ exited with 0 +++ [pid 411] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=411, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 415] +++ exited with 0 +++ [pid 417] close(3 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=415, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3 [pid 417] <... close resumed>) = 0 [pid 417] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... close resumed>) = 0 [pid 417] <... futex resumed>) = 1 [pid 416] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 417] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 416] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 416] <... futex resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 416] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 417] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 417] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 421 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 417] <... futex resumed>) = 1 [pid 416] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 417] truncate("./file1", 36262 [pid 416] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 416] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 416] <... futex resumed>) = 0 [pid 417] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 416] <... futex resumed>) = 0 [pid 417] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 416] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 417] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 416] <... futex resumed>) = 0 [pid 417] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 416] <... futex resumed>) = 0 [pid 417] read(-1 [pid 416] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 417] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 416] <... futex resumed>) = 0 [pid 417] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] exit_group(0 [pid 417] <... futex resumed>) = ? [pid 416] <... exit_group resumed>) = ? [pid 417] +++ exited with 0 +++ [pid 309] <... restart_syscall resumed>) = 0 [pid 416] +++ exited with 0 +++ [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=416, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] ioctl(3, LOOP_CLR_FDci2-android-6-1/strace-static-x86_64: Process 421 attached [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 309] <... ioctl resumed>) = 0 [pid 421] set_robust_list(0x55555618f760, 24 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 422 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 414] munmap(0x7f5cca900000, 138412032) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 414] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 414] <... openat resumed>) = 4 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 414] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 414] ioctl(4, LOOP_CLR_FD) = 0 [pid 421] <... set_robust_list resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 423 [pid 414] ioctl(4, LOOP_SET_FD, 3 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 421] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] close(4) = 0 [pid 414] close(3ci2-android-6-1/strace-static-x86_64: Process 422 attached [pid 421] prctl(PR_SET_PDEATHSIG, SIGKILLci2-android-6-1/strace-static-x86_64: Process 423 attached [pid 422] set_robust_list(0x55555618f760, 24 [pid 421] <... prctl resumed>) = 0 [pid 420] <... write resumed>) = 1048576 [pid 422] <... set_robust_list resumed>) = 0 [pid 421] setpgid(0, 0 [pid 423] set_robust_list(0x55555618f760, 24 [pid 421] <... setpgid resumed>) = 0 [pid 423] <... set_robust_list resumed>) = 0 [pid 422] rt_sigprocmask(SIG_SETMASK, [] [pid 421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 423] rt_sigprocmask(SIG_SETMASK, [] [pid 422] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 421] <... openat resumed>) = 3 [pid 414] <... close resumed>) = 0 [pid 421] write(3, "1000", 4 [pid 423] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 422] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 421] <... write resumed>) = 4 [pid 423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 422] <... prctl resumed>) = 0 [pid 421] close(3) = 0 [pid 422] setpgid(0, 0 [pid 423] <... prctl resumed>) = 0 [pid 421] write(1, "executing program\n", 18 [pid 422] <... setpgid resumed>) = 0 [pid 421] <... write resumed>) = 18 [pid 423] setpgid(0, 0) = 0 [pid 422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC executing program [pid 421] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... openat resumed>) = 3 [pid 421] <... futex resumed>) = 0 [pid 423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 422] write(3, "1000", 4 [pid 421] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 422] <... write resumed>) = 4 [pid 421] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 423] <... openat resumed>) = 3 [pid 422] close(3 [pid 421] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 423] write(3, "1000", 4 [pid 422] <... close resumed>) = 0 [pid 421] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 422] write(1, "executing program\n", 18 [pid 421] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 423] <... write resumed>) = 4 [pid 422] <... write resumed>) = 18 executing program [pid 421] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 423] close(3 [pid 422] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... mprotect resumed>) = 0 [pid 422] <... futex resumed>) = 0 [pid 421] rt_sigprocmask(SIG_BLOCK, ~[] [pid 423] <... close resumed>) = 0 [pid 421] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 422] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 421] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 423] write(1, "executing program\n", 18) = 18 [pid 422] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 423] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 421] <... clone3 resumed> => {parent_tid=[424]}, 88) = 424 executing program [pid 423] <... futex resumed>) = 0 [pid 422] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 421] rt_sigprocmask(SIG_SETMASK, [] [pid 423] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 421] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 420] munmap(0x7f5cca900000, 138412032 [pid 414] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... mmap resumed>) = 0x7f5cd2d00000 [pid 421] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 421] <... futex resumed>) = 0 [pid 422] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 421] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 422] <... mprotect resumed>) = 0 [pid 423] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 420] <... munmap resumed>) = 0 [pid 414] <... futex resumed>) = 1 [pid 412] <... futex resumed>) = 0 [pid 420] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 414] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 412] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... openat resumed>) = 4 [pid 414] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 412] <... futex resumed>) = 0 [pid 420] ioctl(4, LOOP_SET_FD, 3 [pid 414] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] <... futex resumed>) = 0 [pid 412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] ioctl(4, LOOP_CLR_FD [pid 414] truncate("./file1", 36262 [pid 412] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... ioctl resumed>) = 0 [pid 414] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 412] <... futex resumed>) = 0 [pid 414] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 414] <... futex resumed>) = 0 [pid 412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 412] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 412] <... futex resumed>) = 0 [pid 414] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 414] <... futex resumed>) = 0 [pid 412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] read(-1 [pid 412] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 412] <... futex resumed>) = 0 [pid 414] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] ioctl(4, LOOP_SET_FD, 3 [pid 414] <... futex resumed>) = 0 [pid 412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ci2-android-6-1/strace-static-x86_64: Process 424 attached [pid 423] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 422] rt_sigprocmask(SIG_BLOCK, ~[] [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 412] exit_group(0 [pid 424] set_robust_list(0x7f5cd2d209a0, 24 [pid 420] close(4 [pid 414] <... futex resumed>) = ? [pid 412] <... exit_group resumed>) = ? [pid 424] <... set_robust_list resumed>) = 0 [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 422] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 420] <... close resumed>) = 0 [pid 414] +++ exited with 0 +++ [pid 412] +++ exited with 0 +++ [pid 424] rt_sigprocmask(SIG_SETMASK, [] [pid 423] <... mmap resumed>) = 0x7f5cd2d00000 [pid 422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 420] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=412, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 424] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 423] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 420] <... close resumed>) = 0 [pid 424] memfd_create("syzkaller", 0 [pid 423] <... mprotect resumed>) = 0 [pid 422] <... clone3 resumed> => {parent_tid=[425]}, 88) = 425 [pid 420] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... memfd_create resumed>) = 3 [pid 423] rt_sigprocmask(SIG_BLOCK, ~[] [pid 422] rt_sigprocmask(SIG_SETMASK, [] [pid 420] <... futex resumed>) = 1 [pid 418] <... futex resumed>) = 0 [pid 424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 423] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 422] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 420] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 418] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... mmap resumed>) = 0x7f5cca900000 [pid 423] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 422] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 418] <... futex resumed>) = 0 [pid 424] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 422] <... futex resumed>) = 0 [pid 420] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 426 attached [pid 423] <... clone3 resumed> => {parent_tid=[426]}, 88) = 426 [pid 422] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 426] set_robust_list(0x7f5cd2d209a0, 24 [pid 423] rt_sigprocmask(SIG_SETMASK, [] [pid 418] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 418] <... futex resumed>) = 0 [pid 423] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 423] <... futex resumed>) = 0 [pid 426] <... set_robust_list resumed>) = 0 [pid 423] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 426] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 425 attached , NULL, 8) = 0 [pid 426] memfd_create("syzkaller", 0 [pid 425] set_robust_list(0x7f5cd2d209a0, 24 [pid 420] <... futex resumed>) = 1 [pid 418] <... futex resumed>) = 0 [pid 426] <... memfd_create resumed>) = 3 [pid 425] <... set_robust_list resumed>) = 0 [pid 420] truncate("./file1", 36262 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 425] rt_sigprocmask(SIG_SETMASK, [] [pid 420] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 426] <... mmap resumed>) = 0x7f5cca900000 [pid 425] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 420] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] <... futex resumed>) = 0 [pid 420] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 418] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 418] <... futex resumed>) = 0 [pid 420] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] read(-1 [pid 418] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 418] <... futex resumed>) = 0 [pid 420] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 418] exit_group(0 [pid 425] memfd_create("syzkaller", 0 [pid 420] <... futex resumed>) = ? [pid 418] <... exit_group resumed>) = ? [pid 426] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 425] <... memfd_create resumed>) = 3 [pid 420] +++ exited with 0 +++ [pid 418] +++ exited with 0 +++ [pid 425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 424] <... write resumed>) = 1048576 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=418, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 425] <... mmap resumed>) = 0x7f5cca900000 [pid 424] munmap(0x7f5cca900000, 138412032 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 424] <... munmap resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 424] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... openat resumed>) = 3 [pid 424] <... openat resumed>) = 4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 424] ioctl(4, LOOP_SET_FD, 3 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... openat resumed>) = 3 [pid 307] close(3 [pid 424] ioctl(4, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 424] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 427 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 424] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 424] close(4) = 0 [pid 424] close(3 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 428 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 424] <... close resumed>) = 0 [pid 426] <... write resumed>) = 1048576 [pid 424] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 421] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 421] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 424] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 421] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] truncate("./file1", 36262 [pid 421] <... futex resumed>) = 0 [pid 424] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 421] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 424] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 421] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 421] <... futex resumed>) = 0 [pid 424] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] <... futex resumed>) = 0 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 424] read(-1 [pid 421] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 421] <... futex resumed>) = 0 [pid 424] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] <... futex resumed>) = 0 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 424] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] exit_group(0 [pid 424] <... futex resumed>) = ? [pid 421] <... exit_group resumed>) = ? [pid 424] +++ exited with 0 +++ [pid 421] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=421, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 426] munmap(0x7f5cca900000, 138412032 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 426] <... munmap resumed>) = 0 [pid 426] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 426] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 426] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 428 attached [pid 428] set_robust_list(0x55555618f760, 24) = 0 [pid 428] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 428] setpgid(0, 0) = 0 [pid 428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 426] ioctl(4, LOOP_SET_FD, 3 [pid 428] <... openat resumed>) = 3 [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] write(3, "1000", 4 [pid 426] close(4 [pid 428] <... write resumed>) = 4 [pid 426] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 427 attached [pid 428] close(3 [pid 426] close(3 [pid 428] <... close resumed>) = 0 [pid 427] set_robust_list(0x55555618f760, 24 [pid 426] <... close resumed>) = 0 [pid 428] write(1, "executing program\n", 18 [pid 427] <... set_robust_list resumed>) = 0 executing program [pid 428] <... write resumed>) = 18 [pid 427] rt_sigprocmask(SIG_SETMASK, [] [pid 428] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 428] <... futex resumed>) = 0 [pid 427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 428] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 427] <... prctl resumed>) = 0 [pid 428] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 427] setpgid(0, 0 [pid 428] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 427] <... setpgid resumed>) = 0 [pid 428] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 427] <... openat resumed>) = 3 [pid 428] <... mmap resumed>) = 0x7f5cd2d00000 [pid 427] write(3, "1000", 4 [pid 428] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 427] <... write resumed>) = 4 [pid 428] <... mprotect resumed>) = 0 [pid 427] close(3 [pid 428] rt_sigprocmask(SIG_BLOCK, ~[] [pid 427] <... close resumed>) = 0 [pid 428] <... rt_sigprocmask resumed>, [], 8) = 0 executing program [pid 427] write(1, "executing program\n", 18 [pid 428] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 427] <... write resumed>) = 18 [pid 427] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... restart_syscall resumed>) = 0 [pid 428] <... clone3 resumed> => {parent_tid=[429]}, 88) = 429 [pid 427] <... futex resumed>) = 0 [pid 428] rt_sigprocmask(SIG_SETMASK, [] [pid 427] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 426] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 427] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 426] <... futex resumed>) = 1 [pid 423] <... futex resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 423] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... openat resumed>) = 3 [pid 423] <... futex resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 428] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 426] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 423] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... ioctl resumed>) = 0 [pid 425] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] close(3 [pid 428] <... futex resumed>) = 0 [pid 427] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 426] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 311] <... close resumed>) = 0 [pid 428] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 427] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 426] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 427] <... mmap resumed>) = 0x7f5cd2d00000 [pid 426] <... futex resumed>) = 1 [pid 423] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 423] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 423] <... futex resumed>) = 0 [pid 427] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 426] truncate("./file1", 36262 [pid 427] <... mprotect resumed>) = 0 [pid 426] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 423] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] rt_sigprocmask(SIG_BLOCK, ~[] [pid 426] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 430 [pid 427] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 426] <... futex resumed>) = 1 [pid 423] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 427] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 426] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 423] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 426] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 423] <... futex resumed>) = 0 [pid 427] <... clone3 resumed> => {parent_tid=[431]}, 88) = 431 [pid 426] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] rt_sigprocmask(SIG_SETMASK, [] [pid 426] <... futex resumed>) = 0 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 426] read(-1 [pid 423] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 429 attached [pid 427] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 423] <... futex resumed>) = 0 [pid 429] set_robust_list(0x7f5cd2d209a0, 24 [pid 427] <... futex resumed>) = 0 [pid 426] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] <... set_robust_list resumed>) = 0 [pid 427] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 426] <... futex resumed>) = 0 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] rt_sigprocmask(SIG_SETMASK, [] [pid 426] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] exit_group(0 [pid 429] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 426] <... futex resumed>) = ? [pid 423] <... exit_group resumed>) = ? [pid 429] memfd_create("syzkaller", 0 [pid 426] +++ exited with 0 +++ [pid 423] +++ exited with 0 +++ [pid 429] <... memfd_create resumed>) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=423, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 429] <... mmap resumed>) = 0x7f5cca900000 [pid 425] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 431 attached [pid 431] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 431] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 431] memfd_create("syzkaller", 0) = 3 [pid 431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 430 attached [pid 310] <... restart_syscall resumed>) = 0 [pid 430] set_robust_list(0x55555618f760, 24) = 0 [pid 425] munmap(0x7f5cca900000, 138412032 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 430] rt_sigprocmask(SIG_SETMASK, [] [pid 310] ioctl(3, LOOP_CLR_FD [pid 430] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] close(3 [pid 425] <... munmap resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 430] <... prctl resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 430] setpgid(0, 0 [pid 425] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 430] <... setpgid resumed>) = 0 [pid 425] <... openat resumed>) = 4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 425] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 432 [pid 430] <... openat resumed>) = 3 [pid 425] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 430] write(3, "1000", 4 [pid 425] ioctl(4, LOOP_CLR_FD [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 430] <... write resumed>) = 4 [pid 425] <... ioctl resumed>) = 0 [pid 430] close(3) = 0 [pid 430] write(1, "executing program\n", 18ci2-android-6-1/strace-static-x86_64: Process 432 attached [pid 432] set_robust_list(0x55555618f760, 24 [pid 431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 432] <... set_robust_list resumed>) = 0 [pid 432] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 432] setpgid(0, 0) = 0 executing program [pid 432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 430] <... write resumed>) = 18 [pid 430] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] ioctl(4, LOOP_SET_FD, 3 [pid 430] <... futex resumed>) = 0 [pid 425] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 425] close(4 [pid 430] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 425] <... close resumed>) = 0 [pid 430] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 425] close(3 [pid 430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 432] <... openat resumed>) = 3 [pid 432] write(3, "1000", 4) = 4 [pid 432] close(3) = 0 [pid 429] <... write resumed>) = 1048576 [pid 432] write(1, "executing program\n", 18 [pid 430] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 425] <... close resumed>) = 0 [pid 430] <... mprotect resumed>) = 0 [pid 425] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] rt_sigprocmask(SIG_BLOCK, ~[] [pid 422] <... futex resumed>) = 0 [pid 425] <... futex resumed>) = 1 [pid 430] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 422] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 425] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 422] <... futex resumed>) = 0 [pid 422] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] <... clone3 resumed> => {parent_tid=[433]}, 88) = 433 [pid 425] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 430] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 425] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 425] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 430] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 422] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] truncate("./file1", 36262 [pid 422] <... futex resumed>) = 0 [pid 425] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 422] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... write resumed>) = 18 executing program [pid 432] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 432] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 432] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 432] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 432] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[434]}, 88) = 434 [pid 432] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 432] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 429] munmap(0x7f5cca900000, 138412032) = 0 [pid 429] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 429] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 429] ioctl(4, LOOP_CLR_FD) = 0 [pid 431] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 434 attached [pid 434] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 434] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 434] memfd_create("syzkaller", 0 [pid 429] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 429] close(4) = 0 [pid 429] close(3 [pid 434] <... memfd_create resumed>) = 3 [pid 425] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 422] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 422] <... futex resumed>) = 0 [pid 422] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 425] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 431] munmap(0x7f5cca900000, 138412032) = 0 [pid 431] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 429] <... close resumed>) = 0 [pid 431] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 431] ioctl(4, LOOP_CLR_FD) = 0 [pid 429] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... futex resumed>) = 0 [pid 428] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 428] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] <... futex resumed>) = 1 [pid 429] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 429] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... futex resumed>) = 0 [pid 428] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 428] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 431] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 431] close(4) = 0 [pid 431] close(3) = 0 [pid 429] <... futex resumed>) = 1 [pid 429] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 429] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... futex resumed>) = 0 [pid 428] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 428] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 1 [pid 429] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 422] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] read(-1 [pid 422] <... futex resumed>) = 0 [pid 422] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 429] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 429] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 1 [pid 428] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] read(-1 [pid 428] <... futex resumed>) = 0 [pid 429] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 428] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 428] <... futex resumed>) = 0 [pid 429] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 428] exit_group(0 [pid 429] <... futex resumed>) = ? [pid 428] <... exit_group resumed>) = ? ci2-android-6-1/strace-static-x86_64: Process 433 attached [pid 425] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] set_robust_list(0x7f5cd2d209a0, 24 [pid 429] +++ exited with 0 +++ [pid 428] +++ exited with 0 +++ [pid 425] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 433] <... set_robust_list resumed>) = 0 [pid 425] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 422] exit_group(0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=428, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 433] rt_sigprocmask(SIG_SETMASK, [] [pid 425] <... futex resumed>) = ? [pid 422] <... exit_group resumed>) = ? [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 434] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 433] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 425] +++ exited with 0 +++ [pid 422] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=422, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 431] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... futex resumed>) = 0 [pid 427] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 431] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 427] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 431] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 431] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 427] <... futex resumed>) = 0 [pid 431] truncate("./file1", 36262 [pid 427] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 427] <... futex resumed>) = 0 [pid 431] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 431] <... futex resumed>) = 0 [pid 427] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 427] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 431] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 427] <... futex resumed>) = 0 [pid 431] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 431] <... futex resumed>) = 0 [pid 427] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 431] read(-1 [pid 427] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 431] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 427] <... futex resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 431] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 431] <... futex resumed>) = 0 [pid 427] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] close(3 [pid 307] close(3 [pid 431] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] exit_group(0 [pid 309] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 433] memfd_create("syzkaller", 0 [pid 431] <... futex resumed>) = ? [pid 427] <... exit_group resumed>) = ? [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 433] <... memfd_create resumed>) = 3 [pid 431] +++ exited with 0 +++ [pid 427] +++ exited with 0 +++ [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=427, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 433] <... mmap resumed>) = 0x7f5cca900000 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 435 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 436 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 434] <... write resumed>) = 1048576 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... openat resumed>) = 3 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 437 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 434] munmap(0x7f5cca900000, 138412032) = 0 [pid 434] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 434] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 436 attached ) = -1 EBUSY (Device or resource busy) [pid 434] ioctl(4, LOOP_CLR_FD [pid 436] set_robust_list(0x55555618f760, 24 [pid 434] <... ioctl resumed>) = 0 [pid 436] <... set_robust_list resumed>) = 0 [pid 436] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 436] setpgid(0, 0) = 0 [pid 436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 433] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 435 attached [pid 436] <... openat resumed>) = 3 [pid 434] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 434] close(4) = 0 [pid 434] close(3) = 0 [pid 435] set_robust_list(0x55555618f760, 24) = 0 [pid 435] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 437 attached [pid 437] set_robust_list(0x55555618f760, 24 [pid 436] write(3, "1000", 4) = 4 [pid 437] <... set_robust_list resumed>) = 0 [pid 435] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 436] close(3 [pid 437] rt_sigprocmask(SIG_SETMASK, [] [pid 435] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 436] <... close resumed>) = 0 [pid 436] write(1, "executing program\n", 18) = 18 [pid 436] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... prctl resumed>) = 0 [pid 437] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 436] <... futex resumed>) = 0 [pid 435] setpgid(0, 0 [pid 437] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 436] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 435] <... setpgid resumed>) = 0 [pid 436] <... rt_sigaction resumed>, NULL, 8) = 0 executing program [pid 436] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 437] <... prctl resumed>) = 0 [pid 436] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 435] <... openat resumed>) = 3 [pid 437] setpgid(0, 0 [pid 436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 435] write(3, "1000", 4 [pid 437] <... setpgid resumed>) = 0 [pid 436] <... mmap resumed>) = 0x7f5cd2d00000 [pid 435] <... write resumed>) = 4 [pid 437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 436] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 435] close(3 [pid 437] <... openat resumed>) = 3 [pid 436] <... mprotect resumed>) = 0 [pid 435] <... close resumed>) = 0 [pid 437] write(3, "1000", 4 [pid 436] rt_sigprocmask(SIG_BLOCK, ~[] executing program [pid 435] write(1, "executing program\n", 18 [pid 437] <... write resumed>) = 4 [pid 436] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 435] <... write resumed>) = 18 [pid 437] close(3 [pid 433] munmap(0x7f5cca900000, 138412032 [pid 437] <... close resumed>) = 0 [pid 436] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 435] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] write(1, "executing program\n", 18 [pid 435] <... futex resumed>) = 0 [pid 433] <... munmap resumed>) = 0 executing program [pid 437] <... write resumed>) = 18 [pid 436] <... clone3 resumed> => {parent_tid=[438]}, 88) = 438 [pid 435] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 433] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 437] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] rt_sigprocmask(SIG_SETMASK, [] [pid 435] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 433] <... openat resumed>) = 4 [pid 437] <... futex resumed>) = 0 [pid 436] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 435] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 437] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 436] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 434] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 436] <... futex resumed>) = 0 [pid 435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 434] <... futex resumed>) = 1 [pid 432] <... futex resumed>) = 0 [pid 437] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 436] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 435] <... mmap resumed>) = 0x7f5cd2d00000 [pid 434] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 432] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 435] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 434] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 432] <... futex resumed>) = 0 [pid 437] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 435] <... mprotect resumed>) = 0 [pid 434] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] <... mmap resumed>) = 0x7f5cd2d00000 [pid 435] rt_sigprocmask(SIG_BLOCK, ~[] [pid 434] <... futex resumed>) = 0 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 435] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 434] truncate("./file1", 36262 [pid 432] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... mprotect resumed>) = 0 [pid 435] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 434] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 432] <... futex resumed>) = 0 [pid 437] rt_sigprocmask(SIG_BLOCK, ~[] [pid 434] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 435] <... clone3 resumed> => {parent_tid=[439]}, 88) = 439 [pid 434] <... futex resumed>) = 0 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 435] rt_sigprocmask(SIG_SETMASK, [] [pid 434] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 432] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 434] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 432] <... futex resumed>) = 0 [pid 437] <... clone3 resumed> => {parent_tid=[440]}, 88) = 440 [pid 435] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 432] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] rt_sigprocmask(SIG_SETMASK, [] [pid 435] <... futex resumed>) = 0 [pid 434] <... futex resumed>) = 0 [pid 433] ioctl(4, LOOP_CLR_FD [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 435] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 434] read(-1 [pid 433] <... ioctl resumed>) = 0 [pid 432] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 438 attached [pid 437] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 432] <... futex resumed>) = 0 [pid 438] set_robust_list(0x7f5cd2d209a0, 24 [pid 437] <... futex resumed>) = 0 [pid 434] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 434] <... futex resumed>) = 0 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 434] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] exit_group(0 [pid 434] <... futex resumed>) = ? [pid 432] <... exit_group resumed>) = ? ci2-android-6-1/strace-static-x86_64: Process 440 attached [pid 438] <... set_robust_list resumed>) = 0 [pid 434] +++ exited with 0 +++ [pid 432] +++ exited with 0 +++ [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 438] rt_sigprocmask(SIG_SETMASK, [] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 438] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 433] close(4ci2-android-6-1/strace-static-x86_64: Process 439 attached ) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 433] close(3 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 439] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 439] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 441 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 439] memfd_create("syzkaller", 0) = 3 [pid 439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 440] rt_sigprocmask(SIG_SETMASK, [] [pid 438] memfd_create("syzkaller", 0 [pid 433] <... close resumed>) = 0 [pid 440] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 438] <... memfd_create resumed>) = 3 [pid 433] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] memfd_create("syzkaller", 0 [pid 438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 440] <... memfd_create resumed>) = 3 [pid 438] <... mmap resumed>) = 0x7f5cca900000 [pid 433] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 433] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 430] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] <... openat resumed>) = -1 EISDIR (Is a directory) ci2-android-6-1/strace-static-x86_64: Process 441 attached [pid 441] set_robust_list(0x55555618f760, 24) = 0 [pid 441] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 441] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 438] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 433] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... mmap resumed>) = 0x7f5cca900000 [pid 433] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 433] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 433] truncate("./file1", 36262 [pid 430] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 441] <... prctl resumed>) = 0 [pid 441] setpgid(0, 0) = 0 [pid 441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 441] write(3, "1000", 4) = 4 [pid 441] close(3) = 0 [pid 441] write(1, "executing program\n", 18) = 18 [pid 441] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 441] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 executing program [pid 441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 441] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 441] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 441] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[442]}, 88) = 442 [pid 441] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 441] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 433] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 433] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 433] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 433] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 430] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 433] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 430] <... futex resumed>) = 0 [pid 433] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 430] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 433] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 442 attached [pid 442] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 442] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 442] memfd_create("syzkaller", 0) = 3 [pid 442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 433] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 433] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] exit_group(0 [pid 433] <... futex resumed>) = ? [pid 430] <... exit_group resumed>) = ? [pid 439] munmap(0x7f5cca900000, 138412032) = 0 [pid 439] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 433] +++ exited with 0 +++ [pid 430] +++ exited with 0 +++ [pid 439] <... openat resumed>) = 4 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=430, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 439] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 439] ioctl(4, LOOP_CLR_FD) = 0 [pid 439] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 439] close(4) = 0 [pid 439] close(3 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 440] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 439] <... close resumed>) = 0 [pid 439] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 443 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 442] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 439] <... futex resumed>) = 1 [pid 439] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 439] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 1 [pid 439] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 439] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 1 [pid 439] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 439] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] <... write resumed>) = 1048576 [pid 439] <... futex resumed>) = 1 [pid 439] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 439] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 0 [pid 435] exit_group(0) = ? [pid 439] <... futex resumed>) = ? [pid 439] +++ exited with 0 +++ [pid 435] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 438] <... write resumed>) = 1048576 [pid 309] <... restart_syscall resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 443 attached [pid 438] munmap(0x7f5cca900000, 138412032 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 443] set_robust_list(0x55555618f760, 24 [pid 438] <... munmap resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 444 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 442] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 444 attached [pid 444] set_robust_list(0x55555618f760, 24) = 0 [pid 444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 444] setpgid(0, 0) = 0 [pid 444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 444] write(3, "1000", 4) = 4 [pid 444] close(3) = 0 [pid 444] write(1, "executing program\n", 18) = 18 executing program [pid 444] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 444] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 444] rt_sigprocmask(SIG_BLOCK, ~[] [pid 442] munmap(0x7f5cca900000, 138412032) = 0 [pid 444] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[445]}, 88) = 445 [pid 444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 444] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 442] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 443] <... set_robust_list resumed>) = 0 [pid 440] munmap(0x7f5cca900000, 138412032 [pid 438] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 442] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 442] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 445 attached [pid 445] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 445] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 445] memfd_create("syzkaller", 0) = 3 [pid 445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 442] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 443] rt_sigprocmask(SIG_SETMASK, [] [pid 442] close(4 [pid 443] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 438] <... openat resumed>) = 4 [pid 442] <... close resumed>) = 0 [pid 442] close(3 [pid 443] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 440] <... munmap resumed>) = 0 [pid 438] ioctl(4, LOOP_SET_FD, 3 [pid 443] <... prctl resumed>) = 0 [pid 440] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 438] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] setpgid(0, 0 [pid 440] <... openat resumed>) = 4 [pid 438] ioctl(4, LOOP_CLR_FD [pid 443] <... setpgid resumed>) = 0 [pid 440] ioctl(4, LOOP_SET_FD, 3 [pid 438] <... ioctl resumed>) = 0 [pid 443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] <... openat resumed>) = 3 [pid 440] ioctl(4, LOOP_CLR_FD [pid 443] write(3, "1000", 4 [pid 440] <... ioctl resumed>) = 0 [pid 443] <... write resumed>) = 4 [pid 443] close(3) = 0 [pid 443] write(1, "executing program\n", 18) = 18 executing program [pid 443] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 443] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 442] <... close resumed>) = 0 [pid 443] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 440] ioctl(4, LOOP_SET_FD, 3 [pid 438] ioctl(4, LOOP_SET_FD, 3 [pid 443] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 438] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 440] close(4 [pid 438] close(4 [pid 443] <... mmap resumed>) = 0x7f5cd2d00000 [pid 440] <... close resumed>) = 0 [pid 438] <... close resumed>) = 0 [pid 443] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 440] close(3 [pid 438] close(3 [pid 443] <... mprotect resumed>) = 0 [pid 442] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] <... futex resumed>) = 1 [pid 442] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 442] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] <... futex resumed>) = 1 [pid 442] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 442] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] <... futex resumed>) = 1 [pid 442] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 438] <... close resumed>) = 0 [pid 443] rt_sigprocmask(SIG_BLOCK, ~[] [pid 442] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 442] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] <... futex resumed>) = 1 [pid 442] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 442] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] exit_group(0) = ? [pid 442] <... futex resumed>) = ? [pid 442] +++ exited with 0 +++ [pid 441] +++ exited with 0 +++ [pid 443] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 438] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=441, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 443] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 438] <... futex resumed>) = 1 [pid 436] <... futex resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 436] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 436] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 438] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 445] <... mmap resumed>) = 0x7f5cca900000 [pid 440] <... close resumed>) = 0 [pid 443] <... clone3 resumed> => {parent_tid=[446]}, 88) = 446 [pid 440] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] rt_sigprocmask(SIG_SETMASK, [] [pid 438] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 443] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 440] <... futex resumed>) = 1 [pid 438] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... futex resumed>) = 0 [pid 443] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 438] <... futex resumed>) = 1 [pid 437] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = 0 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 438] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] <... futex resumed>) = 0 [pid 436] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 440] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... futex resumed>) = 0 [pid 440] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 438] truncate("./file1", 36262 [pid 436] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 440] <... futex resumed>) = 1 [pid 438] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... futex resumed>) = 0 [pid 440] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 438] <... futex resumed>) = 1 [pid 437] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... futex resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 438] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 437] <... futex resumed>) = 0 [pid 436] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] truncate("./file1", 36262 [pid 438] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 437] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... futex resumed>) = 0 [pid 440] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 438] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 440] <... futex resumed>) = 1 [pid 438] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] <... futex resumed>) = 0 [pid 436] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... openat resumed>) = 3 [pid 440] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... futex resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 438] read(-1 [pid 437] <... futex resumed>) = 0 [pid 436] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... ioctl resumed>) = 0 [pid 440] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 438] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 437] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] close(3 [pid 440] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 438] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... close resumed>) = 0 [pid 440] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 1 [pid 436] <... futex resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 436] exit_group(0 [pid 440] <... futex resumed>) = 1 [pid 437] <... futex resumed>) = 0 [pid 436] <... exit_group resumed>) = ? [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 437] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] read(-1 [pid 437] <... futex resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 437] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 440] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 438] +++ exited with 0 +++ [pid 436] +++ exited with 0 +++ [pid 440] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 447 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=436, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 440] <... futex resumed>) = 1 [pid 437] <... futex resumed>) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 440] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] exit_group(0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 440] <... futex resumed>) = ? [pid 437] <... exit_group resumed>) = ? [pid 440] +++ exited with 0 +++ ci2-android-6-1/strace-static-x86_64: Process 447 attached [pid 447] set_robust_list(0x55555618f760, 24) = 0 [pid 447] rt_sigprocmask(SIG_SETMASK, [] [pid 437] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=437, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 447] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 447] setpgid(0, 0) = 0 [pid 447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECci2-android-6-1/strace-static-x86_64: Process 446 attached ) = 3 [pid 446] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 446] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 446] memfd_create("syzkaller", 0 [pid 447] write(3, "1000", 4) = 4 [pid 446] <... memfd_create resumed>) = 3 [pid 447] close(3) = 0 [pid 447] write(1, "executing program\n", 18 [pid 446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 447] <... write resumed>) = 18 executing program [pid 446] <... mmap resumed>) = 0x7f5cca900000 [pid 447] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 447] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 307] close(3 [pid 308] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 448 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 449 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 447] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 447] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 447] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 446] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 447] <... clone3 resumed> => {parent_tid=[450]}, 88) = 450 [pid 447] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 447] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 450 attached [pid 450] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 450] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 448 attached [pid 450] memfd_create("syzkaller", 0) = 3 [pid 450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 445] <... write resumed>) = 1048576 [pid 445] munmap(0x7f5cca900000, 138412032) = 0 [pid 445] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 445] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 445] ioctl(4, LOOP_CLR_FD) = 0 [pid 448] set_robust_list(0x55555618f760, 24ci2-android-6-1/strace-static-x86_64: Process 449 attached ) = 0 [pid 450] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 445] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 445] close(4) = 0 [pid 445] close(3) = 0 [pid 448] rt_sigprocmask(SIG_SETMASK, [] [pid 449] set_robust_list(0x55555618f760, 24 [pid 448] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 449] <... set_robust_list resumed>) = 0 [pid 448] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 449] rt_sigprocmask(SIG_SETMASK, [] [pid 448] <... prctl resumed>) = 0 [pid 449] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 448] setpgid(0, 0 [pid 449] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 448] <... setpgid resumed>) = 0 [pid 449] <... prctl resumed>) = 0 [pid 449] setpgid(0, 0 [pid 448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 449] <... setpgid resumed>) = 0 [pid 448] <... openat resumed>) = 3 [pid 449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 448] write(3, "1000", 4 [pid 449] <... openat resumed>) = 3 [pid 448] <... write resumed>) = 4 [pid 449] write(3, "1000", 4 [pid 448] close(3 [pid 449] <... write resumed>) = 4 [pid 448] <... close resumed>) = 0 [pid 449] close(3 [pid 448] write(1, "executing program\n", 18 [pid 449] <... close resumed>) = 0 [pid 448] <... write resumed>) = 18 executing program executing program [pid 449] write(1, "executing program\n", 18) = 18 [pid 448] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = 0 [pid 448] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 449] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 448] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 449] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 448] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 449] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 448] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 449] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 448] <... mmap resumed>) = 0x7f5cd2d00000 [pid 449] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 448] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 449] <... mprotect resumed>) = 0 [pid 448] <... mprotect resumed>) = 0 [pid 449] rt_sigprocmask(SIG_BLOCK, ~[] [pid 448] rt_sigprocmask(SIG_BLOCK, ~[] [pid 449] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 448] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 449] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[451]}, 88) = 451 [pid 446] <... write resumed>) = 1048576 [pid 449] <... clone3 resumed> => {parent_tid=[452]}, 88) = 452 [pid 448] rt_sigprocmask(SIG_SETMASK, [] [pid 449] rt_sigprocmask(SIG_SETMASK, [] [pid 448] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 449] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 448] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = 0 [pid 448] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 449] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 445] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 1 [pid 445] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 445] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 1 [pid 445] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 445] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 1 [pid 445] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 445] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 1 [pid 445] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 445] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 444] <... futex resumed>) = 0 [pid 445] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] exit_group(0 [pid 446] munmap(0x7f5cca900000, 138412032 [pid 445] <... futex resumed>) = ? [pid 444] <... exit_group resumed>) = ? [pid 446] <... munmap resumed>) = 0 [pid 445] +++ exited with 0 +++ [pid 444] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=444, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 450] <... write resumed>) = 1048576 [pid 446] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 446] <... openat resumed>) = 4 [pid 309] <... restart_syscall resumed>) = 0 [pid 446] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 446] ioctl(4, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 446] <... ioctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 453 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 446] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 446] close(4) = 0 [pid 446] close(3) = 0 ci2-android-6-1/strace-static-x86_64: Process 451 attached [pid 451] set_robust_list(0x7f5cd2d209a0, 24ci2-android-6-1/strace-static-x86_64: Process 452 attached [pid 452] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 452] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 452] memfd_create("syzkaller", 0) = 3 [pid 452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 452] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 446] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 443] <... futex resumed>) = 0 [pid 451] <... set_robust_list resumed>) = 0 [pid 443] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] rt_sigprocmask(SIG_SETMASK, [] [pid 443] <... futex resumed>) = 0 [pid 446] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 451] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 443] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] memfd_create("syzkaller", 0 [pid 446] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 446] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 446] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULLci2-android-6-1/strace-static-x86_64: Process 453 attached [pid 450] munmap(0x7f5cca900000, 138412032 [pid 453] set_robust_list(0x55555618f760, 24 [pid 450] <... munmap resumed>) = 0 [pid 453] <... set_robust_list resumed>) = 0 [pid 453] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 453] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 450] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 453] <... prctl resumed>) = 0 [pid 450] <... openat resumed>) = 4 [pid 453] setpgid(0, 0) = 0 [pid 453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 450] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 450] ioctl(4, LOOP_CLR_FD) = 0 [pid 453] <... openat resumed>) = 3 [pid 453] write(3, "1000", 4) = 4 [pid 453] close(3) = 0 [pid 453] write(1, "executing program\n", 18) = 18 executing program [pid 453] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 453] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 453] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 453] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 453] rt_sigprocmask(SIG_BLOCK, ~[] [pid 450] ioctl(4, LOOP_SET_FD, 3 [pid 453] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 450] close(4) = 0 [pid 453] <... clone3 resumed> => {parent_tid=[454]}, 88) = 454 [pid 450] close(3 [pid 453] rt_sigprocmask(SIG_SETMASK, [] [pid 451] <... memfd_create resumed>) = 3 [pid 450] <... close resumed>) = 0 [pid 443] <... futex resumed>) = 0 [pid 443] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 443] <... futex resumed>) = 1 [pid 443] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... mmap resumed>) = 0x7f5cca900000 [pid 453] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 446] <... futex resumed>) = 0 [pid 453] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] truncate("./file1", 36262 [pid 453] <... futex resumed>) = 0 [pid 446] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 453] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 446] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 443] <... futex resumed>) = 0 [pid 446] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 443] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 443] <... futex resumed>) = 0 [pid 446] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 443] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 446] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 443] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 443] <... futex resumed>) = 0 [pid 446] read(-1 [pid 443] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 450] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 450] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 446] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 447] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... futex resumed>) = 1 [pid 443] <... futex resumed>) = 0 [pid 450] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 447] <... futex resumed>) = 0 [pid 446] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 443] exit_group(0 [pid 450] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] <... futex resumed>) = ? [pid 443] <... exit_group resumed>) = ? [pid 450] <... futex resumed>) = 0 [pid 447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] +++ exited with 0 +++ [pid 450] truncate("./file1", 36262 [pid 447] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 447] <... futex resumed>) = 0 [pid 450] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 450] <... futex resumed>) = 0 [pid 447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 443] +++ exited with 0 +++ [pid 450] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 447] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 447] <... futex resumed>) = 0 [pid 450] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=443, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ci2-android-6-1/strace-static-x86_64: Process 454 attached [pid 450] <... futex resumed>) = 0 [pid 447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 454] set_robust_list(0x7f5cd2d209a0, 24 [pid 450] read(-1 [pid 447] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... set_robust_list resumed>) = 0 [pid 450] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 447] <... futex resumed>) = 0 [pid 454] rt_sigprocmask(SIG_SETMASK, [] [pid 450] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 450] <... futex resumed>) = 0 [pid 447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 454] memfd_create("syzkaller", 0 [pid 450] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] exit_group(0 [pid 454] <... memfd_create resumed>) = 3 [pid 450] <... futex resumed>) = ? [pid 447] <... exit_group resumed>) = ? [pid 454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 450] +++ exited with 0 +++ [pid 447] +++ exited with 0 +++ [pid 454] <... mmap resumed>) = 0x7f5cca900000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 454] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] <... restart_syscall resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 452] <... write resumed>) = 1048576 [pid 310] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 311] <... ioctl resumed>) = 0 [pid 311] close(3 [pid 310] <... openat resumed>) = 3 [pid 311] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... ioctl resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] close(3 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 452] munmap(0x7f5cca900000, 138412032 [pid 310] <... close resumed>) = 0 [pid 452] <... munmap resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 452] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 455 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 452] <... openat resumed>) = 4 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 452] ioctl(4, LOOP_SET_FD, 3 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 452] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 452] ioctl(4, LOOP_CLR_FD) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 456 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 452] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 452] close(4) = 0 [pid 452] close(3) = 0 ci2-android-6-1/strace-static-x86_64: Process 455 attached [pid 455] set_robust_list(0x55555618f760, 24) = 0 [pid 455] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 455] setpgid(0, 0) = 0 [pid 455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 451] <... write resumed>) = 1048576 [pid 452] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 449] <... futex resumed>) = 0 [pid 449] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 455] <... openat resumed>) = 3 [pid 449] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 452] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... futex resumed>) = 0 [pid 449] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 449] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] <... futex resumed>) = 1 [pid 455] write(3, "1000", 4 [pid 452] truncate("./file1", 36262 [pid 455] <... write resumed>) = 4 [pid 452] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 455] close(3) = 0 [pid 452] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... futex resumed>) = 0 [pid 449] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 449] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] <... futex resumed>) = 1 [pid 455] write(1, "executing program\n", 18 [pid 452] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 455] <... write resumed>) = 18 [pid 452] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 455] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 452] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] <... futex resumed>) = 0 [pid 452] <... futex resumed>) = 1 [pid 449] <... futex resumed>) = 0 [pid 455] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 452] read(-1 [pid 449] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 452] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 449] <... futex resumed>) = 0 [pid 455] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 452] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 455] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 452] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 452] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] exit_group(0 [pid 455] <... mmap resumed>) = 0x7f5cd2d00000 [pid 452] <... futex resumed>) = ? [pid 449] <... exit_group resumed>) = ? [pid 455] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 452] +++ exited with 0 +++ [pid 449] +++ exited with 0 +++ [pid 455] <... mprotect resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=449, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 455] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 455] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 455] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[457]}, 88) = 457 [pid 455] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 455] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 455] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 454] <... write resumed>) = 1048576 [pid 454] munmap(0x7f5cca900000, 138412032) = 0 [pid 454] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 454] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 454] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 457 attached [pid 457] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 457] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 457] memfd_create("syzkaller", 0) = 3 [pid 457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 454] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 454] close(4) = 0 [pid 454] close(3) = 0 [pid 457] <... mmap resumed>) = 0x7f5cca900000 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[]ci2-android-6-1/strace-static-x86_64: Process 456 attached , [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 456] set_robust_list(0x55555618f760, 24) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 458 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 456] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 456] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 454] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... futex resumed>) = 1 [pid 454] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 454] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... futex resumed>) = 1 [pid 454] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 454] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... futex resumed>) = 1 [pid 454] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 454] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 454] <... futex resumed>) = 1 [pid 454] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 454] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] exit_group(0) = ? [pid 454] <... futex resumed>) = ? [pid 454] +++ exited with 0 +++ [pid 453] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=453, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 458 attached [pid 458] set_robust_list(0x55555618f760, 24) = 0 [pid 458] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 458] setpgid(0, 0) = 0 [pid 458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 456] <... prctl resumed>) = 0 [pid 451] munmap(0x7f5cca900000, 138412032 [pid 456] setpgid(0, 0) = 0 [pid 451] <... munmap resumed>) = 0 [pid 456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 451] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 456] <... openat resumed>) = 3 [pid 451] <... openat resumed>) = 4 [pid 456] write(3, "1000", 4 [pid 451] ioctl(4, LOOP_SET_FD, 3 [pid 456] <... write resumed>) = 4 [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 456] close(3 [pid 451] ioctl(4, LOOP_CLR_FD [pid 456] <... close resumed>) = 0 [pid 451] <... ioctl resumed>) = 0 [pid 456] write(1, "executing program\n", 18) = 18 executing program [pid 458] <... openat resumed>) = 3 [pid 458] write(3, "1000", 4 [pid 456] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 456] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 456] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 451] ioctl(4, LOOP_SET_FD, 3 [pid 456] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 458] <... write resumed>) = 4 [pid 456] <... mprotect resumed>) = 0 [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 458] close(3 [pid 456] rt_sigprocmask(SIG_BLOCK, ~[] [pid 451] close(4 [pid 456] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 458] <... close resumed>) = 0 [pid 456] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 451] <... close resumed>) = 0 [pid 458] write(1, "executing program\n", 18 [pid 309] <... restart_syscall resumed>) = 0 executing program [pid 451] close(3 [pid 458] <... write resumed>) = 18 [pid 456] <... clone3 resumed> => {parent_tid=[459]}, 88) = 459 [pid 458] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 456] rt_sigprocmask(SIG_SETMASK, [] [pid 458] <... futex resumed>) = 0 [pid 456] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 458] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 456] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... openat resumed>) = 3 [pid 458] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 457] <... write resumed>) = 1048576 [pid 456] <... futex resumed>) = 0 [pid 451] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 458] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 456] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 451] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... ioctl resumed>) = 0 [pid 458] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] close(3 [pid 458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 309] <... close resumed>) = 0 [pid 458] <... mmap resumed>) = 0x7f5cd2d00000 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 458] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 458] <... mprotect resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 458] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 460 [pid 458] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 458] <... clone3 resumed> => {parent_tid=[461]}, 88) = 461 [pid 458] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 458] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 458] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 459 attached [pid 459] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 459] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 459] memfd_create("syzkaller", 0) = 3 [pid 459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 451] <... futex resumed>) = 1 [pid 448] <... futex resumed>) = 0 [pid 448] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 448] <... futex resumed>) = 0 [pid 451] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 448] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] <... futex resumed>) = 0 [pid 448] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] truncate("./file1", 36262 [pid 448] <... futex resumed>) = 0 [pid 451] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 448] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] <... futex resumed>) = 0 [pid 448] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 448] <... futex resumed>) = 0 [pid 451] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 448] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] <... futex resumed>) = 0 [pid 448] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] read(-1 [pid 448] <... futex resumed>) = 0 [pid 451] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 448] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 460 attached [pid 451] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] exit_group(0ci2-android-6-1/strace-static-x86_64: Process 461 attached [pid 460] set_robust_list(0x55555618f760, 24 [pid 451] <... futex resumed>) = ? [pid 448] <... exit_group resumed>) = ? [pid 461] set_robust_list(0x7f5cd2d209a0, 24 [pid 460] <... set_robust_list resumed>) = 0 [pid 461] <... set_robust_list resumed>) = 0 [pid 460] rt_sigprocmask(SIG_SETMASK, [] [pid 461] rt_sigprocmask(SIG_SETMASK, [] [pid 460] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 451] +++ exited with 0 +++ [pid 448] +++ exited with 0 +++ [pid 461] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 460] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 461] memfd_create("syzkaller", 0 [pid 460] <... prctl resumed>) = 0 [pid 457] munmap(0x7f5cca900000, 138412032 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=448, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 461] <... memfd_create resumed>) = 3 [pid 460] setpgid(0, 0 [pid 457] <... munmap resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 460] <... setpgid resumed>) = 0 [pid 457] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 461] <... mmap resumed>) = 0x7f5cca900000 [pid 460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 457] <... openat resumed>) = 4 [pid 460] <... openat resumed>) = 3 [pid 457] ioctl(4, LOOP_SET_FD, 3 [pid 460] write(3, "1000", 4 [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 460] <... write resumed>) = 4 [pid 457] ioctl(4, LOOP_CLR_FD [pid 460] close(3 [pid 457] <... ioctl resumed>) = 0 [pid 460] <... close resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 executing program [pid 460] write(1, "executing program\n", 18) = 18 [pid 459] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 457] ioctl(4, LOOP_SET_FD, 3 [pid 460] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 460] <... futex resumed>) = 0 [pid 457] close(4 [pid 308] <... openat resumed>) = 3 [pid 461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 460] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 457] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 460] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 457] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 460] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 457] <... close resumed>) = 0 [pid 308] close(3 [pid 460] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... close resumed>) = 0 [pid 460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 460] <... mmap resumed>) = 0x7f5cd2d00000 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 460] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 460] <... mprotect resumed>) = 0 [pid 460] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 462 [pid 460] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 460] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 457] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 457] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 460] <... clone3 resumed> => {parent_tid=[463]}, 88) = 463 [pid 457] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 455] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] rt_sigprocmask(SIG_SETMASK, [] [pid 457] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 455] <... futex resumed>) = 0 [pid 460] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 457] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 461] <... write resumed>) = 1048576 [pid 460] <... futex resumed>) = 0 [pid 457] truncate("./file1", 36262 [pid 455] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 457] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 455] <... futex resumed>) = 0 [pid 457] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 457] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 455] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 455] <... futex resumed>) = 0 [pid 457] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 457] read(-1 [pid 455] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 455] <... futex resumed>) = 0 [pid 457] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 457] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] exit_group(0 [pid 457] <... futex resumed>) = ? [pid 455] <... exit_group resumed>) = ? [pid 457] +++ exited with 0 +++ [pid 455] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=455, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 462 attached [pid 462] set_robust_list(0x55555618f760, 24) = 0 [pid 462] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 462] setpgid(0, 0) = 0 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 462] write(3, "1000", 4) = 4 [pid 462] close(3) = 0 [pid 462] write(1, "executing program\n", 18) = 18 [pid 462] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 462] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 462] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 462] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[464]}, 88) = 464 [pid 462] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 462] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 461] munmap(0x7f5cca900000, 138412032) = 0 [pid 461] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 461] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 461] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 464 attached [pid 464] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 464] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 464] memfd_create("syzkaller", 0) = 3 [pid 464] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 461] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 461] close(4) = 0 [pid 461] close(3) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 461] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 458] <... futex resumed>) = 0 [pid 458] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 458] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... futex resumed>) = 1 [pid 461] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 461] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... futex resumed>) = 0 [pid 458] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 458] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... futex resumed>) = 1 [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3 [pid 461] truncate("./file1", 36262 [pid 311] <... close resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 461] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 461] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... futex resumed>) = 0 [pid 458] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 458] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 465 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 461] <... futex resumed>) = 1 [pid 461] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... futex resumed>) = 0 [pid 458] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 458] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... futex resumed>) = 1 [pid 461] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... futex resumed>) = 0 [pid 458] exit_group(0) = ? [pid 461] <... futex resumed>) = ? [pid 461] +++ exited with 0 +++ [pid 459] <... write resumed>) = 1048576 [pid 458] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=458, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 463 attached [pid 459] munmap(0x7f5cca900000, 138412032 [pid 463] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 459] <... munmap resumed>) = 0 [pid 463] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 459] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 463] memfd_create("syzkaller", 0 [pid 459] <... openat resumed>) = 4 [pid 463] <... memfd_create resumed>) = 3 [pid 459] ioctl(4, LOOP_SET_FD, 3 [pid 463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 459] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ci2-android-6-1/strace-static-x86_64: Process 465 attached [pid 465] set_robust_list(0x55555618f760, 24) = 0 [pid 465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 465] setpgid(0, 0) = 0 [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 465] write(3, "1000", 4 [pid 459] ioctl(4, LOOP_CLR_FD [pid 465] <... write resumed>) = 4 [pid 465] close(3) = 0 [pid 465] write(1, "executing program\n", 18) = 18 executing program [pid 465] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 465] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 459] <... ioctl resumed>) = 0 [pid 465] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 464] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 465] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 459] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 459] close(4 [pid 465] rt_sigprocmask(SIG_BLOCK, ~[] [pid 459] <... close resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 466 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 465] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[467]}, 88) = 467 [pid 465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 465] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 459] close(3) = 0 ci2-android-6-1/strace-static-x86_64: Process 466 attached [pid 466] set_robust_list(0x55555618f760, 24) = 0 [pid 466] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 466] setpgid(0, 0) = 0 [pid 466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 466] write(3, "1000", 4) = 4 [pid 464] <... write resumed>) = 1048576 [pid 466] close(3) = 0 [pid 466] write(1, "executing program\n", 18) = 18 executing program [pid 466] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 466] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 466] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 459] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] <... futex resumed>) = 0 [pid 456] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 456] <... futex resumed>) = 0 [pid 456] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 466] <... mmap resumed>) = 0x7f5cd2d00000 [pid 466] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 466] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 466] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[468]}, 88) = 468 [pid 466] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 466] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 466] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 467 attached [pid 467] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 467] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 467] memfd_create("syzkaller", 0) = 3 [pid 464] munmap(0x7f5cca900000, 138412032) = 0 [pid 467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 463] <... write resumed>) = 1048576 [pid 459] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] <... futex resumed>) = 0 [pid 459] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] truncate("./file1", 36262 [pid 456] <... futex resumed>) = 0 [pid 456] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 459] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] <... futex resumed>) = 0 [pid 459] <... futex resumed>) = 1 [pid 459] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 456] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 456] <... futex resumed>) = 0 [pid 459] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] <... futex resumed>) = 0 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] <... futex resumed>) = 0 [pid 459] read(-1 [pid 464] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 459] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 456] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] exit_group(0 [pid 464] <... openat resumed>) = 4 [pid 459] <... futex resumed>) = ? [pid 456] <... exit_group resumed>) = ? [pid 464] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 464] ioctl(4, LOOP_CLR_FD) = 0 [pid 467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 459] +++ exited with 0 +++ [pid 456] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=456, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 464] ioctl(4, LOOP_SET_FD, 3 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 464] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] munmap(0x7f5cca900000, 138412032 [pid 464] close(4) = 0 [pid 464] close(3) = 0 [pid 310] <... restart_syscall resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 468 attached [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 468] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 468] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 469 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 468] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 468] memfd_create("syzkaller", 0) = 3 [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 464] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... futex resumed>) = 1 [pid 464] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 464] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... futex resumed>) = 1 [pid 464] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 464] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 462] <... futex resumed>) = 0 [pid 464] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 462] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... futex resumed>) = 0 [pid 464] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 464] read(-1 [pid 462] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 462] <... futex resumed>) = 0 [pid 468] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 464] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 464] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] exit_group(0 [pid 464] <... futex resumed>) = ? [pid 463] <... munmap resumed>) = 0 [pid 462] <... exit_group resumed>) = ? [pid 464] +++ exited with 0 +++ [pid 462] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=462, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 463] openat(AT_FDCWD, "/dev/loop2", O_RDWRci2-android-6-1/strace-static-x86_64: Process 469 attached ) = 4 [pid 469] set_robust_list(0x55555618f760, 24 [pid 463] ioctl(4, LOOP_SET_FD, 3 [pid 469] <... set_robust_list resumed>) = 0 [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 469] rt_sigprocmask(SIG_SETMASK, [] [pid 463] ioctl(4, LOOP_CLR_FD [pid 469] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 463] <... ioctl resumed>) = 0 [pid 469] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... restart_syscall resumed>) = 0 [pid 469] <... prctl resumed>) = 0 [pid 469] setpgid(0, 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 469] <... setpgid resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 463] ioctl(4, LOOP_SET_FD, 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 469] <... openat resumed>) = 3 [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... ioctl resumed>) = 0 [pid 469] write(3, "1000", 4 [pid 463] close(4 [pid 308] close(3 [pid 463] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 470 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 467] <... write resumed>) = 1048576 [pid 467] munmap(0x7f5cca900000, 138412032) = 0 [pid 467] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 467] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 467] ioctl(4, LOOP_CLR_FD) = 0 [pid 463] close(3 [pid 469] <... write resumed>) = 4 [pid 468] <... write resumed>) = 1048576 [pid 467] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 467] close(4) = 0 [pid 467] close(3 [pid 469] close(3 [pid 463] <... close resumed>) = 0 [pid 463] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... close resumed>) = 0 [pid 469] write(1, "executing program\n", 18 [pid 463] <... futex resumed>) = 1 [pid 460] <... futex resumed>) = 0 [pid 460] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 460] <... futex resumed>) = 0 [pid 469] <... write resumed>) = 18 executing program [pid 460] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 470 attached [pid 470] set_robust_list(0x55555618f760, 24) = 0 [pid 470] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 463] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 469] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... futex resumed>) = 0 [pid 469] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 463] <... futex resumed>) = 1 [pid 460] <... futex resumed>) = 0 [pid 469] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 463] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] <... futex resumed>) = 0 [pid 469] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 463] truncate("./file1", 36262 [pid 460] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 463] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 469] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 463] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... mprotect resumed>) = 0 [pid 463] <... futex resumed>) = 1 [pid 460] <... futex resumed>) = 0 [pid 460] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] rt_sigprocmask(SIG_BLOCK, ~[] [pid 463] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 460] <... futex resumed>) = 0 [pid 469] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 463] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 460] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 463] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 463] <... futex resumed>) = 0 [pid 460] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... clone3 resumed> => {parent_tid=[471]}, 88) = 471 [pid 463] read(-1 [pid 460] <... futex resumed>) = 0 [pid 469] rt_sigprocmask(SIG_SETMASK, [] [pid 463] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 460] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 469] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... futex resumed>) = 0 [pid 463] <... futex resumed>) = 1 [pid 460] <... futex resumed>) = 0 [pid 469] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 463] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] exit_group(0 [pid 463] <... futex resumed>) = ? [pid 460] <... exit_group resumed>) = ? [pid 470] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 467] <... close resumed>) = 0 [pid 463] +++ exited with 0 +++ [pid 460] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=460, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 470] <... prctl resumed>) = 0 [pid 470] setpgid(0, 0) = 0 [pid 470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 470] write(3, "1000", 4) = 4 [pid 470] close(3) = 0 [pid 468] munmap(0x7f5cca900000, 138412032) = 0 [pid 470] write(1, "executing program\n", 18) = 18 [pid 470] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 470] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 467] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 468] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 467] <... futex resumed>) = 1 [pid 465] <... futex resumed>) = 0 [pid 470] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 468] <... openat resumed>) = 4 [pid 467] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 465] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 467] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 465] <... futex resumed>) = 0 [pid 470] <... mmap resumed>) = 0x7f5cd2d00000 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 468] ioctl(4, LOOP_CLR_FD [pid 467] <... futex resumed>) = 0 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 470] <... mprotect resumed>) = 0 [pid 468] <... ioctl resumed>) = 0 [pid 467] truncate("./file1", 36262 [pid 465] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] rt_sigprocmask(SIG_BLOCK, ~[] [pid 467] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 465] <... futex resumed>) = 0 [pid 470] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 467] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 467] <... futex resumed>) = 0 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 465] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... clone3 resumed> => {parent_tid=[472]}, 88) = 472 [pid 467] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... futex resumed>) = 0 [pid 470] rt_sigprocmask(SIG_SETMASK, [] [pid 467] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... restart_syscall resumed>) = 0 [pid 470] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 467] <... futex resumed>) = 0 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 470] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] read(-1 [pid 465] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 468] close(4 [pid 467] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 465] <... futex resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 470] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 468] <... close resumed>) = 0 [pid 467] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... openat resumed>) = 3 [pid 468] close(3 [pid 467] <... futex resumed>) = 0 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] ioctl(3, LOOP_CLR_FD [pid 468] <... close resumed>) = 0 [pid 467] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] exit_group(0 [pid 309] <... ioctl resumed>) = 0 [pid 468] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... futex resumed>) = ? [pid 465] <... exit_group resumed>) = ? [pid 309] close(3 [pid 468] <... futex resumed>) = 1 [pid 467] +++ exited with 0 +++ [pid 466] <... futex resumed>) = 0 [pid 465] +++ exited with 0 +++ [pid 309] <... close resumed>) = 0 [pid 468] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 466] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 468] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 466] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 468] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 468] <... futex resumed>) = 0 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=465, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 468] truncate("./file1", 36262 [pid 466] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 473 [pid 468] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 466] <... futex resumed>) = 0 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 468] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 468] <... futex resumed>) = 0 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 466] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... futex resumed>) = 0 [pid 468] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 468] <... futex resumed>) = 0 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] read(-1 [pid 466] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 466] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 472 attached [pid 468] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 472] set_robust_list(0x7f5cd2d209a0, 24 [pid 468] <... futex resumed>) = 0 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] <... set_robust_list resumed>) = 0 [pid 468] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 466] exit_group(0 [pid 472] rt_sigprocmask(SIG_SETMASK, [] [pid 468] <... futex resumed>) = ? [pid 466] <... exit_group resumed>) = ? [pid 472] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 468] +++ exited with 0 +++ [pid 466] +++ exited with 0 +++ [pid 472] memfd_create("syzkaller", 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=466, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 472] <... memfd_create resumed>) = 3 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 473 attached [pid 473] set_robust_list(0x55555618f760, 24) = 0 [pid 473] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 473] setpgid(0, 0) = 0 [pid 473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ci2-android-6-1/strace-static-x86_64: Process 471 attached [pid 307] <... restart_syscall resumed>) = 0 [pid 471] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 471] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 474 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 473] write(3, "1000", 4) = 4 [pid 473] close(3) = 0 [pid 473] write(1, "executing program\n", 18) = 18 executing program [pid 473] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 473] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 473] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 473] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 473] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 473] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 473] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[475]}, 88) = 475 [pid 473] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 473] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 473] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 472] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 471] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 471] memfd_create("syzkaller", 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 471] <... memfd_create resumed>) = 3 [pid 311] <... openat resumed>) = 3 [pid 471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 471] <... mmap resumed>) = 0x7f5cca900000 [pid 311] <... ioctl resumed>) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 474 attached [pid 474] set_robust_list(0x55555618f760, 24) = 0 [pid 474] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 476 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 474] setpgid(0, 0) = 0 [pid 474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 474] write(3, "1000", 4) = 4 [pid 474] close(3) = 0 [pid 474] write(1, "executing program\n", 18) = 18 executing program [pid 474] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 474] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 474] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[477]}, 88) = 477 [pid 474] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 474] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 475 attached [pid 475] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 475] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 475] memfd_create("syzkaller", 0) = 3 [pid 475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 477 attached ci2-android-6-1/strace-static-x86_64: Process 476 attached [pid 472] <... write resumed>) = 1048576 [pid 471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 471] <... write resumed>) = 1048576 [pid 476] set_robust_list(0x55555618f760, 24 [pid 471] munmap(0x7f5cca900000, 138412032 [pid 477] set_robust_list(0x7f5cd2d209a0, 24 [pid 476] <... set_robust_list resumed>) = 0 [pid 472] munmap(0x7f5cca900000, 138412032 [pid 471] <... munmap resumed>) = 0 [pid 477] <... set_robust_list resumed>) = 0 [pid 476] rt_sigprocmask(SIG_SETMASK, [] [pid 471] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 477] rt_sigprocmask(SIG_SETMASK, [] [pid 476] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 472] <... munmap resumed>) = 0 [pid 477] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 476] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 472] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 471] <... openat resumed>) = 4 [pid 476] <... prctl resumed>) = 0 [pid 477] memfd_create("syzkaller", 0 [pid 476] setpgid(0, 0 [pid 471] ioctl(4, LOOP_SET_FD, 3 [pid 472] <... openat resumed>) = 4 [pid 477] <... memfd_create resumed>) = 3 [pid 476] <... setpgid resumed>) = 0 [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 472] ioctl(4, LOOP_SET_FD, 3 [pid 471] ioctl(4, LOOP_CLR_FD [pid 476] <... openat resumed>) = 3 [pid 471] <... ioctl resumed>) = 0 [pid 477] <... mmap resumed>) = 0x7f5cca900000 [pid 476] write(3, "1000", 4 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 476] <... write resumed>) = 4 [pid 476] close(3 [pid 472] ioctl(4, LOOP_CLR_FD [pid 475] <... write resumed>) = 1048576 [pid 476] <... close resumed>) = 0 [pid 472] <... ioctl resumed>) = 0 executing program [pid 476] write(1, "executing program\n", 18) = 18 [pid 476] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] ioctl(4, LOOP_SET_FD, 3 [pid 476] <... futex resumed>) = 0 [pid 476] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 476] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 471] close(4 [pid 476] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 475] munmap(0x7f5cca900000, 138412032) = 0 [pid 475] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 475] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 475] ioctl(4, LOOP_CLR_FD) = 0 [pid 476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 471] <... close resumed>) = 0 [pid 476] <... mmap resumed>) = 0x7f5cd2d00000 [pid 471] close(3 [pid 476] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 476] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 476] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 475] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 475] close(4) = 0 [pid 475] close(3 [pid 476] <... clone3 resumed> => {parent_tid=[478]}, 88) = 478 [pid 472] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 478 attached [pid 476] rt_sigprocmask(SIG_SETMASK, [] [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] <... close resumed>) = 0 [pid 476] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 472] close(4 [pid 471] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] set_robust_list(0x7f5cd2d209a0, 24 [pid 476] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... set_robust_list resumed>) = 0 [pid 476] <... futex resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 471] <... futex resumed>) = 1 [pid 469] <... futex resumed>) = 0 [pid 478] rt_sigprocmask(SIG_SETMASK, [] [pid 476] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 472] close(3 [pid 471] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 472] <... close resumed>) = 0 [pid 469] <... futex resumed>) = 0 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 469] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] memfd_create("syzkaller", 0 [pid 472] <... futex resumed>) = 1 [pid 470] <... futex resumed>) = 0 [pid 478] <... memfd_create resumed>) = 3 [pid 472] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 470] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 478] <... mmap resumed>) = 0x7f5cca900000 [pid 472] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 471] <... futex resumed>) = 1 [pid 470] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 472] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 471] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 472] <... futex resumed>) = 1 [pid 471] truncate("./file1", 36262 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 472] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 470] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 472] truncate("./file1", 36262 [pid 471] <... futex resumed>) = 1 [pid 470] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 472] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 471] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 472] <... futex resumed>) = 1 [pid 471] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] <... close resumed>) = 0 [pid 472] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 470] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 475] <... futex resumed>) = 1 [pid 473] <... futex resumed>) = 0 [pid 472] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 471] <... futex resumed>) = 1 [pid 470] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 475] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 473] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 471] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 473] <... futex resumed>) = 0 [pid 472] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 475] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 472] <... futex resumed>) = 1 [pid 471] read(-1 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] <... futex resumed>) = 0 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 470] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] truncate("./file1", 36262 [pid 473] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 478] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 477] <... write resumed>) = 1048576 [pid 475] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 473] <... futex resumed>) = 0 [pid 472] read(-1 [pid 471] <... futex resumed>) = 1 [pid 470] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 473] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 477] munmap(0x7f5cca900000, 138412032) = 0 [pid 477] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 477] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 477] ioctl(4, LOOP_CLR_FD) = 0 [pid 475] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] <... futex resumed>) = 0 [pid 475] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 473] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 473] <... futex resumed>) = 0 [pid 475] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 473] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 475] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] ioctl(4, LOOP_SET_FD, 3 [pid 475] <... futex resumed>) = 1 [pid 473] <... futex resumed>) = 0 [pid 478] <... write resumed>) = 1048576 [pid 477] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 475] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 473] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 471] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] exit_group(0 [pid 478] munmap(0x7f5cca900000, 138412032 [pid 477] close(4 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 473] <... futex resumed>) = 0 [pid 472] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = ? [pid 469] <... exit_group resumed>) = ? [pid 478] <... munmap resumed>) = 0 [pid 477] <... close resumed>) = 0 [pid 475] read(-1 [pid 473] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 472] <... futex resumed>) = 1 [pid 471] +++ exited with 0 +++ [pid 470] <... futex resumed>) = 0 [pid 478] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 477] close(3 [pid 475] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 472] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 470] exit_group(0 [pid 469] +++ exited with 0 +++ [pid 478] <... openat resumed>) = 4 [pid 477] <... close resumed>) = 0 [pid 475] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = ? [pid 470] <... exit_group resumed>) = ? [pid 478] ioctl(4, LOOP_SET_FD, 3 [pid 477] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... futex resumed>) = 1 [pid 473] <... futex resumed>) = 0 [pid 472] +++ exited with 0 +++ [pid 470] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=469, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 478] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] <... futex resumed>) = 1 [pid 475] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] <... futex resumed>) = 0 [pid 473] exit_group(0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=470, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 478] ioctl(4, LOOP_CLR_FD [pid 477] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] <... futex resumed>) = ? [pid 474] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... exit_group resumed>) = ? [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 478] <... ioctl resumed>) = 0 [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] +++ exited with 0 +++ [pid 474] <... futex resumed>) = 0 [pid 473] +++ exited with 0 +++ [pid 310] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 477] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 474] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=473, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 477] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 477] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 477] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 477] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 478] ioctl(4, LOOP_SET_FD, 3 [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 478] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] truncate("./file1", 36262 [pid 474] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 478] close(4 [pid 477] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 310] <... close resumed>) = 0 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 478] <... close resumed>) = 0 [pid 477] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 478] close(3 [pid 477] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 477] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 477] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 474] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 479 [pid 477] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 480 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 478] <... close resumed>) = 0 [pid 477] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 478] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 478] <... futex resumed>) = 1 [pid 477] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] <... futex resumed>) = 0 [pid 474] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... futex resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 481 [pid 478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 477] read(-1 [pid 476] <... futex resumed>) = 0 [pid 474] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 477] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 476] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 478] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 477] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 478] <... futex resumed>) = 1 [pid 477] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] <... futex resumed>) = 0 [pid 474] exit_group(0 [pid 478] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] <... futex resumed>) = ? [pid 476] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... exit_group resumed>) = ? [pid 478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 477] +++ exited with 0 +++ [pid 476] <... futex resumed>) = 0 [pid 474] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=474, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 481 attached [pid 481] set_robust_list(0x55555618f760, 24) = 0 [pid 481] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 481] setpgid(0, 0) = 0 [pid 481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 481] write(3, "1000", 4) = 4 [pid 481] close(3) = 0 [pid 481] write(1, "executing program\n", 18ci2-android-6-1/strace-static-x86_64: Process 479 attached ) = 18 executing program [pid 481] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] set_robust_list(0x55555618f760, 24 [pid 481] <... futex resumed>) = 0 [pid 478] truncate("./file1", 36262 [pid 476] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 481] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 479] <... set_robust_list resumed>) = 0 [pid 478] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 476] <... futex resumed>) = 0 [pid 478] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] <... futex resumed>) = 0 [pid 478] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 476] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 479] rt_sigprocmask(SIG_SETMASK, [] [pid 478] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 478] <... futex resumed>) = 1 [pid 476] <... futex resumed>) = 0 [pid 478] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] <... futex resumed>) = 0 [pid 478] read(-1 [pid 476] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 479] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 478] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 479] <... prctl resumed>) = 0 [pid 478] <... futex resumed>) = 1 [pid 476] <... futex resumed>) = 0 [pid 478] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 479] setpgid(0, 0 [pid 476] exit_group(0 [pid 481] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 479] <... setpgid resumed>) = 0 [pid 478] <... futex resumed>) = ? [pid 476] <... exit_group resumed>) = ? [pid 481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 478] +++ exited with 0 +++ [pid 481] <... mmap resumed>) = 0x7f5cd2d00000 [pid 479] <... openat resumed>) = 3 [pid 481] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 479] write(3, "1000", 4 [pid 476] +++ exited with 0 +++ [pid 481] <... mprotect resumed>) = 0 [pid 479] <... write resumed>) = 4 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=476, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 481] rt_sigprocmask(SIG_BLOCK, ~[] [pid 479] close(3 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 481] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 479] <... close resumed>) = 0 [pid 481] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} executing program [pid 479] write(1, "executing program\n", 18) = 18 [pid 481] <... clone3 resumed> => {parent_tid=[482]}, 88) = 482 [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] rt_sigprocmask(SIG_SETMASK, [] [pid 479] <... futex resumed>) = 0 [pid 481] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 479] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 481] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 481] <... futex resumed>) = 0 [pid 479] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 481] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 479] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 479] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 ci2-android-6-1/strace-static-x86_64: Process 482 attached ci2-android-6-1/strace-static-x86_64: Process 480 attached [pid 482] set_robust_list(0x7f5cd2d209a0, 24 [pid 480] set_robust_list(0x55555618f760, 24 [pid 479] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 482] <... set_robust_list resumed>) = 0 [pid 480] <... set_robust_list resumed>) = 0 [pid 482] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 480] rt_sigprocmask(SIG_SETMASK, [] [pid 479] <... mprotect resumed>) = 0 [pid 482] memfd_create("syzkaller", 0 [pid 480] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 479] rt_sigprocmask(SIG_BLOCK, ~[] [pid 482] <... memfd_create resumed>) = 3 [pid 480] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 479] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 479] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 307] <... restart_syscall resumed>) = 0 [pid 479] <... clone3 resumed> => {parent_tid=[483]}, 88) = 483 [pid 479] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 479] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... openat resumed>) = 3 [pid 479] <... futex resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 484 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 483 attached [pid 483] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 483] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 483] memfd_create("syzkaller", 0) = 3 [pid 311] <... restart_syscall resumed>) = 0 [pid 482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 480] <... prctl resumed>) = 0 [pid 480] setpgid(0, 0 [pid 482] <... mmap resumed>) = 0x7f5cca900000 [pid 483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 480] <... setpgid resumed>) = 0 [pid 311] <... openat resumed>) = 3 [pid 480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3 [pid 480] <... openat resumed>) = 3 [pid 311] <... close resumed>) = 0 [pid 480] write(3, "1000", 4 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 480] <... write resumed>) = 4 [pid 480] close(3 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 480] <... close resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 480] write(1, "executing program\n", 18 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 485 executing program [pid 480] <... write resumed>) = 18 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 480] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 480] <... futex resumed>) = 0 [pid 480] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 482] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 480] <... rt_sigaction resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 485 attached [pid 485] set_robust_list(0x55555618f760, 24) = 0 [pid 485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 485] setpgid(0, 0) = 0 [pid 485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 485] write(3, "1000", 4) = 4 [pid 485] close(3) = 0 [pid 485] write(1, "executing program\n", 18) = 18 executing program [pid 485] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 480] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 480] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 485] <... futex resumed>) = 0 [pid 485] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 480] <... mprotect resumed>) = 0 [pid 480] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 480] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[486]}, 88) = 486 [pid 480] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 480] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 485] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 485] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 485] <... mmap resumed>) = 0x7f5cd2d00000 [pid 485] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[487]}, 88) = 487 [pid 485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 485] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 482] <... write resumed>) = 1048576 [pid 483] <... write resumed>) = 1048576 [pid 483] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 484 attached [pid 484] set_robust_list(0x55555618f760, 24ci2-android-6-1/strace-static-x86_64: Process 486 attached [pid 486] set_robust_list(0x7f5cd2d209a0, 24 [pid 484] <... set_robust_list resumed>) = 0 [pid 482] munmap(0x7f5cca900000, 138412032 [pid 484] rt_sigprocmask(SIG_SETMASK, [] [pid 486] <... set_robust_list resumed>) = 0 [pid 486] rt_sigprocmask(SIG_SETMASK, [] [pid 484] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 482] <... munmap resumed>) = 0 [pid 486] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 484] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 482] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 486] memfd_create("syzkaller", 0 [pid 484] <... prctl resumed>) = 0 [pid 482] <... openat resumed>) = 4 ci2-android-6-1/strace-static-x86_64: Process 487 attached [pid 486] <... memfd_create resumed>) = 3 [pid 484] setpgid(0, 0 [pid 483] <... munmap resumed>) = 0 [pid 482] ioctl(4, LOOP_SET_FD, 3 [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 484] <... setpgid resumed>) = 0 [pid 486] <... mmap resumed>) = 0x7f5cca900000 [pid 484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 487] set_robust_list(0x7f5cd2d209a0, 24 [pid 484] <... openat resumed>) = 3 [pid 483] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 482] ioctl(4, LOOP_CLR_FD) = 0 [pid 487] <... set_robust_list resumed>) = 0 [pid 487] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 487] memfd_create("syzkaller", 0) = 3 [pid 483] <... openat resumed>) = 4 [pid 487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 482] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 482] close(4 [pid 487] <... mmap resumed>) = 0x7f5cca900000 [pid 486] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 484] write(3, "1000", 4 [pid 483] ioctl(4, LOOP_SET_FD, 3 [pid 482] <... close resumed>) = 0 [pid 484] <... write resumed>) = 4 [pid 484] close(3) = 0 [pid 484] write(1, "executing program\n", 18) = 18 [pid 484] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 484] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 484] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 484] rt_sigprocmask(SIG_BLOCK, ~[] [pid 482] close(3 [pid 484] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[488]}, 88) = 488 [pid 484] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 484] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 484] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 486] <... write resumed>) = 1048576 [pid 482] <... close resumed>) = 0 [pid 482] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = 0 [pid 482] <... futex resumed>) = 1 [pid 481] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 481] <... futex resumed>) = 0 [pid 482] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 481] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 0 [pid 481] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] truncate("./file1", 36262 [pid 481] <... futex resumed>) = 0 [pid 482] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 481] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 0 [pid 481] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 481] <... futex resumed>) = 0 [pid 482] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 481] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 0 [pid 481] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] read(-1 [pid 481] <... futex resumed>) = 0 [pid 482] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 481] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 0 [pid 482] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] exit_group(0 [pid 482] <... futex resumed>) = ? [pid 481] <... exit_group resumed>) = ? [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] ioctl(4, LOOP_CLR_FD) = 0 [pid 487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 482] +++ exited with 0 +++ [pid 481] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=481, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 ci2-android-6-1/strace-static-x86_64: Process 488 attached [pid 486] munmap(0x7f5cca900000, 138412032 [pid 488] set_robust_list(0x7f5cd2d209a0, 24 [pid 486] <... munmap resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 488] <... set_robust_list resumed>) = 0 [pid 486] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 488] rt_sigprocmask(SIG_SETMASK, [] [pid 486] <... openat resumed>) = 4 [pid 310] ioctl(3, LOOP_CLR_FD [pid 488] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 486] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 488] memfd_create("syzkaller", 0 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 488] <... memfd_create resumed>) = 3 [pid 486] ioctl(4, LOOP_CLR_FD [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 489 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 489 attached [pid 489] set_robust_list(0x55555618f760, 24 [pid 488] <... mmap resumed>) = 0x7f5cca900000 [pid 489] <... set_robust_list resumed>) = 0 [pid 489] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 489] setpgid(0, 0) = 0 [pid 489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 489] write(3, "1000", 4) = 4 [pid 489] close(3) = 0 executing program [pid 489] write(1, "executing program\n", 18) = 18 [pid 489] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 489] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 489] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 489] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 489] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 489] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 489] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[490]}, 88) = 490 [pid 489] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 489] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 489] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 490 attached [pid 490] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 490] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 490] memfd_create("syzkaller", 0) = 3 [pid 490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 488] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 486] <... ioctl resumed>) = 0 [pid 483] close(4) = 0 [pid 483] close(3 [pid 490] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 483] <... close resumed>) = 0 [pid 490] <... write resumed>) = 1048576 [pid 490] munmap(0x7f5cca900000, 138412032) = 0 [pid 490] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 488] <... write resumed>) = 1048576 [pid 486] ioctl(4, LOOP_SET_FD, 3 [pid 483] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 488] munmap(0x7f5cca900000, 138412032 [pid 486] close(4 [pid 483] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 486] <... close resumed>) = 0 [pid 483] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 479] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] close(3 [pid 479] <... futex resumed>) = 0 [pid 483] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 490] <... openat resumed>) = 4 [pid 488] <... munmap resumed>) = 0 [pid 487] <... write resumed>) = 1048576 [pid 486] <... close resumed>) = 0 [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 490] ioctl(4, LOOP_CLR_FD [pid 479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 486] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = 0 [pid 490] <... ioctl resumed>) = 0 [pid 479] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] truncate("./file1", 36262 [pid 488] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 487] munmap(0x7f5cca900000, 138412032 [pid 486] <... futex resumed>) = 1 [pid 483] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 480] <... futex resumed>) = 0 [pid 479] <... futex resumed>) = 0 [pid 488] <... openat resumed>) = 4 [pid 480] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] ioctl(4, LOOP_SET_FD, 3 [pid 487] <... munmap resumed>) = 0 [pid 488] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 483] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... futex resumed>) = 0 [pid 479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 480] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 479] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 487] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 487] ioctl(4, LOOP_CLR_FD) = 0 [pid 488] ioctl(4, LOOP_CLR_FD [pid 483] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 488] <... ioctl resumed>) = 0 [pid 490] ioctl(4, LOOP_SET_FD, 3 [pid 487] ioctl(4, LOOP_SET_FD, 3 [pid 483] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 490] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] close(4) = 0 [pid 487] close(3 [pid 490] close(4 [pid 483] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 486] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 490] <... close resumed>) = 0 [pid 483] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] close(3) = 0 [pid 486] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 479] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 479] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 488] close(4) = 0 [pid 488] close(3 [pid 490] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = 1 [pid 483] read(-1 [pid 480] <... futex resumed>) = 0 [pid 480] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] <... futex resumed>) = 1 [pid 489] <... futex resumed>) = 0 [pid 486] truncate("./file1", 36262 [pid 489] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 490] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 489] <... futex resumed>) = 0 [pid 490] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 489] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] <... futex resumed>) = 0 [pid 486] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 489] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] truncate("./file1", 36262 [pid 489] <... futex resumed>) = 0 [pid 489] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 490] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = 1 [pid 489] <... futex resumed>) = 0 [pid 486] <... futex resumed>) = 1 [pid 489] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = 1 [pid 480] <... futex resumed>) = 0 [pid 490] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 479] <... futex resumed>) = 0 [pid 489] <... futex resumed>) = 0 [pid 480] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] exit_group(0 [pid 490] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 489] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 480] <... futex resumed>) = 0 [pid 479] <... exit_group resumed>) = ? [pid 490] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] <... futex resumed>) = 1 [pid 489] <... futex resumed>) = 0 [pid 488] <... close resumed>) = 0 [pid 486] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 490] read(-1 [pid 489] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 489] <... futex resumed>) = 0 [pid 488] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 490] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] <... futex resumed>) = 0 [pid 489] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 486] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... futex resumed>) = 0 [pid 484] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] exit_group(0 [pid 490] ???( [pid 486] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 480] <... futex resumed>) = 0 [pid 490] <... ??? resumed>) = ? [pid 489] <... exit_group resumed>) = ? [pid 484] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 480] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] read(-1 [pid 480] <... futex resumed>) = 0 [pid 480] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... futex resumed>) = 1 [pid 488] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 490] +++ exited with 0 +++ [pid 489] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=489, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 486] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 488] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 486] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] <... close resumed>) = 0 [pid 483] +++ exited with 0 +++ [pid 479] +++ exited with 0 +++ [pid 488] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=479, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 488] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 488] truncate("./file1", 36262 [pid 487] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = 1 [pid 484] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... futex resumed>) = 0 [pid 488] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 487] <... futex resumed>) = 1 [pid 486] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 485] <... futex resumed>) = 0 [pid 484] <... futex resumed>) = 0 [pid 480] exit_group(0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 488] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 480] <... exit_group resumed>) = ? [pid 308] <... openat resumed>) = 3 [pid 488] <... futex resumed>) = 0 [pid 485] <... futex resumed>) = 0 [pid 484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] ioctl(3, LOOP_CLR_FD [pid 488] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 485] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... ioctl resumed>) = 0 [pid 488] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 484] <... futex resumed>) = 0 [pid 308] close(3 [pid 488] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... close resumed>) = 0 [pid 488] <... futex resumed>) = 0 [pid 484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 488] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... futex resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 488] read(-1 [pid 487] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 486] <... futex resumed>) = ? [pid 484] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 488] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 491 [pid 488] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 488] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 488] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] exit_group(0 [pid 488] <... futex resumed>) = ? [pid 484] <... exit_group resumed>) = ? [pid 488] +++ exited with 0 +++ [pid 484] +++ exited with 0 +++ [pid 486] +++ exited with 0 +++ [pid 480] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=480, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] <... openat resumed>) = 3 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 487] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] <... ioctl resumed>) = 0 [pid 487] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 310] close(3 [pid 487] <... futex resumed>) = 1 [pid 485] <... futex resumed>) = 0 [pid 487] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 485] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... close resumed>) = 0 [pid 485] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 485] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 487] truncate("./file1", 36262 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 487] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 492 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 487] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 487] <... futex resumed>) = 1 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 487] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 487] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = 1 [pid 485] exit_group(0) = ? [pid 487] +++ exited with 0 +++ [pid 485] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=485, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 491 attached [pid 309] <... restart_syscall resumed>) = 0 [pid 491] set_robust_list(0x55555618f760, 24ci2-android-6-1/strace-static-x86_64: Process 492 attached [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 491] <... set_robust_list resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 492] set_robust_list(0x55555618f760, 24 [pid 491] rt_sigprocmask(SIG_SETMASK, [] [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 493 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 491] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 492] <... set_robust_list resumed>) = 0 [pid 491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 491] setpgid(0, 0 [pid 492] rt_sigprocmask(SIG_SETMASK, [] [pid 491] <... setpgid resumed>) = 0 [pid 492] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 492] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 491] write(3, "1000", 4 [pid 311] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 492] <... prctl resumed>) = 0 [pid 491] <... write resumed>) = 4 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 311] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 307] close(3 [pid 311] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 311] close(3 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] <... close resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 494 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 495 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 491] close(3 [pid 492] setpgid(0, 0 [pid 491] <... close resumed>) = 0 [pid 492] <... setpgid resumed>) = 0 [pid 491] write(1, "executing program\n", 18) = 18 executing program [pid 491] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 493 attached [pid 493] set_robust_list(0x55555618f760, 24) = 0 [pid 493] rt_sigprocmask(SIG_SETMASK, [] [pid 491] <... futex resumed>) = 0 [pid 493] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 493] setpgid(0, 0) = 0 [pid 493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 491] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 493] <... openat resumed>) = 3 [pid 493] write(3, "1000", 4) = 4 [pid 493] close(3) = 0 executing program [pid 493] write(1, "executing program\n", 18) = 18 [pid 493] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 493] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 491] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 493] <... mmap resumed>) = 0x7f5cd2d00000 [pid 493] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 ci2-android-6-1/strace-static-x86_64: Process 494 attached [pid 493] rt_sigprocmask(SIG_BLOCK, ~[] [pid 491] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 494] set_robust_list(0x55555618f760, 24) = 0 [pid 492] <... openat resumed>) = 3 [pid 493] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 493] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 494] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 493] <... clone3 resumed> => {parent_tid=[496]}, 88) = 496 [pid 493] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 493] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 494] <... prctl resumed>) = 0 [pid 494] setpgid(0, 0) = 0 [pid 494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 494] write(3, "1000", 4) = 4 executing program [pid 494] close(3) = 0 [pid 494] write(1, "executing program\n", 18) = 18 ci2-android-6-1/strace-static-x86_64: Process 495 attached [pid 494] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] set_robust_list(0x55555618f760, 24 [pid 494] <... futex resumed>) = 0 [pid 494] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 494] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 495] <... set_robust_list resumed>) = 0 [pid 494] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 491] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 492] write(3, "1000", 4 [pid 494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 494] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 495] rt_sigprocmask(SIG_SETMASK, [] [pid 494] <... mprotect resumed>) = 0 [pid 495] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 495] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 494] rt_sigprocmask(SIG_BLOCK, ~[] [pid 495] <... prctl resumed>) = 0 [pid 494] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 495] setpgid(0, 0 [pid 494] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 495] <... setpgid resumed>) = 0 [pid 495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 494] <... clone3 resumed> => {parent_tid=[497]}, 88) = 497 [pid 494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 495] <... openat resumed>) = 3 [pid 494] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 495] write(3, "1000", 4) = 4 [pid 495] close(3) = 0 [pid 495] write(1, "executing program\n", 18) = 18 [pid 495] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 495] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 495] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 495] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 495] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 495] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[498]}, 88) = 498 [pid 495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 495] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 496 attached [pid 496] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 496] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 496] memfd_create("syzkaller", 0) = 3 [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 497 attached [pid 497] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 497] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 497] memfd_create("syzkaller", 0) = 3 [pid 497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program [pid 496] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 491] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 492] <... write resumed>) = 4 [pid 491] <... mmap resumed>) = 0x7f5cd2d00000 [pid 492] close(3 [pid 491] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 492] <... close resumed>) = 0 [pid 491] <... mprotect resumed>) = 0 [pid 492] write(1, "executing program\n", 18 executing program [pid 491] rt_sigprocmask(SIG_BLOCK, ~[] [pid 492] <... write resumed>) = 18 [pid 492] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 492] <... futex resumed>) = 0 [pid 491] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 492] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 492] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 491] <... clone3 resumed> => {parent_tid=[499]}, 88) = 499 [pid 492] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 491] rt_sigprocmask(SIG_SETMASK, [] [pid 492] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 491] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 492] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 491] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... mprotect resumed>) = 0 [pid 491] <... futex resumed>) = 0 [pid 491] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 492] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 492] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[500]}, 88) = 500 [pid 492] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 492] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 497] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 498 attached [pid 498] set_robust_list(0x7f5cd2d209a0, 24 [pid 497] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 499 attached [pid 498] <... set_robust_list resumed>) = 0 [pid 499] set_robust_list(0x7f5cd2d209a0, 24 [pid 498] rt_sigprocmask(SIG_SETMASK, [] [pid 499] <... set_robust_list resumed>) = 0 [pid 498] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 500 attached [pid 500] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 498] memfd_create("syzkaller", 0 [pid 500] memfd_create("syzkaller", 0) = 3 [pid 498] <... memfd_create resumed>) = 3 [pid 500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 498] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 499] rt_sigprocmask(SIG_SETMASK, [] [pid 498] <... mmap resumed>) = 0x7f5cca900000 [pid 499] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 496] <... write resumed>) = 1048576 [pid 496] munmap(0x7f5cca900000, 138412032 [pid 499] memfd_create("syzkaller", 0 [pid 496] <... munmap resumed>) = 0 [pid 496] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 496] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 496] ioctl(4, LOOP_CLR_FD) = 0 [pid 497] munmap(0x7f5cca900000, 138412032) = 0 [pid 497] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 497] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 497] ioctl(4, LOOP_CLR_FD) = 0 [pid 496] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 496] close(4) = 0 [pid 496] close(3 [pid 499] <... memfd_create resumed>) = 3 [pid 497] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 497] close(4) = 0 [pid 497] close(3 [pid 498] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 497] <... close resumed>) = 0 [pid 496] <... close resumed>) = 0 [pid 496] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... futex resumed>) = 1 [pid 496] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 496] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... futex resumed>) = 1 [pid 496] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 496] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... futex resumed>) = 1 [pid 496] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 496] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... futex resumed>) = 1 [pid 496] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 496] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 493] exit_group(0) = ? [pid 496] <... futex resumed>) = ? [pid 499] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 500] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 496] +++ exited with 0 +++ [pid 493] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=493, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 497] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... futex resumed>) = 0 [pid 494] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... futex resumed>) = 1 [pid 497] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 497] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... futex resumed>) = 0 [pid 494] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... futex resumed>) = 1 [pid 497] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 497] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... futex resumed>) = 0 [pid 494] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... futex resumed>) = 1 [pid 497] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 497] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... futex resumed>) = 0 [pid 494] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... futex resumed>) = 1 [pid 497] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 497] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... futex resumed>) = 0 [pid 494] exit_group(0) = ? [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 501 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 497] <... futex resumed>) = ? [pid 497] +++ exited with 0 +++ [pid 494] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=494, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 502 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 498] <... write resumed>) = 1048576 [pid 500] <... write resumed>) = 1048576 [pid 499] <... write resumed>) = 1048576 [pid 498] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 501 attached [pid 501] set_robust_list(0x55555618f760, 24) = 0 [pid 501] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 501] prctl(PR_SET_PDEATHSIG, SIGKILLci2-android-6-1/strace-static-x86_64: Process 502 attached ) = 0 [pid 500] munmap(0x7f5cca900000, 138412032 [pid 499] munmap(0x7f5cca900000, 138412032 [pid 498] <... munmap resumed>) = 0 [pid 498] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 502] set_robust_list(0x55555618f760, 24 [pid 499] <... munmap resumed>) = 0 [pid 498] <... openat resumed>) = 4 [pid 500] <... munmap resumed>) = 0 [pid 498] ioctl(4, LOOP_SET_FD, 3 [pid 499] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 502] <... set_robust_list resumed>) = 0 [pid 501] setpgid(0, 0 [pid 498] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 499] <... openat resumed>) = 4 [pid 498] ioctl(4, LOOP_CLR_FD [pid 502] rt_sigprocmask(SIG_SETMASK, [] [pid 501] <... setpgid resumed>) = 0 [pid 499] ioctl(4, LOOP_SET_FD, 3 [pid 498] <... ioctl resumed>) = 0 [pid 500] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 502] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 499] ioctl(4, LOOP_CLR_FD [pid 502] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 499] <... ioctl resumed>) = 0 [pid 502] <... prctl resumed>) = 0 [pid 501] <... openat resumed>) = 3 [pid 500] <... openat resumed>) = 4 [pid 502] setpgid(0, 0) = 0 [pid 502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 502] write(3, "1000", 4) = 4 [pid 502] close(3) = 0 [pid 502] write(1, "executing program\n", 18 [pid 501] write(3, "1000", 4 [pid 500] ioctl(4, LOOP_SET_FD, 3 [pid 498] ioctl(4, LOOP_SET_FD, 3 [pid 502] <... write resumed>) = 18 [pid 501] <... write resumed>) = 4 [pid 498] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] close(3 [pid 498] close(4 [pid 502] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 498] <... close resumed>) = 0 [pid 501] <... close resumed>) = 0 [pid 500] ioctl(4, LOOP_CLR_FD [pid 498] close(3 [pid 499] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 499] close(4) = 0 [pid 499] close(3 [pid 501] write(1, "executing program\n", 18 [pid 500] <... ioctl resumed>) = 0 [pid 499] <... close resumed>) = 0 [pid 498] <... close resumed>) = 0 [pid 502] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 498] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... write resumed>) = 18 [pid 498] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 502] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 501] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 495] <... futex resumed>) = 0 [pid 502] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 495] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 executing program executing program [pid 502] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 502] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 502] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[503]}, 88) = 503 [pid 502] rt_sigprocmask(SIG_SETMASK, [] [pid 501] <... futex resumed>) = 0 [pid 498] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 502] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 501] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 500] ioctl(4, LOOP_SET_FD, 3 [pid 498] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 501] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 500] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 500] close(4 [pid 498] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 501] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 500] <... close resumed>) = 0 [pid 498] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... mmap resumed>) = 0x7f5cd2d00000 [pid 502] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] close(3 [pid 498] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 502] <... futex resumed>) = 0 [pid 501] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 495] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 499] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] <... futex resumed>) = 0 [pid 499] <... futex resumed>) = 1 [pid 495] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] <... futex resumed>) = 0 [pid 498] truncate("./file1", 36262 [pid 501] <... mprotect resumed>) = 0 [pid 499] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 498] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 491] <... futex resumed>) = 0 [pid 501] rt_sigprocmask(SIG_BLOCK, ~[] [pid 498] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 499] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 498] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 501] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 500] <... close resumed>) = 0 [pid 499] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 498] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 495] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 495] <... futex resumed>) = 0 [pid 501] <... clone3 resumed> => {parent_tid=[504]}, 88) = 504 [pid 500] <... futex resumed>) = 1 [pid 499] <... futex resumed>) = 1 [pid 498] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] <... futex resumed>) = 0 [pid 491] <... futex resumed>) = 0 [pid 501] rt_sigprocmask(SIG_SETMASK, [] [pid 500] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 498] <... futex resumed>) = 0 [pid 495] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 500] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 498] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... futex resumed>) = 0 [pid 491] <... futex resumed>) = 0 [pid 501] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 499] truncate("./file1", 36262 [pid 498] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 495] <... futex resumed>) = 0 [pid 492] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... futex resumed>) = 0 [pid 500] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 499] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 498] read(-1 [pid 495] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 500] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 500] <... futex resumed>) = 1 [pid 498] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 504 attached ci2-android-6-1/strace-static-x86_64: Process 503 attached [pid 500] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... futex resumed>) = 1 [pid 498] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 492] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... futex resumed>) = 0 [pid 504] set_robust_list(0x7f5cd2d209a0, 24 [pid 503] set_robust_list(0x7f5cd2d209a0, 24 [pid 500] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 498] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] exit_group(0 [pid 492] <... futex resumed>) = 0 [pid 491] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... set_robust_list resumed>) = 0 [pid 503] <... set_robust_list resumed>) = 0 [pid 500] truncate("./file1", 36262 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 498] <... futex resumed>) = ? [pid 495] <... exit_group resumed>) = ? [pid 492] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] <... futex resumed>) = 0 [pid 504] rt_sigprocmask(SIG_SETMASK, [] [pid 503] rt_sigprocmask(SIG_SETMASK, [] [pid 500] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 498] +++ exited with 0 +++ [pid 504] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 503] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 500] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] memfd_create("syzkaller", 0 [pid 503] memfd_create("syzkaller", 0 [pid 500] <... futex resumed>) = 1 [pid 492] <... futex resumed>) = 0 [pid 504] <... memfd_create resumed>) = 3 [pid 503] <... memfd_create resumed>) = 3 [pid 500] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 495] +++ exited with 0 +++ [pid 492] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 500] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 492] <... futex resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=495, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 504] <... mmap resumed>) = 0x7f5cca900000 [pid 503] <... mmap resumed>) = 0x7f5cca900000 [pid 500] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 499] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 504] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 503] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 500] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 499] <... futex resumed>) = 1 [pid 491] <... futex resumed>) = 0 [pid 500] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] <... futex resumed>) = 1 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] <... futex resumed>) = 0 [pid 491] <... futex resumed>) = 0 [pid 500] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] read(-1 [pid 492] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 492] <... futex resumed>) = 0 [pid 500] read(-1 [pid 499] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 499] <... futex resumed>) = 1 [pid 491] <... futex resumed>) = 0 [pid 500] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] <... restart_syscall resumed>) = 0 [pid 500] <... futex resumed>) = 1 [pid 492] <... futex resumed>) = 0 [pid 491] exit_group(0 [pid 500] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... futex resumed>) = ? [pid 492] exit_group(0 [pid 491] <... exit_group resumed>) = ? [pid 500] <... futex resumed>) = ? [pid 492] <... exit_group resumed>) = ? [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 504] <... write resumed>) = 1048576 [pid 500] +++ exited with 0 +++ [pid 499] +++ exited with 0 +++ [pid 492] +++ exited with 0 +++ [pid 491] +++ exited with 0 +++ [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=492, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=491, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 311] <... ioctl resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 503] <... write resumed>) = 1048576 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 505 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 504] munmap(0x7f5cca900000, 138412032) = 0 [pid 504] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 504] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 504] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 505 attached [pid 505] set_robust_list(0x55555618f760, 24) = 0 [pid 505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 503] munmap(0x7f5cca900000, 138412032 [pid 505] setpgid(0, 0) = 0 [pid 505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 503] <... munmap resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 504] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 308] <... openat resumed>) = 3 [pid 504] close(4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 504] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 504] close(3 [pid 308] close(3 [pid 504] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 505] write(3, "1000", 4 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 505] <... write resumed>) = 4 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 503] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 505] close(3 [pid 503] <... openat resumed>) = 4 [pid 505] <... close resumed>) = 0 [pid 505] write(1, "executing program\n", 18) = 18 [pid 503] ioctl(4, LOOP_SET_FD, 3 [pid 505] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 503] ioctl(4, LOOP_CLR_FD) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 506 [pid 505] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 505] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 505] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 505] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[507]}, 88) = 507 [pid 505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 505] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 508 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 503] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 503] close(4) = 0 [pid 503] close(3) = 0 [pid 505] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 504] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = 0 [pid 501] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 501] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... futex resumed>) = 1 [pid 504] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 504] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = 0 [pid 501] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 501] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... futex resumed>) = 1 [pid 504] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 504] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = 0 [pid 501] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 501] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... futex resumed>) = 1 [pid 504] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 504] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = 0 [pid 501] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 501] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... futex resumed>) = 1 [pid 504] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 504] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 501] <... futex resumed>) = 0 [pid 504] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] exit_group(0 [pid 504] <... futex resumed>) = ? [pid 501] <... exit_group resumed>) = ? [pid 504] +++ exited with 0 +++ [pid 501] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=501, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 503] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 503] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 502] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 503] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 502] <... futex resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 502] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] close(3 [pid 503] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 309] <... close resumed>) = 0 [pid 503] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 503] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 503] truncate("./file1", 36262 [pid 502] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 503] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 502] <... futex resumed>) = 0 [pid 503] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... futex resumed>) = 0 [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 503] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 502] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 502] <... futex resumed>) = 0 [pid 503] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... futex resumed>) = 0 [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 503] read(-1 [pid 502] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 509 [pid 503] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 502] <... futex resumed>) = 0 [pid 503] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 503] <... futex resumed>) = 0 [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 503] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 502] exit_group(0 [pid 503] <... futex resumed>) = ? [pid 502] <... exit_group resumed>) = ? [pid 503] +++ exited with 0 +++ [pid 502] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 509 attached [pid 509] set_robust_list(0x55555618f760, 24) = 0 [pid 509] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 507 attached [pid 507] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 507] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 509] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 507] memfd_create("syzkaller", 0 [pid 509] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 507] <... memfd_create resumed>) = 3 [pid 509] <... prctl resumed>) = 0 [pid 509] setpgid(0, 0) = 0 [pid 509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 509] <... openat resumed>) = 3 [pid 509] write(3, "1000", 4) = 4 [pid 509] close(3) = 0 [pid 509] write(1, "executing program\n", 18) = 18 [pid 509] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 509] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 509] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 509] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 509] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[510]}, 88) = 510 [pid 509] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 509] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} executing program [pid 507] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 511 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 508 attached ci2-android-6-1/strace-static-x86_64: Process 506 attached [pid 506] set_robust_list(0x55555618f760, 24 [pid 508] set_robust_list(0x55555618f760, 24) = 0 [pid 506] <... set_robust_list resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 510 attached [pid 510] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 510] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 510] memfd_create("syzkaller", 0 [pid 508] rt_sigprocmask(SIG_SETMASK, [] [pid 510] <... memfd_create resumed>) = 3 [pid 510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 506] rt_sigprocmask(SIG_SETMASK, [] [pid 508] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 508] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 506] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 506] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 508] <... prctl resumed>) = 0 [pid 508] setpgid(0, 0 [pid 506] <... prctl resumed>) = 0 [pid 507] <... write resumed>) = 1048576 [pid 507] munmap(0x7f5cca900000, 138412032) = 0 [pid 507] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 507] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 507] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 511 attached [pid 511] set_robust_list(0x55555618f760, 24) = 0 [pid 511] rt_sigprocmask(SIG_SETMASK, [] [pid 508] <... setpgid resumed>) = 0 [pid 506] setpgid(0, 0 [pid 511] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 511] setpgid(0, 0 [pid 507] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 507] close(4) = 0 [pid 506] <... setpgid resumed>) = 0 [pid 508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 507] close(3 [pid 506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] <... openat resumed>) = 3 [pid 506] <... openat resumed>) = 3 [pid 508] write(3, "1000", 4 [pid 506] write(3, "1000", 4 [pid 508] <... write resumed>) = 4 [pid 508] close(3 [pid 506] <... write resumed>) = 4 [pid 508] <... close resumed>) = 0 [pid 506] close(3 [pid 511] <... setpgid resumed>) = 0 [pid 511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] write(1, "executing program\n", 18 [pid 506] <... close resumed>) = 0 [pid 506] write(1, "executing program\n", 18 [pid 508] <... write resumed>) = 18 executing program executing program [pid 506] <... write resumed>) = 18 [pid 511] <... openat resumed>) = 3 [pid 508] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 506] <... futex resumed>) = 0 [pid 508] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 506] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 508] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 511] write(3, "1000", 4) = 4 [pid 511] close(3) = 0 [pid 506] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 508] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 506] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 506] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 508] <... mmap resumed>) = 0x7f5cd2d00000 [pid 506] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 511] write(1, "executing program\n", 18) = 18 executing program [pid 511] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 506] <... mmap resumed>) = 0x7f5cd2d00000 [pid 508] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 506] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 508] <... mprotect resumed>) = 0 [pid 511] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 506] <... mprotect resumed>) = 0 [pid 508] rt_sigprocmask(SIG_BLOCK, ~[] [pid 511] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 506] rt_sigprocmask(SIG_BLOCK, ~[] [pid 508] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 511] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 511] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 506] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 506] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[513]}, 88) = 513 [pid 508] <... clone3 resumed> => {parent_tid=[512]}, 88) = 512 [pid 506] rt_sigprocmask(SIG_SETMASK, [] [pid 508] rt_sigprocmask(SIG_SETMASK, [] [pid 506] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 508] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 506] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] <... futex resumed>) = 0 [pid 508] <... futex resumed>) = 0 [pid 506] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 508] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 511] <... mprotect resumed>) = 0 [pid 511] rt_sigprocmask(SIG_BLOCK, ~[] [pid 510] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 511] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 511] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 507] <... close resumed>) = 0 [pid 511] <... clone3 resumed> => {parent_tid=[514]}, 88) = 514 [pid 511] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 511] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 507] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] <... futex resumed>) = 1 [pid 507] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 507] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] <... futex resumed>) = 1 [pid 507] truncate("./file1", 36262) = -1 EISDIR (Is a directory) ci2-android-6-1/strace-static-x86_64: Process 513 attached [pid 507] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] <... futex resumed>) = 1 [pid 513] set_robust_list(0x7f5cd2d209a0, 24 [pid 507] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 513] <... set_robust_list resumed>) = 0 [pid 507] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] <... futex resumed>) = 1 [pid 507] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 507] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 505] exit_group(0) = ? [pid 507] <... futex resumed>) = ? [pid 507] +++ exited with 0 +++ [pid 505] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 512 attached [pid 512] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 512] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 512] memfd_create("syzkaller", 0) = 3 [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 513] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 513] memfd_create("syzkaller", 0) = 3 [pid 513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0ci2-android-6-1/strace-static-x86_64: Process 514 attached [pid 514] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 514] memfd_create("syzkaller", 0 [pid 513] <... mmap resumed>) = 0x7f5cca900000 [pid 514] <... memfd_create resumed>) = 3 [pid 514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 513] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 510] <... write resumed>) = 1048576 [pid 510] munmap(0x7f5cca900000, 138412032) = 0 [pid 510] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 510] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 510] ioctl(4, LOOP_CLR_FD) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 515 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 510] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 510] close(4) = 0 [pid 510] close(3 [pid 512] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 510] <... close resumed>) = 0 [pid 510] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 509] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... futex resumed>) = 1 [pid 510] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 510] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 509] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... futex resumed>) = 1 [pid 510] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 510] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 509] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... futex resumed>) = 1 [pid 510] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 510] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 509] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... futex resumed>) = 1 [pid 510] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 510] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 509] exit_group(0) = ? [pid 510] <... futex resumed>) = ? [pid 510] +++ exited with 0 +++ [pid 509] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=509, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 514] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 515 attached [pid 515] set_robust_list(0x55555618f760, 24) = 0 [pid 515] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 515] setpgid(0, 0) = 0 [pid 515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 515] write(3, "1000", 4) = 4 [pid 515] close(3) = 0 [pid 515] write(1, "executing program\n", 18) = 18 executing program [pid 515] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 515] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 515] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 515] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 515] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 515] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... restart_syscall resumed>) = 0 [pid 515] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 515] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 515] <... clone3 resumed> => {parent_tid=[516]}, 88) = 516 [pid 309] close(3 [pid 515] rt_sigprocmask(SIG_SETMASK, [] [pid 309] <... close resumed>) = 0 [pid 515] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 515] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 515] <... futex resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 515] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 517 [pid 514] <... write resumed>) = 1048576 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 512] <... write resumed>) = 1048576 [pid 512] munmap(0x7f5cca900000, 138412032) = 0 [pid 512] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 512] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 512] ioctl(4, LOOP_CLR_FD) = 0 [pid 514] munmap(0x7f5cca900000, 138412032) = 0 [pid 514] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 514] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 514] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 516 attached [pid 516] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 516] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 516] memfd_create("syzkaller", 0) = 3 [pid 516] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 512] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 512] close(4) = 0 [pid 512] close(3 [pid 514] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 514] close(4) = 0 [pid 514] close(3 [pid 513] <... write resumed>) = 1048576 [pid 516] <... mmap resumed>) = 0x7f5cca900000 [pid 513] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 517 attached ) = 0 [pid 517] set_robust_list(0x55555618f760, 24) = 0 [pid 513] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 517] rt_sigprocmask(SIG_SETMASK, [] [pid 513] <... openat resumed>) = 4 [pid 517] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 513] ioctl(4, LOOP_SET_FD, 3 [pid 512] <... close resumed>) = 0 [pid 512] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 517] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 517] <... prctl resumed>) = 0 [pid 512] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 513] ioctl(4, LOOP_CLR_FD [pid 512] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 517] setpgid(0, 0 [pid 513] <... ioctl resumed>) = 0 [pid 508] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... futex resumed>) = 1 [pid 517] <... setpgid resumed>) = 0 [pid 512] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 512] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... futex resumed>) = 1 [pid 517] <... openat resumed>) = 3 [pid 514] <... close resumed>) = 0 [pid 512] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 517] write(3, "1000", 4 [pid 512] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 517] <... write resumed>) = 4 [pid 508] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 517] close(3 [pid 512] <... futex resumed>) = 1 [pid 512] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 512] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 508] exit_group(0 [pid 517] <... close resumed>) = 0 [pid 508] <... exit_group resumed>) = ? [pid 517] write(1, "executing program\n", 18 [pid 513] ioctl(4, LOOP_SET_FD, 3 [pid 512] <... futex resumed>) = ? executing program [pid 517] <... write resumed>) = 18 [pid 512] +++ exited with 0 +++ [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 514] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... futex resumed>) = 1 [pid 514] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 513] close(4 [pid 517] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 513] <... close resumed>) = 0 [pid 514] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 517] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 513] close(3 [pid 514] <... futex resumed>) = 1 [pid 514] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 514] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... futex resumed>) = 1 [pid 514] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 514] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... futex resumed>) = 1 [pid 514] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 514] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] exit_group(0) = ? [pid 514] <... futex resumed>) = ? [pid 517] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 514] +++ exited with 0 +++ [pid 513] <... close resumed>) = 0 [pid 511] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 517] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 516] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 513] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 516] <... write resumed>) = 1048576 [pid 513] <... futex resumed>) = 1 [pid 506] <... futex resumed>) = 0 [pid 517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 513] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 506] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] munmap(0x7f5cca900000, 138412032 [pid 506] <... futex resumed>) = 0 [pid 517] <... mmap resumed>) = 0x7f5cd2d00000 [pid 506] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 517] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 513] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] rt_sigprocmask(SIG_BLOCK, ~[] [pid 513] <... futex resumed>) = 1 [pid 506] <... futex resumed>) = 0 [pid 506] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 513] truncate("./file1", 36262 [pid 506] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... restart_syscall resumed>) = 0 [pid 517] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 513] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 513] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 517] <... clone3 resumed> => {parent_tid=[518]}, 88) = 518 [pid 513] <... futex resumed>) = 1 [pid 506] <... futex resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 517] rt_sigprocmask(SIG_SETMASK, [] [pid 513] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 506] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 517] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 513] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 506] <... futex resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 517] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 517] <... futex resumed>) = 0 [pid 513] <... futex resumed>) = 0 [pid 506] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 519 [pid 517] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 513] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 506] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 506] <... futex resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 513] read(-1 [pid 506] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 513] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] <... futex resumed>) = 0 [pid 513] <... futex resumed>) = 1 [pid 516] <... munmap resumed>) = 0 [pid 516] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 513] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 506] exit_group(0) = ? [pid 513] <... futex resumed>) = ? [pid 516] <... openat resumed>) = 4 [pid 516] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 516] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 518 attached [pid 518] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 518] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 513] +++ exited with 0 +++ [pid 506] +++ exited with 0 +++ [pid 518] memfd_create("syzkaller", 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=506, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 518] <... memfd_create resumed>) = 3 [pid 518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 516] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 516] close(4) = 0 [pid 516] close(3 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 520 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 516] <... close resumed>) = 0 [pid 516] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... futex resumed>) = 0 [pid 515] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 515] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 1 [pid 516] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 516] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... futex resumed>) = 0 [pid 515] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 515] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 1 [pid 516] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 516] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... futex resumed>) = 0 [pid 515] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 515] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 1 [pid 516] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 516] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... futex resumed>) = 0 [pid 515] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 515] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 1 [pid 516] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 516] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... futex resumed>) = 0 [pid 515] exit_group(0) = ? [pid 516] <... futex resumed>) = ? [pid 516] +++ exited with 0 +++ [pid 515] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=515, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] <... restart_syscall resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 519 attached [pid 519] set_robust_list(0x55555618f760, 24 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 519] <... set_robust_list resumed>) = 0 [pid 519] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... openat resumed>) = 3 [pid 519] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 519] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... ioctl resumed>) = 0 [pid 519] <... prctl resumed>) = 0 [pid 308] close(3 [pid 519] setpgid(0, 0 [pid 308] <... close resumed>) = 0 [pid 519] <... setpgid resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 519] <... openat resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 519] write(3, "1000", 4) = 4 [pid 519] close(3) = 0 [pid 519] write(1, "executing program\n", 18) = 18 executing program [pid 519] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 521 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 519] <... futex resumed>) = 0 [pid 519] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 519] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 519] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 519] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 519] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 519] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[522]}, 88) = 522 [pid 519] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 519] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 519] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 520 attached [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 520] set_robust_list(0x55555618f760, 24 [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 520] <... set_robust_list resumed>) = 0 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 523 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 520] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 520] setpgid(0, 0) = 0 [pid 518] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECci2-android-6-1/strace-static-x86_64: Process 521 attached [pid 521] set_robust_list(0x55555618f760, 24) = 0 [pid 520] <... openat resumed>) = 3 [pid 520] write(3, "1000", 4 [pid 521] rt_sigprocmask(SIG_SETMASK, [] [pid 520] <... write resumed>) = 4 [pid 521] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 520] close(3 [pid 521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 521] setpgid(0, 0) = 0 [pid 521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC executing program [pid 520] <... close resumed>) = 0 [pid 520] write(1, "executing program\n", 18) = 18 [pid 520] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... openat resumed>) = 3 [pid 520] <... futex resumed>) = 0 [pid 521] write(3, "1000", 4 [pid 520] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 521] <... write resumed>) = 4 [pid 520] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 521] close(3) = 0 executing program [pid 521] write(1, "executing program\n", 18) = 18 [pid 521] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 521] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 521] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 521] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 520] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 523 attached [pid 521] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 523] set_robust_list(0x55555618f760, 24 [pid 521] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 521] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 523] <... set_robust_list resumed>) = 0 [pid 520] <... mmap resumed>) = 0x7f5cd2d00000 ci2-android-6-1/strace-static-x86_64: Process 522 attached [pid 520] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 522] set_robust_list(0x7f5cd2d209a0, 24 [pid 521] <... clone3 resumed> => {parent_tid=[524]}, 88) = 524 [pid 521] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 521] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... set_robust_list resumed>) = 0 [pid 521] <... futex resumed>) = 0 [pid 522] rt_sigprocmask(SIG_SETMASK, [] [pid 521] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 522] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 522] memfd_create("syzkaller", 0) = 3 [pid 520] <... mprotect resumed>) = 0 [pid 522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 522] <... mmap resumed>) = 0x7f5cca900000 [pid 520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 520] <... clone3 resumed> => {parent_tid=[525]}, 88) = 525 [pid 520] rt_sigprocmask(SIG_SETMASK, [] [pid 523] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 520] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 520] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... prctl resumed>) = 0 [pid 520] <... futex resumed>) = 0 [pid 523] setpgid(0, 0 [pid 520] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 523] <... setpgid resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 524 attached [pid 523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 518] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 525 attached [pid 525] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 518] munmap(0x7f5cca900000, 138412032 [pid 525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 523] <... openat resumed>) = 3 [pid 525] memfd_create("syzkaller", 0 [pid 523] write(3, "1000", 4) = 4 [pid 524] set_robust_list(0x7f5cd2d209a0, 24 [pid 525] <... memfd_create resumed>) = 3 [pid 523] close(3 [pid 524] <... set_robust_list resumed>) = 0 [pid 525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 524] rt_sigprocmask(SIG_SETMASK, [] [pid 523] <... close resumed>) = 0 [pid 524] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 523] write(1, "executing program\n", 18 [pid 518] <... munmap resumed>) = 0 executing program [pid 518] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 525] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 524] memfd_create("syzkaller", 0 [pid 523] <... write resumed>) = 18 [pid 518] <... openat resumed>) = 4 [pid 518] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 518] ioctl(4, LOOP_CLR_FD) = 0 [pid 523] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 523] <... futex resumed>) = 0 [pid 523] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 518] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 518] close(4) = 0 [pid 523] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 518] close(3 [pid 523] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 523] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 524] <... memfd_create resumed>) = 3 [pid 523] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 524] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 523] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 524] <... mmap resumed>) = 0x7f5cca900000 [pid 523] <... clone3 resumed> => {parent_tid=[526]}, 88) = 526 [pid 523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 523] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 518] <... close resumed>) = 0 [pid 524] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 518] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 517] <... futex resumed>) = 0 [pid 518] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 517] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 518] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 517] <... futex resumed>) = 0 [pid 518] truncate("./file1", 36262 [pid 517] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 517] <... futex resumed>) = 0 [pid 518] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 517] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 517] <... futex resumed>) = 0 [pid 518] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] read(-1 [pid 517] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 517] <... futex resumed>) = 0 [pid 518] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] exit_group(0) = ? [pid 518] <... futex resumed>) = ? [pid 518] +++ exited with 0 +++ [pid 517] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 522] <... write resumed>) = 1048576 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 522] munmap(0x7f5cca900000, 138412032 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 522] <... munmap resumed>) = 0 [pid 522] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 522] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 527 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 522] ioctl(4, LOOP_CLR_FD [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 522] <... ioctl resumed>) = 0 [pid 525] <... write resumed>) = 1048576 [pid 522] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 522] close(4) = 0 [pid 522] close(3) = 0 [pid 525] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 526 attached ) = 0 [pid 525] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 525] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 525] ioctl(4, LOOP_CLR_FD) = 0 [pid 522] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] <... futex resumed>) = 0 [pid 519] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 519] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] <... futex resumed>) = 1 [pid 522] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) ci2-android-6-1/strace-static-x86_64: Process 527 attached [pid 527] set_robust_list(0x55555618f760, 24 [pid 522] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] <... futex resumed>) = 0 [pid 519] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 519] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] <... futex resumed>) = 1 [pid 522] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 527] <... set_robust_list resumed>) = 0 [pid 527] rt_sigprocmask(SIG_SETMASK, [] [pid 522] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 525] close(4) = 0 [pid 525] close(3 [pid 519] <... futex resumed>) = 0 [pid 519] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 519] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] <... futex resumed>) = 1 [pid 522] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 527] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 522] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 526] set_robust_list(0x7f5cd2d209a0, 24 [pid 519] <... futex resumed>) = 0 [pid 519] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 519] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] <... futex resumed>) = 1 [pid 522] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 522] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] <... futex resumed>) = 0 [pid 519] exit_group(0 [pid 526] <... set_robust_list resumed>) = 0 [pid 519] <... exit_group resumed>) = ? [pid 526] rt_sigprocmask(SIG_SETMASK, [] [pid 522] <... futex resumed>) = ? [pid 526] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 522] +++ exited with 0 +++ [pid 519] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=519, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 527] <... prctl resumed>) = 0 [pid 527] setpgid(0, 0) = 0 [pid 527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 526] memfd_create("syzkaller", 0) = 3 [pid 527] write(3, "1000", 4 [pid 526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 527] <... write resumed>) = 4 [pid 527] close(3) = 0 [pid 527] write(1, "executing program\n", 18) = 18 executing program [pid 527] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 527] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 527] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 526] <... mmap resumed>) = 0x7f5cca900000 [pid 524] <... write resumed>) = 1048576 [pid 527] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 527] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 527] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[528]}, 88) = 528 [pid 527] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 527] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 525] <... close resumed>) = 0 [pid 525] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 520] <... futex resumed>) = 0 [pid 525] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 520] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 520] <... futex resumed>) = 0 [pid 525] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... futex resumed>) = 0 [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] truncate("./file1", 36262 [pid 520] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 520] <... futex resumed>) = 0 [pid 525] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... futex resumed>) = 0 [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 520] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 520] <... futex resumed>) = 0 [pid 525] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 520] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 525] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... futex resumed>) = 1 [pid 525] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 525] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = 0 [pid 520] exit_group(0) = ? [pid 525] <... futex resumed>) = ? [pid 525] +++ exited with 0 +++ [pid 520] +++ exited with 0 +++ [pid 526] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 528 attached [pid 528] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 528] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 528] memfd_create("syzkaller", 0 [pid 524] munmap(0x7f5cca900000, 138412032 [pid 528] <... memfd_create resumed>) = 3 [pid 528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 524] <... munmap resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 529 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 528] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 530 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 528] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 529 attached [pid 529] set_robust_list(0x55555618f760, 24) = 0 [pid 529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 529] setpgid(0, 0) = 0 [pid 529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 524] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 529] write(3, "1000", 4) = 4 [pid 529] close(3) = 0 [pid 529] write(1, "executing program\n", 18) = 18 [pid 529] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 529] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 529] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 529] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 529] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[531]}, 88) = 531 [pid 529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 529] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 528] munmap(0x7f5cca900000, 138412032) = 0 [pid 528] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 528] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 528] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 530 attached [pid 530] set_robust_list(0x55555618f760, 24) = 0 [pid 530] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 530] setpgid(0, 0) = 0 executing program [pid 530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 530] write(3, "1000", 4 [pid 524] <... openat resumed>) = 4 [pid 530] <... write resumed>) = 4 [pid 530] close(3) = 0 [pid 530] write(1, "executing program\n", 18 [pid 524] ioctl(4, LOOP_SET_FD, 3 [pid 530] <... write resumed>) = 18 executing program [pid 528] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 528] close(4) = 0 [pid 524] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 528] close(3 [pid 524] ioctl(4, LOOP_CLR_FD) = 0 [pid 526] <... write resumed>) = 1048576 [pid 526] munmap(0x7f5cca900000, 138412032) = 0 [pid 526] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 524] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 524] close(4 [pid 526] <... openat resumed>) = 4 [pid 524] <... close resumed>) = 0 [pid 526] ioctl(4, LOOP_SET_FD, 3 [pid 524] close(3 [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 528] <... close resumed>) = 0 [pid 530] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 530] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 530] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 530] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 530] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 530] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 528] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = 0 [pid 527] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... close resumed>) = 0 [pid 527] <... futex resumed>) = 0 [pid 527] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] <... futex resumed>) = 1 [pid 528] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 524] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] ioctl(4, LOOP_CLR_FD [pid 528] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 528] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = 0 [pid 527] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] <... futex resumed>) = 1 [pid 528] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 526] <... ioctl resumed>) = 0 [pid 524] <... futex resumed>) = 1 [pid 524] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = 0 [pid 521] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 521] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... clone3 resumed> => {parent_tid=[532]}, 88) = 532 [pid 530] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 530] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 524] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 530] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 528] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = 0 [pid 527] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] <... futex resumed>) = 1 [pid 528] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 528] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = 0 [pid 527] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 528] <... futex resumed>) = 1 [pid 528] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 528] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = 0 [pid 527] exit_group(0) = ? [pid 524] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 521] <... futex resumed>) = 0 [pid 521] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 521] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] <... futex resumed>) = ? [pid 524] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 524] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 521] <... futex resumed>) = 0 [pid 524] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] <... futex resumed>) = 0 [pid 524] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 521] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 524] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 521] <... futex resumed>) = 0 [pid 524] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] <... futex resumed>) = 0 [pid 526] ioctl(4, LOOP_SET_FD, 3 [pid 524] read(-1 [pid 521] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 524] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 524] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] close(4 [pid 524] <... futex resumed>) = 1 [pid 521] <... futex resumed>) = 0 [pid 526] <... close resumed>) = 0 [pid 524] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] exit_group(0 [pid 526] close(3 [pid 524] <... futex resumed>) = ? [pid 521] <... exit_group resumed>) = ? [pid 524] +++ exited with 0 +++ [pid 521] +++ exited with 0 +++ [pid 528] +++ exited with 0 +++ [pid 527] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=521, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=527, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ci2-android-6-1/strace-static-x86_64: Process 531 attached [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 531] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 531] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 531] memfd_create("syzkaller", 0) = 3 [pid 531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 531] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 531] <... write resumed>) = 1048576 [pid 531] munmap(0x7f5cca900000, 138412032) = 0 [pid 531] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 531] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 531] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 533 attached [pid 533] set_robust_list(0x55555618f760, 24 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 533 [pid 533] <... set_robust_list resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 534 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 533] setpgid(0, 0) = 0 [pid 533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 533] write(3, "1000", 4) = 4 [pid 531] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 531] close(4) = 0 [pid 531] close(3) = 0 [pid 533] close(3 [pid 531] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 533] <... close resumed>) = 0 [pid 531] <... futex resumed>) = 1 [pid 531] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 533] write(1, "executing program\n", 18) = 18 [pid 533] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] <... futex resumed>) = 1 [pid 533] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 531] truncate("./file1", 36262 [pid 533] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 531] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 533] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 533] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 531] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] <... futex resumed>) = 1 [pid 531] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 533] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 531] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 531] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... mprotect resumed>) = 0 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] <... futex resumed>) = 1 [pid 531] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 531] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 0 executing program [pid 529] exit_group(0) = ? [pid 531] <... futex resumed>) = ? [pid 533] rt_sigprocmask(SIG_BLOCK, ~[] [pid 531] +++ exited with 0 +++ [pid 529] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=529, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 533] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 533] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 526] <... close resumed>) = 0 [pid 533] <... clone3 resumed> => {parent_tid=[535]}, 88) = 535 ci2-android-6-1/strace-static-x86_64: Process 532 attached [pid 526] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 533] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 526] <... futex resumed>) = 1 [pid 523] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 534 attached [pid 523] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 534] set_robust_list(0x55555618f760, 24 [pid 523] <... futex resumed>) = 0 [pid 526] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 523] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] set_robust_list(0x7f5cd2d209a0, 24 [pid 526] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... set_robust_list resumed>) = 0 [pid 526] <... futex resumed>) = 0 [pid 532] <... set_robust_list resumed>) = 0 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 534] rt_sigprocmask(SIG_SETMASK, [] [pid 526] truncate("./file1", 36262 [pid 523] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 534] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 523] <... futex resumed>) = 0 [pid 532] rt_sigprocmask(SIG_SETMASK, [] [pid 526] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 534] <... prctl resumed>) = 0 [pid 534] setpgid(0, 0) = 0 [pid 526] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] <... futex resumed>) = 0 [pid 532] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 523] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 523] <... futex resumed>) = 0 [pid 534] <... openat resumed>) = 3 [pid 534] write(3, "1000", 4) = 4 [pid 523] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 534] close(3) = 0 [pid 526] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] memfd_create("syzkaller", 0 [pid 526] <... futex resumed>) = 1 [pid 523] <... futex resumed>) = 0 [pid 534] write(1, "executing program\n", 18 [pid 526] read(-1 [pid 523] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... memfd_create resumed>) = 3 [pid 523] <... futex resumed>) = 0 [pid 526] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 523] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 534] <... write resumed>) = 18 [pid 523] exit_group(0 [pid 526] <... futex resumed>) = ? [pid 523] <... exit_group resumed>) = ? [pid 532] <... mmap resumed>) = 0x7f5cca900000 [pid 534] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 534] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 534] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 534] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 526] +++ exited with 0 +++ [pid 523] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=523, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 534] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program [pid 534] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[536]}, 88) = 536 [pid 534] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 534] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 534] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 535 attached [pid 535] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 535] memfd_create("syzkaller", 0) = 3 [pid 535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 537 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 532] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 538 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 535] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 537 attached [pid 537] set_robust_list(0x55555618f760, 24) = 0 [pid 537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 537] setpgid(0, 0) = 0 [pid 537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 537] write(3, "1000", 4) = 4 [pid 537] close(3) = 0 executing program [pid 537] write(1, "executing program\n", 18) = 18 [pid 537] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 537] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 537] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 537] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 537] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 537] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 537] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 535] munmap(0x7f5cca900000, 138412032) = 0 [pid 537] <... clone3 resumed> => {parent_tid=[539]}, 88) = 539 [pid 537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 537] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 538 attached [pid 532] <... write resumed>) = 1048576 [pid 537] <... futex resumed>) = 0 [pid 537] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 535] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 535] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 535] ioctl(4, LOOP_CLR_FD) = 0 [pid 532] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 539 attached [pid 539] set_robust_list(0x7f5cd2d209a0, 24 [pid 538] set_robust_list(0x55555618f760, 24 [pid 532] <... munmap resumed>) = 0 [pid 532] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 538] <... set_robust_list resumed>) = 0 [pid 539] <... set_robust_list resumed>) = 0 [pid 539] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 539] memfd_create("syzkaller", 0) = 3 [pid 539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 532] <... openat resumed>) = 4 [pid 535] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 535] close(4) = 0 [pid 532] ioctl(4, LOOP_SET_FD, 3 [pid 538] rt_sigprocmask(SIG_SETMASK, [] [pid 535] close(3 [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 538] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 532] ioctl(4, LOOP_CLR_FD [pid 538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 532] <... ioctl resumed>) = 0 [pid 538] setpgid(0, 0ci2-android-6-1/strace-static-x86_64: Process 536 attached ) = 0 [pid 538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 536] set_robust_list(0x7f5cd2d209a0, 24 [pid 538] write(3, "1000", 4 [pid 536] <... set_robust_list resumed>) = 0 [pid 538] <... write resumed>) = 4 [pid 536] rt_sigprocmask(SIG_SETMASK, [] [pid 532] ioctl(4, LOOP_SET_FD, 3 [pid 538] close(3 [pid 535] <... close resumed>) = 0 [pid 536] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 533] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 535] <... futex resumed>) = 1 [pid 532] close(4 [pid 535] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 532] <... close resumed>) = 0 [pid 535] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 533] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 538] <... close resumed>) = 0 [pid 536] memfd_create("syzkaller", 0 [pid 532] close(3 [pid 535] <... futex resumed>) = 1 [pid 535] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 535] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 533] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 535] <... futex resumed>) = 1 [pid 535] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 535] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 533] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 535] <... futex resumed>) = 1 [pid 535] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 535] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 533] exit_group(0) = ? [pid 535] <... futex resumed>) = ? [pid 535] +++ exited with 0 +++ [pid 533] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=533, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 538] write(1, "executing program\n", 18) = 18 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 540 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 538] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 538] <... futex resumed>) = 0 [pid 532] <... close resumed>) = 0 executing program [pid 538] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 536] <... memfd_create resumed>) = 3 [pid 538] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 532] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 536] <... mmap resumed>) = 0x7f5cca900000 [pid 538] <... mmap resumed>) = 0x7f5cd2d00000 [pid 538] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 539] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 540 attached [pid 540] set_robust_list(0x55555618f760, 24) = 0 [pid 538] <... mprotect resumed>) = 0 [pid 538] rt_sigprocmask(SIG_BLOCK, ~[] [pid 540] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 540] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 538] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 532] <... futex resumed>) = 1 [pid 538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 530] <... futex resumed>) = 0 [pid 530] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 530] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] <... prctl resumed>) = 0 [pid 540] setpgid(0, 0) = 0 [pid 540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 532] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 538] <... clone3 resumed> => {parent_tid=[541]}, 88) = 541 [pid 540] <... openat resumed>) = 3 [pid 538] rt_sigprocmask(SIG_SETMASK, [] [pid 532] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 538] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 538] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] write(3, "1000", 4) = 4 [pid 540] close(3) = 0 [pid 538] <... futex resumed>) = 0 [pid 530] <... futex resumed>) = 0 [pid 532] <... futex resumed>) = 1 [pid 530] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 532] truncate("./file1", 36262 [pid 530] <... futex resumed>) = 0 [pid 540] write(1, "executing program\n", 18 [pid 530] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 540] <... write resumed>) = 18 executing program [pid 540] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 540] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 532] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 540] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 540] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 540] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 540] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 536] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 530] <... futex resumed>) = 0 [pid 532] <... futex resumed>) = 1 [pid 530] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... clone3 resumed> => {parent_tid=[542]}, 88) = 542 [pid 530] <... futex resumed>) = 0 [pid 532] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 530] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] rt_sigprocmask(SIG_SETMASK, [] [pid 532] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 540] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 540] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 540] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 532] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... futex resumed>) = 0 [pid 532] <... futex resumed>) = 1 [pid 530] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 532] read(-1 [pid 530] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 532] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 530] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 541 attached [pid 530] exit_group(0 [pid 532] ???() = ? [pid 530] <... exit_group resumed>) = ? [pid 541] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 541] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 541] memfd_create("syzkaller", 0) = 3 [pid 541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 532] +++ exited with 0 +++ [pid 530] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=530, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 539] <... write resumed>) = 1048576 [pid 539] munmap(0x7f5cca900000, 138412032) = 0 ci2-android-6-1/strace-static-x86_64: Process 542 attached [pid 542] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 542] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 542] memfd_create("syzkaller", 0 [pid 539] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 542] <... memfd_create resumed>) = 3 [pid 539] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 539] ioctl(4, LOOP_CLR_FD) = 0 [pid 542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 543 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 539] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 539] close(4) = 0 [pid 539] close(3) = 0 [pid 541] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 542] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 539] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] <... futex resumed>) = 0 [pid 537] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 537] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... futex resumed>) = 1 [pid 539] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 539] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] <... futex resumed>) = 0 [pid 537] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 537] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... futex resumed>) = 1 [pid 539] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 539] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] <... futex resumed>) = 0 [pid 537] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 537] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... futex resumed>) = 1 [pid 539] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 539] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] <... futex resumed>) = 0 [pid 537] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 537] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... futex resumed>) = 1 [pid 539] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 539] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] <... futex resumed>) = 0 [pid 537] exit_group(0) = ? [pid 536] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 543 attached [pid 539] <... futex resumed>) = ? [pid 536] munmap(0x7f5cca900000, 138412032 [pid 543] set_robust_list(0x55555618f760, 24 [pid 536] <... munmap resumed>) = 0 [pid 543] <... set_robust_list resumed>) = 0 [pid 536] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 543] rt_sigprocmask(SIG_SETMASK, [] [pid 539] +++ exited with 0 +++ [pid 537] +++ exited with 0 +++ [pid 543] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 536] <... openat resumed>) = 4 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=537, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 536] ioctl(4, LOOP_SET_FD, 3 [pid 543] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 543] <... prctl resumed>) = 0 [pid 536] ioctl(4, LOOP_CLR_FD [pid 543] setpgid(0, 0 [pid 536] <... ioctl resumed>) = 0 [pid 543] <... setpgid resumed>) = 0 [pid 543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 543] write(3, "1000", 4) = 4 [pid 543] close(3) = 0 [pid 543] write(1, "executing program\n", 18) = 18 executing program [pid 543] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 536] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 543] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 536] close(4 [pid 543] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 543] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 536] <... close resumed>) = 0 [pid 536] close(3 [pid 543] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 543] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 536] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 544 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 543] <... mmap resumed>) = 0x7f5cd2d00000 [pid 536] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 536] <... futex resumed>) = 1 [pid 534] <... futex resumed>) = 0 [pid 543] rt_sigprocmask(SIG_BLOCK, ~[] [pid 534] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 536] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 534] <... futex resumed>) = 0 [pid 534] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 543] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 536] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 543] <... clone3 resumed> => {parent_tid=[545]}, 88) = 545 [pid 536] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... write resumed>) = 1048576 [pid 541] munmap(0x7f5cca900000, 138412032) = 0 [pid 541] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 541] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 541] ioctl(4, LOOP_CLR_FD) = 0 [pid 542] <... write resumed>) = 1048576 [pid 542] munmap(0x7f5cca900000, 138412032) = 0 [pid 542] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 541] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 541] close(4) = 0 [pid 541] close(3 [pid 543] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 536] <... futex resumed>) = 1 [pid 534] <... futex resumed>) = 0 [pid 534] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 534] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 543] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] truncate("./file1", 36262ci2-android-6-1/strace-static-x86_64: Process 544 attached [pid 543] <... futex resumed>) = 0 [pid 536] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 542] <... openat resumed>) = 4 [pid 542] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 542] ioctl(4, LOOP_CLR_FD) = 0 [pid 543] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 536] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] set_robust_list(0x55555618f760, 24) = 0 [pid 536] <... futex resumed>) = 1 [pid 534] <... futex resumed>) = 0 [pid 534] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 534] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 545 attached [pid 545] set_robust_list(0x7f5cd2d209a0, 24 [pid 536] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 545] <... set_robust_list resumed>) = 0 [pid 545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 545] memfd_create("syzkaller", 0 [pid 536] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 542] close(4 [pid 536] <... futex resumed>) = 1 [pid 534] <... futex resumed>) = 0 [pid 536] read(-1 [pid 534] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 536] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 534] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] <... close resumed>) = 0 [pid 544] rt_sigprocmask(SIG_SETMASK, [] [pid 536] <... futex resumed>) = 1 [pid 534] <... futex resumed>) = 0 [pid 534] exit_group(0) = ? [pid 544] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 542] close(3 [pid 536] +++ exited with 0 +++ [pid 534] +++ exited with 0 +++ [pid 544] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=534, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 545] <... memfd_create resumed>) = 3 [pid 544] <... prctl resumed>) = 0 [pid 545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 544] setpgid(0, 0 [pid 541] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 541] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 541] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 538] <... futex resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 538] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 541] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 309] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 541] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 541] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 541] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 546 [pid 538] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 538] <... futex resumed>) = 1 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 538] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] <... futex resumed>) = 0 [pid 541] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 541] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] <... futex resumed>) = 0 [pid 544] <... setpgid resumed>) = 0 [pid 538] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] <... futex resumed>) = 1 [pid 541] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 541] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 541] <... futex resumed>) = 1 [pid 541] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 541] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] <... futex resumed>) = 0 [pid 544] <... openat resumed>) = 3 [pid 538] exit_group(0 [pid 544] write(3, "1000", 4 [pid 538] <... exit_group resumed>) = ? [pid 544] <... write resumed>) = 4 [pid 541] <... futex resumed>) = ? [pid 544] close(3) = 0 [pid 541] +++ exited with 0 +++ [pid 538] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=538, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 546 attached [pid 545] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 executing program [pid 544] write(1, "executing program\n", 18 [pid 546] set_robust_list(0x55555618f760, 24 [pid 544] <... write resumed>) = 18 [pid 542] <... close resumed>) = 0 [pid 542] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... futex resumed>) = 0 [pid 540] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 540] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... futex resumed>) = 1 [pid 542] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 544] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 544] <... futex resumed>) = 0 [pid 542] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... futex resumed>) = 0 [pid 540] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 540] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... futex resumed>) = 1 [pid 542] truncate("./file1", 36262 [pid 546] <... set_robust_list resumed>) = 0 [pid 544] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 546] rt_sigprocmask(SIG_SETMASK, [] [pid 544] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 544] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 542] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 544] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 542] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... mmap resumed>) = 0x7f5cd2d00000 [pid 540] <... futex resumed>) = 0 [pid 544] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 540] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] <... mprotect resumed>) = 0 [pid 540] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... futex resumed>) = 1 [pid 544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 542] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 544] <... clone3 resumed> => {parent_tid=[547]}, 88) = 547 [pid 544] rt_sigprocmask(SIG_SETMASK, [] [pid 542] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 544] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... futex resumed>) = 0 [pid 544] <... futex resumed>) = 0 [pid 540] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 540] <... futex resumed>) = 0 [pid 546] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 540] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... futex resumed>) = 1 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 546] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3 [pid 546] <... prctl resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 546] setpgid(0, 0 [pid 542] read(-1 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 548 [pid 546] <... setpgid resumed>) = 0 [pid 542] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 542] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 542] <... futex resumed>) = 1 [pid 540] <... futex resumed>) = 0 [pid 542] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 540] exit_group(0 [pid 542] <... futex resumed>) = ? [pid 540] <... exit_group resumed>) = ? [pid 546] <... openat resumed>) = 3 [pid 542] +++ exited with 0 +++ [pid 540] +++ exited with 0 +++ [pid 545] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 547 attached [pid 547] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 547] memfd_create("syzkaller", 0) = 3 [pid 547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 545] munmap(0x7f5cca900000, 138412032 [pid 546] write(3, "1000", 4 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=540, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 546] <... write resumed>) = 4 [pid 546] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 546] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 546] write(1, "executing program\n", 18 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 546] <... write resumed>) = 18 [pid 308] <... close resumed>) = 0 [pid 546] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 546] <... futex resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 545] <... munmap resumed>) = 0 [pid 545] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 545] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 545] ioctl(4, LOOP_CLR_FD) = 0 [pid 546] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 549 [pid 546] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 546] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 547] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 546] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 546] rt_sigprocmask(SIG_BLOCK, ~[] [pid 545] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 545] close(4) = 0 [pid 546] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 545] close(3 [pid 546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[550]}, 88) = 550 [pid 546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 546] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 546] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 545] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 548 attached [pid 548] set_robust_list(0x55555618f760, 24) = 0 [pid 548] rt_sigprocmask(SIG_SETMASK, [] [pid 545] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 543] <... futex resumed>) = 0 [pid 543] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 543] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 548] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 545] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 545] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 543] <... futex resumed>) = 0 [pid 545] truncate("./file1", 36262 [pid 543] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 543] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 545] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 545] <... futex resumed>) = 1 [pid 543] <... futex resumed>) = 0 [pid 545] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 543] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 543] <... futex resumed>) = 0 [pid 545] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] <... futex resumed>) = 0 [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 545] read(-1 [pid 543] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 543] <... futex resumed>) = 0 [pid 545] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] <... futex resumed>) = 0 [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 545] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] exit_group(0 [pid 545] <... futex resumed>) = ? [pid 543] <... exit_group resumed>) = ? [pid 545] +++ exited with 0 +++ [pid 543] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=543, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 548] <... prctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 549 attached [pid 549] set_robust_list(0x55555618f760, 24) = 0 [pid 549] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 549] setpgid(0, 0) = 0 [pid 549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 549] write(3, "1000", 4) = 4 [pid 549] close(3) = 0 [pid 549] write(1, "executing program\n", 18) = 18 [pid 549] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 550 attached [pid 550] set_robust_list(0x7f5cd2d209a0, 24 [pid 549] <... futex resumed>) = 0 [pid 549] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 550] <... set_robust_list resumed>) = 0 [pid 549] <... rt_sigaction resumed>, NULL, 8) = 0 executing program [pid 550] rt_sigprocmask(SIG_SETMASK, [] [pid 549] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 550] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 549] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 550] memfd_create("syzkaller", 0 [pid 549] <... mmap resumed>) = 0x7f5cd2d00000 [pid 550] <... memfd_create resumed>) = 3 [pid 548] setpgid(0, 0 [pid 549] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 550] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 549] rt_sigprocmask(SIG_BLOCK, ~[] [pid 548] <... setpgid resumed>) = 0 [pid 548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 549] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 549] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 548] <... openat resumed>) = 3 [pid 549] <... clone3 resumed> => {parent_tid=[551]}, 88) = 551 [pid 548] write(3, "1000", 4 [pid 547] <... write resumed>) = 1048576 [pid 549] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 548] <... write resumed>) = 4 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 552 [pid 548] close(3 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 549] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 548] <... close resumed>) = 0 [pid 549] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 549] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} executing program [pid 548] write(1, "executing program\n", 18 [pid 550] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 548] <... write resumed>) = 18 [pid 547] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 552 attached [pid 548] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... munmap resumed>) = 0 [pid 547] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 547] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 548] <... futex resumed>) = 0 [pid 547] ioctl(4, LOOP_CLR_FD) = 0 [pid 548] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 552] set_robust_list(0x55555618f760, 24ci2-android-6-1/strace-static-x86_64: Process 551 attached [pid 551] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 551] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 551] memfd_create("syzkaller", 0 [pid 552] <... set_robust_list resumed>) = 0 [pid 551] <... memfd_create resumed>) = 3 [pid 548] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 548] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 552] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 548] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 547] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 547] close(4) = 0 [pid 547] close(3 [pid 552] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 548] <... mmap resumed>) = 0x7f5cd2d00000 [pid 547] <... close resumed>) = 0 [pid 547] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 547] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 548] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... mprotect resumed>) = 0 [pid 544] <... futex resumed>) = 1 [pid 547] <... futex resumed>) = 0 [pid 547] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 547] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 544] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] rt_sigprocmask(SIG_BLOCK, ~[] [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 548] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 544] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 544] <... futex resumed>) = 1 [pid 544] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 547] <... futex resumed>) = 0 [pid 548] <... clone3 resumed> => {parent_tid=[553]}, 88) = 553 [pid 547] truncate("./file1", 36262 [pid 548] rt_sigprocmask(SIG_SETMASK, [] [pid 547] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 547] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = 0 [pid 548] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 544] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 547] <... futex resumed>) = 1 [pid 547] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 547] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 547] <... futex resumed>) = 1 [pid 547] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 547] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = 0 [pid 548] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] exit_group(0) = ? [pid 547] <... futex resumed>) = ? [pid 547] +++ exited with 0 +++ [pid 544] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=544, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 550] <... write resumed>) = 1048576 [pid 552] <... prctl resumed>) = 0 [pid 548] <... futex resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 548] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 552] setpgid(0, 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 554 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 552] <... setpgid resumed>) = 0 [pid 552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 552] write(3, "1000", 4) = 4 [pid 552] close(3) = 0 [pid 551] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 552] write(1, "executing program\n", 18 [pid 550] munmap(0x7f5cca900000, 138412032 [pid 552] <... write resumed>) = 18 executing program [pid 552] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 552] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 553 attached [pid 552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 550] <... munmap resumed>) = 0 [pid 552] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 553] set_robust_list(0x7f5cd2d209a0, 24 [pid 552] <... mmap resumed>) = 0x7f5cd2d00000 [pid 552] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 550] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 553] <... set_robust_list resumed>) = 0 [pid 552] rt_sigprocmask(SIG_BLOCK, ~[] [pid 550] <... openat resumed>) = 4 [pid 550] ioctl(4, LOOP_SET_FD, 3 [pid 553] rt_sigprocmask(SIG_SETMASK, [] [pid 552] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 551] <... write resumed>) = 1048576 [pid 550] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 554 attached [pid 552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 554] set_robust_list(0x55555618f760, 24) = 0 [pid 554] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 552] <... clone3 resumed> => {parent_tid=[555]}, 88) = 555 [pid 554] setpgid(0, 0) = 0 [pid 552] rt_sigprocmask(SIG_SETMASK, [] [pid 554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 552] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 554] <... openat resumed>) = 3 [pid 552] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 550] ioctl(4, LOOP_SET_FD, 3 [pid 552] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 550] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] close(4) = 0 [pid 550] close(3 [pid 554] write(3, "1000", 4) = 4 [pid 554] close(3) = 0 [pid 554] write(1, "executing program\n", 18) = 18 [pid 554] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 554] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 554] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 554] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 554] rt_sigprocmask(SIG_BLOCK, ~[] [pid 553] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 554] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 554] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[556]}, 88) = 556 ci2-android-6-1/strace-static-x86_64: Process 556 attached ci2-android-6-1/strace-static-x86_64: Process 555 attached [pid 553] memfd_create("syzkaller", 0 [pid 551] munmap(0x7f5cca900000, 138412032 [pid 550] <... close resumed>) = 0 [pid 556] set_robust_list(0x7f5cd2d209a0, 24 [pid 555] set_robust_list(0x7f5cd2d209a0, 24 [pid 554] rt_sigprocmask(SIG_SETMASK, [] [pid 551] <... munmap resumed>) = 0 [pid 550] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... set_robust_list resumed>) = 0 [pid 555] <... set_robust_list resumed>) = 0 [pid 554] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 551] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 550] <... futex resumed>) = 1 [pid 556] rt_sigprocmask(SIG_SETMASK, [] [pid 555] rt_sigprocmask(SIG_SETMASK, [] [pid 554] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... openat resumed>) = 4 [pid 550] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 555] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 554] <... futex resumed>) = 0 [pid 553] <... memfd_create resumed>) = 3 [pid 551] ioctl(4, LOOP_SET_FD, 3 [pid 546] <... futex resumed>) = 0 [pid 556] memfd_create("syzkaller", 0 [pid 555] memfd_create("syzkaller", 0 [pid 554] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 546] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 556] <... memfd_create resumed>) = 3 [pid 555] <... memfd_create resumed>) = 3 [pid 551] ioctl(4, LOOP_CLR_FD [pid 546] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 551] <... ioctl resumed>) = 0 [pid 556] <... mmap resumed>) = 0x7f5cca900000 [pid 555] <... mmap resumed>) = 0x7f5cca900000 [pid 553] <... mmap resumed>) = 0x7f5cca900000 [pid 550] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 546] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 556] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 553] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 550] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 550] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 546] <... futex resumed>) = 0 [pid 555] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 550] truncate("./file1", 36262 [pid 546] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 551] close(4) = 0 [pid 546] <... futex resumed>) = 0 [pid 550] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 551] close(3) = 0 [pid 550] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 546] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 549] <... futex resumed>) = 0 [pid 551] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 549] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 549] <... futex resumed>) = 0 [pid 551] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 549] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... futex resumed>) = 0 [pid 550] <... futex resumed>) = 0 [pid 549] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] truncate("./file1", 36262 [pid 549] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 549] <... futex resumed>) = 0 [pid 551] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 549] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... futex resumed>) = 0 [pid 549] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 549] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 549] <... futex resumed>) = 0 [pid 551] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 549] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... futex resumed>) = 0 [pid 549] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] read(-1 [pid 549] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 549] <... futex resumed>) = 0 [pid 551] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 549] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... futex resumed>) = 0 [pid 549] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 549] exit_group(0 [pid 553] <... write resumed>) = 1048576 [pid 551] <... futex resumed>) = ? [pid 550] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 549] <... exit_group resumed>) = ? [pid 546] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] munmap(0x7f5cca900000, 138412032 [pid 551] +++ exited with 0 +++ [pid 550] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 549] +++ exited with 0 +++ [pid 553] <... munmap resumed>) = 0 [pid 550] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 546] <... futex resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=549, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 553] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 550] <... futex resumed>) = 0 [pid 546] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 556] <... write resumed>) = 1048576 [pid 553] <... openat resumed>) = 4 [pid 550] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 553] ioctl(4, LOOP_SET_FD, 3 [pid 546] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 555] <... write resumed>) = 1048576 [pid 556] munmap(0x7f5cca900000, 138412032) = 0 [pid 550] <... futex resumed>) = 0 [pid 546] <... futex resumed>) = 1 [pid 308] <... openat resumed>) = 3 [pid 555] munmap(0x7f5cca900000, 138412032) = 0 [pid 553] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] read(-1 [pid 546] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] ioctl(3, LOOP_CLR_FD [pid 556] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 555] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 556] ioctl(4, LOOP_SET_FD, 3 [pid 555] <... openat resumed>) = 4 [pid 550] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 553] ioctl(4, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] ioctl(4, LOOP_CLR_FD) = 0 [pid 555] ioctl(4, LOOP_SET_FD, 3 [pid 553] <... ioctl resumed>) = 0 [pid 550] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] close(3 [pid 555] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] ioctl(4, LOOP_CLR_FD) = 0 [pid 550] <... futex resumed>) = 1 [pid 308] <... close resumed>) = 0 [pid 550] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 546] exit_group(0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 550] <... futex resumed>) = ? [pid 546] <... exit_group resumed>) = ? [pid 550] +++ exited with 0 +++ [pid 556] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 555] ioctl(4, LOOP_SET_FD, 3 [pid 556] close(4 [pid 555] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] <... close resumed>) = 0 [pid 555] close(4) = 0 [pid 556] close(3 [pid 546] +++ exited with 0 +++ [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 557 [pid 553] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=546, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 553] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 556] <... close resumed>) = 0 [pid 553] close(4 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 555] close(3) = 0 [pid 556] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 0 [pid 554] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 554] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 556] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 309] <... restart_syscall resumed>) = 0 [pid 553] <... close resumed>) = 0 [pid 552] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] close(3 [pid 556] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 555] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 556] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 0 [pid 554] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 554] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 556] truncate("./file1", 36262 [pid 555] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 556] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 0 [pid 554] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 554] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 555] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] <... futex resumed>) = 1 [pid 556] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 556] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 0 [pid 554] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 554] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 556] <... futex resumed>) = 1 [pid 556] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 556] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 0 [pid 554] exit_group(0) = ? [pid 556] <... futex resumed>) = ? [pid 556] +++ exited with 0 +++ [pid 554] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=554, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 553] <... close resumed>) = 0 [pid 552] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 553] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] <... openat resumed>) = 3 [pid 553] <... futex resumed>) = 1 [pid 552] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... futex resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 553] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] <... futex resumed>) = 1 [pid 548] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... ioctl resumed>) = 0 [pid 553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] <... futex resumed>) = 0 [pid 309] close(3 [pid 553] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 548] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... close resumed>) = 0 [pid 555] <... futex resumed>) = 0 [pid 553] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 555] truncate("./file1", 36262 [pid 553] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 555] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 553] <... futex resumed>) = 1 [pid 548] <... futex resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 553] truncate("./file1", 36262 [pid 548] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 555] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 552] <... futex resumed>) = 0 [pid 555] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 552] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 555] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 552] <... futex resumed>) = 0 [pid 555] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] <... futex resumed>) = 0 [pid 553] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 552] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 548] <... futex resumed>) = 0 [pid 555] read(-1 [pid 552] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 558 [pid 553] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 555] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 552] <... futex resumed>) = 0 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] <... futex resumed>) = 0 [pid 552] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 555] <... futex resumed>) = 0 [pid 553] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 552] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 548] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 555] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 552] exit_group(0 [pid 548] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] <... futex resumed>) = ? [pid 552] <... exit_group resumed>) = ? [pid 555] +++ exited with 0 +++ [pid 553] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] +++ exited with 0 +++ [pid 310] <... restart_syscall resumed>) = 0 [pid 553] <... futex resumed>) = 1 [pid 548] <... futex resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=552, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 553] read(-1 [pid 548] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 548] <... futex resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 553] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 553] <... futex resumed>) = 0 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 553] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 548] exit_group(0 [pid 310] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 553] <... futex resumed>) = ? [pid 548] <... exit_group resumed>) = ? [pid 310] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 307] close(3 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... close resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 553] +++ exited with 0 +++ [pid 548] +++ exited with 0 +++ [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=548, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 559 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 560 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 557 attached [pid 557] set_robust_list(0x55555618f760, 24) = 0 [pid 557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 557] setpgid(0, 0) = 0 [pid 557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 557] write(3, "1000", 4) = 4 [pid 557] close(3) = 0 [pid 557] write(1, "executing program\n", 18) = 18 [pid 557] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 557] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 557] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 557] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 560 attached [pid 560] set_robust_list(0x55555618f760, 24) = 0 executing program [pid 560] rt_sigprocmask(SIG_SETMASK, [] [pid 557] <... mmap resumed>) = 0x7f5cd2d00000 [pid 557] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 560] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 560] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 557] <... mprotect resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 558 attached [pid 557] rt_sigprocmask(SIG_BLOCK, ~[] [pid 560] <... prctl resumed>) = 0 [pid 560] setpgid(0, 0) = 0 [pid 560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 558] set_robust_list(0x55555618f760, 24 [pid 557] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 557] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 560] <... openat resumed>) = 3 [pid 558] <... set_robust_list resumed>) = 0 [pid 557] <... clone3 resumed> => {parent_tid=[561]}, 88) = 561 [pid 557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 557] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] write(3, "1000", 4 [pid 557] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 560] <... write resumed>) = 4 [pid 558] rt_sigprocmask(SIG_SETMASK, [] [pid 560] close(3) = 0 [pid 560] write(1, "executing program\n", 18) = 18 executing program [pid 560] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 559 attached [pid 558] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 560] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 559] set_robust_list(0x55555618f760, 24 [pid 560] <... mmap resumed>) = 0x7f5cd2d00000 [pid 559] <... set_robust_list resumed>) = 0 [pid 559] rt_sigprocmask(SIG_SETMASK, [] [pid 558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 560] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 558] setpgid(0, 0 [pid 559] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 559] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 558] <... setpgid resumed>) = 0 [pid 560] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 560] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 559] <... prctl resumed>) = 0 [pid 559] setpgid(0, 0) = 0 [pid 559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 560] <... clone3 resumed> => {parent_tid=[562]}, 88) = 562 [pid 560] rt_sigprocmask(SIG_SETMASK, [] [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 560] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 559] <... openat resumed>) = 3 [pid 311] <... ioctl resumed>) = 0 [pid 560] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] close(3 [pid 560] <... futex resumed>) = 0 [pid 559] write(3, "1000", 4 [pid 311] <... close resumed>) = 0 [pid 560] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 559] <... write resumed>) = 4 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 559] close(3 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 559] <... close resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 559] write(1, "executing program\n", 18 executing program [pid 558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 559] <... write resumed>) = 18 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 563 [pid 559] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 559] <... futex resumed>) = 0 [pid 558] <... openat resumed>) = 3 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 559] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 558] write(3, "1000", 4 [pid 559] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 558] <... write resumed>) = 4 [pid 559] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 558] close(3 [pid 559] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 558] <... close resumed>) = 0 [pid 559] rt_sigprocmask(SIG_BLOCK, ~[] [pid 558] write(1, "executing program\n", 18 executing program [pid 559] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 558] <... write resumed>) = 18 [pid 559] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 558] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... clone3 resumed> => {parent_tid=[564]}, 88) = 564 [pid 558] <... futex resumed>) = 0 [pid 559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 559] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 559] <... futex resumed>) = 0 [pid 558] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 559] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 558] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 562 attached [pid 562] set_robust_list(0x7f5cd2d209a0, 24 [pid 558] <... mmap resumed>) = 0x7f5cd2d00000 [pid 562] <... set_robust_list resumed>) = 0 [pid 562] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 562] memfd_create("syzkaller", 0 [pid 558] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 562] <... memfd_create resumed>) = 3 [pid 558] <... mprotect resumed>) = 0 [pid 562] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 558] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 558] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[565]}, 88) = 565 ci2-android-6-1/strace-static-x86_64: Process 564 attached [pid 558] rt_sigprocmask(SIG_SETMASK, [] [pid 564] set_robust_list(0x7f5cd2d209a0, 24 [pid 558] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 564] <... set_robust_list resumed>) = 0 [pid 564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 564] memfd_create("syzkaller", 0 [pid 558] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 558] <... futex resumed>) = 0 [pid 564] <... memfd_create resumed>) = 3 [pid 564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 558] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 565 attached ci2-android-6-1/strace-static-x86_64: Process 563 attached ci2-android-6-1/strace-static-x86_64: Process 561 attached [pid 564] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 563] set_robust_list(0x55555618f760, 24 [pid 561] set_robust_list(0x7f5cd2d209a0, 24 [pid 563] <... set_robust_list resumed>) = 0 [pid 561] <... set_robust_list resumed>) = 0 [pid 563] rt_sigprocmask(SIG_SETMASK, [] [pid 561] rt_sigprocmask(SIG_SETMASK, [] [pid 565] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 563] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 561] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 562] <... write resumed>) = 1048576 [pid 565] rt_sigprocmask(SIG_SETMASK, [] [pid 563] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 561] memfd_create("syzkaller", 0 [pid 562] munmap(0x7f5cca900000, 138412032 [pid 561] <... memfd_create resumed>) = 3 [pid 563] <... prctl resumed>) = 0 [pid 565] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 562] <... munmap resumed>) = 0 [pid 563] setpgid(0, 0 [pid 561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 562] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 562] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 562] ioctl(4, LOOP_CLR_FD [pid 564] munmap(0x7f5cca900000, 138412032 [pid 562] <... ioctl resumed>) = 0 [pid 563] <... setpgid resumed>) = 0 [pid 561] <... mmap resumed>) = 0x7f5cca900000 [pid 563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 564] <... munmap resumed>) = 0 [pid 564] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 564] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 564] ioctl(4, LOOP_CLR_FD) = 0 [pid 565] memfd_create("syzkaller", 0 [pid 563] <... openat resumed>) = 3 [pid 561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 563] write(3, "1000", 4) = 4 [pid 563] close(3 [pid 565] <... memfd_create resumed>) = 3 [pid 563] <... close resumed>) = 0 [pid 563] write(1, "executing program\n", 18 executing program [pid 565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 563] <... write resumed>) = 18 [pid 562] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 562] close(4) = 0 [pid 562] close(3 [pid 563] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] <... mmap resumed>) = 0x7f5cca900000 [pid 563] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 563] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 564] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 564] close(4) = 0 [pid 564] close(3 [pid 563] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 563] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 563] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 563] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 563] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[566]}, 88) = 566 [pid 563] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 563] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 561] <... write resumed>) = 1048576 [pid 565] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 564] <... close resumed>) = 0 [pid 562] <... close resumed>) = 0 [pid 562] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... futex resumed>) = 0 [pid 560] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 1 [pid 562] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 562] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... futex resumed>) = 0 [pid 560] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 1 [pid 562] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 562] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... futex resumed>) = 0 [pid 560] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 1 [pid 562] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 562] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... futex resumed>) = 0 [pid 560] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 1 [pid 562] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 562] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... futex resumed>) = 0 [pid 560] exit_group(0) = ? [pid 562] <... futex resumed>) = ? [pid 562] +++ exited with 0 +++ [pid 560] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=560, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 564] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 565] <... write resumed>) = 1048576 [pid 564] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 564] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 564] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 564] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 564] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 564] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 564] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 564] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] exit_group(0) = ? [pid 564] <... futex resumed>) = ? [pid 564] +++ exited with 0 +++ [pid 559] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=559, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 566 attached [pid 561] munmap(0x7f5cca900000, 138412032 [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 566] set_robust_list(0x7f5cd2d209a0, 24 [pid 561] <... munmap resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 566] <... set_robust_list resumed>) = 0 [pid 561] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 307] close(3 [pid 310] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 566] rt_sigprocmask(SIG_SETMASK, [] [pid 561] <... openat resumed>) = 4 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 568 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 569 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 561] ioctl(4, LOOP_SET_FD, 3 [pid 566] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 568 attached ci2-android-6-1/strace-static-x86_64: Process 569 attached [pid 569] set_robust_list(0x55555618f760, 24 [pid 568] set_robust_list(0x55555618f760, 24) = 0 [pid 569] <... set_robust_list resumed>) = 0 [pid 569] rt_sigprocmask(SIG_SETMASK, [] [pid 568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 569] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 568] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 569] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 568] <... prctl resumed>) = 0 [pid 569] <... prctl resumed>) = 0 [pid 569] setpgid(0, 0 [pid 568] setpgid(0, 0) = 0 [pid 568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 569] <... setpgid resumed>) = 0 [pid 569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 568] <... openat resumed>) = 3 [pid 569] <... openat resumed>) = 3 [pid 568] write(3, "1000", 4) = 4 [pid 569] write(3, "1000", 4 [pid 568] close(3 [pid 569] <... write resumed>) = 4 [pid 568] <... close resumed>) = 0 [pid 569] close(3) = 0 [pid 568] write(1, "executing program\n", 18) = 18 [pid 569] write(1, "executing program\n", 18) = 18 [pid 568] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = 0 [pid 569] <... futex resumed>) = 0 executing program executing program [pid 568] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 569] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 568] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 569] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 568] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 569] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 568] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 569] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 569] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 568] <... mmap resumed>) = 0x7f5cd2d00000 [pid 569] <... mmap resumed>) = 0x7f5cd2d00000 [pid 569] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 568] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 566] memfd_create("syzkaller", 0 [pid 561] ioctl(4, LOOP_CLR_FD [pid 568] <... mprotect resumed>) = 0 [pid 561] <... ioctl resumed>) = 0 [pid 566] <... memfd_create resumed>) = 3 [pid 566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 565] munmap(0x7f5cca900000, 138412032 [pid 569] rt_sigprocmask(SIG_BLOCK, ~[] [pid 568] rt_sigprocmask(SIG_BLOCK, ~[] [pid 566] <... mmap resumed>) = 0x7f5cca900000 [pid 568] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 569] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 569] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[571]}, 88) = 571 [pid 568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 568] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... clone3 resumed> => {parent_tid=[570]}, 88) = 570 [pid 569] rt_sigprocmask(SIG_SETMASK, [] [pid 568] <... futex resumed>) = 0 [pid 569] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 561] ioctl(4, LOOP_SET_FD, 3 [pid 568] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 561] close(4 [pid 569] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] <... close resumed>) = 0 [pid 569] <... futex resumed>) = 0 [pid 569] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 561] close(3 [pid 565] <... munmap resumed>) = 0 [pid 561] <... close resumed>) = 0 [pid 565] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 561] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 565] ioctl(4, LOOP_SET_FD, 3 [pid 561] <... futex resumed>) = 1 [pid 557] <... futex resumed>) = 0 [pid 557] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 557] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 571 attached [pid 565] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 561] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025ci2-android-6-1/strace-static-x86_64: Process 570 attached [pid 570] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 570] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 570] memfd_create("syzkaller", 0) = 3 [pid 565] ioctl(4, LOOP_CLR_FD [pid 570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 561] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 565] <... ioctl resumed>) = 0 [pid 561] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] set_robust_list(0x7f5cd2d209a0, 24 [pid 561] <... futex resumed>) = 1 [pid 557] <... futex resumed>) = 0 [pid 561] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 557] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 557] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 561] truncate("./file1", 36262 [pid 570] <... mmap resumed>) = 0x7f5cca900000 [pid 571] <... set_robust_list resumed>) = 0 [pid 561] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 565] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 561] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] rt_sigprocmask(SIG_SETMASK, [] [pid 565] close(4) = 0 [pid 557] <... futex resumed>) = 0 [pid 571] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 565] close(3 [pid 561] <... futex resumed>) = 1 [pid 557] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 557] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 565] <... close resumed>) = 0 [pid 561] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 571] memfd_create("syzkaller", 0 [pid 561] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 571] <... memfd_create resumed>) = 3 [pid 561] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 557] <... futex resumed>) = 0 [pid 571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 565] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 557] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 557] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] <... mmap resumed>) = 0x7f5cca900000 [pid 565] <... futex resumed>) = 1 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 558] <... futex resumed>) = 0 [pid 561] read(-1 [pid 558] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 558] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 561] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 565] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 561] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 565] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 557] <... futex resumed>) = 0 [pid 561] <... futex resumed>) = 1 [pid 565] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] exit_group(0 [pid 561] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] <... futex resumed>) = 1 [pid 561] <... futex resumed>) = ? [pid 558] <... futex resumed>) = 0 [pid 557] <... exit_group resumed>) = ? [pid 558] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 558] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 565] truncate("./file1", 36262 [pid 561] +++ exited with 0 +++ [pid 557] +++ exited with 0 +++ [pid 565] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=557, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 565] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 565] <... futex resumed>) = 1 [pid 558] <... futex resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 565] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 558] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... ioctl resumed>) = 0 [pid 558] <... futex resumed>) = 0 [pid 565] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 558] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] close(3 [pid 565] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... close resumed>) = 0 [pid 565] <... futex resumed>) = 1 [pid 558] <... futex resumed>) = 0 [pid 565] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 558] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 565] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 558] <... futex resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 565] read(-1 [pid 558] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 565] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 565] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 572 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 570] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 565] <... futex resumed>) = 1 [pid 558] <... futex resumed>) = 0 [pid 558] exit_group(0) = ? [pid 565] +++ exited with 0 +++ [pid 558] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=558, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 566] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 572 attached [pid 566] munmap(0x7f5cca900000, 138412032 [pid 572] set_robust_list(0x55555618f760, 24 [pid 566] <... munmap resumed>) = 0 [pid 572] <... set_robust_list resumed>) = 0 [pid 570] <... write resumed>) = 1048576 [pid 566] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 572] rt_sigprocmask(SIG_SETMASK, [] [pid 566] <... openat resumed>) = 4 [pid 572] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 571] <... write resumed>) = 1048576 [pid 566] ioctl(4, LOOP_SET_FD, 3 [pid 572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 571] munmap(0x7f5cca900000, 138412032 [pid 566] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] ioctl(4, LOOP_CLR_FD [pid 572] setpgid(0, 0 [pid 566] <... ioctl resumed>) = 0 [pid 572] <... setpgid resumed>) = 0 [pid 572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 571] <... munmap resumed>) = 0 [pid 572] write(3, "1000", 4 [pid 571] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 572] <... write resumed>) = 4 [pid 571] <... openat resumed>) = 4 [pid 572] close(3 [pid 309] <... restart_syscall resumed>) = 0 [pid 572] <... close resumed>) = 0 [pid 566] ioctl(4, LOOP_SET_FD, 3 [pid 572] write(1, "executing program\n", 18 [pid 566] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] munmap(0x7f5cca900000, 138412032 [pid 571] ioctl(4, LOOP_SET_FD, 3 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 572] <... write resumed>) = 18 [pid 566] close(4 [pid 309] <... openat resumed>) = 3 [pid 566] <... close resumed>) = 0 executing program [pid 572] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 572] <... futex resumed>) = 0 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 570] <... munmap resumed>) = 0 [pid 572] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 570] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 570] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 570] ioctl(4, LOOP_CLR_FD) = 0 [pid 566] <... close resumed>) = 0 [pid 309] close(3 [pid 572] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 309] <... close resumed>) = 0 [pid 570] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 570] close(4) = 0 [pid 570] close(3 [pid 572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 572] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 571] ioctl(4, LOOP_CLR_FD [pid 566] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 571] <... ioctl resumed>) = 0 [pid 566] <... futex resumed>) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] <... mmap resumed>) = 0x7f5cd2d00000 [pid 563] <... futex resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 573 [pid 572] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 566] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 563] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 572] <... mprotect resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 566] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 572] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 566] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 566] <... futex resumed>) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 572] <... clone3 resumed> => {parent_tid=[574]}, 88) = 574 [pid 571] ioctl(4, LOOP_SET_FD, 3 [pid 566] truncate("./file1", 36262 [pid 563] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 572] rt_sigprocmask(SIG_SETMASK, [] [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 572] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 571] close(4 [pid 566] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... close resumed>) = 0 [pid 566] <... futex resumed>) = 1 [pid 563] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 574 attached ci2-android-6-1/strace-static-x86_64: Process 573 attached [pid 572] <... futex resumed>) = 0 [pid 571] close(3 [pid 566] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 563] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 574] set_robust_list(0x7f5cd2d209a0, 24 [pid 573] set_robust_list(0x55555618f760, 24 [pid 571] <... close resumed>) = 0 [pid 566] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 563] <... futex resumed>) = 0 [pid 574] <... set_robust_list resumed>) = 0 [pid 573] <... set_robust_list resumed>) = 0 [pid 571] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] rt_sigprocmask(SIG_SETMASK, [] [pid 566] <... futex resumed>) = 0 [pid 563] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 574] rt_sigprocmask(SIG_SETMASK, [] [pid 571] <... futex resumed>) = 1 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 573] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 570] <... close resumed>) = 0 [pid 571] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 566] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 563] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] memfd_create("syzkaller", 0 [pid 569] <... futex resumed>) = 0 [pid 573] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 569] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 569] <... futex resumed>) = 0 [pid 566] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 563] <... futex resumed>) = 0 [pid 574] <... memfd_create resumed>) = 3 [pid 573] <... prctl resumed>) = 0 [pid 571] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 566] read(-1 [pid 570] <... futex resumed>) = 1 [pid 570] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 566] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 563] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 573] setpgid(0, 0 [pid 571] <... futex resumed>) = 1 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... futex resumed>) = 0 [pid 569] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 566] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... mmap resumed>) = 0x7f5cca900000 [pid 573] <... setpgid resumed>) = 0 [pid 571] truncate("./file1", 36262 [pid 569] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 566] <... futex resumed>) = 1 [pid 570] <... futex resumed>) = 1 [pid 570] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 574] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 570] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 566] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 563] <... futex resumed>) = 0 [pid 569] <... futex resumed>) = 0 [pid 569] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 569] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... futex resumed>) = 1 [pid 570] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 570] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... futex resumed>) = 0 [pid 569] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 569] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... futex resumed>) = 1 [pid 570] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 570] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... futex resumed>) = 0 [pid 569] exit_group(0 [pid 573] <... openat resumed>) = 3 [pid 571] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... exit_group resumed>) = ? [pid 563] exit_group(0 [pid 573] write(3, "1000", 4 [pid 571] <... futex resumed>) = 1 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... futex resumed>) = ? [pid 568] <... futex resumed>) = 0 [pid 573] <... write resumed>) = 4 [pid 570] +++ exited with 0 +++ [pid 571] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 569] +++ exited with 0 +++ [pid 568] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 566] <... futex resumed>) = ? [pid 563] <... exit_group resumed>) = ? [pid 573] close(3 [pid 571] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 566] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=569, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 574] <... write resumed>) = 1048576 [pid 573] <... close resumed>) = 0 [pid 571] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] +++ exited with 0 +++ [pid 307] <... restart_syscall resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=563, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 574] munmap(0x7f5cca900000, 138412032 [pid 573] write(1, "executing program\n", 18 [pid 571] <... futex resumed>) = 1 [pid 568] <... futex resumed>) = 0 executing program [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 574] <... munmap resumed>) = 0 [pid 573] <... write resumed>) = 18 [pid 571] read(-1 [pid 568] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... openat resumed>) = 3 [pid 574] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 573] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 568] <... futex resumed>) = 0 [pid 311] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 568] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] ioctl(3, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 574] <... openat resumed>) = 4 [pid 573] <... futex resumed>) = 0 [pid 571] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 574] ioctl(4, LOOP_SET_FD, 3 [pid 573] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 571] <... futex resumed>) = 1 [pid 568] <... futex resumed>) = 0 [pid 311] close(3 [pid 307] <... close resumed>) = 0 [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 573] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 571] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 568] exit_group(0 [pid 311] <... close resumed>) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 568] <... exit_group resumed>) = ? [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 574] ioctl(4, LOOP_CLR_FD [pid 573] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 571] <... futex resumed>) = ? [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 574] <... ioctl resumed>) = 0 [pid 573] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 573] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 571] +++ exited with 0 +++ [pid 568] +++ exited with 0 +++ [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 575 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 576 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=568, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 573] <... mmap resumed>) = 0x7f5cd2d00000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 573] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITEci2-android-6-1/strace-static-x86_64: Process 575 attached [pid 575] set_robust_list(0x55555618f760, 24) = 0 [pid 575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 573] <... mprotect resumed>) = 0 [pid 575] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 574] ioctl(4, LOOP_SET_FD, 3 [pid 573] rt_sigprocmask(SIG_BLOCK, ~[] [pid 575] <... prctl resumed>) = 0 [pid 575] setpgid(0, 0) = 0 [pid 575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 573] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 575] <... openat resumed>) = 3 [pid 574] close(4 [pid 573] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 575] write(3, "1000", 4) = 4 [pid 575] close(3) = 0 [pid 575] write(1, "executing program\n", 18) = 18 [pid 574] <... close resumed>) = 0 executing program [pid 575] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] close(3 [pid 575] <... futex resumed>) = 0 [pid 575] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 575] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 575] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 575] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 575] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 575] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[578]}, 88) = 578 [pid 575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 575] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 575] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 574] <... close resumed>) = 0 [pid 573] <... clone3 resumed> => {parent_tid=[577]}, 88) = 577 [pid 573] rt_sigprocmask(SIG_SETMASK, [] [pid 574] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 573] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 572] <... futex resumed>) = 0 [pid 572] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 572] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 574] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 572] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] truncate("./file1", 36262 [pid 572] <... futex resumed>) = 0 [pid 572] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 574] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 577 attached [pid 577] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 577] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 577] memfd_create("syzkaller", 0) = 3 [pid 577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 574] <... futex resumed>) = 1 [pid 572] <... futex resumed>) = 0 [pid 572] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 572] <... futex resumed>) = 0 [pid 574] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 572] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 572] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] read(-1 [pid 572] <... futex resumed>) = 0 [pid 572] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 574] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 572] exit_group(0 [pid 574] <... futex resumed>) = ? [pid 572] <... exit_group resumed>) = ? [pid 310] <... restart_syscall resumed>) = 0 [pid 574] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 572] +++ exited with 0 +++ [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=572, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 579 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 579 attached ci2-android-6-1/strace-static-x86_64: Process 578 attached ci2-android-6-1/strace-static-x86_64: Process 576 attached [pid 308] <... restart_syscall resumed>) = 0 [pid 579] set_robust_list(0x55555618f760, 24 [pid 578] set_robust_list(0x7f5cd2d209a0, 24 [pid 577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 576] set_robust_list(0x55555618f760, 24 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 576] <... set_robust_list resumed>) = 0 [pid 579] <... set_robust_list resumed>) = 0 [pid 578] <... set_robust_list resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 576] rt_sigprocmask(SIG_SETMASK, [] [pid 308] ioctl(3, LOOP_CLR_FD [pid 579] rt_sigprocmask(SIG_SETMASK, [] [pid 578] rt_sigprocmask(SIG_SETMASK, [] [pid 579] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 578] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 576] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 576] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 576] <... prctl resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 576] setpgid(0, 0 [pid 579] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 580 [pid 576] <... setpgid resumed>) = 0 [pid 579] <... prctl resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 579] setpgid(0, 0 [pid 576] <... openat resumed>) = 3 [pid 578] memfd_create("syzkaller", 0 [pid 579] <... setpgid resumed>) = 0 [pid 578] <... memfd_create resumed>) = 3 [pid 576] write(3, "1000", 4 [pid 579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 576] <... write resumed>) = 4 [pid 576] close(3 [pid 579] <... openat resumed>) = 3 [pid 576] <... close resumed>) = 0 [pid 579] write(3, "1000", 4 [pid 578] <... mmap resumed>) = 0x7f5cca900000 [pid 576] write(1, "executing program\n", 18) = 18 executing program [pid 576] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... write resumed>) = 4 [pid 578] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 576] <... futex resumed>) = 0 [pid 579] close(3 [pid 576] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 579] <... close resumed>) = 0 [pid 576] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 579] write(1, "executing program\n", 18ci2-android-6-1/strace-static-x86_64: Process 580 attached [pid 580] set_robust_list(0x55555618f760, 24) = 0 [pid 576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 579] <... write resumed>) = 18 executing program [pid 576] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 579] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 579] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 580] rt_sigprocmask(SIG_SETMASK, [] [pid 579] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 576] <... mmap resumed>) = 0x7f5cd2d00000 [pid 580] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 580] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 576] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 579] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 580] <... prctl resumed>) = 0 [pid 580] setpgid(0, 0) = 0 [pid 580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 576] <... mprotect resumed>) = 0 [pid 579] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 580] <... openat resumed>) = 3 [pid 580] write(3, "1000", 4 [pid 579] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 576] rt_sigprocmask(SIG_BLOCK, ~[] [pid 580] <... write resumed>) = 4 [pid 580] close(3) = 0 [pid 580] write(1, "executing program\n", 18) = 18 [pid 580] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] <... rt_sigprocmask resumed>, [], 8) = 0 executing program [pid 579] <... mmap resumed>) = 0x7f5cd2d00000 [pid 580] <... futex resumed>) = 0 [pid 580] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 580] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 579] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 579] <... mprotect resumed>) = 0 [pid 580] rt_sigprocmask(SIG_BLOCK, ~[] [pid 579] rt_sigprocmask(SIG_BLOCK, ~[] [pid 576] <... clone3 resumed> => {parent_tid=[581]}, 88) = 581 [pid 579] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 576] rt_sigprocmask(SIG_SETMASK, [] [pid 579] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 576] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 576] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... clone3 resumed> => {parent_tid=[582]}, 88) = 582 [pid 576] <... futex resumed>) = 0 [pid 580] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 579] rt_sigprocmask(SIG_SETMASK, [] [pid 576] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 579] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 579] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[583]}, 88) = 583 [pid 580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 580] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 581 attached [pid 581] set_robust_list(0x7f5cd2d209a0, 24ci2-android-6-1/strace-static-x86_64: Process 582 attached [pid 582] set_robust_list(0x7f5cd2d209a0, 24 [pid 581] <... set_robust_list resumed>) = 0 [pid 581] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 582] <... set_robust_list resumed>) = 0 [pid 581] memfd_create("syzkaller", 0 [pid 582] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 582] memfd_create("syzkaller", 0 [pid 581] <... memfd_create resumed>) = 3 [pid 582] <... memfd_create resumed>) = 3 [pid 581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 577] <... write resumed>) = 1048576 [pid 577] munmap(0x7f5cca900000, 138412032) = 0 [pid 577] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 577] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) ci2-android-6-1/strace-static-x86_64: Process 583 attached [pid 583] set_robust_list(0x7f5cd2d209a0, 24 [pid 577] ioctl(4, LOOP_CLR_FD [pid 583] <... set_robust_list resumed>) = 0 [pid 583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 583] memfd_create("syzkaller", 0 [pid 577] <... ioctl resumed>) = 0 [pid 578] <... write resumed>) = 1048576 [pid 578] munmap(0x7f5cca900000, 138412032) = 0 [pid 583] <... memfd_create resumed>) = 3 [pid 578] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 578] <... openat resumed>) = 4 [pid 578] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 577] ioctl(4, LOOP_SET_FD, 3 [pid 578] ioctl(4, LOOP_CLR_FD) = 0 [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 577] close(4 [pid 582] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 577] <... close resumed>) = 0 [pid 578] ioctl(4, LOOP_SET_FD, 3 [pid 577] close(3) = 0 [pid 578] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] close(4 [pid 577] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] <... write resumed>) = 1048576 [pid 581] <... write resumed>) = 1048576 [pid 578] <... close resumed>) = 0 [pid 577] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 581] munmap(0x7f5cca900000, 138412032 [pid 578] close(3 [pid 577] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] <... futex resumed>) = 0 [pid 578] <... close resumed>) = 0 [pid 581] <... munmap resumed>) = 0 [pid 581] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 577] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 573] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 577] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 581] <... openat resumed>) = 4 [pid 577] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 573] <... futex resumed>) = 0 [pid 582] munmap(0x7f5cca900000, 138412032 [pid 581] ioctl(4, LOOP_SET_FD, 3 [pid 578] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] truncate("./file1", 36262 [pid 581] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] <... futex resumed>) = 1 [pid 575] <... futex resumed>) = 0 [pid 575] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 0 [pid 573] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] <... munmap resumed>) = 0 [pid 581] ioctl(4, LOOP_CLR_FD [pid 578] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 577] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 582] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 577] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... ioctl resumed>) = 0 [pid 582] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 582] ioctl(4, LOOP_CLR_FD) = 0 [pid 577] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 573] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 577] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 573] <... futex resumed>) = 0 [pid 573] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 578] <... futex resumed>) = 1 [pid 577] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] <... futex resumed>) = 0 [pid 578] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 577] <... futex resumed>) = 1 [pid 575] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = 0 [pid 581] ioctl(4, LOOP_SET_FD, 3 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 577] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 581] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] truncate("./file1", 36262 [pid 577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 575] <... futex resumed>) = 0 [pid 573] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] ioctl(4, LOOP_SET_FD, 3 [pid 581] close(4 [pid 578] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 577] read(-1 [pid 575] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] <... futex resumed>) = 0 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 581] <... close resumed>) = 0 [pid 578] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] close(3 [pid 578] <... futex resumed>) = 0 [pid 577] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... close resumed>) = 0 [pid 578] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 577] <... futex resumed>) = 0 [pid 573] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 581] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 577] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 581] <... futex resumed>) = 1 [pid 578] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] <... futex resumed>) = 0 [pid 581] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 578] <... futex resumed>) = 0 [pid 576] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 578] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] <... futex resumed>) = 0 [pid 581] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 576] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 581] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 576] <... futex resumed>) = 0 [pid 581] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 576] <... futex resumed>) = 0 [pid 581] truncate("./file1", 36262 [pid 576] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] exit_group(0 [pid 578] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 1 [pid 582] close(4 [pid 581] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 578] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 577] <... futex resumed>) = ? [pid 575] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] <... exit_group resumed>) = ? [pid 581] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] +++ exited with 0 +++ [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 581] <... futex resumed>) = 1 [pid 576] <... futex resumed>) = 0 [pid 581] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] +++ exited with 0 +++ [pid 575] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] <... close resumed>) = 0 [pid 581] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 578] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 1 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=573, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 582] close(3 [pid 581] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 578] read(-1 [pid 576] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 581] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 578] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 581] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... futex resumed>) = 1 [pid 578] <... futex resumed>) = 1 [pid 576] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 0 [pid 581] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 578] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] exit_group(0 [pid 581] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 578] <... futex resumed>) = ? [pid 576] <... futex resumed>) = 0 [pid 575] <... exit_group resumed>) = ? [pid 581] read(-1 [pid 578] +++ exited with 0 +++ [pid 576] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] +++ exited with 0 +++ [pid 581] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 581] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 576] <... futex resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=575, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 581] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] exit_group(0 [pid 581] <... futex resumed>) = ? [pid 576] <... exit_group resumed>) = ? [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 581] +++ exited with 0 +++ [pid 576] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=576, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 583] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 582] <... close resumed>) = 0 [pid 582] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... write resumed>) = 1048576 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 582] <... futex resumed>) = 1 [pid 579] <... futex resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 579] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 579] <... futex resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 579] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 582] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 311] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 584 [pid 582] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 582] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 582] <... futex resumed>) = 1 [pid 579] <... futex resumed>) = 0 [pid 311] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 582] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 579] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] ioctl(3, LOOP_CLR_FD [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 579] <... futex resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 582] truncate("./file1", 36262 [pid 579] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 582] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 311] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 582] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] close(3 [pid 582] <... futex resumed>) = 1 [pid 579] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 582] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 579] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... close resumed>) = 0 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 579] <... futex resumed>) = 0 [pid 583] munmap(0x7f5cca900000, 138412032) = 0 [pid 582] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 579] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 582] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 585 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 582] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 582] <... futex resumed>) = 1 [pid 579] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 582] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 579] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 583] ioctl(4, LOOP_SET_FD, 3 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 579] <... futex resumed>) = 0 [pid 582] read(-1 [pid 579] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 586 [pid 582] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 582] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 582] <... futex resumed>) = 1 [pid 579] <... futex resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 582] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 579] exit_group(0 [pid 582] <... futex resumed>) = ? [pid 579] <... exit_group resumed>) = ? [pid 583] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 583] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 586 attached [pid 582] +++ exited with 0 +++ [pid 579] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=579, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 586] set_robust_list(0x55555618f760, 24) = 0 [pid 586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 586] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 583] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 583] close(4) = 0 [pid 583] close(3) = 0 [pid 586] <... prctl resumed>) = 0 [pid 586] setpgid(0, 0) = 0 [pid 586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 586] write(3, "1000", 4) = 4 [pid 583] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 580] <... futex resumed>) = 0 [pid 580] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 586] close(3) = 0 [pid 583] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 586] write(1, "executing program\n", 18 [pid 583] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 586] <... write resumed>) = 18 executing program [pid 586] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 580] <... futex resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 580] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 586] <... futex resumed>) = 0 [pid 586] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 583] truncate("./file1", 36262 [pid 586] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 583] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 586] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 587 [pid 586] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 583] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 580] <... futex resumed>) = 0 [pid 580] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 586] <... mmap resumed>) = 0x7f5cd2d00000 [pid 583] <... futex resumed>) = 1 [pid 583] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 583] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 580] <... futex resumed>) = 0 [pid 580] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 584 attached [pid 583] <... futex resumed>) = 1 [pid 586] <... mprotect resumed>) = 0 [pid 583] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 583] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] set_robust_list(0x55555618f760, 24 [pid 586] rt_sigprocmask(SIG_BLOCK, ~[] [pid 583] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 586] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 584] <... set_robust_list resumed>) = 0 [pid 583] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] exit_group(0 [pid 586] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 584] rt_sigprocmask(SIG_SETMASK, [] [pid 583] <... futex resumed>) = ? [pid 580] <... exit_group resumed>) = ? [pid 584] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 583] +++ exited with 0 +++ [pid 580] +++ exited with 0 +++ [pid 586] <... clone3 resumed> => {parent_tid=[588]}, 88) = 588 [pid 584] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=580, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 586] rt_sigprocmask(SIG_SETMASK, [] [pid 584] <... prctl resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 586] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 584] setpgid(0, 0 [pid 586] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... setpgid resumed>) = 0 [pid 586] <... futex resumed>) = 0 [pid 584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 586] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 584] <... openat resumed>) = 3 [pid 584] write(3, "1000", 4) = 4 [pid 584] close(3) = 0 executing program [pid 584] write(1, "executing program\n", 18) = 18 [pid 584] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 584] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 584] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 584] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 584] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[589]}, 88) = 589 [pid 584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 584] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 588 attached [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 590 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 588] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 588] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 588] memfd_create("syzkaller", 0) = 3 [pid 588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 587 attached ci2-android-6-1/strace-static-x86_64: Process 585 attached [pid 588] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 587] set_robust_list(0x55555618f760, 24 [pid 585] set_robust_list(0x55555618f760, 24 [pid 587] <... set_robust_list resumed>) = 0 [pid 585] <... set_robust_list resumed>) = 0 [pid 585] rt_sigprocmask(SIG_SETMASK, [] [pid 587] rt_sigprocmask(SIG_SETMASK, [] [pid 585] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 587] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 585] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 587] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 585] <... prctl resumed>) = 0 [pid 587] <... prctl resumed>) = 0 [pid 585] setpgid(0, 0 [pid 587] setpgid(0, 0 [pid 585] <... setpgid resumed>) = 0 [pid 587] <... setpgid resumed>) = 0 [pid 587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECci2-android-6-1/strace-static-x86_64: Process 589 attached [pid 587] <... openat resumed>) = 3 [pid 587] write(3, "1000", 4 [pid 585] <... openat resumed>) = 3 [pid 587] <... write resumed>) = 4 [pid 585] write(3, "1000", 4 [pid 587] close(3 [pid 585] <... write resumed>) = 4 [pid 587] <... close resumed>) = 0 [pid 585] close(3 [pid 587] write(1, "executing program\n", 18 [pid 585] <... close resumed>) = 0 [pid 587] <... write resumed>) = 18 executing program executing program [pid 585] write(1, "executing program\n", 18 [pid 587] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... write resumed>) = 18 [pid 587] <... futex resumed>) = 0 [pid 585] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 585] <... futex resumed>) = 0 [pid 587] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 585] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 587] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 585] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 587] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 585] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 585] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 587] <... mmap resumed>) = 0x7f5cd2d00000 [pid 585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 587] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 585] <... mmap resumed>) = 0x7f5cd2d00000 [pid 587] <... mprotect resumed>) = 0 [pid 585] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 587] rt_sigprocmask(SIG_BLOCK, ~[] [pid 585] <... mprotect resumed>) = 0 [pid 587] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 587] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 587] <... clone3 resumed> => {parent_tid=[591]}, 88) = 591 [pid 589] set_robust_list(0x7f5cd2d209a0, 24 [pid 587] rt_sigprocmask(SIG_SETMASK, [] [pid 585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 587] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 589] <... set_robust_list resumed>) = 0 [pid 587] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 585] <... clone3 resumed> => {parent_tid=[592]}, 88) = 592 [pid 587] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 585] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 590 attached [pid 589] rt_sigprocmask(SIG_SETMASK, [] [pid 585] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 590] set_robust_list(0x55555618f760, 24 [pid 589] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 585] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... set_robust_list resumed>) = 0 [pid 589] memfd_create("syzkaller", 0 [pid 585] <... futex resumed>) = 0 [pid 590] rt_sigprocmask(SIG_SETMASK, [] [pid 589] <... memfd_create resumed>) = 3 [pid 585] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 590] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 590] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 589] <... mmap resumed>) = 0x7f5cca900000 [pid 590] <... prctl resumed>) = 0 [pid 590] setpgid(0, 0) = 0 [pid 590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 590] write(3, "1000", 4 [pid 589] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 590] <... write resumed>) = 4 [pid 590] close(3) = 0 executing program [pid 590] write(1, "executing program\n", 18) = 18 [pid 590] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 ci2-android-6-1/strace-static-x86_64: Process 592 attached [pid 590] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 588] <... write resumed>) = 1048576 [pid 590] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 590] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 590] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[593]}, 88) = 593 [pid 590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 590] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 588] munmap(0x7f5cca900000, 138412032) = 0 [pid 588] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 588] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 588] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 593 attached [pid 589] <... write resumed>) = 1048576 [pid 593] set_robust_list(0x7f5cd2d209a0, 24) = 0 ci2-android-6-1/strace-static-x86_64: Process 591 attached [pid 592] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 591] set_robust_list(0x7f5cd2d209a0, 24 [pid 592] rt_sigprocmask(SIG_SETMASK, [] [pid 591] <... set_robust_list resumed>) = 0 [pid 592] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 592] memfd_create("syzkaller", 0 [pid 591] rt_sigprocmask(SIG_SETMASK, [] [pid 593] rt_sigprocmask(SIG_SETMASK, [] [pid 592] <... memfd_create resumed>) = 3 [pid 591] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 593] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 593] memfd_create("syzkaller", 0) = 3 [pid 593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 588] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 588] close(4) = 0 [pid 588] close(3) = 0 [pid 589] munmap(0x7f5cca900000, 138412032) = 0 [pid 592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 591] memfd_create("syzkaller", 0 [pid 589] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 589] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 589] ioctl(4, LOOP_CLR_FD) = 0 [pid 588] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 0 [pid 586] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 586] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] <... futex resumed>) = 1 [pid 588] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 588] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 0 [pid 586] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 586] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 589] close(4) = 0 [pid 589] close(3 [pid 591] <... memfd_create resumed>) = 3 [pid 588] <... futex resumed>) = 1 [pid 588] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 588] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 0 [pid 586] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 586] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] <... futex resumed>) = 1 [pid 588] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 588] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 0 [pid 586] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 586] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] <... futex resumed>) = 1 [pid 588] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 588] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 0 [pid 586] exit_group(0) = ? [pid 588] <... futex resumed>) = ? [pid 591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 588] +++ exited with 0 +++ [pid 586] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=586, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 591] <... mmap resumed>) = 0x7f5cca900000 [pid 593] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 589] <... close resumed>) = 0 [pid 589] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... futex resumed>) = 0 [pid 584] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 584] <... futex resumed>) = 0 [pid 584] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 1 [pid 589] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 589] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... futex resumed>) = 0 [pid 584] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 1 [pid 589] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 589] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... futex resumed>) = 0 [pid 584] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 1 [pid 589] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 589] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... futex resumed>) = 0 [pid 584] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 1 [pid 589] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 589] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... futex resumed>) = 0 [pid 584] exit_group(0) = ? [pid 589] <... futex resumed>) = ? [pid 589] +++ exited with 0 +++ [pid 584] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=584, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 593] <... write resumed>) = 1048576 [pid 592] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 593] munmap(0x7f5cca900000, 138412032) = 0 [pid 593] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 593] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 593] ioctl(4, LOOP_CLR_FD) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 594 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 595 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 593] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 593] close(4) = 0 [pid 593] close(3 [pid 592] <... write resumed>) = 1048576 [pid 593] <... close resumed>) = 0 [pid 593] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] <... futex resumed>) = 1 [pid 593] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 593] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] <... futex resumed>) = 1 [pid 593] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 593] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] <... futex resumed>) = 1 [pid 593] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 593] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] <... futex resumed>) = 1 [pid 593] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 593] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] exit_group(0) = ? [pid 593] <... futex resumed>) = ? [pid 591] <... write resumed>) = 1048576 [pid 592] munmap(0x7f5cca900000, 138412032 [pid 593] +++ exited with 0 +++ [pid 590] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=590, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 592] <... munmap resumed>) = 0 [pid 591] munmap(0x7f5cca900000, 138412032 [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 596 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 595 attached [pid 595] set_robust_list(0x55555618f760, 24) = 0 [pid 595] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 595] setpgid(0, 0) = 0 [pid 595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 595] write(3, "1000", 4) = 4 [pid 595] close(3) = 0 [pid 595] write(1, "executing program\n", 18) = 18 executing program [pid 595] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 591] <... munmap resumed>) = 0 [pid 592] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 595] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 595] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 595] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 594 attached ) = 0x7f5cd2d00000 [pid 594] set_robust_list(0x55555618f760, 24 [pid 595] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 594] <... set_robust_list resumed>) = 0 [pid 594] rt_sigprocmask(SIG_SETMASK, [] [pid 595] rt_sigprocmask(SIG_BLOCK, ~[] [pid 594] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 595] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 594] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 595] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 592] <... openat resumed>) = 4 [pid 591] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 592] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 591] <... openat resumed>) = 4 [pid 592] ioctl(4, LOOP_CLR_FD [pid 591] ioctl(4, LOOP_SET_FD, 3 [pid 592] <... ioctl resumed>) = 0 [pid 591] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 594] <... prctl resumed>) = 0 [pid 591] ioctl(4, LOOP_CLR_FD [pid 594] setpgid(0, 0 [pid 591] <... ioctl resumed>) = 0 [pid 595] <... clone3 resumed> => {parent_tid=[597]}, 88) = 597 [pid 594] <... setpgid resumed>) = 0 [pid 595] rt_sigprocmask(SIG_SETMASK, [] [pid 594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 595] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 595] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 594] <... openat resumed>) = 3 [pid 594] write(3, "1000", 4) = 4 [pid 594] close(3) = 0 [pid 594] write(1, "executing program\n", 18) = 18 [pid 594] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 594] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 594] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 594] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 594] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 594] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[598]}, 88) = 598 [pid 594] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 594] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 596 attached [pid 596] set_robust_list(0x55555618f760, 24) = 0 [pid 596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 596] setpgid(0, 0) = 0 [pid 596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 596] write(3, "1000", 4) = 4 [pid 596] close(3) = 0 [pid 596] write(1, "executing program\n", 18) = 18 executing program [pid 596] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 596] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 592] ioctl(4, LOOP_SET_FD, 3 [pid 591] ioctl(4, LOOP_SET_FD, 3 [pid 592] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 591] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 592] close(4 [pid 591] close(4 [pid 592] <... close resumed>) = 0 [pid 591] <... close resumed>) = 0 [pid 592] close(3 [pid 591] close(3 [pid 596] <... clone3 resumed> => {parent_tid=[599]}, 88) = 599 [pid 596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 596] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 597 attached [pid 597] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 592] <... close resumed>) = 0 [pid 591] <... close resumed>) = 0 [pid 592] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... futex resumed>) = 0 [pid 587] <... futex resumed>) = 0 [pid 591] <... futex resumed>) = 1 [pid 592] <... futex resumed>) = 1 [pid 591] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 587] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 587] <... futex resumed>) = 0 [pid 585] <... futex resumed>) = 0 [pid 591] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 587] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 591] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 592] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... futex resumed>) = 0 [pid 587] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... futex resumed>) = 1 [pid 591] truncate("./file1", 36262 [pid 587] <... futex resumed>) = 0 [pid 585] <... futex resumed>) = 0 [pid 592] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 587] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] <... futex resumed>) = 0 [pid 592] truncate("./file1", 36262 [pid 591] <... futex resumed>) = 0 [pid 587] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 591] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 587] <... futex resumed>) = 0 [pid 597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 592] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 587] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] memfd_create("syzkaller", 0 [pid 592] <... futex resumed>) = 1 [pid 591] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] <... futex resumed>) = 0 [pid 597] <... memfd_create resumed>) = 3 [pid 592] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... futex resumed>) = 0 [pid 587] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] read(-1 [pid 587] <... futex resumed>) = 0 [pid 585] <... futex resumed>) = 0 [pid 592] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 591] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 587] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 591] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] <... mmap resumed>) = 0x7f5cca900000 [pid 592] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... futex resumed>) = 0 [pid 587] exit_group(0 [pid 592] <... futex resumed>) = 1 [pid 585] <... futex resumed>) = 0 [pid 592] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 587] <... exit_group resumed>) = ? [pid 585] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 592] read(-1 [pid 591] +++ exited with 0 +++ [pid 587] +++ exited with 0 +++ [pid 585] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 598 attached [pid 592] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 585] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=587, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 598] set_robust_list(0x7f5cd2d209a0, 24 [pid 592] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 598] <... set_robust_list resumed>) = 0 [pid 592] <... futex resumed>) = 0 [pid 585] exit_group(0 [pid 592] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] rt_sigprocmask(SIG_SETMASK, [] [pid 592] +++ exited with 0 +++ [pid 585] <... exit_group resumed>) = ? [pid 598] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 599 attached [pid 599] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 599] rt_sigprocmask(SIG_SETMASK, [] [pid 585] +++ exited with 0 +++ [pid 598] memfd_create("syzkaller", 0 [pid 599] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 598] <... memfd_create resumed>) = 3 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=585, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 599] memfd_create("syzkaller", 0 [pid 598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 599] <... memfd_create resumed>) = 3 [pid 598] <... mmap resumed>) = 0x7f5cca900000 [pid 599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] <... restart_syscall resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] <... openat resumed>) = 3 [pid 311] <... ioctl resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 311] close(3 [pid 310] <... ioctl resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 310] close(3 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... close resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 597] <... write resumed>) = 1048576 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 600 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 601 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 597] munmap(0x7f5cca900000, 138412032) = 0 [pid 597] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 597] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 597] ioctl(4, LOOP_CLR_FD) = 0 [pid 599] <... write resumed>) = 1048576 [pid 597] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 597] close(4) = 0 [pid 597] close(3) = 0 [pid 599] munmap(0x7f5cca900000, 138412032 [pid 597] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] <... futex resumed>) = 0 [pid 595] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 597] <... futex resumed>) = 1 [pid 597] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 597] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] <... futex resumed>) = 0 [pid 595] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] <... futex resumed>) = 1 [pid 597] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 597] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] <... futex resumed>) = 0 [pid 595] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] <... futex resumed>) = 1 [pid 597] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 599] <... munmap resumed>) = 0 [pid 597] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] <... futex resumed>) = 0 [pid 595] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] <... futex resumed>) = 1 [pid 597] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 597] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 595] <... futex resumed>) = 0 [pid 595] exit_group(0) = ? [pid 599] <... openat resumed>) = 4 [pid 597] <... futex resumed>) = ? [pid 597] +++ exited with 0 +++ [pid 595] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=595, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 599] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 599] ioctl(4, LOOP_CLR_FD) = 0 [pid 598] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 601 attached ci2-android-6-1/strace-static-x86_64: Process 600 attached [pid 599] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 599] close(4) = 0 [pid 599] close(3 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 602 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 601] set_robust_list(0x55555618f760, 24 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 600] set_robust_list(0x55555618f760, 24 [pid 601] <... set_robust_list resumed>) = 0 [pid 600] <... set_robust_list resumed>) = 0 [pid 599] <... close resumed>) = 0 [pid 601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 601] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 600] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 601] <... prctl resumed>) = 0 [pid 600] <... prctl resumed>) = 0 [pid 601] setpgid(0, 0 [pid 600] setpgid(0, 0 [pid 601] <... setpgid resumed>) = 0 [pid 600] <... setpgid resumed>) = 0 [pid 601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 601] <... openat resumed>) = 3 [pid 600] <... openat resumed>) = 3 [pid 598] <... write resumed>) = 1048576 [pid 601] write(3, "1000", 4 [pid 600] write(3, "1000", 4 [pid 601] <... write resumed>) = 4 [pid 600] <... write resumed>) = 4 [pid 601] close(3 [pid 598] munmap(0x7f5cca900000, 138412032 [pid 601] <... close resumed>) = 0 [pid 600] close(3 [pid 601] write(1, "executing program\n", 18 [pid 600] <... close resumed>) = 0 executing program [pid 601] <... write resumed>) = 18 [pid 600] write(1, "executing program\n", 18 [pid 598] <... munmap resumed>) = 0 [pid 601] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... write resumed>) = 18 [pid 598] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 601] <... futex resumed>) = 0 [pid 600] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 600] <... futex resumed>) = 0 [pid 598] <... openat resumed>) = 4 executing program [pid 601] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 600] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 601] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 600] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 601] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 601] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 600] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 601] <... mmap resumed>) = 0x7f5cd2d00000 [pid 601] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 601] <... mprotect resumed>) = 0 [pid 600] <... mmap resumed>) = 0x7f5cd2d00000 [pid 601] rt_sigprocmask(SIG_BLOCK, ~[] [pid 600] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 601] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 600] <... mprotect resumed>) = 0 [pid 601] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 600] rt_sigprocmask(SIG_BLOCK, ~[] [pid 601] <... clone3 resumed> => {parent_tid=[603]}, 88) = 603 [pid 600] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 601] rt_sigprocmask(SIG_SETMASK, [] [pid 600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 601] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 601] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 600] <... clone3 resumed> => {parent_tid=[604]}, 88) = 604 [pid 601] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 600] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 600] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 598] ioctl(4, LOOP_SET_FD, 3 [pid 599] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] <... futex resumed>) = 1 [pid 599] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 599] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 596] <... futex resumed>) = 0 [pid 599] truncate("./file1", 36262 [pid 596] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 596] <... futex resumed>) = 0 [pid 599] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] <... futex resumed>) = 0 [pid 596] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 599] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 596] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 604 attached [pid 599] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 598] ioctl(4, LOOP_CLR_FD [pid 596] <... futex resumed>) = 0 [pid 604] set_robust_list(0x7f5cd2d209a0, 24 [pid 599] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... ioctl resumed>) = 0 [pid 596] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] <... set_robust_list resumed>) = 0 [pid 599] <... futex resumed>) = 0 [pid 596] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 604] rt_sigprocmask(SIG_SETMASK, [] [pid 599] read(-1 [pid 596] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 596] <... futex resumed>) = 0 [pid 599] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] <... futex resumed>) = 0 [pid 596] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 599] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 596] exit_group(0 [pid 599] <... futex resumed>) = ? [pid 596] <... exit_group resumed>) = ? [pid 599] +++ exited with 0 +++ [pid 596] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=596, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 602 attached [pid 602] set_robust_list(0x55555618f760, 24) = 0 [pid 602] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 602] setpgid(0, 0) = 0 [pid 602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 602] write(3, "1000", 4) = 4 [pid 602] close(3) = 0 [pid 602] write(1, "executing program\n", 18) = 18 [pid 602] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 executing program [pid 602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 603 attached [pid 602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 603] set_robust_list(0x7f5cd2d209a0, 24 [pid 602] <... mmap resumed>) = 0x7f5cd2d00000 [pid 603] <... set_robust_list resumed>) = 0 [pid 602] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 603] rt_sigprocmask(SIG_SETMASK, [] [pid 602] <... mprotect resumed>) = 0 [pid 603] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 602] rt_sigprocmask(SIG_BLOCK, ~[] [pid 603] memfd_create("syzkaller", 0 [pid 602] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 603] <... memfd_create resumed>) = 3 [pid 602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 602] <... clone3 resumed> => {parent_tid=[605]}, 88) = 605 [pid 602] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... restart_syscall resumed>) = 0 [pid 604] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 602] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 598] ioctl(4, LOOP_SET_FD, 3 [pid 604] memfd_create("syzkaller", 0 [pid 602] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] <... memfd_create resumed>) = 3 [pid 602] <... futex resumed>) = 0 [pid 598] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 602] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 598] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 604] <... mmap resumed>) = 0x7f5cca900000 [pid 598] close(3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 598] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 606 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 605 attached [pid 605] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 605] memfd_create("syzkaller", 0) = 3 [pid 605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 604] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 598] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... futex resumed>) = 0 [pid 598] <... futex resumed>) = 1 [pid 594] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 594] <... futex resumed>) = 0 [pid 594] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 598] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... futex resumed>) = 0 [pid 598] <... futex resumed>) = 1 [pid 598] truncate("./file1", 36262 [pid 594] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 594] <... futex resumed>) = 0 [pid 598] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... futex resumed>) = 0 [pid 594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 594] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 594] <... futex resumed>) = 0 [pid 598] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 594] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 598] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 594] <... futex resumed>) = 0 [pid 598] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 594] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 594] <... futex resumed>) = 0 [pid 598] read(-1 [pid 594] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 598] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 594] <... futex resumed>) = 0 [pid 598] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 594] exit_group(0ci2-android-6-1/strace-static-x86_64: Process 606 attached [pid 598] <... futex resumed>) = ? [pid 594] <... exit_group resumed>) = ? [pid 606] set_robust_list(0x55555618f760, 24 [pid 598] +++ exited with 0 +++ [pid 594] +++ exited with 0 +++ [pid 606] <... set_robust_list resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=594, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 606] rt_sigprocmask(SIG_SETMASK, [] [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 606] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 606] setpgid(0, 0) = 0 [pid 606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 606] write(3, "1000", 4 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3 [pid 606] <... write resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 606] close(3 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 606] <... close resumed>) = 0 [pid 605] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 604] <... write resumed>) = 1048576 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 604] munmap(0x7f5cca900000, 138412032 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD executing program [pid 606] write(1, "executing program\n", 18) = 18 [pid 606] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 607 [pid 606] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 606] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 604] <... munmap resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 606] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 606] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 606] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 606] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[608]}, 88) = 608 [pid 606] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 606] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 606] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 603] <... write resumed>) = 1048576 [pid 603] munmap(0x7f5cca900000, 138412032) = 0 [pid 604] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 604] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 604] ioctl(4, LOOP_CLR_FD) = 0 [pid 603] openat(AT_FDCWD, "/dev/loop3", O_RDWRci2-android-6-1/strace-static-x86_64: Process 607 attached ) = 4 ci2-android-6-1/strace-static-x86_64: Process 608 attached [pid 608] set_robust_list(0x7f5cd2d209a0, 24 [pid 607] set_robust_list(0x55555618f760, 24 [pid 603] ioctl(4, LOOP_SET_FD, 3 [pid 608] <... set_robust_list resumed>) = 0 [pid 607] <... set_robust_list resumed>) = 0 [pid 608] rt_sigprocmask(SIG_SETMASK, [] [pid 607] rt_sigprocmask(SIG_SETMASK, [] [pid 603] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 608] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 607] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 603] ioctl(4, LOOP_CLR_FD [pid 608] memfd_create("syzkaller", 0 [pid 607] <... prctl resumed>) = 0 [pid 608] <... memfd_create resumed>) = 3 [pid 607] setpgid(0, 0 [pid 603] <... ioctl resumed>) = 0 [pid 608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 607] <... setpgid resumed>) = 0 [pid 608] <... mmap resumed>) = 0x7f5cca900000 [pid 607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 604] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 604] close(4) = 0 [pid 603] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 603] close(4) = 0 [pid 603] close(3) = 0 [pid 603] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... futex resumed>) = 0 [pid 601] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 601] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] <... futex resumed>) = 1 [pid 603] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 603] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] close(3 [pid 601] <... futex resumed>) = 0 [pid 601] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 601] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] <... futex resumed>) = 1 [pid 603] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 603] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... futex resumed>) = 0 [pid 601] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 601] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] <... futex resumed>) = 1 [pid 603] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 603] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... futex resumed>) = 0 [pid 601] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 601] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] <... futex resumed>) = 1 [pid 603] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 603] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 601] <... futex resumed>) = 0 [pid 603] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 601] exit_group(0 [pid 607] <... openat resumed>) = 3 [pid 604] <... close resumed>) = 0 [pid 603] <... futex resumed>) = ? [pid 601] <... exit_group resumed>) = ? [pid 607] write(3, "1000", 4 [pid 604] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] +++ exited with 0 +++ [pid 601] +++ exited with 0 +++ [pid 604] <... futex resumed>) = 1 [pid 600] <... futex resumed>) = 0 [pid 607] <... write resumed>) = 4 [pid 604] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=601, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 607] close(3 [pid 604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 600] <... futex resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 604] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 600] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] <... close resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 604] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 607] write(1, "executing program\n", 18 executing program [pid 604] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] <... write resumed>) = 18 [pid 604] <... futex resumed>) = 1 [pid 600] <... futex resumed>) = 0 [pid 607] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 607] <... futex resumed>) = 0 [pid 604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 600] <... futex resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 607] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 604] truncate("./file1", 36262 [pid 600] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] ioctl(3, LOOP_CLR_FD [pid 607] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 604] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 310] <... ioctl resumed>) = 0 [pid 607] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 604] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] close(3 [pid 607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 604] <... futex resumed>) = 1 [pid 600] <... futex resumed>) = 0 [pid 607] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 604] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... close resumed>) = 0 [pid 604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 600] <... futex resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 607] <... mmap resumed>) = 0x7f5cd2d00000 [pid 604] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 600] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 607] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 604] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 604] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 600] <... futex resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 609 [pid 607] <... mprotect resumed>) = 0 [pid 604] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 600] <... futex resumed>) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 604] read(-1 [pid 600] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] rt_sigprocmask(SIG_BLOCK, ~[] [pid 604] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 607] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 604] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 604] <... futex resumed>) = 1 [pid 600] <... futex resumed>) = 0 [pid 604] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] exit_group(0) = ? [pid 607] <... clone3 resumed> => {parent_tid=[610]}, 88) = 610 [pid 604] <... futex resumed>) = ? [pid 604] +++ exited with 0 +++ [pid 600] +++ exited with 0 +++ [pid 607] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=600, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 607] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 607] <... futex resumed>) = 0 [pid 605] <... write resumed>) = 1048576 [pid 605] munmap(0x7f5cca900000, 138412032) = 0 [pid 605] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 605] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 605] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 609 attached [pid 609] set_robust_list(0x55555618f760, 24) = 0 [pid 607] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 608] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 605] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 605] close(4) = 0 [pid 605] close(3 [pid 609] rt_sigprocmask(SIG_SETMASK, [] [pid 311] <... restart_syscall resumed>) = 0 [pid 609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWRci2-android-6-1/strace-static-x86_64: Process 610 attached ) = 3 [pid 610] set_robust_list(0x7f5cd2d209a0, 24 [pid 311] ioctl(3, LOOP_CLR_FD [pid 610] <... set_robust_list resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 610] rt_sigprocmask(SIG_SETMASK, [] [pid 311] close(3 [pid 610] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... close resumed>) = 0 [pid 610] memfd_create("syzkaller", 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 610] <... memfd_create resumed>) = 3 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 609] setpgid(0, 0 [pid 610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 611 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 609] <... setpgid resumed>) = 0 [pid 609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 609] write(3, "1000", 4) = 4 [pid 609] close(3 [pid 605] <... close resumed>) = 0 [pid 609] <... close resumed>) = 0 [pid 609] write(1, "executing program\n", 18) = 18 executing program [pid 609] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 609] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 609] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 609] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 610] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 609] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 609] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[612]}, 88) = 612 [pid 609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 609] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 605] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] <... futex resumed>) = 1 [pid 605] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 605] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] <... futex resumed>) = 1 [pid 605] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 605] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] <... futex resumed>) = 1 [pid 605] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 605] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] <... futex resumed>) = 1 [pid 605] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 605] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] <... futex resumed>) = 0 [pid 602] exit_group(0) = ? [pid 605] <... futex resumed>) = ? [pid 605] +++ exited with 0 +++ [pid 602] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=602, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 608] <... write resumed>) = 1048576 [pid 608] munmap(0x7f5cca900000, 138412032) = 0 ci2-android-6-1/strace-static-x86_64: Process 612 attached [pid 612] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 612] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 612] memfd_create("syzkaller", 0) = 3 [pid 612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 613 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 612] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 608] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 ci2-android-6-1/strace-static-x86_64: Process 611 attached [pid 608] ioctl(4, LOOP_SET_FD, 3 [pid 611] set_robust_list(0x55555618f760, 24 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 612] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 613 attached [pid 613] set_robust_list(0x55555618f760, 24) = 0 [pid 613] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 613] setpgid(0, 0) = 0 [pid 613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 610] <... write resumed>) = 1048576 [pid 608] ioctl(4, LOOP_CLR_FD [pid 611] <... set_robust_list resumed>) = 0 [pid 608] <... ioctl resumed>) = 0 [pid 611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 613] write(3, "1000", 4) = 4 [pid 611] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 613] close(3) = 0 executing program [pid 613] write(1, "executing program\n", 18) = 18 [pid 613] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... prctl resumed>) = 0 [pid 608] ioctl(4, LOOP_SET_FD, 3 [pid 611] setpgid(0, 0 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 611] <... setpgid resumed>) = 0 [pid 608] close(4) = 0 [pid 611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 608] close(3 [pid 613] <... futex resumed>) = 0 [pid 613] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 613] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 612] munmap(0x7f5cca900000, 138412032) = 0 [pid 613] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 613] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 613] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 611] <... openat resumed>) = 3 [pid 608] <... close resumed>) = 0 [pid 611] write(3, "1000", 4) = 4 [pid 608] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 613] <... clone3 resumed> => {parent_tid=[614]}, 88) = 614 [pid 613] rt_sigprocmask(SIG_SETMASK, [] [pid 611] close(3 [pid 608] <... futex resumed>) = 1 [pid 606] <... futex resumed>) = 0 [pid 611] <... close resumed>) = 0 [pid 608] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] write(1, "executing program\n", 18 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 611] <... write resumed>) = 18 [pid 606] <... futex resumed>) = 0 executing program [pid 606] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] ioctl(4, LOOP_SET_FD, 3 [pid 613] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 612] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 613] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 612] ioctl(4, LOOP_CLR_FD [pid 613] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 612] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 614 attached [pid 614] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 614] rt_sigprocmask(SIG_SETMASK, [] [pid 611] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 610] munmap(0x7f5cca900000, 138412032 [pid 608] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 611] <... futex resumed>) = 0 [pid 611] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 611] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 611] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 611] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 611] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[615]}, 88) = 615 [pid 611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 611] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 608] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 608] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 606] <... futex resumed>) = 0 [pid 608] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 608] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 608] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] <... futex resumed>) = 1 [pid 606] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] ioctl(4, LOOP_SET_FD, 3 [pid 606] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 610] <... munmap resumed>) = 0 [pid 610] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 606] <... futex resumed>) = 0 [pid 610] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 612] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] ioctl(4, LOOP_CLR_FD) = 0 [pid 614] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 612] close(4 [pid 614] memfd_create("syzkaller", 0) = 3 [pid 614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 610] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 610] close(4) = 0 [pid 610] close(3 [pid 612] <... close resumed>) = 0 [pid 608] <... futex resumed>) = 0 [pid 612] close(3 [pid 608] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 612] <... close resumed>) = 0 [pid 608] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 608] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] <... futex resumed>) = 0 [pid 609] <... futex resumed>) = 0 [pid 608] <... futex resumed>) = 1 [pid 606] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] <... futex resumed>) = 0 [pid 609] <... futex resumed>) = 0 [pid 606] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 608] read(-1 [pid 612] <... futex resumed>) = 1 [pid 608] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 612] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 608] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 612] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = 1 [pid 606] <... futex resumed>) = 0 [pid 606] exit_group(0) = ? [pid 609] <... futex resumed>) = 0 [pid 609] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 608] +++ exited with 0 +++ [pid 606] +++ exited with 0 +++ [pid 612] <... futex resumed>) = 1 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=606, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 612] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 612] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 609] <... futex resumed>) = 0 [pid 609] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 610] <... close resumed>) = 0 [pid 612] <... mmap resumed>) = -1 EBADF (Bad file descriptor) ci2-android-6-1/strace-static-x86_64: Process 615 attached [pid 610] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] <... futex resumed>) = 0 [pid 615] set_robust_list(0x7f5cd2d209a0, 24 [pid 612] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 607] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] <... futex resumed>) = 1 [pid 612] <... futex resumed>) = 1 [pid 609] <... futex resumed>) = 0 [pid 610] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 612] read(-1 [pid 609] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 612] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 615] <... set_robust_list resumed>) = 0 [pid 610] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] <... futex resumed>) = 0 [pid 607] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 607] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] <... futex resumed>) = 1 [pid 610] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 610] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] <... futex resumed>) = 0 [pid 607] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 607] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] <... futex resumed>) = 1 [pid 610] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 615] rt_sigprocmask(SIG_SETMASK, [] [pid 612] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... restart_syscall resumed>) = 0 [pid 610] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] <... futex resumed>) = 0 [pid 607] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 607] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] <... futex resumed>) = 1 [pid 610] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 610] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = 0 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 607] exit_group(0 [pid 615] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 607] <... exit_group resumed>) = ? [pid 612] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 615] memfd_create("syzkaller", 0 [pid 609] exit_group(0 [pid 612] <... futex resumed>) = ? [pid 609] <... exit_group resumed>) = ? [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 612] +++ exited with 0 +++ [pid 610] <... futex resumed>) = ? [pid 609] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=609, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] <... openat resumed>) = 3 [pid 615] <... memfd_create resumed>) = 3 [pid 614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 308] ioctl(3, LOOP_CLR_FD [pid 610] +++ exited with 0 +++ [pid 607] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=607, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... close resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 616 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 616 attached [pid 616] set_robust_list(0x55555618f760, 24) = 0 [pid 616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 616] setpgid(0, 0) = 0 [pid 616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 616] write(3, "1000", 4) = 4 [pid 616] close(3) = 0 [pid 616] write(1, "executing program\n", 18) = 18 [pid 616] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 616] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 616] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 616] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 616] rt_sigprocmask(SIG_BLOCK, ~[] [pid 614] <... write resumed>) = 1048576 [pid 616] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 616] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 614] munmap(0x7f5cca900000, 138412032) = 0 [pid 616] <... clone3 resumed> => {parent_tid=[617]}, 88) = 617 [pid 616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 616] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 616] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 614] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 614] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 614] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 617 attached [pid 617] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 617] memfd_create("syzkaller", 0) = 3 [pid 617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 310] <... restart_syscall resumed>) = 0 executing program [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] close(3) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 618 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 619 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 614] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 614] close(4) = 0 [pid 614] close(3) = 0 [pid 614] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 614] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 613] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 614] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 614] truncate("./file1", 36262 [pid 613] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 613] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 614] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 614] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 614] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 613] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 614] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 613] <... futex resumed>) = 1 [pid 614] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 613] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] <... futex resumed>) = 0 [pid 613] <... futex resumed>) = 1 [pid 614] read(-1 [pid 613] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 614] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 614] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 614] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] exit_group(0 [pid 614] <... futex resumed>) = ? [pid 613] <... exit_group resumed>) = ? [pid 614] +++ exited with 0 +++ [pid 613] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=613, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 617] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 619 attached [pid 619] set_robust_list(0x55555618f760, 24) = 0 [pid 619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 619] setpgid(0, 0) = 0 [pid 619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 309] <... restart_syscall resumed>) = 0 [pid 619] write(3, "1000", 4) = 4 [pid 619] close(3 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 619] <... close resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 619] write(1, "executing program\n", 18 [pid 309] ioctl(3, LOOP_CLR_FD [pid 619] <... write resumed>) = 18 [pid 309] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... close resumed>) = 0 [pid 619] <... futex resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 619] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} executing program [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 619] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 619] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 619] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 620 [pid 619] <... mprotect resumed>) = 0 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 619] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 619] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[621]}, 88) = 621 [pid 619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 619] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 620 attached [pid 620] set_robust_list(0x55555618f760, 24) = 0 [pid 620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 620] setpgid(0, 0) = 0 [pid 620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 620] write(3, "1000", 4) = 4 [pid 620] close(3) = 0 [pid 620] write(1, "executing program\n", 18) = 18 [pid 620] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 620] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 620] rt_sigprocmask(SIG_BLOCK, ~[] [pid 617] <... write resumed>) = 1048576 [pid 620] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[622]}, 88) = 622 [pid 620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 620] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 617] munmap(0x7f5cca900000, 138412032) = 0 [pid 617] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 617] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 617] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 621 attached executing program [pid 621] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 621] memfd_create("syzkaller", 0) = 3 [pid 621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 618 attached [pid 618] set_robust_list(0x55555618f760, 24 [pid 617] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 617] close(4) = 0 [pid 617] close(3 [pid 618] <... set_robust_list resumed>) = 0 [pid 618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 618] setpgid(0, 0) = 0 [pid 618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 618] write(3, "1000", 4) = 4 [pid 618] close(3) = 0 executing program [pid 618] write(1, "executing program\n", 18) = 18 [pid 618] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 618] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 617] <... close resumed>) = 0 [pid 615] <... write resumed>) = 1048576 [pid 617] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] <... futex resumed>) = 0 [pid 616] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 616] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 617] <... futex resumed>) = 1 [pid 617] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025ci2-android-6-1/strace-static-x86_64: Process 622 attached [pid 618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 617] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 615] munmap(0x7f5cca900000, 138412032 [pid 621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 618] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 622] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 622] rt_sigprocmask(SIG_SETMASK, [] [pid 618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 617] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... munmap resumed>) = 0 [pid 621] <... write resumed>) = 1048576 [pid 622] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 618] <... mmap resumed>) = 0x7f5cd2d00000 [pid 615] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 622] memfd_create("syzkaller", 0 [pid 621] munmap(0x7f5cca900000, 138412032 [pid 618] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 617] <... futex resumed>) = 1 [pid 616] <... futex resumed>) = 0 [pid 615] <... openat resumed>) = 4 [pid 622] <... memfd_create resumed>) = 3 [pid 618] <... mprotect resumed>) = 0 [pid 617] truncate("./file1", 36262 [pid 616] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 618] rt_sigprocmask(SIG_BLOCK, ~[] [pid 617] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 616] <... futex resumed>) = 0 [pid 615] ioctl(4, LOOP_SET_FD, 3 [pid 621] <... munmap resumed>) = 0 [pid 618] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 617] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 617] <... futex resumed>) = 0 [pid 616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ci2-android-6-1/strace-static-x86_64: Process 623 attached [pid 622] <... mmap resumed>) = 0x7f5cca900000 [pid 621] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 617] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 616] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] set_robust_list(0x7f5cd2d209a0, 24 [pid 621] <... openat resumed>) = 4 [pid 618] <... clone3 resumed> => {parent_tid=[623]}, 88) = 623 [pid 617] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 616] <... futex resumed>) = 0 [pid 615] ioctl(4, LOOP_CLR_FD [pid 618] rt_sigprocmask(SIG_SETMASK, [] [pid 617] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 617] <... futex resumed>) = 0 [pid 616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] read(-1 [pid 616] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] <... futex resumed>) = 0 [pid 617] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 616] <... futex resumed>) = 0 [pid 618] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 617] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 617] <... futex resumed>) = 0 [pid 616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 617] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 616] exit_group(0 [pid 617] <... futex resumed>) = ? [pid 616] <... exit_group resumed>) = ? [pid 622] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 617] +++ exited with 0 +++ [pid 616] +++ exited with 0 +++ [pid 615] <... ioctl resumed>) = 0 [pid 623] <... set_robust_list resumed>) = 0 [pid 621] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 621] ioctl(4, LOOP_CLR_FD [pid 623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 623] memfd_create("syzkaller", 0) = 3 [pid 623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 308] <... restart_syscall resumed>) = 0 [pid 615] ioctl(4, LOOP_SET_FD, 3 [pid 621] <... ioctl resumed>) = 0 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 615] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 615] <... close resumed>) = 0 [pid 615] close(3 [pid 308] <... openat resumed>) = 3 [pid 623] <... write resumed>) = 1048576 [pid 623] munmap(0x7f5cca900000, 138412032 [pid 615] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 621] ioctl(4, LOOP_SET_FD, 3 [pid 615] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... ioctl resumed>) = 0 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 615] <... futex resumed>) = 1 [pid 611] <... futex resumed>) = 0 [pid 308] close(3 [pid 621] close(4 [pid 615] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 611] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... close resumed>) = 0 [pid 621] <... close resumed>) = 0 [pid 615] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 611] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 621] close(3 [pid 615] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 615] <... futex resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 611] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 615] truncate("./file1", 36262 [pid 611] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 611] <... futex resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 624 [pid 615] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 615] <... futex resumed>) = 0 [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 615] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 611] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 611] <... futex resumed>) = 0 [pid 611] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 623] <... munmap resumed>) = 0 [pid 623] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 623] ioctl(4, LOOP_SET_FD, 3 [pid 621] <... close resumed>) = 0 [pid 615] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 611] <... futex resumed>) = 0 [pid 615] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 611] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = 0 [pid 611] <... futex resumed>) = 1 [pid 615] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 611] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 615] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 611] exit_group(0 [pid 615] <... futex resumed>) = ? [pid 611] <... exit_group resumed>) = ? [pid 615] +++ exited with 0 +++ [pid 611] +++ exited with 0 +++ [pid 621] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=611, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 621] <... futex resumed>) = 1 [pid 619] <... futex resumed>) = 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 621] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 619] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 623] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 624 attached [pid 624] set_robust_list(0x55555618f760, 24) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 621] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 621] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 621] <... futex resumed>) = 1 [pid 311] <... openat resumed>) = 3 [pid 621] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] ioctl(3, LOOP_CLR_FD [pid 619] <... futex resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 311] close(3 [pid 619] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... close resumed>) = 0 [pid 622] <... write resumed>) = 1048576 [pid 619] <... futex resumed>) = 1 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 622] munmap(0x7f5cca900000, 138412032 [pid 621] <... futex resumed>) = 0 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 621] truncate("./file1", 36262 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 623] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 623] close(4 [pid 621] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 625 [pid 622] <... munmap resumed>) = 0 [pid 621] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 621] <... futex resumed>) = 1 [pid 619] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 622] <... openat resumed>) = 4 [pid 621] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 619] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 622] ioctl(4, LOOP_SET_FD, 3 [pid 621] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 619] <... futex resumed>) = 0 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 619] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 623] <... close resumed>) = 0 [pid 623] close(3 [pid 621] <... futex resumed>) = 1 [pid 622] ioctl(4, LOOP_CLR_FD [pid 619] <... futex resumed>) = 0 [pid 622] <... ioctl resumed>) = 0 [pid 621] read(-1 [pid 619] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=48000000} [pid 621] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 621] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 619] <... futex resumed>) = 0 [pid 621] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 619] exit_group(0 [pid 621] <... futex resumed>) = ? [pid 619] <... exit_group resumed>) = ? [pid 621] +++ exited with 0 +++ [pid 619] +++ exited with 0 +++ [pid 622] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 625 attached [pid 624] rt_sigprocmask(SIG_SETMASK, [] [pid 623] <... close resumed>) = 0 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=619, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 625] set_robust_list(0x55555618f760, 24 [pid 622] close(4 [pid 625] <... set_robust_list resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 622] <... close resumed>) = 0 [pid 622] close(3 [pid 307] <... restart_syscall resumed>) = 0 [pid 624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 623] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 623] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = 0 [pid 624] <... prctl resumed>) = 0 [pid 623] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 618] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] setpgid(0, 0 [pid 623] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 618] <... futex resumed>) = 0 [pid 624] <... setpgid resumed>) = 0 [pid 623] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 623] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] <... openat resumed>) = 3 [pid 623] truncate("./file1", 36262 [pid 622] <... close resumed>) = 0 [pid 618] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] rt_sigprocmask(SIG_SETMASK, [] [pid 622] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 624] write(3, "1000", 4 [pid 623] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 622] <... futex resumed>) = 1 [pid 620] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = 0 [pid 625] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 622] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 625] <... prctl resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 625] setpgid(0, 0) = 0 [pid 624] <... write resumed>) = 4 [pid 623] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 620] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... openat resumed>) = 3 [pid 625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] ioctl(3, LOOP_CLR_FD [pid 625] <... openat resumed>) = 3 [pid 624] close(3 [pid 623] <... futex resumed>) = 0 [pid 622] <... futex resumed>) = 0 [pid 620] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 307] <... ioctl resumed>) = 0 [pid 625] write(3, "1000", 4 [pid 622] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 307] close(3 [pid 625] <... write resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 625] close(3 [pid 622] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 625] <... close resumed>) = 0 [pid 622] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 625] write(1, "executing program\n", 18 [pid 622] <... futex resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 625] <... write resumed>) = 18 executing program [pid 622] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] <... close resumed>) = 0 [pid 623] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 620] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] write(1, "executing program\n", 18 [pid 623] <... mmap resumed>) = -1 EBADF (Bad file descriptor) executing program [pid 620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] <... futex resumed>) = 0 [pid 625] <... futex resumed>) = 0 [pid 624] <... write resumed>) = 18 [pid 623] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 620] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 626 [pid 625] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 624] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 623] <... futex resumed>) = 0 [pid 622] <... futex resumed>) = 0 [pid 620] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ci2-android-6-1/strace-static-x86_64: Process 626 attached [pid 625] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 624] <... futex resumed>) = 0 [pid 623] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 622] truncate("./file1", 36262 [pid 620] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 626] set_robust_list(0x55555618f760, 24 [pid 625] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 624] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 622] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 618] <... futex resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 626] <... set_robust_list resumed>) = 0 [pid 625] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 624] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 623] read(-1 [pid 622] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] rt_sigprocmask(SIG_SETMASK, [] [pid 625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 624] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 623] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 622] <... futex resumed>) = 1 [pid 620] <... futex resumed>) = 0 [pid 626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 625] <... mmap resumed>) = 0x7f5cd2d00000 [pid 624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 623] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 625] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 623] <... futex resumed>) = 1 [pid 622] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 620] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = 0 [pid 626] <... prctl resumed>) = 0 [pid 625] <... mprotect resumed>) = 0 [pid 624] <... mmap resumed>) = 0x7f5cd2d00000 [pid 623] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 622] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 620] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] exit_group(0 [pid 626] setpgid(0, 0 [pid 625] rt_sigprocmask(SIG_BLOCK, ~[] [pid 624] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 623] <... futex resumed>) = ? [pid 622] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 618] <... exit_group resumed>) = ? [pid 626] <... setpgid resumed>) = 0 [pid 625] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 624] <... mprotect resumed>) = 0 [pid 623] +++ exited with 0 +++ [pid 622] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] +++ exited with 0 +++ [pid 626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 624] rt_sigprocmask(SIG_BLOCK, ~[] [pid 622] <... futex resumed>) = 1 ci2-android-6-1/strace-static-x86_64: Process 627 attached [pid 626] <... openat resumed>) = 3 [pid 624] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 622] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] <... futex resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=618, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 626] write(3, "1000", 4 [pid 625] <... clone3 resumed> => {parent_tid=[627]}, 88) = 627 [pid 624] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 620] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 628 attached [pid 627] set_robust_list(0x7f5cd2d209a0, 24 [pid 626] <... write resumed>) = 4 [pid 625] rt_sigprocmask(SIG_SETMASK, [] [pid 620] <... futex resumed>) = 1 [pid 624] <... clone3 resumed> => {parent_tid=[628]}, 88) = 628 [pid 622] <... futex resumed>) = 0 [pid 624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 624] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 628] set_robust_list(0x7f5cd2d209a0, 24 [pid 626] close(3 [pid 625] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 627] <... set_robust_list resumed>) = 0 [pid 622] read(-1 [pid 620] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... set_robust_list resumed>) = 0 [pid 628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 628] memfd_create("syzkaller", 0 [pid 625] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] rt_sigprocmask(SIG_SETMASK, [] [pid 626] <... close resumed>) = 0 [pid 622] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 628] <... memfd_create resumed>) = 3 [pid 626] write(1, "executing program\n", 18 [pid 625] <... futex resumed>) = 0 [pid 622] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program [pid 627] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 626] <... write resumed>) = 18 [pid 625] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 622] <... futex resumed>) = 1 [pid 620] <... futex resumed>) = 0 [pid 627] memfd_create("syzkaller", 0 [pid 626] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] exit_group(0 [pid 627] <... memfd_create resumed>) = 3 [pid 626] <... futex resumed>) = 0 [pid 622] <... futex resumed>) = ? [pid 620] <... exit_group resumed>) = ? [pid 627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 626] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 622] +++ exited with 0 +++ [pid 620] +++ exited with 0 +++ [pid 627] <... mmap resumed>) = 0x7f5cca900000 [pid 626] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=620, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 310] <... restart_syscall resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 628] munmap(0x7f5cca900000, 138412032 [pid 626] <... mmap resumed>) = 0x7f5cd2d00000 [pid 626] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 626] <... mprotect resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 626] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] ioctl(3, LOOP_CLR_FD [pid 626] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 309] <... ioctl resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 628] <... munmap resumed>) = 0 [pid 310] close(3 [pid 309] close(3 [pid 626] <... clone3 resumed> => {parent_tid=[629]}, 88) = 629 [pid 310] <... close resumed>) = 0 [pid 628] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 628] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 628] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 629 attached [pid 629] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 629] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 628] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 628] close(4) = 0 [pid 628] close(3) = 0 [pid 628] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 0 [pid 624] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... futex resumed>) = 1 [pid 628] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 628] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 0 [pid 624] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... futex resumed>) = 1 [pid 628] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 628] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 0 [pid 624] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... futex resumed>) = 1 [pid 628] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 628] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 0 [pid 624] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... futex resumed>) = 1 [pid 628] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 628] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 0 [pid 624] exit_group(0) = ? [pid 628] <... futex resumed>) = ? [pid 628] +++ exited with 0 +++ [pid 624] +++ exited with 0 +++ [pid 627] munmap(0x7f5cca900000, 138412032) = 0 [pid 627] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=624, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 626] rt_sigprocmask(SIG_SETMASK, [] [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... close resumed>) = 0 [pid 627] <... openat resumed>) = 4 [pid 627] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 627] ioctl(4, LOOP_CLR_FD) = 0 [pid 626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 626] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 626] <... futex resumed>) = 1 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 629] <... futex resumed>) = 0 [pid 629] memfd_create("syzkaller", 0 [pid 626] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... restart_syscall resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 630 [pid 629] <... memfd_create resumed>) = 3 [pid 629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 631 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 627] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 627] close(4 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 632 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 627] <... close resumed>) = 0 [pid 627] close(3) = 0 ci2-android-6-1/strace-static-x86_64: Process 630 attached [pid 630] set_robust_list(0x55555618f760, 24) = 0 [pid 630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 630] setpgid(0, 0) = 0 [pid 630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 627] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 630] write(3, "1000", 4 [pid 627] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] <... write resumed>) = 4 [pid 630] close(3) = 0 [pid 630] write(1, "executing program\n", 18) = 18 executing program [pid 630] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 625] <... futex resumed>) = 0 [pid 625] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 625] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] <... futex resumed>) = 0 [pid 627] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 627] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 625] <... futex resumed>) = 0 [pid 625] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 625] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 630] <... mmap resumed>) = 0x7f5cd2d00000 [pid 627] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 625] <... futex resumed>) = 0 [pid 625] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 625] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 630] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 627] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 630] <... mprotect resumed>) = 0 [pid 627] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 625] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 631 attached [pid 625] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] read(-1 [pid 625] <... futex resumed>) = 0 [pid 631] set_robust_list(0x55555618f760, 24 [pid 625] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] <... set_robust_list resumed>) = 0 [pid 630] rt_sigprocmask(SIG_BLOCK, ~[] [pid 627] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 627] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 627] <... futex resumed>) = 1 [pid 625] <... futex resumed>) = 0 [pid 627] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 625] exit_group(0 [pid 631] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 627] <... futex resumed>) = ? [pid 625] <... exit_group resumed>) = ? [pid 630] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 631] <... prctl resumed>) = 0 [pid 627] +++ exited with 0 +++ [pid 625] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=625, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 630] <... clone3 resumed> => {parent_tid=[633]}, 88) = 633 [pid 630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 630] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 629] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 632 attached [pid 632] set_robust_list(0x55555618f760, 24) = 0 [pid 632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 632] setpgid(0, 0) = 0 [pid 632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 632] write(3, "1000", 4) = 4 [pid 631] setpgid(0, 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 632] close(3 [pid 631] <... setpgid resumed>) = 0 [pid 632] <... close resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 632] write(1, "executing program\n", 18 [pid 311] close(3 [pid 631] <... openat resumed>) = 3 [pid 311] <... close resumed>) = 0 [pid 631] write(3, "1000", 4 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 631] <... write resumed>) = 4 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 631] close(3 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 631] <... close resumed>) = 0 [pid 632] <... write resumed>) = 18 [pid 632] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 632] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 executing program [pid 632] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 631] write(1, "executing program\n", 18 [pid 632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 631] <... write resumed>) = 18 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 634 executing program [pid 632] <... mmap resumed>) = 0x7f5cd2d00000 [pid 631] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 631] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 631] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 632] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 631] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 632] <... mprotect resumed>) = 0 [pid 631] <... mmap resumed>) = 0x7f5cd2d00000 [pid 631] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 632] rt_sigprocmask(SIG_BLOCK, ~[] [pid 631] <... mprotect resumed>) = 0 [pid 632] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 632] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 631] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 632] <... clone3 resumed> => {parent_tid=[635]}, 88) = 635 [pid 631] <... clone3 resumed> => {parent_tid=[636]}, 88) = 636 [pid 632] rt_sigprocmask(SIG_SETMASK, [] [pid 631] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 633 attached [pid 632] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 631] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] set_robust_list(0x7f5cd2d209a0, 24 [pid 632] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... futex resumed>) = 0 [pid 633] <... set_robust_list resumed>) = 0 [pid 632] <... futex resumed>) = 0 [pid 631] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 633] rt_sigprocmask(SIG_SETMASK, [] [pid 632] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 629] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 636 attached ci2-android-6-1/strace-static-x86_64: Process 634 attached ci2-android-6-1/strace-static-x86_64: Process 635 attached [pid 633] memfd_create("syzkaller", 0 [pid 629] <... munmap resumed>) = 0 [pid 633] <... memfd_create resumed>) = 3 [pid 629] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 636] set_robust_list(0x7f5cd2d209a0, 24 [pid 634] set_robust_list(0x55555618f760, 24 [pid 636] <... set_robust_list resumed>) = 0 [pid 635] set_robust_list(0x7f5cd2d209a0, 24 [pid 634] <... set_robust_list resumed>) = 0 [pid 633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 629] <... openat resumed>) = 4 [pid 633] <... mmap resumed>) = 0x7f5cca900000 [pid 629] ioctl(4, LOOP_SET_FD, 3 [pid 636] rt_sigprocmask(SIG_SETMASK, [] [pid 635] <... set_robust_list resumed>) = 0 [pid 634] rt_sigprocmask(SIG_SETMASK, [] [pid 629] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 635] rt_sigprocmask(SIG_SETMASK, [] [pid 634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 629] ioctl(4, LOOP_CLR_FD [pid 636] memfd_create("syzkaller", 0 [pid 635] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 634] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 629] <... ioctl resumed>) = 0 [pid 636] <... memfd_create resumed>) = 3 [pid 635] memfd_create("syzkaller", 0 [pid 634] <... prctl resumed>) = 0 [pid 636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] <... memfd_create resumed>) = 3 [pid 634] setpgid(0, 0 [pid 636] <... mmap resumed>) = 0x7f5cca900000 [pid 635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 634] <... setpgid resumed>) = 0 [pid 634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 635] <... mmap resumed>) = 0x7f5cca900000 [pid 634] <... openat resumed>) = 3 [pid 634] write(3, "1000", 4 [pid 633] <... write resumed>) = 1048576 [pid 634] <... write resumed>) = 4 [pid 629] ioctl(4, LOOP_SET_FD, 3 [pid 634] close(3 [pid 629] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 634] <... close resumed>) = 0 [pid 629] close(4 [pid 634] write(1, "executing program\n", 18) = 18 [pid 633] munmap(0x7f5cca900000, 138412032) = 0 [pid 633] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 633] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 633] ioctl(4, LOOP_CLR_FD) = 0 [pid 633] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 633] close(4) = 0 executing program [pid 633] close(3 [pid 634] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 629] <... close resumed>) = 0 [pid 634] <... futex resumed>) = 0 [pid 633] <... close resumed>) = 0 [pid 629] close(3 [pid 634] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 636] <... write resumed>) = 1048576 [pid 634] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 634] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 633] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... mmap resumed>) = 0x7f5cd2d00000 [pid 630] <... futex resumed>) = 0 [pid 634] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 630] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 634] <... mprotect resumed>) = 0 [pid 630] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 633] <... futex resumed>) = 1 [pid 634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 633] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 634] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 633] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 633] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... clone3 resumed> => {parent_tid=[637]}, 88) = 637 [pid 630] <... futex resumed>) = 0 [pid 634] rt_sigprocmask(SIG_SETMASK, [] [pid 630] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 634] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] <... futex resumed>) = 1 [pid 634] <... futex resumed>) = 0 [pid 633] truncate("./file1", 36262 [pid 634] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 633] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 633] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 633] <... futex resumed>) = 1 [pid 633] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 633] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 633] <... futex resumed>) = 1 [pid 633] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 633] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] exit_group(0 [pid 629] <... close resumed>) = 0 [pid 633] <... futex resumed>) = ? [pid 630] <... exit_group resumed>) = ? [pid 633] +++ exited with 0 +++ [pid 630] +++ exited with 0 +++ [pid 629] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... write resumed>) = 1048576 [pid 629] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=630, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 636] munmap(0x7f5cca900000, 138412032 [pid 626] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 629] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 636] <... munmap resumed>) = 0 [pid 626] <... futex resumed>) = 0 [pid 629] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 626] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 629] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... openat resumed>) = 4 [pid 636] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 636] ioctl(4, LOOP_CLR_FD [pid 629] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 636] <... ioctl resumed>) = 0 [pid 629] truncate("./file1", 36262 [pid 626] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 629] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 626] <... futex resumed>) = 0 [pid 629] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] munmap(0x7f5cca900000, 138412032 [pid 629] <... futex resumed>) = 0 [pid 626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ci2-android-6-1/strace-static-x86_64: Process 637 attached [pid 635] <... munmap resumed>) = 0 [pid 629] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 626] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 629] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 626] <... futex resumed>) = 0 [pid 629] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] <... futex resumed>) = 0 [pid 626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] read(-1 [pid 626] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 629] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 636] ioctl(4, LOOP_SET_FD, 3 [pid 626] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 636] close(4) = 0 [pid 636] close(3) = 0 [pid 636] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... futex resumed>) = 0 [pid 631] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 631] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 636] <... futex resumed>) = 1 [pid 626] exit_group(0 [pid 636] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 626] <... exit_group resumed>) = ? [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 636] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 310] <... openat resumed>) = 3 [pid 636] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... futex resumed>) = 0 [pid 631] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 631] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] <... futex resumed>) = 1 [pid 636] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 636] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... futex resumed>) = 0 [pid 631] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 631] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] +++ exited with 0 +++ [pid 626] +++ exited with 0 +++ [pid 310] ioctl(3, LOOP_CLR_FD [pid 636] <... futex resumed>) = 1 [pid 310] <... ioctl resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=626, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 310] close(3 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 636] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 310] <... close resumed>) = 0 [pid 636] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 635] ioctl(4, LOOP_SET_FD, 3 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 636] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 636] <... futex resumed>) = 1 [pid 635] ioctl(4, LOOP_CLR_FD [pid 631] <... futex resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 636] read(-1 [pid 635] <... ioctl resumed>) = 0 [pid 631] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 631] <... futex resumed>) = 0 [pid 636] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] <... futex resumed>) = 0 [pid 631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 636] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 631] exit_group(0 [pid 636] <... futex resumed>) = ? [pid 631] <... exit_group resumed>) = ? [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 638 [pid 636] +++ exited with 0 +++ [pid 631] +++ exited with 0 +++ [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 637] set_robust_list(0x7f5cd2d209a0, 24 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=631, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 637] <... set_robust_list resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 637] rt_sigprocmask(SIG_SETMASK, [] [pid 635] ioctl(4, LOOP_SET_FD, 3 [pid 637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] memfd_create("syzkaller", 0 [pid 635] close(4 [pid 637] <... memfd_create resumed>) = 3 [pid 635] <... close resumed>) = 0 [pid 637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] close(3 [pid 637] <... mmap resumed>) = 0x7f5cca900000 [pid 635] <... close resumed>) = 0 [pid 637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 635] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = 0 [pid 632] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 632] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... futex resumed>) = 1 [pid 635] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 635] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = 0 [pid 632] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 632] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... futex resumed>) = 1 [pid 635] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 635] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = 0 [pid 632] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 632] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... futex resumed>) = 1 [pid 635] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 635] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = 0 [pid 632] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... futex resumed>) = 1 [pid 632] <... futex resumed>) = 0 [pid 635] read(-1 [pid 632] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 635] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 632] <... futex resumed>) = 0 [pid 635] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 632] exit_group(0 [pid 635] <... futex resumed>) = ? [pid 632] <... exit_group resumed>) = ? [pid 635] +++ exited with 0 +++ [pid 632] +++ exited with 0 +++ [pid 309] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=632, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 309] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] close(3 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 639 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 637] <... write resumed>) = 1048576 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 640 [pid 637] munmap(0x7f5cca900000, 138412032 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 637] <... munmap resumed>) = 0 [pid 637] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 637] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 637] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 639 attached [pid 639] set_robust_list(0x55555618f760, 24) = 0 [pid 639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 639] setpgid(0, 0) = 0 [pid 639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 639] write(3, "1000", 4) = 4 ci2-android-6-1/strace-static-x86_64: Process 640 attached [pid 639] close(3) = 0 [pid 640] set_robust_list(0x55555618f760, 24 [pid 637] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 637] close(4) = 0 [pid 637] close(3 [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 641 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 637] <... close resumed>) = 0 [pid 639] write(1, "executing program\n", 18) = 18 executing program [pid 640] <... set_robust_list resumed>) = 0 [pid 639] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] rt_sigprocmask(SIG_SETMASK, [] [pid 639] <... futex resumed>) = 0 [pid 639] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 639] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 639] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 640] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 639] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 640] <... prctl resumed>) = 0 [pid 640] setpgid(0, 0) = 0 [pid 639] rt_sigprocmask(SIG_BLOCK, ~[] [pid 640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 639] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 639] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 640] <... openat resumed>) = 3 [pid 639] <... clone3 resumed> => {parent_tid=[642]}, 88) = 642 [pid 639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 640] write(3, "1000", 4 [pid 639] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... write resumed>) = 4 [pid 639] <... futex resumed>) = 0 [pid 640] close(3 [pid 639] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 640] <... close resumed>) = 0 [pid 640] write(1, "executing program\n", 18) = 18 [pid 640] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 640] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 640] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 640] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 640] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 637] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 executing program [pid 634] <... futex resumed>) = 0 [pid 637] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 634] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 634] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 637] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... clone3 resumed> => {parent_tid=[643]}, 88) = 643 [pid 637] <... futex resumed>) = 1 [pid 634] <... futex resumed>) = 0 [pid 640] rt_sigprocmask(SIG_SETMASK, [] [pid 634] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 634] <... futex resumed>) = 0 [pid 637] truncate("./file1", 36262 [pid 634] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 637] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 634] <... futex resumed>) = 0 [pid 634] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 634] <... futex resumed>) = 0 [pid 637] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 634] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 634] <... futex resumed>) = 0 [pid 637] read(-1 [pid 634] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 634] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 637] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 634] <... futex resumed>) = 0 [pid 637] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULLci2-android-6-1/strace-static-x86_64: Process 641 attached [pid 634] exit_group(0 [pid 641] set_robust_list(0x55555618f760, 24 [pid 634] <... exit_group resumed>) = ? [pid 637] <... futex resumed>) = ? [pid 637] +++ exited with 0 +++ [pid 634] +++ exited with 0 +++ [pid 641] <... set_robust_list resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=634, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 641] setpgid(0, 0) = 0 [pid 641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 641] write(3, "1000", 4) = 4 [pid 641] close(3) = 0 [pid 641] write(1, "executing program\n", 18) = 18 [pid 641] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 641] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 641] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 641] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 641] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 641] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[644]}, 88) = 644 [pid 641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 641] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 643 attached [pid 643] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 643] memfd_create("syzkaller", 0) = 3 [pid 643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 645 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 638 attached [pid 643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 644 attached [pid 644] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 644] memfd_create("syzkaller", 0 [pid 638] set_robust_list(0x55555618f760, 24 [pid 644] <... memfd_create resumed>) = 3 [pid 644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 638] <... set_robust_list resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 642 attached [pid 638] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 645 attached , NULL, 8) = 0 [pid 642] set_robust_list(0x7f5cd2d209a0, 24 [pid 638] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 642] <... set_robust_list resumed>) = 0 [pid 645] set_robust_list(0x55555618f760, 24 [pid 638] <... prctl resumed>) = 0 [pid 642] rt_sigprocmask(SIG_SETMASK, [] [pid 645] <... set_robust_list resumed>) = 0 [pid 643] <... write resumed>) = 1048576 [pid 644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 643] munmap(0x7f5cca900000, 138412032) = 0 [pid 643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 643] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 643] ioctl(4, LOOP_CLR_FD) = 0 [pid 643] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 643] close(4) = 0 [pid 643] close(3 [pid 638] setpgid(0, 0) = 0 [pid 638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 642] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 645] rt_sigprocmask(SIG_SETMASK, [] [pid 638] <... openat resumed>) = 3 [pid 638] write(3, "1000", 4 [pid 642] memfd_create("syzkaller", 0 [pid 638] <... write resumed>) = 4 [pid 645] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 642] <... memfd_create resumed>) = 3 [pid 638] close(3) = 0 [pid 642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 645] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 638] write(1, "executing program\n", 18) = 18 executing program [pid 638] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... prctl resumed>) = 0 [pid 642] <... mmap resumed>) = 0x7f5cca900000 [pid 638] <... futex resumed>) = 0 [pid 643] <... close resumed>) = 0 [pid 644] <... write resumed>) = 1048576 [pid 643] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 640] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... futex resumed>) = 1 [pid 643] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 643] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 640] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... futex resumed>) = 1 [pid 643] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 643] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 640] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... futex resumed>) = 1 [pid 643] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 643] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 640] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... futex resumed>) = 1 [pid 643] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 643] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... futex resumed>) = 0 [pid 640] exit_group(0 [pid 642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 640] <... exit_group resumed>) = ? [pid 638] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 643] <... futex resumed>) = ? [pid 638] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 645] setpgid(0, 0 [pid 638] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 645] <... setpgid resumed>) = 0 [pid 638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 645] <... openat resumed>) = 3 [pid 638] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 645] write(3, "1000", 4 [pid 643] +++ exited with 0 +++ [pid 640] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=640, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 638] <... mprotect resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 645] <... write resumed>) = 4 [pid 638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 645] close(3 [pid 644] munmap(0x7f5cca900000, 138412032 [pid 645] <... close resumed>) = 0 [pid 638] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 645] write(1, "executing program\n", 18 [pid 644] <... munmap resumed>) = 0 [pid 644] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 645] <... write resumed>) = 18 [pid 638] <... clone3 resumed> => {parent_tid=[646]}, 88) = 646 executing program [pid 644] <... openat resumed>) = 4 [pid 644] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 644] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 646 attached [pid 638] rt_sigprocmask(SIG_SETMASK, [] [pid 645] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 638] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = 0 [pid 638] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 645] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 646] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 646] rt_sigprocmask(SIG_SETMASK, [] [pid 645] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 646] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 646] memfd_create("syzkaller", 0) = 3 [pid 646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 645] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 307] <... restart_syscall resumed>) = 0 [pid 645] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 644] ioctl(4, LOOP_SET_FD, 3 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 645] <... mprotect resumed>) = 0 [pid 645] rt_sigprocmask(SIG_BLOCK, ~[] [pid 644] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 645] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 644] close(4 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 644] <... close resumed>) = 0 [pid 644] close(3 [pid 645] <... clone3 resumed> => {parent_tid=[647]}, 88) = 647 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 648 [pid 645] rt_sigprocmask(SIG_SETMASK, [] [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 645] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 645] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 645] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 644] <... close resumed>) = 0 [pid 644] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 644] <... futex resumed>) = 1 [pid 644] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 644] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 644] <... futex resumed>) = 1 [pid 644] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 644] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 644] <... futex resumed>) = 1 [pid 644] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 644] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 644] <... futex resumed>) = 1 [pid 644] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 644] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] exit_group(0) = ? [pid 644] <... futex resumed>) = ? [pid 644] +++ exited with 0 +++ [pid 641] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=641, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 647 attached [pid 647] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 647] memfd_create("syzkaller", 0) = 3 [pid 647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 642] <... write resumed>) = 1048576 [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 649 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 648 attached [pid 648] set_robust_list(0x55555618f760, 24) = 0 [pid 648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 648] setpgid(0, 0) = 0 [pid 648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 648] write(3, "1000", 4) = 4 [pid 648] close(3) = 0 [pid 648] write(1, "executing program\n", 18) = 18 [pid 648] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 648] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 648] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 648] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program [pid 648] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[650]}, 88) = 650 [pid 648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 648] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 642] munmap(0x7f5cca900000, 138412032) = 0 [pid 642] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 642] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 649 attached [pid 649] set_robust_list(0x55555618f760, 24 [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ci2-android-6-1/strace-static-x86_64: Process 650 attached [pid 649] <... set_robust_list resumed>) = 0 [pid 649] rt_sigprocmask(SIG_SETMASK, [] [pid 650] set_robust_list(0x7f5cd2d209a0, 24 [pid 642] ioctl(4, LOOP_CLR_FD) = 0 [pid 650] <... set_robust_list resumed>) = 0 [pid 649] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 649] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 650] rt_sigprocmask(SIG_SETMASK, [] [pid 649] <... prctl resumed>) = 0 [pid 650] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 649] setpgid(0, 0) = 0 [pid 649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 650] memfd_create("syzkaller", 0) = 3 [pid 650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 649] <... openat resumed>) = 3 [pid 642] ioctl(4, LOOP_SET_FD, 3 [pid 649] write(3, "1000", 4) = 4 [pid 649] close(3) = 0 [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] write(1, "executing program\n", 18) = 18 executing program [pid 649] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 649] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 642] close(4 [pid 649] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 649] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 642] <... close resumed>) = 0 [pid 649] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 649] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 649] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 649] rt_sigprocmask(SIG_BLOCK, ~[] [pid 647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 642] close(3 [pid 649] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 649] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[651]}, 88) = 651 [pid 649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 649] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 649] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 647] <... write resumed>) = 1048576 [pid 647] munmap(0x7f5cca900000, 138412032) = 0 [pid 647] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 642] <... close resumed>) = 0 [pid 647] <... openat resumed>) = 4 [pid 647] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 647] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 651 attached [pid 651] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 651] memfd_create("syzkaller", 0 [pid 642] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] <... memfd_create resumed>) = 3 [pid 651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 642] <... futex resumed>) = 1 [pid 639] <... futex resumed>) = 0 [pid 639] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 647] close(4) = 0 [pid 642] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 647] close(3 [pid 646] <... write resumed>) = 1048576 [pid 642] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 642] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 639] <... futex resumed>) = 0 [pid 642] truncate("./file1", 36262 [pid 639] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 642] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 646] munmap(0x7f5cca900000, 138412032 [pid 642] <... futex resumed>) = 1 [pid 639] <... futex resumed>) = 0 [pid 642] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 639] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 642] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 639] <... futex resumed>) = 0 [pid 642] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 639] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 642] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 646] <... munmap resumed>) = 0 [pid 639] <... futex resumed>) = 0 [pid 642] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 639] exit_group(0) = ? [pid 642] <... futex resumed>) = ? [pid 646] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 642] +++ exited with 0 +++ [pid 639] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=639, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 652 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 646] <... openat resumed>) = 4 [pid 646] ioctl(4, LOOP_SET_FD, 3 [pid 647] <... close resumed>) = 0 [pid 647] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] <... futex resumed>) = 0 [pid 647] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 645] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 646] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 645] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] ioctl(4, LOOP_CLR_FD [pid 647] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 647] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] <... futex resumed>) = 0 [pid 646] <... ioctl resumed>) = 0 [pid 647] truncate("./file1", 36262 [pid 645] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 645] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 647] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] <... futex resumed>) = 0 [pid 647] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 645] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 645] <... futex resumed>) = 0 [pid 647] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] <... futex resumed>) = 0 [pid 645] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] read(-1 [pid 645] <... futex resumed>) = 0 [pid 647] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 645] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] <... futex resumed>) = 0 [pid 647] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] exit_group(0) = ? [pid 647] <... futex resumed>) = ? [pid 646] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 646] close(4) = 0 [pid 650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 646] close(3 [pid 647] +++ exited with 0 +++ [pid 645] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=645, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 646] <... close resumed>) = 0 [pid 651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 646] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 652 attached [pid 638] <... futex resumed>) = 0 [pid 646] <... futex resumed>) = 1 [pid 652] set_robust_list(0x55555618f760, 24 [pid 638] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 638] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] <... set_robust_list resumed>) = 0 [pid 646] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 650] <... write resumed>) = 1048576 [pid 651] <... write resumed>) = 1048576 [pid 651] munmap(0x7f5cca900000, 138412032) = 0 [pid 646] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 651] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 652] rt_sigprocmask(SIG_SETMASK, [] [pid 651] <... openat resumed>) = 4 [pid 651] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 651] ioctl(4, LOOP_CLR_FD) = 0 [pid 652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 646] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 650] munmap(0x7f5cca900000, 138412032 [pid 646] <... futex resumed>) = 1 [pid 638] <... futex resumed>) = 0 [pid 652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 646] truncate("./file1", 36262 [pid 638] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 646] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 652] <... prctl resumed>) = 0 [pid 650] <... munmap resumed>) = 0 [pid 638] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... restart_syscall resumed>) = 0 [pid 646] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] setpgid(0, 0 [pid 646] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... setpgid resumed>) = 0 [pid 646] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 638] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 646] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 638] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 646] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 646] <... futex resumed>) = 0 [pid 638] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... openat resumed>) = 3 [pid 652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 646] read(-1 [pid 638] <... futex resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 638] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 311] <... ioctl resumed>) = 0 [pid 311] close(3 [pid 646] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] <... openat resumed>) = 3 [pid 651] ioctl(4, LOOP_SET_FD, 3 [pid 650] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 646] <... futex resumed>) = 1 [pid 638] <... futex resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 638] exit_group(0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 638] <... exit_group resumed>) = ? [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 653 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 651] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 651] close(4) = 0 [pid 651] close(3) = 0 [pid 646] +++ exited with 0 +++ [pid 638] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=638, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 652] write(3, "1000", 4) = 4 [pid 652] close(3) = 0 [pid 652] write(1, "executing program\n", 18) = 18 [pid 652] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 652] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 652] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 652] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[654]}, 88) = 654 [pid 651] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] rt_sigprocmask(SIG_SETMASK, [] [pid 651] <... futex resumed>) = 1 [pid 652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 652] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 652] <... futex resumed>) = 0 executing program [pid 652] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 650] <... openat resumed>) = 4 [pid 650] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 650] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 654 attached [pid 654] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 654] memfd_create("syzkaller", 0) = 3 [pid 654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 650] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 650] close(4) = 0 [pid 650] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 649] <... futex resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 649] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 649] <... futex resumed>) = 1 [pid 649] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 651] <... futex resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 651] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 655 [pid 651] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 651] <... futex resumed>) = 1 [pid 649] <... futex resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 649] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] truncate("./file1", 36262 [pid 649] <... futex resumed>) = 0 [pid 649] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 651] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 649] <... futex resumed>) = 0 [pid 651] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 649] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 649] <... futex resumed>) = 0 [pid 651] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] <... futex resumed>) = 0 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] read(-1 [pid 649] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 649] <... futex resumed>) = 0 [pid 651] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] <... futex resumed>) = 0 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 649] exit_group(0 [pid 651] <... futex resumed>) = ? [pid 649] <... exit_group resumed>) = ? [pid 651] +++ exited with 0 +++ [pid 649] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=649, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 650] <... close resumed>) = 0 [pid 650] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 650] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 308] <... restart_syscall resumed>) = 0 [pid 648] <... futex resumed>) = 0 [pid 648] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 650] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 650] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 650] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 656 ci2-android-6-1/strace-static-x86_64: Process 653 attached [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 653] set_robust_list(0x55555618f760, 24 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 653] <... set_robust_list resumed>) = 0 [pid 650] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 655 attached [pid 653] rt_sigprocmask(SIG_SETMASK, [] [pid 648] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] set_robust_list(0x55555618f760, 24 [pid 653] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 648] <... futex resumed>) = 0 [pid 648] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 653] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 655] <... set_robust_list resumed>) = 0 [pid 650] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 650] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 648] <... futex resumed>) = 0 [pid 653] <... prctl resumed>) = 0 [pid 648] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 650] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 648] <... futex resumed>) = 0 [pid 655] rt_sigprocmask(SIG_SETMASK, [] [pid 653] setpgid(0, 0 [pid 648] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 655] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 653] <... setpgid resumed>) = 0 [pid 650] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 650] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 648] <... futex resumed>) = 0 [pid 650] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 655] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 648] <... futex resumed>) = 0 [pid 650] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 650] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 655] <... prctl resumed>) = 0 [pid 653] <... openat resumed>) = 3 [pid 650] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 648] <... futex resumed>) = 0 [pid 653] write(3, "1000", 4 [pid 655] setpgid(0, 0 [pid 648] exit_group(0) = ? [pid 650] +++ exited with 0 +++ [pid 654] <... mmap resumed>) = 0x7f5cca900000 [pid 648] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=648, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 654] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 653] <... write resumed>) = 4 [pid 655] <... setpgid resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 656 attached [pid 656] set_robust_list(0x55555618f760, 24) = 0 [pid 656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 656] setpgid(0, 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 653] close(3 [pid 655] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 657 [pid 655] write(3, "1000", 4 [pid 653] <... close resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 655] <... write resumed>) = 4 executing program [pid 653] write(1, "executing program\n", 18 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 655] close(3 [pid 653] <... write resumed>) = 18 [pid 655] <... close resumed>) = 0 [pid 653] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] write(1, "executing program\n", 18 [pid 653] <... futex resumed>) = 0 [pid 655] <... write resumed>) = 18 executing program [pid 653] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 655] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 655] <... futex resumed>) = 0 [pid 653] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 655] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 653] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 655] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 653] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 655] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 653] <... mmap resumed>) = 0x7f5cd2d00000 [pid 655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 653] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 656] <... setpgid resumed>) = 0 [pid 655] <... mmap resumed>) = 0x7f5cd2d00000 [pid 653] <... mprotect resumed>) = 0 [pid 655] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 653] rt_sigprocmask(SIG_BLOCK, ~[] [pid 655] <... mprotect resumed>) = 0 [pid 653] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 655] rt_sigprocmask(SIG_BLOCK, ~[] [pid 653] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 655] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 655] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 653] <... clone3 resumed> => {parent_tid=[658]}, 88) = 658 [pid 653] rt_sigprocmask(SIG_SETMASK, [] [pid 655] <... clone3 resumed> => {parent_tid=[659]}, 88) = 659 [pid 653] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 655] rt_sigprocmask(SIG_SETMASK, [] [pid 653] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 653] <... futex resumed>) = 0 [pid 655] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 655] <... futex resumed>) = 0 [pid 656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 655] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 656] <... openat resumed>) = 3 [pid 656] write(3, "1000", 4) = 4 [pid 656] close(3) = 0 [pid 656] write(1, "executing program\n", 18) = 18 executing program [pid 656] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 654] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 659 attached ci2-android-6-1/strace-static-x86_64: Process 658 attached [pid 656] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITEci2-android-6-1/strace-static-x86_64: Process 657 attached [pid 658] set_robust_list(0x7f5cd2d209a0, 24 [pid 659] set_robust_list(0x7f5cd2d209a0, 24 [pid 658] <... set_robust_list resumed>) = 0 [pid 659] <... set_robust_list resumed>) = 0 [pid 658] rt_sigprocmask(SIG_SETMASK, [] [pid 657] set_robust_list(0x55555618f760, 24 [pid 659] rt_sigprocmask(SIG_SETMASK, [] [pid 658] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 657] <... set_robust_list resumed>) = 0 [pid 654] munmap(0x7f5cca900000, 138412032 [pid 659] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 658] memfd_create("syzkaller", 0 [pid 656] <... mprotect resumed>) = 0 [pid 659] memfd_create("syzkaller", 0) = 3 [pid 657] rt_sigprocmask(SIG_SETMASK, [] [pid 656] rt_sigprocmask(SIG_BLOCK, ~[] [pid 659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 658] <... memfd_create resumed>) = 3 [pid 657] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 659] <... mmap resumed>) = 0x7f5cca900000 [pid 658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 656] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[660]}, 88) = 660 [pid 656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 656] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 660 attached [pid 660] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 660] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 660] memfd_create("syzkaller", 0) = 3 [pid 660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 658] <... mmap resumed>) = 0x7f5cca900000 [pid 654] <... munmap resumed>) = 0 [pid 660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 654] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 654] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 654] ioctl(4, LOOP_CLR_FD [pid 658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 657] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 654] <... ioctl resumed>) = 0 [pid 659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 657] <... prctl resumed>) = 0 [pid 654] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 654] close(4) = 0 [pid 654] close(3) = 0 [pid 654] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] setpgid(0, 0 [pid 652] <... futex resumed>) = 0 [pid 652] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 654] <... futex resumed>) = 1 [pid 654] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 660] <... write resumed>) = 1048576 [pid 654] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... setpgid resumed>) = 0 [pid 652] <... futex resumed>) = 0 [pid 652] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 654] <... futex resumed>) = 1 [pid 654] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 654] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] <... futex resumed>) = 0 [pid 652] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 654] <... futex resumed>) = 1 [pid 654] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 654] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 652] <... futex resumed>) = 0 [pid 657] <... openat resumed>) = 3 [pid 657] write(3, "1000", 4 [pid 652] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... write resumed>) = 4 [pid 652] <... futex resumed>) = 0 [pid 652] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} executing program [pid 657] close(3) = 0 [pid 657] write(1, "executing program\n", 18) = 18 [pid 657] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 657] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 657] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 657] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 657] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 657] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 654] <... futex resumed>) = 1 [pid 654] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 654] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] <... futex resumed>) = 0 [pid 652] exit_group(0) = ? [pid 654] <... futex resumed>) = ? [pid 654] +++ exited with 0 +++ [pid 652] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=652, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 660] munmap(0x7f5cca900000, 138412032) = 0 [pid 660] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 658] <... write resumed>) = 1048576 [pid 657] <... clone3 resumed> => {parent_tid=[661]}, 88) = 661 [pid 657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 657] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 657] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 660] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 660] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 661 attached [pid 661] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 661] memfd_create("syzkaller", 0) = 3 [pid 661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 660] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 660] close(4) = 0 [pid 660] close(3) = 0 [pid 661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 662 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 660] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... futex resumed>) = 1 [pid 660] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 660] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... futex resumed>) = 1 [pid 660] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 660] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... futex resumed>) = 1 [pid 660] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 660] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... futex resumed>) = 1 [pid 660] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 660] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 0 [pid 656] exit_group(0) = ? [pid 660] <... futex resumed>) = ? [pid 659] <... write resumed>) = 1048576 [pid 658] munmap(0x7f5cca900000, 138412032 [pid 660] +++ exited with 0 +++ [pid 656] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=656, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 658] <... munmap resumed>) = 0 [pid 659] munmap(0x7f5cca900000, 138412032 [pid 658] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 659] <... munmap resumed>) = 0 [pid 658] <... openat resumed>) = 4 [pid 659] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 658] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 662 attached ) = -1 EBUSY (Device or resource busy) [pid 659] <... openat resumed>) = 4 [pid 658] ioctl(4, LOOP_CLR_FD [pid 662] set_robust_list(0x55555618f760, 24 [pid 659] ioctl(4, LOOP_SET_FD, 3 [pid 658] <... ioctl resumed>) = 0 [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 659] ioctl(4, LOOP_CLR_FD) = 0 [pid 662] <... set_robust_list resumed>) = 0 [pid 662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 662] setpgid(0, 0) = 0 [pid 662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 659] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 659] close(4) = 0 [pid 659] close(3 [pid 662] <... openat resumed>) = 3 [pid 662] write(3, "1000", 4) = 4 [pid 662] close(3) = 0 [pid 662] write(1, "executing program\n", 18) = 18 executing program [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 663 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 662] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 659] <... close resumed>) = 0 [pid 662] <... clone3 resumed> => {parent_tid=[664]}, 88) = 664 [pid 662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 662] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 659] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 655] <... futex resumed>) = 0 [pid 655] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 658] ioctl(4, LOOP_SET_FD, 3 [pid 655] <... futex resumed>) = 0 [pid 655] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 659] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 655] <... futex resumed>) = 0 [pid 655] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 655] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 659] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 655] <... futex resumed>) = 0 [pid 659] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 655] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 659] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULLci2-android-6-1/strace-static-x86_64: Process 663 attached [pid 663] set_robust_list(0x55555618f760, 24) = 0 [pid 655] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 655] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 659] <... futex resumed>) = 0 [pid 655] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 659] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 655] <... futex resumed>) = 0 [pid 659] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] exit_group(0) = ? [pid 659] <... futex resumed>) = ? [pid 659] +++ exited with 0 +++ [pid 663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 655] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=655, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 663] setpgid(0, 0) = 0 [pid 663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 663] write(3, "1000", 4) = 4 [pid 663] close(3) = 0 [pid 663] write(1, "executing program\n", 18) = 18 executing program [pid 663] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 663] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 663] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 663] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 663] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[665]}, 88) = 665 [pid 663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 663] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 664 attached [pid 664] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 664] memfd_create("syzkaller", 0) = 3 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 658] close(4) = 0 [pid 664] <... mmap resumed>) = 0x7f5cca900000 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 666 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 665 attached [pid 665] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 665] memfd_create("syzkaller", 0) = 3 [pid 665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 658] close(3 [pid 665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 658] <... close resumed>) = 0 [pid 658] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 666 attached [pid 666] set_robust_list(0x55555618f760, 24) = 0 [pid 666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 658] <... futex resumed>) = 1 [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 666] setpgid(0, 0) = 0 [pid 666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 666] write(3, "1000", 4) = 4 [pid 666] close(3) = 0 [pid 666] write(1, "executing program\n", 18) = 18 executing program [pid 666] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 666] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 666] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 666] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 666] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 658] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... clone3 resumed> => {parent_tid=[667]}, 88) = 667 [pid 666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 666] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 661] <... write resumed>) = 1048576 [pid 658] <... futex resumed>) = 1 [pid 653] <... futex resumed>) = 0 [pid 658] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] truncate("./file1", 36262 [pid 661] munmap(0x7f5cca900000, 138412032 [pid 658] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 658] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 658] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 658] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 653] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... munmap resumed>) = 0 [pid 658] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 664] munmap(0x7f5cca900000, 138412032 [pid 661] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 658] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 667 attached [pid 661] <... openat resumed>) = 4 [pid 658] <... futex resumed>) = 1 [pid 661] ioctl(4, LOOP_SET_FD, 3 [pid 653] <... futex resumed>) = 0 [pid 661] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] ioctl(4, LOOP_CLR_FD [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 661] <... ioctl resumed>) = 0 [pid 658] read(-1 [pid 653] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 664] <... munmap resumed>) = 0 [pid 658] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] set_robust_list(0x7f5cd2d209a0, 24 [pid 664] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 658] <... futex resumed>) = 1 [pid 653] <... futex resumed>) = 0 [pid 664] <... openat resumed>) = 4 [pid 658] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] exit_group(0 [pid 667] <... set_robust_list resumed>) = 0 [pid 664] ioctl(4, LOOP_SET_FD, 3 [pid 658] <... futex resumed>) = ? [pid 653] <... exit_group resumed>) = ? [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] rt_sigprocmask(SIG_SETMASK, [] [pid 658] +++ exited with 0 +++ [pid 653] +++ exited with 0 +++ [pid 667] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 664] ioctl(4, LOOP_CLR_FD [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=653, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 664] <... ioctl resumed>) = 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 667] memfd_create("syzkaller", 0) = 3 [pid 661] ioctl(4, LOOP_SET_FD, 3 [pid 667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 661] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] <... mmap resumed>) = 0x7f5cca900000 [pid 661] close(4) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 668 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 665] <... write resumed>) = 1048576 [pid 665] munmap(0x7f5cca900000, 138412032) = 0 [pid 665] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 665] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 665] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 668 attached [pid 668] set_robust_list(0x55555618f760, 24) = 0 [pid 668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 665] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 665] close(4) = 0 [pid 665] close(3 [pid 661] close(3 [pid 665] <... close resumed>) = 0 [pid 668] setpgid(0, 0) = 0 [pid 668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 668] write(3, "1000", 4) = 4 [pid 668] close(3) = 0 [pid 668] write(1, "executing program\n", 18) = 18 [pid 668] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 668] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 668] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 668] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 668] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 668] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 668] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 665] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... close resumed>) = 0 [pid 664] ioctl(4, LOOP_SET_FD, 3 [pid 661] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 665] <... futex resumed>) = 1 [pid 665] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 665] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 665] <... futex resumed>) = 1 [pid 665] truncate("./file1", 36262 [pid 668] <... clone3 resumed> => {parent_tid=[669]}, 88) = 669 [pid 665] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 668] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 665] <... futex resumed>) = 1 [pid 665] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 665] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 665] <... futex resumed>) = 1 [pid 665] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 665] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 663] exit_group(0) = ? [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] <... futex resumed>) = 1 [pid 657] <... futex resumed>) = 0 [pid 664] close(4 [pid 661] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 657] <... futex resumed>) = 0 [pid 664] <... close resumed>) = 0 [pid 661] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 657] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 665] <... futex resumed>) = ? [pid 661] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 664] close(3 [pid 661] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 657] <... futex resumed>) = 0 [pid 661] truncate("./file1", 36262 [pid 657] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 661] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 657] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] +++ exited with 0 +++ [pid 663] +++ exited with 0 +++ [pid 661] <... futex resumed>) = 1 [pid 657] <... futex resumed>) = 0 [pid 657] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 657] <... futex resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 661] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 657] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 661] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 669 attached [pid 669] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 669] memfd_create("syzkaller", 0) = 3 [pid 669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 664] <... close resumed>) = 0 [pid 661] <... futex resumed>) = 1 [pid 657] <... futex resumed>) = 0 [pid 661] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 657] <... futex resumed>) = 0 [pid 661] read(-1 [pid 657] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 661] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 657] <... futex resumed>) = 0 [pid 661] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] exit_group(0) = ? [pid 661] <... futex resumed>) = ? [pid 669] <... mmap resumed>) = 0x7f5cca900000 [pid 661] +++ exited with 0 +++ [pid 657] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=657, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 670 [pid 664] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 664] <... futex resumed>) = 1 [pid 662] <... futex resumed>) = 0 [pid 662] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 662] <... futex resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... openat resumed>) = 3 [pid 664] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 308] ioctl(3, LOOP_CLR_FD [pid 664] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 664] <... futex resumed>) = 0 [pid 664] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 662] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] <... close resumed>) = 0 [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 662] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 662] <... futex resumed>) = 0 [pid 664] truncate("./file1", 36262 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 664] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 664] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 671 [pid 664] <... futex resumed>) = 1 [pid 662] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 664] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 662] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 664] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 662] <... futex resumed>) = 0 [pid 664] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 662] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 670 attached [pid 670] set_robust_list(0x55555618f760, 24) = 0 [pid 670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 670] setpgid(0, 0) = 0 [pid 670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 670] write(3, "1000", 4) = 4 [pid 670] close(3 [pid 664] <... futex resumed>) = 1 [pid 662] <... futex resumed>) = 0 [pid 662] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=44000000} [pid 670] <... close resumed>) = 0 [pid 670] write(1, "executing program\n", 18) = 18 executing program [pid 670] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 670] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 670] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 670] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[672]}, 88) = 672 [pid 670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 670] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 664] read(-1 [pid 669] <... write resumed>) = 1048576 [pid 664] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 664] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 664] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 662] <... futex resumed>) = 0 [pid 662] exit_group(0 [pid 664] <... futex resumed>) = ? [pid 662] <... exit_group resumed>) = ? [pid 664] +++ exited with 0 +++ [pid 662] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=662, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 673 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 669] munmap(0x7f5cca900000, 138412032) = 0 [pid 669] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 669] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 669] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 673 attached [pid 673] set_robust_list(0x55555618f760, 24) = 0 [pid 673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 673] prctl(PR_SET_PDEATHSIG, SIGKILLci2-android-6-1/strace-static-x86_64: Process 671 attached ) = 0 [pid 669] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 669] close(4) = 0 [pid 669] close(3 [pid 671] set_robust_list(0x55555618f760, 24 [pid 669] <... close resumed>) = 0 [pid 669] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 668] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 668] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] <... futex resumed>) = 1 [pid 669] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 669] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 668] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 668] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] <... futex resumed>) = 1 [pid 669] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 669] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 668] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 668] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] <... futex resumed>) = 1 [pid 671] <... set_robust_list resumed>) = 0 [pid 669] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 669] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 669] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 668] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 668] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] <... futex resumed>) = 1 [pid 669] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 669] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 668] exit_group(0) = ? [pid 669] <... futex resumed>) = ? [pid 669] +++ exited with 0 +++ [pid 668] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=668, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 673] setpgid(0, 0 [pid 667] <... write resumed>) = 1048576 [pid 671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 667] munmap(0x7f5cca900000, 138412032 [pid 671] setpgid(0, 0) = 0 [pid 673] <... setpgid resumed>) = 0 [pid 671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 667] <... munmap resumed>) = 0 [pid 671] write(3, "1000", 4) = 4 [pid 667] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 671] close(3) = 0 [pid 667] <... openat resumed>) = 4 [pid 671] write(1, "executing program\n", 18) = 18 executing program [pid 667] ioctl(4, LOOP_SET_FD, 3 [pid 671] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 671] <... futex resumed>) = 0 [pid 671] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 667] ioctl(4, LOOP_CLR_FD [pid 673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ci2-android-6-1/strace-static-x86_64: Process 672 attached [pid 672] set_robust_list(0x7f5cd2d209a0, 24 [pid 673] write(3, "1000", 4 [pid 672] <... set_robust_list resumed>) = 0 [pid 673] <... write resumed>) = 4 [pid 672] rt_sigprocmask(SIG_SETMASK, [] [pid 673] close(3 [pid 672] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 672] memfd_create("syzkaller", 0 [pid 673] <... close resumed>) = 0 [pid 671] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 673] write(1, "executing program\n", 18) = 18 executing program [pid 673] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] <... memfd_create resumed>) = 3 [pid 673] <... futex resumed>) = 0 [pid 673] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 673] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 672] <... mmap resumed>) = 0x7f5cca900000 [pid 673] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 674 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 673] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 673] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 673] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 671] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 667] <... ioctl resumed>) = 0 [pid 671] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 671] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 671] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 671] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 671] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 673] <... clone3 resumed> => {parent_tid=[675]}, 88) = 675 [pid 671] <... clone3 resumed> => {parent_tid=[676]}, 88) = 676 [pid 673] rt_sigprocmask(SIG_SETMASK, [] [pid 671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 673] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 671] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] ioctl(4, LOOP_SET_FD, 3 [pid 671] <... futex resumed>) = 0 [pid 667] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 671] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 673] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] close(4 [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 667] <... close resumed>) = 0 [pid 667] close(3 [pid 672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 667] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 675 attached [pid 675] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 675] memfd_create("syzkaller", 0) = 3 [pid 675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 667] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 674 attached ) = 1 [pid 666] <... futex resumed>) = 0 [pid 667] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] set_robust_list(0x55555618f760, 24 [pid 666] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 666] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... futex resumed>) = 0 [pid 667] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 667] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = 0 [pid 666] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... futex resumed>) = 1 [pid 667] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 667] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = 0 [pid 666] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... futex resumed>) = 1 [pid 667] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 667] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = 0 [pid 666] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... futex resumed>) = 1 [pid 667] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 667] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = 0 [pid 666] exit_group(0) = ? [pid 667] <... futex resumed>) = ? [pid 667] +++ exited with 0 +++ [pid 666] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=666, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 672] <... write resumed>) = 1048576 [pid 672] munmap(0x7f5cca900000, 138412032) = 0 [pid 672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 672] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 677 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 672] ioctl(4, LOOP_CLR_FD) = 0 [pid 672] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 672] close(4) = 0 [pid 672] close(3ci2-android-6-1/strace-static-x86_64: Process 676 attached [pid 674] <... set_robust_list resumed>) = 0 [pid 672] <... close resumed>) = 0 [pid 672] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] <... futex resumed>) = 1 ci2-android-6-1/strace-static-x86_64: Process 677 attached [pid 672] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 674] rt_sigprocmask(SIG_SETMASK, [] [pid 676] set_robust_list(0x7f5cd2d209a0, 24 [pid 674] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 676] <... set_robust_list resumed>) = 0 [pid 676] rt_sigprocmask(SIG_SETMASK, [] [pid 674] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 676] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 674] <... prctl resumed>) = 0 [pid 676] memfd_create("syzkaller", 0 [pid 674] setpgid(0, 0 [pid 676] <... memfd_create resumed>) = 3 [pid 674] <... setpgid resumed>) = 0 [pid 676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 676] <... mmap resumed>) = 0x7f5cca900000 [pid 674] <... openat resumed>) = 3 [pid 677] set_robust_list(0x55555618f760, 24) = 0 [pid 672] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] rt_sigprocmask(SIG_SETMASK, [] [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] <... futex resumed>) = 1 [pid 672] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 672] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] <... futex resumed>) = 1 [pid 677] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 672] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 677] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 672] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 672] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] <... futex resumed>) = 1 [pid 672] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 672] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = 0 [pid 670] exit_group(0) = ? [pid 676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 674] write(3, "1000", 4) = 4 [pid 674] close(3) = 0 [pid 674] write(1, "executing program\n", 18) = 18 executing program [pid 674] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 674] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 672] <... futex resumed>) = ? [pid 674] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 674] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 674] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 677] <... prctl resumed>) = 0 [pid 674] <... mprotect resumed>) = 0 [pid 677] setpgid(0, 0 [pid 674] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 674] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[678]}, 88) = 678 [pid 674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 674] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 674] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 672] +++ exited with 0 +++ [pid 670] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=670, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 677] <... setpgid resumed>) = 0 [pid 677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 675] <... write resumed>) = 1048576 [pid 677] write(3, "1000", 4) = 4 [pid 677] close(3) = 0 [pid 677] write(1, "executing program\n", 18) = 18 executing program [pid 677] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 677] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 677] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 677] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 677] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 677] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[679]}, 88) = 679 [pid 677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 677] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 675] munmap(0x7f5cca900000, 138412032) = 0 [pid 675] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 675] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 675] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 678 attached [pid 678] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 678] memfd_create("syzkaller", 0) = 3 [pid 678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 680 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 675] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 675] close(4) = 0 [pid 675] close(3 [pid 678] <... mmap resumed>) = 0x7f5cca900000 [pid 676] <... write resumed>) = 1048576 [pid 675] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 679 attached [pid 679] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 679] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 679] memfd_create("syzkaller", 0) = 3 [pid 679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 675] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] <... mmap resumed>) = 0x7f5cca900000 [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 675] <... futex resumed>) = 1 [pid 675] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 675] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 675] <... futex resumed>) = 1 [pid 675] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 675] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 675] <... futex resumed>) = 1 [pid 675] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 675] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 675] <... futex resumed>) = 1 [pid 675] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 675] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] <... futex resumed>) = 0 [pid 673] exit_group(0) = ? [pid 675] <... futex resumed>) = ? [pid 675] +++ exited with 0 +++ [pid 673] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=673, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 681 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 680 attached [pid 678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 680] set_robust_list(0x55555618f760, 24) = 0 [pid 680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 680] setpgid(0, 0) = 0 [pid 680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 680] write(3, "1000", 4) = 4 [pid 680] close(3) = 0 [pid 680] write(1, "executing program\n", 18) = 18 [pid 680] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 executing program [pid 680] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[682]}, 88) = 682 [pid 680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 680] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 681 attached [pid 681] set_robust_list(0x55555618f760, 24) = 0 [pid 681] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 681] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 676] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 682 attached [pid 679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 676] <... munmap resumed>) = 0 [pid 682] set_robust_list(0x7f5cd2d209a0, 24 [pid 676] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 682] <... set_robust_list resumed>) = 0 [pid 676] <... openat resumed>) = 4 [pid 682] rt_sigprocmask(SIG_SETMASK, [] [pid 676] ioctl(4, LOOP_SET_FD, 3 [pid 682] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] <... prctl resumed>) = 0 [pid 682] memfd_create("syzkaller", 0 [pid 676] ioctl(4, LOOP_CLR_FD [pid 681] setpgid(0, 0 [pid 682] <... memfd_create resumed>) = 3 [pid 676] <... ioctl resumed>) = 0 [pid 682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 681] <... setpgid resumed>) = 0 [pid 682] <... mmap resumed>) = 0x7f5cca900000 [pid 681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 681] write(3, "1000", 4) = 4 [pid 681] close(3) = 0 [pid 681] write(1, "executing program\n", 18) = 18 [pid 681] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 681] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 676] ioctl(4, LOOP_SET_FD, 3 [pid 681] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 676] close(4 [pid 681] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 676] <... close resumed>) = 0 [pid 681] <... mmap resumed>) = 0x7f5cd2d00000 [pid 681] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 681] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 681] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 679] <... write resumed>) = 1048576 [pid 676] close(3 [pid 681] <... clone3 resumed> => {parent_tid=[683]}, 88) = 683 [pid 681] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 681] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 681] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 679] munmap(0x7f5cca900000, 138412032) = 0 [pid 679] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 679] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) ci2-android-6-1/strace-static-x86_64: Process 683 attached [pid 679] ioctl(4, LOOP_CLR_FD [pid 683] set_robust_list(0x7f5cd2d209a0, 24 [pid 676] <... close resumed>) = 0 [pid 676] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 671] <... futex resumed>) = 0 [pid 676] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 676] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 671] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 676] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 671] <... futex resumed>) = 0 [pid 676] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 676] truncate("./file1", 36262 [pid 671] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 676] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 671] <... futex resumed>) = 0 [pid 676] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 676] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 671] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 676] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 671] <... futex resumed>) = 0 [pid 676] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 676] read(-1 [pid 671] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 676] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 671] <... futex resumed>) = 0 [pid 676] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] exit_group(0) = ? [pid 676] <... futex resumed>) = ? [pid 679] <... ioctl resumed>) = 0 [pid 683] <... set_robust_list resumed>) = 0 [pid 683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 676] +++ exited with 0 +++ [pid 671] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=671, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 683] memfd_create("syzkaller", 0 [pid 682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 683] <... memfd_create resumed>) = 3 [pid 683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 679] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 679] close(4) = 0 [pid 679] close(3) = 0 [pid 679] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... futex resumed>) = 0 [pid 677] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... futex resumed>) = 1 [pid 679] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 679] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... futex resumed>) = 0 [pid 677] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... futex resumed>) = 1 [pid 679] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 679] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... futex resumed>) = 0 [pid 677] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... futex resumed>) = 1 [pid 308] <... restart_syscall resumed>) = 0 [pid 679] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 679] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 677] <... futex resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 677] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... futex resumed>) = 1 [pid 679] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 679] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... futex resumed>) = 0 [pid 677] exit_group(0) = ? [pid 679] <... futex resumed>) = ? [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 679] +++ exited with 0 +++ [pid 677] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=677, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 684 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 682] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 684 attached [pid 684] set_robust_list(0x55555618f760, 24) = 0 [pid 684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 684] setpgid(0, 0) = 0 [pid 684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 685 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 684] <... openat resumed>) = 3 [pid 684] write(3, "1000", 4) = 4 [pid 684] close(3) = 0 [pid 684] write(1, "executing program\n", 18) = 18 executing program [pid 684] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 682] munmap(0x7f5cca900000, 138412032 [pid 678] <... write resumed>) = 1048576 [pid 678] munmap(0x7f5cca900000, 138412032 [pid 684] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 682] <... munmap resumed>) = 0 [pid 684] <... mmap resumed>) = 0x7f5cd2d00000 [pid 682] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 678] <... munmap resumed>) = 0 [pid 678] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 682] <... openat resumed>) = 4 [pid 678] <... openat resumed>) = 4 [pid 682] ioctl(4, LOOP_SET_FD, 3 [pid 678] ioctl(4, LOOP_SET_FD, 3 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] ioctl(4, LOOP_CLR_FD [pid 678] ioctl(4, LOOP_CLR_FD [pid 682] <... ioctl resumed>) = 0 [pid 678] <... ioctl resumed>) = 0 [pid 684] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 684] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 686 attached [pid 683] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 685 attached [pid 686] set_robust_list(0x7f5cd2d209a0, 24 [pid 683] munmap(0x7f5cca900000, 138412032 [pid 684] <... clone3 resumed> => {parent_tid=[686]}, 88) = 686 [pid 684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 684] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] <... munmap resumed>) = 0 [pid 686] <... set_robust_list resumed>) = 0 [pid 683] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 682] ioctl(4, LOOP_SET_FD, 3 [pid 678] ioctl(4, LOOP_SET_FD, 3 [pid 684] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 683] <... openat resumed>) = 4 [pid 686] rt_sigprocmask(SIG_SETMASK, [] [pid 683] ioctl(4, LOOP_SET_FD, 3 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 683] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] close(4 [pid 678] close(4 [pid 683] ioctl(4, LOOP_CLR_FD [pid 682] <... close resumed>) = 0 [pid 685] set_robust_list(0x55555618f760, 24) = 0 [pid 685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 685] setpgid(0, 0) = 0 [pid 685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 685] write(3, "1000", 4) = 4 [pid 685] close(3) = 0 [pid 685] write(1, "executing program\n", 18) = 18 [pid 685] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 685] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 685] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 685] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[687]}, 88) = 687 [pid 685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 685] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 685] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 687 attached [pid 687] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 687] memfd_create("syzkaller", 0) = 3 [pid 687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 678] <... close resumed>) = 0 [pid 678] close(3 [pid 682] close(3 [pid 686] memfd_create("syzkaller", 0) = 3 [pid 686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 678] <... close resumed>) = 0 [pid 687] <... write resumed>) = 1048576 executing program [pid 682] <... close resumed>) = 0 [pid 683] <... ioctl resumed>) = 0 [pid 678] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 678] <... futex resumed>) = 1 [pid 674] <... futex resumed>) = 0 [pid 682] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] <... futex resumed>) = 0 [pid 678] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 674] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... futex resumed>) = 0 [pid 678] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 674] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 680] <... futex resumed>) = 1 [pid 682] <... futex resumed>) = 0 [pid 678] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 687] munmap(0x7f5cca900000, 138412032) = 0 [pid 687] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 687] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 687] ioctl(4, LOOP_CLR_FD) = 0 [pid 687] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 687] close(4) = 0 [pid 687] close(3 [pid 682] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 683] ioctl(4, LOOP_SET_FD, 3 [pid 678] <... futex resumed>) = 1 [pid 674] <... futex resumed>) = 0 [pid 683] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 683] close(4 [pid 674] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] <... close resumed>) = 0 [pid 678] truncate("./file1", 36262 [pid 674] <... futex resumed>) = 0 [pid 683] close(3 [pid 682] <... futex resumed>) = 1 [pid 674] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 680] <... futex resumed>) = 0 [pid 680] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] <... close resumed>) = 0 [pid 683] <... close resumed>) = 0 [pid 682] truncate("./file1", 36262 [pid 678] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... futex resumed>) = 0 [pid 685] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 685] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] <... futex resumed>) = 1 [pid 682] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 678] <... futex resumed>) = 1 [pid 682] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... futex resumed>) = 0 [pid 683] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] <... futex resumed>) = 1 [pid 678] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] <... futex resumed>) = 1 [pid 682] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 674] <... futex resumed>) = 0 [pid 674] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 678] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 681] <... futex resumed>) = 0 [pid 680] <... futex resumed>) = 0 [pid 678] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 681] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] <... futex resumed>) = 0 [pid 681] <... futex resumed>) = 1 [pid 680] <... futex resumed>) = 1 [pid 678] <... futex resumed>) = 1 [pid 674] <... futex resumed>) = 0 [pid 683] <... futex resumed>) = 0 [pid 682] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 678] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 682] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 674] <... futex resumed>) = 0 [pid 682] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 682] <... futex resumed>) = 0 [pid 678] read(-1 [pid 681] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 680] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 678] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 683] <... futex resumed>) = 0 [pid 678] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 680] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 678] <... futex resumed>) = 1 [pid 674] <... futex resumed>) = 0 [pid 678] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] exit_group(0 [pid 682] <... futex resumed>) = 0 [pid 681] <... futex resumed>) = 1 [pid 683] <... futex resumed>) = 0 [pid 680] <... futex resumed>) = 1 [pid 678] <... futex resumed>) = ? [pid 674] <... exit_group resumed>) = ? [pid 682] read(-1 [pid 678] +++ exited with 0 +++ [pid 681] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 680] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 674] +++ exited with 0 +++ [pid 683] truncate("./file1", 36262 [pid 682] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=674, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 682] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 683] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 682] <... futex resumed>) = 1 [pid 680] <... futex resumed>) = 0 [pid 683] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] exit_group(0 [pid 683] <... futex resumed>) = 1 [pid 682] <... futex resumed>) = ? [pid 681] <... futex resumed>) = 0 [pid 680] <... exit_group resumed>) = ? [pid 683] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 682] +++ exited with 0 +++ [pid 681] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] +++ exited with 0 +++ [pid 683] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 681] <... futex resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=680, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 681] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 687] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 687] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... futex resumed>) = 0 [pid 685] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... restart_syscall resumed>) = 0 [pid 685] <... futex resumed>) = 0 [pid 685] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 683] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 683] <... futex resumed>) = 1 [pid 681] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 683] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 683] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] <... futex resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 683] read(-1 [pid 681] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 688 [pid 683] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 683] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 683] <... futex resumed>) = 1 [pid 681] <... futex resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 683] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] exit_group(0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 683] <... futex resumed>) = ? [pid 681] <... exit_group resumed>) = ? [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 689 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 687] <... futex resumed>) = 1 [pid 687] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 687] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... futex resumed>) = 0 [pid 685] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 685] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] <... futex resumed>) = 1 [pid 687] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 683] +++ exited with 0 +++ [pid 681] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=681, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 690 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 687] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 687] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... futex resumed>) = 0 [pid 685] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 685] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] <... futex resumed>) = 1 [pid 687] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 687] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... futex resumed>) = 0 [pid 685] exit_group(0) = ? [pid 687] <... futex resumed>) = ? [pid 687] +++ exited with 0 +++ [pid 685] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=685, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 686] <... write resumed>) = 1048576 [pid 686] munmap(0x7f5cca900000, 138412032) = 0 [pid 686] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 686] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 686] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 689 attached [pid 689] set_robust_list(0x55555618f760, 24) = 0 [pid 689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 689] setpgid(0, 0 [pid 686] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 686] close(4) = 0 [pid 686] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FDci2-android-6-1/strace-static-x86_64: Process 688 attached ) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 691 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 686] <... close resumed>) = 0 [pid 689] <... setpgid resumed>) = 0 [pid 689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 689] write(3, "1000", 4) = 4 [pid 689] close(3) = 0 [pid 689] write(1, "executing program\n", 18) = 18 executing program [pid 689] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 689] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 689] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 689] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 689] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 689] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[692]}, 88) = 692 [pid 689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 689] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 686] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] set_robust_list(0x55555618f760, 24 [pid 684] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 690 attached [pid 688] <... set_robust_list resumed>) = 0 [pid 684] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] set_robust_list(0x55555618f760, 24 [pid 688] rt_sigprocmask(SIG_SETMASK, [] [pid 690] <... set_robust_list resumed>) = 0 [pid 688] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 690] rt_sigprocmask(SIG_SETMASK, [] [pid 688] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 686] <... futex resumed>) = 1 [pid 690] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 688] <... prctl resumed>) = 0 [pid 686] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 690] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 688] setpgid(0, 0 [pid 690] <... prctl resumed>) = 0 [pid 688] <... setpgid resumed>) = 0 [pid 690] setpgid(0, 0) = 0 [pid 688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 686] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 686] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... openat resumed>) = 3 [pid 684] <... futex resumed>) = 0 [pid 684] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... openat resumed>) = 3 [pid 684] <... futex resumed>) = 0 [pid 688] write(3, "1000", 4 [pid 690] write(3, "1000", 4 [pid 684] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] <... write resumed>) = 4 [pid 688] <... write resumed>) = 4 [pid 690] close(3 [pid 688] close(3 [pid 690] <... close resumed>) = 0 [pid 688] <... close resumed>) = 0 [pid 690] write(1, "executing program\n", 18 [pid 688] write(1, "executing program\n", 18 [pid 690] <... write resumed>) = 18 [pid 688] <... write resumed>) = 18 [pid 690] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 688] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 688] <... futex resumed>) = 0 [pid 690] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 688] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 690] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 688] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 690] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 688] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 688] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program executing program [pid 690] <... mmap resumed>) = 0x7f5cd2d00000 [pid 688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 686] truncate("./file1", 36262 [pid 690] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 688] <... mmap resumed>) = 0x7f5cd2d00000 [pid 690] <... mprotect resumed>) = 0 [pid 688] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 686] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 690] rt_sigprocmask(SIG_BLOCK, ~[] [pid 688] <... mprotect resumed>) = 0 [pid 686] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 688] rt_sigprocmask(SIG_BLOCK, ~[] [pid 690] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 688] <... rt_sigprocmask resumed>, [], 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 691 attached [pid 688] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 686] <... futex resumed>) = 1 [pid 684] <... futex resumed>) = 0 [pid 691] set_robust_list(0x55555618f760, 24 [pid 690] <... clone3 resumed> => {parent_tid=[693]}, 88) = 693 [pid 686] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 684] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... set_robust_list resumed>) = 0 [pid 690] rt_sigprocmask(SIG_SETMASK, [] [pid 688] <... clone3 resumed> => {parent_tid=[694]}, 88) = 694 [pid 686] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 684] <... futex resumed>) = 0 [pid 691] rt_sigprocmask(SIG_SETMASK, [] [pid 690] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 688] rt_sigprocmask(SIG_SETMASK, [] [pid 686] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 690] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 686] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 691] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 690] <... futex resumed>) = 0 [pid 688] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] read(-1 [pid 684] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... prctl resumed>) = 0 [pid 690] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 688] <... futex resumed>) = 0 [pid 686] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 684] <... futex resumed>) = 0 [pid 691] setpgid(0, 0 [pid 688] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 686] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 692 attached [pid 691] <... setpgid resumed>) = 0 [pid 686] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 692] set_robust_list(0x7f5cd2d209a0, 24 [pid 691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 686] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 684] exit_group(0 [pid 692] <... set_robust_list resumed>) = 0 [pid 691] <... openat resumed>) = 3 [pid 686] <... futex resumed>) = ? [pid 684] <... exit_group resumed>) = ? [pid 692] rt_sigprocmask(SIG_SETMASK, [] [pid 691] write(3, "1000", 4 [pid 686] +++ exited with 0 +++ [pid 684] +++ exited with 0 +++ [pid 692] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 691] <... write resumed>) = 4 [pid 692] memfd_create("syzkaller", 0 [pid 691] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=684, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 692] <... memfd_create resumed>) = 3 [pid 691] <... close resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 executing program [pid 691] write(1, "executing program\n", 18 [pid 692] <... mmap resumed>) = 0x7f5cca900000 [pid 691] <... write resumed>) = 18 [pid 692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 691] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... restart_syscall resumed>) = 0 [pid 691] <... futex resumed>) = 0 [pid 691] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 691] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 691] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 691] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 691] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 691] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[695]}, 88) = 695 [pid 691] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 691] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 691] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 695 attached [pid 695] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 696 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 695] memfd_create("syzkaller", 0) = 3 [pid 695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 692] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 696 attached [pid 696] set_robust_list(0x55555618f760, 24) = 0 [pid 696] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 696] setpgid(0, 0) = 0 [pid 696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 696] write(3, "1000", 4) = 4 [pid 696] close(3) = 0 [pid 692] munmap(0x7f5cca900000, 138412032 [pid 696] write(1, "executing program\n", 18 [pid 692] <... munmap resumed>) = 0 [pid 696] <... write resumed>) = 18 executing program [pid 696] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 696] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 696] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 696] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITEci2-android-6-1/strace-static-x86_64: Process 694 attached ci2-android-6-1/strace-static-x86_64: Process 693 attached ) = 0 [pid 692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 696] rt_sigprocmask(SIG_BLOCK, ~[] [pid 692] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 692] ioctl(4, LOOP_CLR_FD) = 0 [pid 696] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 696] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 693] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 694] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 693] rt_sigprocmask(SIG_SETMASK, [] [pid 694] rt_sigprocmask(SIG_SETMASK, [] [pid 696] <... clone3 resumed> => {parent_tid=[697]}, 88) = 697 [pid 696] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 696] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 696] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 692] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 692] close(4) = 0 [pid 692] close(3 [pid 693] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 694] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 693] memfd_create("syzkaller", 0 [pid 694] memfd_create("syzkaller", 0 [pid 693] <... memfd_create resumed>) = 3 [pid 694] <... memfd_create resumed>) = 3 [pid 693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 693] <... mmap resumed>) = 0x7f5cca900000 [pid 694] <... mmap resumed>) = 0x7f5cca900000 [pid 695] <... write resumed>) = 1048576 [pid 692] <... close resumed>) = 0 [pid 692] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 692] <... futex resumed>) = 1 [pid 693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 692] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 692] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 692] <... futex resumed>) = 1 [pid 692] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 692] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 692] <... futex resumed>) = 1 [pid 692] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 692] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 692] <... futex resumed>) = 1 [pid 692] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 692] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] exit_group(0) = ? [pid 692] <... futex resumed>) = ? [pid 692] +++ exited with 0 +++ [pid 689] +++ exited with 0 +++ [pid 694] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=689, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 697 attached [pid 697] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 697] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 697] memfd_create("syzkaller", 0) = 3 [pid 697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 693] <... write resumed>) = 1048576 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 698 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 695] munmap(0x7f5cca900000, 138412032) = 0 [pid 695] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 695] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 695] ioctl(4, LOOP_CLR_FD) = 0 [pid 694] <... write resumed>) = 1048576 [pid 695] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 695] close(4) = 0 [pid 695] close(3 [pid 697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 698 attached [pid 698] set_robust_list(0x55555618f760, 24) = 0 [pid 698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 698] setpgid(0, 0) = 0 [pid 698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 698] write(3, "1000", 4) = 4 [pid 694] munmap(0x7f5cca900000, 138412032 [pid 693] munmap(0x7f5cca900000, 138412032 [pid 698] close(3) = 0 [pid 698] write(1, "executing program\n", 18) = 18 executing program [pid 698] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] <... close resumed>) = 0 [pid 698] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 698] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 695] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 697] <... write resumed>) = 1048576 [pid 698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 691] <... futex resumed>) = 0 [pid 691] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... munmap resumed>) = 0 [pid 691] <... futex resumed>) = 0 [pid 691] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... futex resumed>) = 1 [pid 698] <... mmap resumed>) = 0x7f5cd2d00000 [pid 697] munmap(0x7f5cca900000, 138412032 [pid 694] <... munmap resumed>) = 0 [pid 693] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 694] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 695] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 693] <... openat resumed>) = 4 [pid 694] <... openat resumed>) = 4 [pid 693] ioctl(4, LOOP_SET_FD, 3 [pid 694] ioctl(4, LOOP_SET_FD, 3 [pid 693] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 694] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 693] ioctl(4, LOOP_CLR_FD [pid 694] ioctl(4, LOOP_CLR_FD [pid 693] <... ioctl resumed>) = 0 [pid 694] <... ioctl resumed>) = 0 [pid 697] <... munmap resumed>) = 0 [pid 695] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 698] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 697] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 698] <... mprotect resumed>) = 0 [pid 695] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... futex resumed>) = 0 [pid 691] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 691] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... futex resumed>) = 1 [pid 694] ioctl(4, LOOP_SET_FD, 3 [pid 693] ioctl(4, LOOP_SET_FD, 3 [pid 697] <... openat resumed>) = 4 [pid 694] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 693] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] ioctl(4, LOOP_SET_FD, 3 [pid 694] close(4 [pid 693] close(4 [pid 698] rt_sigprocmask(SIG_BLOCK, ~[] [pid 694] <... close resumed>) = 0 [pid 695] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 695] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... futex resumed>) = 0 [pid 691] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 691] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... futex resumed>) = 1 [pid 698] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 695] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 695] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 695] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... futex resumed>) = 0 [pid 691] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 691] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... futex resumed>) = 1 [pid 695] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 695] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... futex resumed>) = 0 [pid 691] exit_group(0) = ? [pid 695] <... futex resumed>) = ? [pid 698] <... clone3 resumed> => {parent_tid=[699]}, 88) = 699 [pid 698] rt_sigprocmask(SIG_SETMASK, [] [pid 695] +++ exited with 0 +++ [pid 691] +++ exited with 0 +++ [pid 698] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=691, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 698] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 699 attached [pid 699] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 699] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 694] close(3 [pid 693] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 700 [pid 693] close(3 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 699] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 699] memfd_create("syzkaller", 0) = 3 [pid 699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 694] <... close resumed>) = 0 [pid 693] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 700 attached [pid 700] set_robust_list(0x55555618f760, 24) = 0 [pid 700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 700] setpgid(0, 0) = 0 [pid 700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 700] write(3, "1000", 4) = 4 [pid 700] close(3) = 0 executing program [pid 700] write(1, "executing program\n", 18) = 18 [pid 700] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 700] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 700] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 693] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 693] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = 0 [pid 694] <... futex resumed>) = 1 [pid 697] ioctl(4, LOOP_CLR_FD [pid 694] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 693] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 694] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 688] <... futex resumed>) = 0 [pid 697] <... ioctl resumed>) = 0 [pid 694] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 690] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 694] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 688] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 693] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... futex resumed>) = 0 [pid 694] truncate("./file1", 36262 [pid 693] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 688] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 693] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 694] <... futex resumed>) = 1 [pid 693] truncate("./file1", 36262 [pid 690] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] <... futex resumed>) = 0 [pid 694] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 688] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 693] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... futex resumed>) = 0 [pid 694] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 693] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 688] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 693] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 694] <... futex resumed>) = 1 [pid 693] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 690] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] <... futex resumed>) = 0 [pid 694] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 694] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 693] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] ioctl(4, LOOP_SET_FD, 3 [pid 694] read(-1 [pid 693] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = 0 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 694] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 693] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] close(4 [pid 694] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 697] <... close resumed>) = 0 [pid 694] <... futex resumed>) = 0 [pid 693] read(-1 [pid 690] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] close(3 [pid 694] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 688] exit_group(0 [pid 694] <... futex resumed>) = ? [pid 693] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... exit_group resumed>) = ? [pid 693] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 693] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] exit_group(0 [pid 693] <... futex resumed>) = ? [pid 690] <... exit_group resumed>) = ? [pid 700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[701]}, 88) = 701 [pid 700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 700] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] +++ exited with 0 +++ [pid 690] +++ exited with 0 +++ [pid 694] +++ exited with 0 +++ [pid 688] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=688, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 700] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 699] <... write resumed>) = 1048576 [pid 697] <... close resumed>) = 0 [pid 699] munmap(0x7f5cca900000, 138412032) = 0 [pid 699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 699] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 699] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 701 attached [pid 701] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 702 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 703 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 699] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 699] close(4) = 0 [pid 699] close(3 [pid 701] rt_sigprocmask(SIG_SETMASK, [] [pid 697] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 696] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 696] <... futex resumed>) = 0 [pid 696] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 701] memfd_create("syzkaller", 0) = 3 [pid 701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 697] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 699] <... close resumed>) = 0 [pid 699] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... futex resumed>) = 1 [pid 699] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 699] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... futex resumed>) = 1 [pid 699] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 699] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... futex resumed>) = 1 [pid 699] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 699] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... futex resumed>) = 1 [pid 699] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 699] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] exit_group(0) = ? [pid 699] <... futex resumed>) = ? [pid 699] +++ exited with 0 +++ [pid 698] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=698, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 697] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 696] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 696] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 704 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 697] truncate("./file1", 36262 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 697] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 697] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 697] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 697] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 696] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 697] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 697] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 697] read(-1 [pid 696] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 697] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 697] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] exit_group(0) = ? [pid 697] <... futex resumed>) = ? [pid 697] +++ exited with 0 +++ [pid 696] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 703 attached [pid 703] set_robust_list(0x55555618f760, 24) = 0 [pid 703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 703] setpgid(0, 0) = 0 [pid 703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 703] write(3, "1000", 4) = 4 [pid 703] close(3) = 0 [pid 703] write(1, "executing program\n", 18) = 18 executing program [pid 703] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 703] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 703] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 703] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 703] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 703] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[705]}, 88) = 705 [pid 703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 703] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 703] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 704 attached ci2-android-6-1/strace-static-x86_64: Process 705 attached ci2-android-6-1/strace-static-x86_64: Process 702 attached [pid 308] <... restart_syscall resumed>) = 0 [pid 705] set_robust_list(0x7f5cd2d209a0, 24 [pid 702] set_robust_list(0x55555618f760, 24) = 0 [pid 704] set_robust_list(0x55555618f760, 24 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 705] <... set_robust_list resumed>) = 0 [pid 702] rt_sigprocmask(SIG_SETMASK, [] [pid 705] rt_sigprocmask(SIG_SETMASK, [] [pid 702] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... openat resumed>) = 3 [pid 705] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 702] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] ioctl(3, LOOP_CLR_FD [pid 702] <... prctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 702] setpgid(0, 0 [pid 308] close(3 [pid 702] <... setpgid resumed>) = 0 [pid 705] memfd_create("syzkaller", 0 [pid 308] <... close resumed>) = 0 [pid 705] <... memfd_create resumed>) = 3 [pid 702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 702] <... openat resumed>) = 3 [pid 705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 702] write(3, "1000", 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 704] <... set_robust_list resumed>) = 0 [pid 704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 704] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 702] <... write resumed>) = 4 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 706 [pid 702] close(3 [pid 705] <... mmap resumed>) = 0x7f5cca900000 [pid 702] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 702] write(1, "executing program\n", 18 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 702] <... write resumed>) = 18 [pid 704] <... prctl resumed>) = 0 [pid 702] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] setpgid(0, 0 [pid 702] <... futex resumed>) = 0 [pid 704] <... setpgid resumed>) = 0 [pid 702] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 702] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 704] <... openat resumed>) = 3 [pid 702] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 704] write(3, "1000", 4 [pid 702] <... mmap resumed>) = 0x7f5cd2d00000 [pid 704] <... write resumed>) = 4 [pid 702] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 704] close(3 [pid 702] <... mprotect resumed>) = 0 [pid 704] <... close resumed>) = 0 [pid 702] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 704] write(1, "executing program\n", 18 [pid 702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 704] <... write resumed>) = 18 [pid 704] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 702] <... clone3 resumed> => {parent_tid=[707]}, 88) = 707 [pid 704] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 702] rt_sigprocmask(SIG_SETMASK, [] [pid 704] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 702] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 702] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 702] <... futex resumed>) = 0 executing program [pid 704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 702] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 704] <... mmap resumed>) = 0x7f5cd2d00000 [pid 704] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[708]}, 88) = 708 [pid 704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 704] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 706 attached [pid 706] set_robust_list(0x55555618f760, 24) = 0 [pid 706] rt_sigprocmask(SIG_SETMASK, [] [pid 701] <... write resumed>) = 1048576 [pid 706] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 706] setpgid(0, 0) = 0 [pid 706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 701] munmap(0x7f5cca900000, 138412032) = 0 [pid 706] <... openat resumed>) = 3 [pid 706] write(3, "1000", 4) = 4 [pid 701] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 706] close(3 [pid 701] <... openat resumed>) = 4 [pid 706] <... close resumed>) = 0 [pid 706] write(1, "executing program\n", 18 [pid 701] ioctl(4, LOOP_SET_FD, 3 [pid 706] <... write resumed>) = 18 [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 706] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] ioctl(4, LOOP_CLR_FD) = 0 [pid 706] <... futex resumed>) = 0 executing program [pid 706] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 706] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 706] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 706] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 706] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 708 attached [pid 708] set_robust_list(0x7f5cd2d209a0, 24 [pid 701] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 701] close(4) = 0 [pid 701] close(3 [pid 706] <... clone3 resumed> => {parent_tid=[709]}, 88) = 709 [pid 701] <... close resumed>) = 0 [pid 708] <... set_robust_list resumed>) = 0 [pid 706] rt_sigprocmask(SIG_SETMASK, [] [pid 708] rt_sigprocmask(SIG_SETMASK, [] [pid 706] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 708] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 706] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] memfd_create("syzkaller", 0 [pid 706] <... futex resumed>) = 0 [pid 708] <... memfd_create resumed>) = 3 [pid 706] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 701] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... futex resumed>) = 1 [pid 701] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 701] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... futex resumed>) = 1 [pid 701] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 701] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... futex resumed>) = 1 [pid 701] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 701] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... futex resumed>) = 1 [pid 701] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 701] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 700] <... futex resumed>) = 0 [pid 701] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 700] exit_group(0 [pid 701] <... futex resumed>) = ? [pid 700] <... exit_group resumed>) = ? [pid 705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 701] +++ exited with 0 +++ [pid 700] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=700, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 709 attached [pid 709] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 709] memfd_create("syzkaller", 0) = 3 [pid 709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 707 attached [pid 310] <... restart_syscall resumed>) = 0 [pid 707] set_robust_list(0x7f5cd2d209a0, 24 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 707] <... set_robust_list resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 707] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 707] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 710 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 705] <... write resumed>) = 1048576 [pid 707] memfd_create("syzkaller", 0) = 3 [pid 707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 708] <... write resumed>) = 1048576 [pid 708] munmap(0x7f5cca900000, 138412032) = 0 [pid 707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 710 attached [pid 708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 708] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 708] ioctl(4, LOOP_CLR_FD) = 0 [pid 708] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 708] close(4) = 0 [pid 708] close(3 [pid 710] set_robust_list(0x55555618f760, 24) = 0 [pid 705] munmap(0x7f5cca900000, 138412032 [pid 710] rt_sigprocmask(SIG_SETMASK, [] [pid 705] <... munmap resumed>) = 0 [pid 710] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 708] <... close resumed>) = 0 [pid 707] <... write resumed>) = 1048576 [pid 710] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 705] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 708] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 708] <... futex resumed>) = 1 [pid 708] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 708] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 708] <... futex resumed>) = 1 [pid 708] truncate("./file1", 36262 [pid 709] <... write resumed>) = 1048576 [pid 708] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 708] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 708] <... futex resumed>) = 1 [pid 708] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 708] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 708] <... futex resumed>) = 1 [pid 708] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 708] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] exit_group(0) = ? [pid 708] <... futex resumed>) = ? [pid 708] +++ exited with 0 +++ [pid 704] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=704, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 709] munmap(0x7f5cca900000, 138412032) = 0 [pid 709] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 709] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 709] ioctl(4, LOOP_CLR_FD) = 0 [pid 710] <... prctl resumed>) = 0 [pid 710] setpgid(0, 0) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 705] <... openat resumed>) = 4 [pid 710] <... openat resumed>) = 3 [pid 705] ioctl(4, LOOP_SET_FD, 3 [pid 710] write(3, "1000", 4 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] <... write resumed>) = 4 [pid 707] munmap(0x7f5cca900000, 138412032 [pid 705] ioctl(4, LOOP_CLR_FD [pid 710] close(3 [pid 705] <... ioctl resumed>) = 0 [pid 710] <... close resumed>) = 0 [pid 710] write(1, "executing program\n", 18 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 711 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 709] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 709] close(4) = 0 [pid 709] close(3) = 0 [pid 710] <... write resumed>) = 18 [pid 707] <... munmap resumed>) = 0 executing program [pid 710] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 710] <... futex resumed>) = 0 [pid 705] ioctl(4, LOOP_SET_FD, 3 [pid 710] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 707] <... openat resumed>) = 4 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 707] ioctl(4, LOOP_SET_FD, 3 [pid 710] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 705] close(4 [pid 710] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 705] <... close resumed>) = 0 [pid 707] ioctl(4, LOOP_CLR_FD [pid 710] <... mmap resumed>) = 0x7f5cd2d00000 [pid 707] <... ioctl resumed>) = 0 [pid 705] close(3 [pid 710] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 709] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] <... futex resumed>) = 0 [pid 710] rt_sigprocmask(SIG_BLOCK, ~[] [pid 706] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 706] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 710] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 710] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 709] <... futex resumed>) = 1 [pid 710] <... clone3 resumed> => {parent_tid=[712]}, 88) = 712 [pid 710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 710] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 710] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 709] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 705] <... close resumed>) = 0 [pid 709] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] <... futex resumed>) = 0 [pid 706] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 706] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... futex resumed>) = 1 [pid 709] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 709] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] <... futex resumed>) = 0 [pid 706] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 706] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... futex resumed>) = 1 [pid 709] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 709] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] <... futex resumed>) = 0 [pid 706] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 706] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... futex resumed>) = 1 [pid 709] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 709] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] <... futex resumed>) = 0 [pid 706] exit_group(0) = ? [pid 709] <... futex resumed>) = ? [pid 709] +++ exited with 0 +++ [pid 706] +++ exited with 0 +++ [pid 705] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] <... futex resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 705] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 703] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 703] <... futex resumed>) = 0 [pid 705] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 703] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 705] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] <... futex resumed>) = 0 [pid 705] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 703] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 703] <... futex resumed>) = 0 [pid 705] truncate("./file1", 36262 [pid 703] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 705] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] ioctl(4, LOOP_SET_FD, 3 [pid 705] <... futex resumed>) = 1 [pid 703] <... futex resumed>) = 0 [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 705] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 703] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] close(4 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 703] <... futex resumed>) = 0 [pid 707] <... close resumed>) = 0 [pid 705] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 703] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] close(3 [pid 705] <... mmap resumed>) = -1 EBADF (Bad file descriptor) ci2-android-6-1/strace-static-x86_64: Process 712 attached [pid 712] set_robust_list(0x7f5cd2d209a0, 24 [pid 705] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... set_robust_list resumed>) = 0 [pid 712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 712] memfd_create("syzkaller", 0 [pid 707] <... close resumed>) = 0 [pid 705] <... futex resumed>) = 1 [pid 703] <... futex resumed>) = 0 [pid 707] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 703] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] <... futex resumed>) = 1 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 703] <... futex resumed>) = 0 [pid 702] <... futex resumed>) = 0 [pid 707] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 705] read(-1 [pid 703] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 702] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 705] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 702] <... futex resumed>) = 0 [pid 707] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 705] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 702] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 705] <... futex resumed>) = 1 [pid 703] <... futex resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 707] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 703] exit_group(0 [pid 707] <... futex resumed>) = 1 [pid 705] <... futex resumed>) = ? [pid 703] <... exit_group resumed>) = ? [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 702] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... openat resumed>) = 3 [pid 705] +++ exited with 0 +++ [pid 703] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD [pid 707] truncate("./file1", 36262 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=703, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... ioctl resumed>) = 0 [pid 712] <... memfd_create resumed>) = 3 [pid 707] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] close(3 [pid 712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 707] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... close resumed>) = 0 [pid 712] <... mmap resumed>) = 0x7f5cca900000 [pid 707] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 707] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 702] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 707] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 702] <... futex resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 707] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 702] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 707] <... futex resumed>) = 0 [pid 702] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] <... openat resumed>) = 3 [pid 707] read(-1 [pid 702] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 713 [pid 707] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 702] <... futex resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 707] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 702] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] close(3 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 707] <... futex resumed>) = 0 [pid 702] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] <... close resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 707] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] exit_group(0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 707] <... futex resumed>) = ? [pid 702] <... exit_group resumed>) = ? [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 711 attached [pid 707] +++ exited with 0 +++ [pid 702] +++ exited with 0 +++ [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 714 [pid 711] set_robust_list(0x55555618f760, 24 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=702, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 711] <... set_robust_list resumed>) = 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 711] setpgid(0, 0) = 0 [pid 711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 711] write(3, "1000", 4) = 4 [pid 711] close(3) = 0 [pid 711] write(1, "executing program\n", 18) = 18 executing program [pid 711] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 711] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 711] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 711] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 711] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[715]}, 88) = 715 [pid 711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 711] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWRci2-android-6-1/strace-static-x86_64: Process 713 attached ) = 3 [pid 713] set_robust_list(0x55555618f760, 24 [pid 311] ioctl(3, LOOP_CLR_FD [pid 713] <... set_robust_list resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 715 attached ci2-android-6-1/strace-static-x86_64: Process 714 attached [pid 713] rt_sigprocmask(SIG_SETMASK, [] [pid 311] close(3 [pid 715] set_robust_list(0x7f5cd2d209a0, 24 [pid 714] set_robust_list(0x55555618f760, 24 [pid 713] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... close resumed>) = 0 [pid 715] <... set_robust_list resumed>) = 0 [pid 714] <... set_robust_list resumed>) = 0 [pid 713] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 715] rt_sigprocmask(SIG_SETMASK, [] [pid 714] rt_sigprocmask(SIG_SETMASK, [] [pid 713] <... prctl resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 715] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 714] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 713] setpgid(0, 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 715] memfd_create("syzkaller", 0 [pid 714] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 713] <... setpgid resumed>) = 0 [pid 715] <... memfd_create resumed>) = 3 [pid 714] <... prctl resumed>) = 0 [pid 713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 716 [pid 715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 714] setpgid(0, 0 [pid 713] <... openat resumed>) = 3 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 715] <... mmap resumed>) = 0x7f5cca900000 [pid 714] <... setpgid resumed>) = 0 [pid 713] write(3, "1000", 4 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 713] <... write resumed>) = 4 [pid 713] close(3) = 0 executing program [pid 713] write(1, "executing program\n", 18) = 18 [pid 713] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 713] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 713] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 713] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 713] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 713] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 713] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[717]}, 88) = 717 [pid 713] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 713] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 713] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 716 attached [pid 716] set_robust_list(0x55555618f760, 24) = 0 [pid 716] rt_sigprocmask(SIG_SETMASK, [] [pid 712] <... write resumed>) = 1048576 [pid 714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 716] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 714] <... openat resumed>) = 3 [pid 714] write(3, "1000", 4 [pid 716] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 714] <... write resumed>) = 4 [pid 712] munmap(0x7f5cca900000, 138412032 [pid 714] close(3) = 0 [pid 712] <... munmap resumed>) = 0 [pid 716] <... prctl resumed>) = 0 [pid 716] setpgid(0, 0) = 0 [pid 716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 712] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 712] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 716] write(3, "1000", 4) = 4 [pid 712] ioctl(4, LOOP_CLR_FD [pid 716] close(3 [pid 712] <... ioctl resumed>) = 0 [pid 716] <... close resumed>) = 0 [pid 716] write(1, "executing program\n", 18) = 18 executing program [pid 716] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 716] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 716] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 712] ioctl(4, LOOP_SET_FD, 3 [pid 716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 712] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 714] write(1, "executing program\n", 18 [pid 712] close(4 [pid 716] <... clone3 resumed> => {parent_tid=[718]}, 88) = 718 [pid 714] <... write resumed>) = 18 [pid 712] <... close resumed>) = 0 executing program [pid 716] rt_sigprocmask(SIG_SETMASK, [] [pid 715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 714] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] close(3 [pid 716] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 714] <... futex resumed>) = 0 [pid 712] <... close resumed>) = 0 [pid 716] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 716] <... futex resumed>) = 0 [pid 714] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 716] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 714] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 712] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[719]}, 88) = 719 [pid 712] <... futex resumed>) = 1 [pid 714] rt_sigprocmask(SIG_SETMASK, [] [pid 710] <... futex resumed>) = 0 [pid 714] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 710] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 710] <... futex resumed>) = 0 [pid 714] <... futex resumed>) = 0 [pid 710] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 714] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 712] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 712] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 710] <... futex resumed>) = 0 [pid 712] truncate("./file1", 36262 [pid 710] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 710] <... futex resumed>) = 0 [pid 712] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... futex resumed>) = 0 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 712] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 710] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 710] <... futex resumed>) = 0 [pid 712] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... futex resumed>) = 0 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 712] read(-1 [pid 710] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 710] <... futex resumed>) = 0 [pid 712] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... futex resumed>) = 0 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 712] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 710] exit_group(0 [pid 712] <... futex resumed>) = ? [pid 710] <... exit_group resumed>) = ? [pid 712] +++ exited with 0 +++ [pid 710] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=710, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 717 attached [pid 715] <... write resumed>) = 1048576 [pid 310] <... restart_syscall resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 719 attached [pid 717] set_robust_list(0x7f5cd2d209a0, 24 [pid 715] munmap(0x7f5cca900000, 138412032 [pid 719] set_robust_list(0x7f5cd2d209a0, 24 [pid 717] <... set_robust_list resumed>) = 0 [pid 715] <... munmap resumed>) = 0 [pid 719] <... set_robust_list resumed>) = 0 [pid 717] rt_sigprocmask(SIG_SETMASK, [] [pid 715] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWRci2-android-6-1/strace-static-x86_64: Process 718 attached [pid 719] rt_sigprocmask(SIG_SETMASK, [] [pid 717] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 715] <... openat resumed>) = 4 [pid 310] <... openat resumed>) = 3 [pid 718] set_robust_list(0x7f5cd2d209a0, 24 [pid 310] ioctl(3, LOOP_CLR_FD [pid 718] <... set_robust_list resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 718] rt_sigprocmask(SIG_SETMASK, [] [pid 310] close(3 [pid 718] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... close resumed>) = 0 [pid 719] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 718] memfd_create("syzkaller", 0 [pid 717] memfd_create("syzkaller", 0 [pid 715] ioctl(4, LOOP_SET_FD, 3 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 719] memfd_create("syzkaller", 0 [pid 718] <... memfd_create resumed>) = 3 [pid 717] <... memfd_create resumed>) = 3 [pid 715] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 719] <... memfd_create resumed>) = 3 [pid 718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 715] ioctl(4, LOOP_CLR_FD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 718] <... mmap resumed>) = 0x7f5cca900000 [pid 717] <... mmap resumed>) = 0x7f5cca900000 [pid 715] <... ioctl resumed>) = 0 [pid 719] <... mmap resumed>) = 0x7f5cca900000 [pid 718] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 720 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 715] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 715] close(4) = 0 [pid 718] <... write resumed>) = 1048576 [pid 718] munmap(0x7f5cca900000, 138412032) = 0 [pid 718] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 718] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 718] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 720 attached [pid 720] set_robust_list(0x55555618f760, 24) = 0 [pid 720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 718] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 718] close(4) = 0 [pid 718] close(3) = 0 [pid 718] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] <... futex resumed>) = 0 [pid 716] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 720] setpgid(0, 0 [pid 718] <... futex resumed>) = 1 [pid 720] <... setpgid resumed>) = 0 [pid 718] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 718] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 718] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] <... futex resumed>) = 0 [pid 716] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 718] <... futex resumed>) = 1 [pid 720] <... openat resumed>) = 3 [pid 718] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 718] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] close(3 [pid 716] <... futex resumed>) = 0 [pid 716] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 718] <... futex resumed>) = 1 [pid 718] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 718] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] <... futex resumed>) = 0 [pid 716] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 720] write(3, "1000", 4 [pid 718] <... futex resumed>) = 1 [pid 720] <... write resumed>) = 4 [pid 718] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 720] close(3 [pid 718] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... close resumed>) = 0 [pid 716] <... futex resumed>) = 0 [pid 716] exit_group(0) = ? [pid 718] <... futex resumed>) = ? [pid 718] +++ exited with 0 +++ [pid 716] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=716, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 715] <... close resumed>) = 0 executing program [pid 720] write(1, "executing program\n", 18) = 18 [pid 720] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 720] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 721 attached [pid 719] <... write resumed>) = 1048576 [pid 717] <... write resumed>) = 1048576 [pid 715] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... clone3 resumed> => {parent_tid=[721]}, 88) = 721 [pid 719] munmap(0x7f5cca900000, 138412032 [pid 717] munmap(0x7f5cca900000, 138412032 [pid 715] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 720] rt_sigprocmask(SIG_SETMASK, [] [pid 719] <... munmap resumed>) = 0 [pid 715] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 711] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 719] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 717] <... munmap resumed>) = 0 [pid 715] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 711] <... futex resumed>) = 0 [pid 720] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... openat resumed>) = 4 [pid 717] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 715] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 720] <... futex resumed>) = 0 [pid 719] ioctl(4, LOOP_SET_FD, 3 [pid 717] <... openat resumed>) = 4 [pid 715] <... futex resumed>) = 0 [pid 711] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 720] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 717] ioctl(4, LOOP_SET_FD, 3 [pid 715] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] ioctl(4, LOOP_CLR_FD [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 715] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 719] <... ioctl resumed>) = 0 [pid 717] ioctl(4, LOOP_CLR_FD [pid 715] truncate("./file1", 36262 [pid 711] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... ioctl resumed>) = 0 [pid 715] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 715] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 715] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... restart_syscall resumed>) = 0 [pid 715] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 715] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 711] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] set_robust_list(0x7f5cd2d209a0, 24 [pid 715] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 715] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... openat resumed>) = 3 [pid 715] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 715] read(-1 [pid 711] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... ioctl resumed>) = 0 [pid 719] ioctl(4, LOOP_SET_FD, 3 [pid 715] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 711] <... futex resumed>) = 0 [pid 311] close(3 [pid 721] <... set_robust_list resumed>) = 0 [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 715] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... close resumed>) = 0 [pid 719] close(4 [pid 717] ioctl(4, LOOP_SET_FD, 3 [pid 715] <... futex resumed>) = 0 [pid 719] <... close resumed>) = 0 [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 715] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 719] close(3 [pid 717] close(4 [pid 719] <... close resumed>) = 0 [pid 717] <... close resumed>) = 0 [pid 719] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] close(3 [pid 719] <... futex resumed>) = 1 [pid 717] <... close resumed>) = 0 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 717] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 717] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 717] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 719] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] <... futex resumed>) = 0 [pid 719] truncate("./file1", 36262 [pid 714] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 719] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] <... futex resumed>) = 0 [pid 719] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 714] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 713] <... futex resumed>) = 0 [pid 711] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 719] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 721] rt_sigprocmask(SIG_SETMASK, [] [pid 719] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] <... futex resumed>) = 0 [pid 721] memfd_create("syzkaller", 0 [pid 719] read(-1 [pid 714] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... memfd_create resumed>) = 3 [pid 719] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 719] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... mmap resumed>) = 0x7f5cca900000 [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 713] <... futex resumed>) = 1 [pid 711] exit_group(0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 717] <... futex resumed>) = 0 [pid 721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 719] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 715] <... futex resumed>) = ? [pid 714] exit_group(0 [pid 713] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 711] <... exit_group resumed>) = ? [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 719] <... futex resumed>) = ? [pid 717] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 715] +++ exited with 0 +++ [pid 714] <... exit_group resumed>) = ? [pid 719] +++ exited with 0 +++ [pid 717] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] +++ exited with 0 +++ [pid 711] +++ exited with 0 +++ [pid 717] <... futex resumed>) = 1 [pid 713] <... futex resumed>) = 0 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 722 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=711, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 717] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 713] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 713] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=714, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 717] truncate("./file1", 36262 [pid 713] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 717] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 717] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 713] <... futex resumed>) = 0 [pid 717] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 713] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 713] <... futex resumed>) = 0 [pid 717] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 713] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 717] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 713] <... futex resumed>) = 0 [pid 717] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 713] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 713] <... futex resumed>) = 0 [pid 717] read(-1 [pid 713] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 717] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 713] <... futex resumed>) = 0 [pid 717] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 713] exit_group(0 [pid 717] <... futex resumed>) = ? [pid 713] <... exit_group resumed>) = ? [pid 717] +++ exited with 0 +++ [pid 713] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=713, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 723 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 721] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 723 attached [pid 723] set_robust_list(0x55555618f760, 24) = 0 [pid 723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 723] setpgid(0, 0) = 0 [pid 723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 721] munmap(0x7f5cca900000, 138412032 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] <... restart_syscall resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 307] close(3ci2-android-6-1/strace-static-x86_64: Process 722 attached [pid 309] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... ioctl resumed>) = 0 [pid 722] set_robust_list(0x55555618f760, 24 [pid 309] close(3 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 722] <... set_robust_list resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 723] <... openat resumed>) = 3 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 722] rt_sigprocmask(SIG_SETMASK, [] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 724 [pid 721] <... munmap resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 722] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 725 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 722] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 722] <... prctl resumed>) = 0 [pid 722] setpgid(0, 0 [pid 723] write(3, "1000", 4) = 4 [pid 723] close(3) = 0 [pid 723] write(1, "executing program\n", 18) = 18 executing program [pid 721] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 723] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] ioctl(4, LOOP_SET_FD, 3 [pid 723] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 721] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 723] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 721] ioctl(4, LOOP_CLR_FD [pid 723] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 721] <... ioctl resumed>) = 0 [pid 723] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 722] <... setpgid resumed>) = 0 [pid 723] <... mmap resumed>) = 0x7f5cd2d00000 [pid 723] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 723] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 723] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 721] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 721] close(4) = 0 [pid 721] close(3) = 0 [pid 723] <... clone3 resumed> => {parent_tid=[726]}, 88) = 726 [pid 723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 723] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 721] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... futex resumed>) = 1 [pid 721] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 721] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... futex resumed>) = 1 [pid 721] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 721] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... futex resumed>) = 1 [pid 721] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 721] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... futex resumed>) = 1 [pid 721] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 721] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] exit_group(0) = ? [pid 721] <... futex resumed>) = ? [pid 721] +++ exited with 0 +++ [pid 720] +++ exited with 0 +++ ci2-android-6-1/strace-static-x86_64: Process 724 attached [pid 722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=720, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ci2-android-6-1/strace-static-x86_64: Process 725 attached [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 724] set_robust_list(0x55555618f760, 24 [pid 722] <... openat resumed>) = 3 [pid 725] set_robust_list(0x55555618f760, 24ci2-android-6-1/strace-static-x86_64: Process 726 attached [pid 726] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 726] memfd_create("syzkaller", 0) = 3 [pid 726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 725] <... set_robust_list resumed>) = 0 [pid 724] <... set_robust_list resumed>) = 0 [pid 722] write(3, "1000", 4 [pid 725] rt_sigprocmask(SIG_SETMASK, [] [pid 722] <... write resumed>) = 4 [pid 725] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 724] rt_sigprocmask(SIG_SETMASK, [] [pid 722] close(3 [pid 725] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 724] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 722] <... close resumed>) = 0 [pid 725] <... prctl resumed>) = 0 [pid 725] setpgid(0, 0 [pid 724] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 722] write(1, "executing program\n", 18 [pid 725] <... setpgid resumed>) = 0 [pid 724] <... prctl resumed>) = 0 [pid 722] <... write resumed>) = 18 [pid 725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 724] setpgid(0, 0 executing program [pid 722] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] <... openat resumed>) = 3 [pid 724] <... setpgid resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 725] write(3, "1000", 4) = 4 [pid 724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 722] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 725] close(3) = 0 [pid 724] <... openat resumed>) = 3 [pid 722] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 725] write(1, "executing program\n", 18 [pid 724] write(3, "1000", 4 [pid 722] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 725] <... write resumed>) = 18 [pid 724] <... write resumed>) = 4 [pid 722] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 725] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] close(3 [pid 722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 725] <... futex resumed>) = 0 [pid 724] <... close resumed>) = 0 [pid 722] <... mmap resumed>) = 0x7f5cd2d00000 [pid 725] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 724] write(1, "executing program\n", 18 [pid 722] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 725] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 724] <... write resumed>) = 18 [pid 722] <... mprotect resumed>) = 0 executing program executing program [pid 724] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 724] <... futex resumed>) = 0 [pid 722] rt_sigprocmask(SIG_BLOCK, ~[] [pid 725] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 724] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 722] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 724] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 722] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 725] <... mmap resumed>) = 0x7f5cd2d00000 [pid 724] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 725] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 725] <... mprotect resumed>) = 0 [pid 724] <... mmap resumed>) = 0x7f5cd2d00000 [pid 722] <... clone3 resumed> => {parent_tid=[727]}, 88) = 727 [pid 725] rt_sigprocmask(SIG_BLOCK, ~[] [pid 724] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 722] rt_sigprocmask(SIG_SETMASK, [] [pid 725] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 724] <... mprotect resumed>) = 0 [pid 722] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 724] rt_sigprocmask(SIG_BLOCK, ~[] [pid 722] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 722] <... futex resumed>) = 0 [pid 725] <... clone3 resumed> => {parent_tid=[728]}, 88) = 728 [pid 724] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 725] rt_sigprocmask(SIG_SETMASK, [] [pid 722] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 726] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 725] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 725] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] <... clone3 resumed> => {parent_tid=[729]}, 88) = 729 [pid 725] <... futex resumed>) = 0 [pid 724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 725] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 724] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... openat resumed>) = 3 [pid 724] <... futex resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 724] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 727 attached ci2-android-6-1/strace-static-x86_64: Process 728 attached [pid 728] set_robust_list(0x7f5cd2d209a0, 24 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 730 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 727] set_robust_list(0x7f5cd2d209a0, 24 [pid 728] <... set_robust_list resumed>) = 0 [pid 728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 727] <... set_robust_list resumed>) = 0 [pid 728] memfd_create("syzkaller", 0 [pid 727] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 727] memfd_create("syzkaller", 0 [pid 728] <... memfd_create resumed>) = 3 [pid 727] <... memfd_create resumed>) = 3 [pid 728] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 728] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 726] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 730 attached [pid 730] set_robust_list(0x55555618f760, 24) = 0 ci2-android-6-1/strace-static-x86_64: Process 729 attached [pid 729] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 729] rt_sigprocmask(SIG_SETMASK, [] [pid 730] rt_sigprocmask(SIG_SETMASK, [] [pid 729] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 729] memfd_create("syzkaller", 0) = 3 [pid 729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 727] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 730] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 730] setpgid(0, 0) = 0 [pid 730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 726] munmap(0x7f5cca900000, 138412032 [pid 730] write(3, "1000", 4 [pid 729] <... write resumed>) = 1048576 [pid 728] <... write resumed>) = 1048576 [pid 727] <... write resumed>) = 1048576 [pid 730] <... write resumed>) = 4 [pid 728] munmap(0x7f5cca900000, 138412032 [pid 730] close(3 [pid 727] munmap(0x7f5cca900000, 138412032 [pid 730] <... close resumed>) = 0 [pid 730] write(1, "executing program\n", 18 [pid 726] <... munmap resumed>) = 0 [pid 726] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 726] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 726] ioctl(4, LOOP_CLR_FD) = 0 executing program [pid 730] <... write resumed>) = 18 [pid 729] munmap(0x7f5cca900000, 138412032 [pid 730] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... munmap resumed>) = 0 [pid 730] <... futex resumed>) = 0 [pid 729] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 730] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 729] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 730] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 729] ioctl(4, LOOP_CLR_FD) = 0 [pid 730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 728] <... munmap resumed>) = 0 [pid 730] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 726] ioctl(4, LOOP_SET_FD, 3 [pid 730] <... mmap resumed>) = 0x7f5cd2d00000 [pid 726] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 730] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 727] <... munmap resumed>) = 0 [pid 726] close(4 [pid 730] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 731 attached [pid 728] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 727] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 726] <... close resumed>) = 0 [pid 726] close(3 [pid 730] <... clone3 resumed> => {parent_tid=[731]}, 88) = 731 [pid 726] <... close resumed>) = 0 [pid 730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 726] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] ioctl(4, LOOP_SET_FD, 3 [pid 726] <... futex resumed>) = 1 [pid 723] <... futex resumed>) = 0 [pid 729] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 726] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 723] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... futex resumed>) = 0 [pid 730] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 729] close(4 [pid 727] <... openat resumed>) = 4 [pid 726] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 729] <... close resumed>) = 0 [pid 727] ioctl(4, LOOP_SET_FD, 3 [pid 726] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] close(3 [pid 727] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 726] <... futex resumed>) = 1 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 729] <... close resumed>) = 0 [pid 727] ioctl(4, LOOP_CLR_FD [pid 726] truncate("./file1", 36262 [pid 727] <... ioctl resumed>) = 0 [pid 726] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 726] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 723] <... futex resumed>) = 0 [pid 726] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 723] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 723] <... futex resumed>) = 0 [pid 726] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] <... futex resumed>) = 0 [pid 723] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 726] read(-1 [pid 723] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] ioctl(4, LOOP_SET_FD, 3 [pid 726] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 726] <... futex resumed>) = 1 [pid 723] <... futex resumed>) = 0 [pid 723] exit_group(0) = ? [pid 727] close(4) = 0 [pid 726] +++ exited with 0 +++ [pid 723] +++ exited with 0 +++ [pid 729] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] close(3 [pid 724] <... futex resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=723, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 729] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 727] <... close resumed>) = 0 [pid 724] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 729] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 724] <... futex resumed>) = 0 [pid 729] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... futex resumed>) = 0 [pid 727] <... futex resumed>) = 1 [pid 729] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 728] <... openat resumed>) = 4 [pid 728] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 724] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 722] <... futex resumed>) = 0 [pid 724] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 722] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 1 [pid 722] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 724] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 729] <... futex resumed>) = 0 [pid 727] <... futex resumed>) = 0 [pid 729] truncate("./file1", 36262 [pid 727] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 729] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 727] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 729] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... futex resumed>) = 1 [pid 727] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 724] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] <... futex resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 724] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 722] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 729] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 727] truncate("./file1", 36262 [pid 729] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 727] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 729] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... futex resumed>) = 1 [pid 727] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 724] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] <... futex resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 724] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 722] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 729] read(-1 [pid 728] ioctl(4, LOOP_CLR_FD [pid 727] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 729] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 728] <... ioctl resumed>) = 0 [pid 727] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 729] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... futex resumed>) = 1 [pid 727] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 729] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] read(-1 [pid 724] exit_group(0 [pid 722] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] <... exit_group resumed>) = ? [pid 722] <... futex resumed>) = 0 [pid 729] <... futex resumed>) = ? [pid 727] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 722] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] set_robust_list(0x7f5cd2d209a0, 24 [pid 729] +++ exited with 0 +++ [pid 724] +++ exited with 0 +++ [pid 731] <... set_robust_list resumed>) = 0 [pid 728] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=724, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 731] rt_sigprocmask(SIG_SETMASK, [] [pid 728] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 731] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 728] close(4 [pid 731] memfd_create("syzkaller", 0 [pid 728] <... close resumed>) = 0 [pid 727] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 731] <... memfd_create resumed>) = 3 [pid 728] close(3 [pid 727] <... futex resumed>) = 1 [pid 722] <... futex resumed>) = 0 [pid 731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 727] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 722] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 731] <... mmap resumed>) = 0x7f5cca900000 [pid 727] <... futex resumed>) = ? [pid 722] <... exit_group resumed>) = ? [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] ioctl(3, LOOP_CLR_FD [pid 731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 728] <... close resumed>) = 0 [pid 727] +++ exited with 0 +++ [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 728] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 307] close(3 [pid 728] <... futex resumed>) = 1 [pid 725] <... futex resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=722, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... close resumed>) = 0 [pid 725] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... close resumed>) = 0 [pid 725] <... futex resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 725] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 728] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 732 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 728] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 731] <... write resumed>) = 1048576 [pid 728] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... restart_syscall resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 733 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 725] <... futex resumed>) = 0 [pid 728] <... futex resumed>) = 1 [pid 725] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... ioctl resumed>) = 0 [pid 728] truncate("./file1", 36262 [pid 725] <... futex resumed>) = 0 [pid 311] close(3 [pid 725] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... close resumed>) = 0 [pid 728] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 728] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 732 attached [pid 728] <... futex resumed>) = 1 [pid 725] <... futex resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 728] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 725] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] set_robust_list(0x55555618f760, 24 [pid 728] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 725] <... futex resumed>) = 0 [pid 725] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 728] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 734 [pid 725] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 728] <... futex resumed>) = 0 [pid 725] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 728] read(-1 [pid 725] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 728] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 725] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 728] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... set_robust_list resumed>) = 0 [pid 732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 732] setpgid(0, 0) = 0 [pid 732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 732] write(3, "1000", 4) = 4 [pid 732] close(3) = 0 [pid 732] write(1, "executing program\n", 18) = 18 executing program [pid 732] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 732] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 732] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITEci2-android-6-1/strace-static-x86_64: Process 734 attached ci2-android-6-1/strace-static-x86_64: Process 733 attached [pid 731] munmap(0x7f5cca900000, 138412032 [pid 728] <... futex resumed>) = 1 [pid 725] <... futex resumed>) = 0 [pid 733] set_robust_list(0x55555618f760, 24 [pid 731] <... munmap resumed>) = 0 [pid 728] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 725] exit_group(0 [pid 733] <... set_robust_list resumed>) = 0 [pid 731] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 728] <... futex resumed>) = ? [pid 725] <... exit_group resumed>) = ? [pid 734] set_robust_list(0x55555618f760, 24 [pid 733] rt_sigprocmask(SIG_SETMASK, [] [pid 731] <... openat resumed>) = 4 [pid 728] +++ exited with 0 +++ [pid 725] +++ exited with 0 +++ [pid 734] <... set_robust_list resumed>) = 0 [pid 733] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 731] ioctl(4, LOOP_SET_FD, 3 [pid 734] rt_sigprocmask(SIG_SETMASK, [] [pid 733] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 731] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=725, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 734] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 733] <... prctl resumed>) = 0 [pid 731] ioctl(4, LOOP_CLR_FD [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 734] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 733] setpgid(0, 0 [pid 731] <... ioctl resumed>) = 0 [pid 734] <... prctl resumed>) = 0 [pid 733] <... setpgid resumed>) = 0 [pid 734] setpgid(0, 0 [pid 733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 734] <... setpgid resumed>) = 0 [pid 733] <... openat resumed>) = 3 [pid 734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 733] write(3, "1000", 4 [pid 734] <... openat resumed>) = 3 [pid 733] <... write resumed>) = 4 [pid 734] write(3, "1000", 4 [pid 733] close(3 [pid 734] <... write resumed>) = 4 [pid 733] <... close resumed>) = 0 [pid 734] close(3 [pid 733] write(1, "executing program\n", 18 [pid 734] <... close resumed>) = 0 [pid 733] <... write resumed>) = 18 [pid 734] write(1, "executing program\n", 18 [pid 733] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... write resumed>) = 18 [pid 733] <... futex resumed>) = 0 [pid 734] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 734] <... futex resumed>) = 0 [pid 733] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 734] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 733] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 734] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 733] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 734] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 733] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 734] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 733] <... mmap resumed>) = 0x7f5cd2d00000 executing program executing program [pid 734] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 733] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 731] ioctl(4, LOOP_SET_FD, 3 [pid 734] <... mmap resumed>) = 0x7f5cd2d00000 [pid 733] <... mprotect resumed>) = 0 [pid 731] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 734] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 733] rt_sigprocmask(SIG_BLOCK, ~[] [pid 731] close(4 [pid 734] <... mprotect resumed>) = 0 [pid 733] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 731] <... close resumed>) = 0 [pid 733] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 732] <... mprotect resumed>) = 0 [pid 732] rt_sigprocmask(SIG_BLOCK, ~[] [pid 731] close(3 [pid 733] <... clone3 resumed> => {parent_tid=[735]}, 88) = 735 [pid 732] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 733] rt_sigprocmask(SIG_SETMASK, [] [pid 732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 733] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 733] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 733] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 732] <... clone3 resumed> => {parent_tid=[736]}, 88) = 736 [pid 732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 732] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 735 attached [pid 735] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 735] memfd_create("syzkaller", 0) = 3 [pid 735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 736 attached [pid 736] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 737 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 734] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 736] memfd_create("syzkaller", 0) = 3 [pid 736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 736] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 734] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 731] <... close resumed>) = 0 [pid 734] <... clone3 resumed> => {parent_tid=[738]}, 88) = 738 [pid 734] rt_sigprocmask(SIG_SETMASK, [] [pid 731] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 731] <... futex resumed>) = 1 [pid 730] <... futex resumed>) = 0 [pid 734] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... futex resumed>) = 0 [pid 731] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 730] <... futex resumed>) = 0 [pid 730] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 731] <... openat resumed>) = -1 EISDIR (Is a directory) ci2-android-6-1/strace-static-x86_64: Process 737 attached [pid 731] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] set_robust_list(0x55555618f760, 24 [pid 731] <... futex resumed>) = 1 [pid 730] <... futex resumed>) = 0 [pid 737] <... set_robust_list resumed>) = 0 [pid 731] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 730] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 730] <... futex resumed>) = 0 [pid 731] truncate("./file1", 36262 [pid 730] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 737] rt_sigprocmask(SIG_SETMASK, [] [pid 731] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 737] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 731] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 731] <... futex resumed>) = 1 [pid 730] <... futex resumed>) = 0 [pid 737] <... prctl resumed>) = 0 [pid 731] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 730] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] setpgid(0, 0 [pid 731] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 730] <... futex resumed>) = 0 [pid 737] <... setpgid resumed>) = 0 [pid 731] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] <... write resumed>) = 1048576 [pid 731] <... futex resumed>) = 0 [pid 730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 731] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 730] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 738 attached [pid 735] munmap(0x7f5cca900000, 138412032 [pid 731] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 730] <... futex resumed>) = 0 [pid 731] read(-1 [pid 730] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 737] <... openat resumed>) = 3 [pid 731] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 737] write(3, "1000", 4 [pid 731] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] set_robust_list(0x7f5cd2d209a0, 24 [pid 735] <... munmap resumed>) = 0 [pid 737] <... write resumed>) = 4 [pid 731] <... futex resumed>) = 1 [pid 730] <... futex resumed>) = 0 [pid 737] close(3 [pid 731] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 730] exit_group(0 [pid 737] <... close resumed>) = 0 [pid 738] <... set_robust_list resumed>) = 0 [pid 731] <... futex resumed>) = ? [pid 737] write(1, "executing program\n", 18 [pid 730] <... exit_group resumed>) = ? [pid 731] +++ exited with 0 +++ [pid 735] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 730] +++ exited with 0 +++ [pid 737] <... write resumed>) = 18 executing program [pid 738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 737] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=730, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 738] memfd_create("syzkaller", 0 [pid 737] <... futex resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 738] <... memfd_create resumed>) = 3 [pid 737] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 735] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 735] ioctl(4, LOOP_CLR_FD) = 0 [pid 738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 737] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 736] <... write resumed>) = 1048576 [pid 737] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 737] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 737] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 737] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 737] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[739]}, 88) = 739 [pid 737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 737] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 737] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 736] munmap(0x7f5cca900000, 138412032) = 0 [pid 736] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 736] ioctl(4, LOOP_SET_FD, 3 [pid 738] <... mmap resumed>) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 739 attached [pid 736] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3 [pid 739] set_robust_list(0x7f5cd2d209a0, 24 [pid 738] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 736] ioctl(4, LOOP_CLR_FD [pid 735] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... close resumed>) = 0 [pid 735] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 735] close(4) = 0 [pid 735] close(3) = 0 [pid 736] <... ioctl resumed>) = 0 [pid 735] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 733] <... futex resumed>) = 0 [pid 733] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 733] <... futex resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 733] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 735] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 736] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 736] close(4) = 0 [pid 736] close(3 [pid 735] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 735] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 736] <... close resumed>) = 0 [pid 736] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... futex resumed>) = 1 [pid 736] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 736] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... futex resumed>) = 1 [pid 736] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 733] <... futex resumed>) = 0 [pid 733] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 740 [pid 733] <... futex resumed>) = 1 [pid 733] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 735] <... futex resumed>) = 0 [pid 735] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 735] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 733] <... futex resumed>) = 0 [pid 733] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 733] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 735] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 733] <... futex resumed>) = 0 [pid 735] read(-1 [pid 733] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 733] <... futex resumed>) = 0 [pid 735] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] <... futex resumed>) = 0 [pid 733] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 735] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] exit_group(0) = ? [pid 735] <... futex resumed>) = ? [pid 735] +++ exited with 0 +++ [pid 733] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=733, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 736] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... futex resumed>) = 1 [pid 736] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 736] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... futex resumed>) = 1 [pid 736] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 736] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] exit_group(0) = ? [pid 736] <... futex resumed>) = ? [pid 736] +++ exited with 0 +++ [pid 732] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=732, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 741 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 739] <... set_robust_list resumed>) = 0 [pid 739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 739] memfd_create("syzkaller", 0) = 3 [pid 739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 740 attached [pid 739] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] <... restart_syscall resumed>) = 0 [pid 740] set_robust_list(0x55555618f760, 24 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 740] <... set_robust_list resumed>) = 0 [pid 740] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... openat resumed>) = 3 [pid 740] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 740] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... ioctl resumed>) = 0 [pid 740] <... prctl resumed>) = 0 [pid 307] close(3 [pid 740] setpgid(0, 0 [pid 307] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 741 attached [pid 741] set_robust_list(0x55555618f760, 24) = 0 [pid 741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 741] setpgid(0, 0) = 0 [pid 741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 741] write(3, "1000", 4) = 4 [pid 741] close(3) = 0 [pid 741] write(1, "executing program\n", 18) = 18 executing program [pid 741] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 741] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 741] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 741] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 741] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[742]}, 88) = 742 [pid 741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 741] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 740] <... setpgid resumed>) = 0 [pid 739] <... write resumed>) = 1048576 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 740] <... openat resumed>) = 3 [pid 739] munmap(0x7f5cca900000, 138412032 [pid 740] write(3, "1000", 4 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 743 [pid 740] <... write resumed>) = 4 [pid 740] close(3 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 740] <... close resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 740] write(1, "executing program\n", 18) = 18 [pid 740] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 740] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 740] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 738] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 742 attached [pid 740] <... mprotect resumed>) = 0 [pid 739] <... munmap resumed>) = 0 [pid 738] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 743 attached [pid 740] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 738] <... munmap resumed>) = 0 [pid 743] set_robust_list(0x55555618f760, 24 [pid 742] set_robust_list(0x7f5cd2d209a0, 24 [pid 740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 739] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 738] openat(AT_FDCWD, "/dev/loop4", O_RDWRci2-android-6-1/strace-static-x86_64: Process 744 attached [pid 743] <... set_robust_list resumed>) = 0 [pid 742] <... set_robust_list resumed>) = 0 [pid 739] <... openat resumed>) = 4 [pid 738] <... openat resumed>) = 4 [pid 742] rt_sigprocmask(SIG_SETMASK, [] [pid 740] <... clone3 resumed> => {parent_tid=[744]}, 88) = 744 [pid 742] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 740] rt_sigprocmask(SIG_SETMASK, [] [pid 739] ioctl(4, LOOP_SET_FD, 3 [pid 738] ioctl(4, LOOP_SET_FD, 3 [pid 744] set_robust_list(0x7f5cd2d209a0, 24 [pid 742] memfd_create("syzkaller", 0 [pid 740] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 743] rt_sigprocmask(SIG_SETMASK, [] [pid 742] <... memfd_create resumed>) = 3 [pid 740] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 740] <... futex resumed>) = 0 [pid 739] ioctl(4, LOOP_CLR_FD [pid 738] ioctl(4, LOOP_CLR_FD [pid 742] <... mmap resumed>) = 0x7f5cca900000 [pid 740] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 739] <... ioctl resumed>) = 0 [pid 738] <... ioctl resumed>) = 0 [pid 744] <... set_robust_list resumed>) = 0 [pid 743] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 743] setpgid(0, 0) = 0 [pid 743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 743] write(3, "1000", 4) = 4 [pid 743] close(3) = 0 [pid 743] write(1, "executing program\n", 18) = 18 [pid 743] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 743] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 743] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 743] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 743] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 743] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 743] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[745]}, 88) = 745 [pid 743] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 743] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 743] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 744] memfd_create("syzkaller", 0) = 3 [pid 744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 745 attached [pid 742] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 744] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 745] set_robust_list(0x7f5cd2d209a0, 24 [pid 739] ioctl(4, LOOP_SET_FD, 3 [pid 745] <... set_robust_list resumed>) = 0 [pid 739] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 745] rt_sigprocmask(SIG_SETMASK, [] [pid 739] close(4 [pid 745] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 744] <... write resumed>) = 1048576 [pid 742] <... write resumed>) = 1048576 [pid 739] <... close resumed>) = 0 [pid 745] memfd_create("syzkaller", 0) = 3 [pid 745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 739] close(3 [pid 744] munmap(0x7f5cca900000, 138412032 [pid 742] munmap(0x7f5cca900000, 138412032 [pid 739] <... close resumed>) = 0 [pid 738] ioctl(4, LOOP_SET_FD, 3 [pid 739] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 739] <... futex resumed>) = 1 [pid 738] close(4 [pid 737] <... futex resumed>) = 0 [pid 745] <... write resumed>) = 1048576 [pid 744] <... munmap resumed>) = 0 [pid 742] <... munmap resumed>) = 0 [pid 739] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] <... close resumed>) = 0 [pid 737] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] munmap(0x7f5cca900000, 138412032 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 738] close(3 [pid 737] <... futex resumed>) = 0 [pid 745] <... munmap resumed>) = 0 [pid 744] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 742] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 739] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 745] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 744] <... openat resumed>) = 4 [pid 742] <... openat resumed>) = 4 [pid 745] <... openat resumed>) = 4 [pid 744] ioctl(4, LOOP_SET_FD, 3 [pid 745] ioctl(4, LOOP_SET_FD, 3 [pid 742] ioctl(4, LOOP_SET_FD, 3 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 744] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 739] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 738] <... close resumed>) = 0 [pid 737] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] ioctl(4, LOOP_CLR_FD [pid 744] ioctl(4, LOOP_CLR_FD [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 745] <... ioctl resumed>) = 0 [pid 744] <... ioctl resumed>) = 0 [pid 742] ioctl(4, LOOP_CLR_FD [pid 739] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... ioctl resumed>) = 0 [pid 739] <... futex resumed>) = 1 [pid 738] <... futex resumed>) = 1 [pid 737] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = 0 [pid 739] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] ioctl(4, LOOP_SET_FD, 3 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = 0 [pid 739] truncate("./file1", 36262 [pid 738] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 737] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 738] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 739] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = 1 [pid 738] <... futex resumed>) = 1 [pid 737] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = 0 [pid 739] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = 0 [pid 739] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 738] truncate("./file1", 36262 [pid 737] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 738] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 739] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = 1 [pid 737] <... futex resumed>) = 0 [pid 738] <... futex resumed>) = 1 [pid 739] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... futex resumed>) = 0 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] <... futex resumed>) = 0 [pid 734] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] read(-1 [pid 737] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] <... futex resumed>) = 1 [pid 739] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 738] <... futex resumed>) = 0 [pid 734] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 739] <... futex resumed>) = 1 [pid 738] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 737] <... futex resumed>) = 0 [pid 739] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 744] ioctl(4, LOOP_SET_FD, 3 [pid 742] ioctl(4, LOOP_SET_FD, 3 [pid 738] <... futex resumed>) = 1 [pid 737] exit_group(0 [pid 734] <... futex resumed>) = 0 [pid 745] close(4 [pid 744] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 739] <... futex resumed>) = ? [pid 738] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] <... exit_group resumed>) = ? [pid 734] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... close resumed>) = 0 [pid 744] close(4 [pid 742] close(4 [pid 745] close(3 [pid 744] <... close resumed>) = 0 [pid 742] <... close resumed>) = 0 [pid 745] <... close resumed>) = 0 [pid 744] close(3 [pid 742] close(3 [pid 739] +++ exited with 0 +++ [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] +++ exited with 0 +++ [pid 734] <... futex resumed>) = 0 [pid 745] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... close resumed>) = 0 [pid 742] <... close resumed>) = 0 [pid 738] read(-1 [pid 734] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] <... futex resumed>) = 1 [pid 744] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 743] <... futex resumed>) = 0 [pid 742] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=737, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 745] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] <... futex resumed>) = 1 [pid 743] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... futex resumed>) = 1 [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = 0 [pid 738] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 744] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] <... futex resumed>) = 0 [pid 742] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = 1 [pid 745] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = 0 [pid 738] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 734] <... futex resumed>) = 0 [pid 745] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 744] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 740] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] exit_group(0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 738] <... futex resumed>) = ? [pid 734] <... exit_group resumed>) = ? [pid 309] <... openat resumed>) = 3 [pid 738] +++ exited with 0 +++ [pid 734] +++ exited with 0 +++ [pid 309] ioctl(3, LOOP_CLR_FD [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=734, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] <... ioctl resumed>) = 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 746 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 745] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 742] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 741] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] <... futex resumed>) = 1 [pid 744] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 743] <... futex resumed>) = 0 [pid 742] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 745] truncate("./file1", 36262 [pid 744] <... futex resumed>) = 1 [pid 743] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 745] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 744] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] <... futex resumed>) = 0 [pid 742] <... futex resumed>) = 1 [pid 741] <... futex resumed>) = 0 [pid 740] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... openat resumed>) = 3 [pid 745] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 745] <... futex resumed>) = 0 [pid 744] truncate("./file1", 36262 [pid 743] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 742] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] <... futex resumed>) = 0 [pid 740] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... ioctl resumed>) = 0 [pid 745] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 744] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 743] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] truncate("./file1", 36262 [pid 741] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] close(3 [pid 745] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 744] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 743] <... futex resumed>) = 0 [pid 742] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 311] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 746 attached [pid 745] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = 1 [pid 743] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 746] set_robust_list(0x55555618f760, 24 [pid 745] <... futex resumed>) = 0 [pid 744] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 742] <... futex resumed>) = 1 [pid 741] <... futex resumed>) = 0 [pid 740] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 746] <... set_robust_list resumed>) = 0 [pid 745] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 746] rt_sigprocmask(SIG_SETMASK, [] [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 744] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 743] <... futex resumed>) = 0 [pid 742] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] <... futex resumed>) = 0 [pid 740] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 745] read(-1 [pid 744] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 743] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 741] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 747 attached [pid 746] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 745] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 744] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 747 [pid 747] set_robust_list(0x55555618f760, 24 [pid 746] <... prctl resumed>) = 0 [pid 745] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = 1 [pid 742] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 747] <... set_robust_list resumed>) = 0 [pid 746] setpgid(0, 0 [pid 745] <... futex resumed>) = 1 [pid 744] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] <... futex resumed>) = 0 [pid 742] <... futex resumed>) = 1 [pid 741] <... futex resumed>) = 0 [pid 740] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 747] rt_sigprocmask(SIG_SETMASK, [] [pid 746] <... setpgid resumed>) = 0 [pid 745] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] exit_group(0 [pid 742] read(-1 [pid 741] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = 0 [pid 747] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 744] read(-1 [pid 743] <... exit_group resumed>) = ? [pid 742] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 741] <... futex resumed>) = 0 [pid 740] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 747] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 746] <... openat resumed>) = 3 [pid 745] <... futex resumed>) = ? [pid 744] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 742] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 744] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... futex resumed>) = 0 [pid 747] <... prctl resumed>) = 0 [pid 747] setpgid(0, 0) = 0 [pid 747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 747] write(3, "1000", 4) = 4 [pid 745] +++ exited with 0 +++ [pid 743] +++ exited with 0 +++ [pid 747] close(3 [pid 746] write(3, "1000", 4 [pid 744] <... futex resumed>) = 1 [pid 742] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 740] <... futex resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=743, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 747] <... close resumed>) = 0 [pid 746] <... write resumed>) = 4 [pid 744] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] exit_group(0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 740] exit_group(0 [pid 747] write(1, "executing program\n", 18 [pid 746] close(3 [pid 742] <... futex resumed>) = ? [pid 741] <... exit_group resumed>) = ? [pid 740] <... exit_group resumed>) = ? [pid 746] <... close resumed>) = 0 [pid 744] <... futex resumed>) = ? [pid 742] +++ exited with 0 +++ [pid 747] <... write resumed>) = 18 [pid 747] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 747] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 747] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 747] rt_sigprocmask(SIG_BLOCK, ~[] [pid 744] +++ exited with 0 +++ [pid 740] +++ exited with 0 +++ [pid 747] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=740, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 747] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 747] <... clone3 resumed> => {parent_tid=[748]}, 88) = 748 [pid 747] rt_sigprocmask(SIG_SETMASK, [] [pid 741] +++ exited with 0 +++ [pid 746] write(1, "executing program\n", 18 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=741, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 746] <... write resumed>) = 18 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 747] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 746] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 executing program executing program [pid 747] <... futex resumed>) = 0 [pid 746] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 747] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 746] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 748 attached ) = 0x7f5cd2d00000 [pid 746] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 748] set_robust_list(0x7f5cd2d209a0, 24 [pid 746] <... mprotect resumed>) = 0 [pid 748] <... set_robust_list resumed>) = 0 [pid 748] rt_sigprocmask(SIG_SETMASK, [] [pid 746] rt_sigprocmask(SIG_BLOCK, ~[] [pid 748] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 748] memfd_create("syzkaller", 0 [pid 746] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 748] <... memfd_create resumed>) = 3 [pid 748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 746] <... clone3 resumed> => {parent_tid=[749]}, 88) = 749 [pid 746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 746] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 746] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 748] <... mmap resumed>) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 749 attached [pid 749] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 749] memfd_create("syzkaller", 0) = 3 [pid 749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 749] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 308] <... restart_syscall resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 749] <... write resumed>) = 1048576 [pid 748] <... write resumed>) = 1048576 [pid 310] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] close(3 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 750 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 749] munmap(0x7f5cca900000, 138412032 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 749] <... munmap resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 749] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 749] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 749] ioctl(4, LOOP_CLR_FD) = 0 [pid 748] munmap(0x7f5cca900000, 138412032) = 0 [pid 748] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 751 [pid 748] <... openat resumed>) = 4 [pid 748] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 748] ioctl(4, LOOP_CLR_FD) = 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 752 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 751 attached [pid 751] set_robust_list(0x55555618f760, 24 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 749] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 749] close(4) = 0 [pid 749] close(3) = 0 [pid 748] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 748] close(4) = 0 [pid 748] close(3) = 0 [pid 749] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 [pid 746] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 746] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 749] <... futex resumed>) = 1 [pid 749] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 749] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 [pid 746] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 746] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 749] <... futex resumed>) = 1 [pid 749] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 749] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 [pid 746] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 746] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 749] <... futex resumed>) = 1 [pid 749] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 749] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 [pid 746] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 746] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 749] <... futex resumed>) = 1 [pid 749] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 749] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 [pid 746] exit_group(0) = ? [pid 749] <... futex resumed>) = ? [pid 749] +++ exited with 0 +++ [pid 746] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=746, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 751] <... set_robust_list resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 751] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 751] setpgid(0, 0) = 0 [pid 751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 748] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 747] <... futex resumed>) = 0 [pid 748] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 747] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 748] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... futex resumed>) = 1 [pid 748] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 751] write(3, "1000", 4 [pid 748] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... restart_syscall resumed>) = 0 [pid 748] <... futex resumed>) = 1 [pid 751] <... write resumed>) = 4 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 751] close(3 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 748] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 309] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 748] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 309] <... close resumed>) = 0 [pid 751] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 748] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 747] <... futex resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 747] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] write(1, "executing program\n", 18 [pid 748] <... futex resumed>) = 1 [pid 751] <... write resumed>) = 18 executing program [pid 748] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 753 [pid 751] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 748] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 747] exit_group(0) = ? [pid 748] <... futex resumed>) = ? [pid 748] +++ exited with 0 +++ [pid 747] +++ exited with 0 +++ [pid 751] <... futex resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=747, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 751] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 751] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 751] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 751] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 751] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program [pid 751] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[754]}, 88) = 754 [pid 751] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 751] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 753 attached [pid 753] set_robust_list(0x55555618f760, 24) = 0 [pid 753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 753] setpgid(0, 0) = 0 [pid 753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 753] write(3, "1000", 4) = 4 [pid 753] close(3) = 0 [pid 753] write(1, "executing program\n", 18) = 18 [pid 753] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 753] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 753] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 753] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 753] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 753] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[755]}, 88) = 755 [pid 753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 753] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 754 attached [pid 754] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 754] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 754] memfd_create("syzkaller", 0) = 3 [pid 754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 752 attached [pid 752] set_robust_list(0x55555618f760, 24ci2-android-6-1/strace-static-x86_64: Process 750 attached ) = 0 [pid 752] rt_sigprocmask(SIG_SETMASK, [] [pid 750] set_robust_list(0x55555618f760, 24 [pid 752] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 750] <... set_robust_list resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 755 attached [pid 755] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 755] rt_sigprocmask(SIG_SETMASK, [] [pid 752] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 750] rt_sigprocmask(SIG_SETMASK, [] [pid 755] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 755] memfd_create("syzkaller", 0 [pid 752] <... prctl resumed>) = 0 [pid 755] <... memfd_create resumed>) = 3 [pid 752] setpgid(0, 0 [pid 750] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 752] <... setpgid resumed>) = 0 [pid 750] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 750] <... prctl resumed>) = 0 [pid 754] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 752] <... openat resumed>) = 3 [pid 750] setpgid(0, 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 756 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 752] write(3, "1000", 4 [pid 750] <... setpgid resumed>) = 0 [pid 752] <... write resumed>) = 4 [pid 750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 752] close(3 [pid 750] <... openat resumed>) = 3 [pid 752] <... close resumed>) = 0 [pid 750] write(3, "1000", 4 [pid 752] write(1, "executing program\n", 18 [pid 750] <... write resumed>) = 4 [pid 755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 executing program [pid 752] <... write resumed>) = 18 [pid 754] <... write resumed>) = 1048576 [pid 752] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] munmap(0x7f5cca900000, 138412032 [pid 752] <... futex resumed>) = 0 [pid 750] close(3 [pid 752] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 750] <... close resumed>) = 0 [pid 754] <... munmap resumed>) = 0 [pid 754] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 752] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 750] write(1, "executing program\n", 18ci2-android-6-1/strace-static-x86_64: Process 756 attached executing program [pid 752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 750] <... write resumed>) = 18 [pid 754] ioctl(4, LOOP_SET_FD, 3 [pid 756] set_robust_list(0x55555618f760, 24 [pid 754] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 752] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 750] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] ioctl(4, LOOP_CLR_FD) = 0 [pid 752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 750] <... futex resumed>) = 0 [pid 756] <... set_robust_list resumed>) = 0 [pid 752] <... mmap resumed>) = 0x7f5cd2d00000 [pid 750] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 752] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 750] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 752] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 750] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 756] rt_sigprocmask(SIG_SETMASK, [] [pid 752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 750] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 756] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 752] <... clone3 resumed> => {parent_tid=[757]}, 88) = 757 [pid 750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 754] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 752] rt_sigprocmask(SIG_SETMASK, [] [pid 750] <... mmap resumed>) = 0x7f5cd2d00000 [pid 752] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 750] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 752] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] close(4 [pid 752] <... futex resumed>) = 0 [pid 750] <... mprotect resumed>) = 0 [pid 752] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 750] rt_sigprocmask(SIG_BLOCK, ~[] [pid 754] <... close resumed>) = 0 [pid 754] close(3 [pid 756] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 750] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 756] <... prctl resumed>) = 0 [pid 750] <... clone3 resumed> => {parent_tid=[758]}, 88) = 758 [pid 750] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 756] setpgid(0, 0 [pid 750] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] <... setpgid resumed>) = 0 [pid 750] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 754] <... close resumed>) = 0 [pid 756] write(3, "1000", 4 [pid 755] <... write resumed>) = 1048576 [pid 754] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... futex resumed>) = 0 [pid 751] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] <... futex resumed>) = 1 [pid 754] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 754] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... futex resumed>) = 0 [pid 751] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] <... futex resumed>) = 1 [pid 754] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 754] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... futex resumed>) = 0 [pid 751] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] <... futex resumed>) = 1 [pid 754] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 754] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... futex resumed>) = 0 [pid 751] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] <... futex resumed>) = 1 [pid 754] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 754] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... futex resumed>) = 0 [pid 751] exit_group(0 [pid 756] <... write resumed>) = 4 [pid 751] <... exit_group resumed>) = ? [pid 756] close(3) = 0 [pid 754] <... futex resumed>) = ? [pid 756] write(1, "executing program\n", 18) = 18 executing program [pid 756] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 756] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 755] munmap(0x7f5cca900000, 138412032 [pid 756] <... mprotect resumed>) = 0 [pid 756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 757 attached [pid 756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 757] set_robust_list(0x7f5cd2d209a0, 24 [pid 755] <... munmap resumed>) = 0 [pid 757] <... set_robust_list resumed>) = 0 [pid 757] rt_sigprocmask(SIG_SETMASK, [] [pid 756] <... clone3 resumed> => {parent_tid=[759]}, 88) = 759 [pid 757] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 756] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 754] +++ exited with 0 +++ [pid 751] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=751, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 756] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 757] memfd_create("syzkaller", 0 [pid 755] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 757] <... memfd_create resumed>) = 3 [pid 755] <... openat resumed>) = 4 [pid 755] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 755] ioctl(4, LOOP_CLR_FD [pid 757] <... mmap resumed>) = 0x7f5cca900000 [pid 755] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 759 attached [pid 759] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 759] memfd_create("syzkaller", 0) = 3 [pid 759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 755] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 755] close(4) = 0 [pid 755] close(3ci2-android-6-1/strace-static-x86_64: Process 758 attached [pid 310] <... restart_syscall resumed>) = 0 [pid 758] set_robust_list(0x7f5cd2d209a0, 24 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 755] <... close resumed>) = 0 [pid 755] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] <... futex resumed>) = 1 [pid 755] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 760 [pid 755] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 755] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] <... futex resumed>) = 1 [pid 755] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 755] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] <... futex resumed>) = 1 [pid 755] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 758] <... set_robust_list resumed>) = 0 [pid 755] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 755] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] <... futex resumed>) = 1 [pid 755] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 755] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 753] exit_group(0) = ? [pid 755] <... futex resumed>) = ? [pid 758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 758] memfd_create("syzkaller", 0) = 3 [pid 757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 755] +++ exited with 0 +++ [pid 753] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=753, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0ci2-android-6-1/strace-static-x86_64: Process 760 attached [pid 760] set_robust_list(0x55555618f760, 24) = 0 [pid 760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 758] <... mmap resumed>) = 0x7f5cca900000 [pid 760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 760] setpgid(0, 0) = 0 [pid 760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 760] write(3, "1000", 4) = 4 [pid 760] close(3) = 0 [pid 760] write(1, "executing program\n", 18) = 18 [pid 760] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 760] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 760] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 760] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 760] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 760] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[761]}, 88) = 761 executing program [pid 760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 760] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... restart_syscall resumed>) = 0 [pid 760] <... futex resumed>) = 0 [pid 760] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 762 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 757] <... write resumed>) = 1048576 [pid 757] munmap(0x7f5cca900000, 138412032) = 0 [pid 757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 757] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 757] ioctl(4, LOOP_CLR_FD) = 0 [pid 759] <... write resumed>) = 1048576 [pid 757] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 762 attached ci2-android-6-1/strace-static-x86_64: Process 761 attached [pid 759] munmap(0x7f5cca900000, 138412032 [pid 758] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 757] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 757] close(4) = 0 [pid 757] close(3) = 0 [pid 759] <... munmap resumed>) = 0 [pid 759] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 759] ioctl(4, LOOP_SET_FD, 3 [pid 762] set_robust_list(0x55555618f760, 24 [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 759] ioctl(4, LOOP_CLR_FD) = 0 [pid 761] set_robust_list(0x7f5cd2d209a0, 24 [pid 762] <... set_robust_list resumed>) = 0 [pid 762] rt_sigprocmask(SIG_SETMASK, [] [pid 761] <... set_robust_list resumed>) = 0 [pid 762] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 761] rt_sigprocmask(SIG_SETMASK, [] [pid 762] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 761] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 762] <... prctl resumed>) = 0 [pid 761] memfd_create("syzkaller", 0 [pid 762] setpgid(0, 0 [pid 761] <... memfd_create resumed>) = 3 [pid 762] <... setpgid resumed>) = 0 [pid 761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 761] <... mmap resumed>) = 0x7f5cca900000 [pid 762] <... openat resumed>) = 3 [pid 761] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 762] write(3, "1000", 4 [pid 759] ioctl(4, LOOP_SET_FD, 3 [pid 762] <... write resumed>) = 4 [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 762] close(3 [pid 759] close(4 [pid 762] <... close resumed>) = 0 [pid 759] <... close resumed>) = 0 [pid 762] write(1, "executing program\n", 18 executing program [pid 759] close(3 [pid 762] <... write resumed>) = 18 [pid 759] <... close resumed>) = 0 [pid 757] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... futex resumed>) = 1 [pid 752] <... futex resumed>) = 0 [pid 762] <... futex resumed>) = 0 [pid 757] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 752] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 752] <... futex resumed>) = 1 [pid 762] <... mprotect resumed>) = 0 [pid 762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[763]}, 88) = 763 [pid 762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 762] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 759] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 759] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... futex resumed>) = 0 [pid 756] <... futex resumed>) = 0 [pid 752] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] <... write resumed>) = 1048576 [pid 757] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 756] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] <... write resumed>) = 1048576 [pid 759] <... futex resumed>) = 0 [pid 757] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 756] <... futex resumed>) = 1 [pid 759] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 759] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] munmap(0x7f5cca900000, 138412032 [pid 757] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] <... munmap resumed>) = 0 [pid 757] <... futex resumed>) = 1 [pid 756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 752] <... futex resumed>) = 0 [pid 757] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... futex resumed>) = 1 [pid 752] <... futex resumed>) = 0 [pid 757] truncate("./file1", 36262 [pid 756] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... futex resumed>) = 0 [pid 757] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 759] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 759] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 756] <... futex resumed>) = 0 [pid 757] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 757] <... futex resumed>) = 1 [pid 756] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 0 [pid 757] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 752] <... futex resumed>) = 0 [pid 757] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 752] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 758] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 757] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 759] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... openat resumed>) = 4 [pid 757] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] <... futex resumed>) = 1 [pid 758] ioctl(4, LOOP_SET_FD, 3 [pid 757] <... futex resumed>) = 1 [pid 756] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 0 [pid 757] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 0 [pid 757] read(-1 [pid 756] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 757] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 759] read(-1 [pid 758] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 757] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 752] <... futex resumed>) = 0 [pid 759] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 758] ioctl(4, LOOP_CLR_FD [pid 759] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 752] exit_group(0 [pid 759] <... futex resumed>) = 1 [pid 758] <... ioctl resumed>) = 0 [pid 756] <... futex resumed>) = 0 [pid 759] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... futex resumed>) = ? [pid 752] <... exit_group resumed>) = ? [pid 756] exit_group(0 [pid 761] munmap(0x7f5cca900000, 138412032 [pid 759] <... futex resumed>) = ? [pid 756] <... exit_group resumed>) = ? [pid 759] +++ exited with 0 +++ [pid 761] <... munmap resumed>) = 0 [pid 761] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 761] ioctl(4, LOOP_SET_FD, 3 [pid 757] +++ exited with 0 +++ [pid 752] +++ exited with 0 +++ [pid 761] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 761] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 763 attached [pid 763] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 763] memfd_create("syzkaller", 0 [pid 756] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=756, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=752, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 758] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 758] close(4) = 0 [pid 758] close(3) = 0 [pid 758] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 750] <... futex resumed>) = 0 [pid 758] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 750] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 750] <... futex resumed>) = 0 [pid 758] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] <... futex resumed>) = 0 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] truncate("./file1", 36262 [pid 750] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 750] <... futex resumed>) = 0 [pid 758] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] <... futex resumed>) = 0 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 758] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 761] close(4 [pid 750] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] <... close resumed>) = 0 [pid 761] close(3) = 0 [pid 758] <... futex resumed>) = 0 [pid 750] <... futex resumed>) = 1 [pid 750] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 311] <... openat resumed>) = 3 [pid 758] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 758] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 311] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 307] close(3 [pid 763] <... memfd_create resumed>) = 3 [pid 758] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... close resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 758] <... futex resumed>) = 1 [pid 763] <... mmap resumed>) = 0x7f5cca900000 [pid 758] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULLci2-android-6-1/strace-static-x86_64: Process 764 attached [pid 750] <... futex resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 761] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = 0 [pid 760] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 760] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... futex resumed>) = 1 [pid 761] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 750] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 764 [pid 761] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = 0 [pid 760] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 760] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... futex resumed>) = 1 [pid 761] truncate("./file1", 36262 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 758] <... futex resumed>) = 0 [pid 750] <... futex resumed>) = 1 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 758] read(-1 [pid 750] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 765 [pid 758] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 758] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 758] <... futex resumed>) = 1 [pid 750] <... futex resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 758] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 750] exit_group(0 [pid 761] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... futex resumed>) = ? [pid 750] <... exit_group resumed>) = ? [pid 761] <... futex resumed>) = 1 [pid 760] <... futex resumed>) = 0 [pid 758] +++ exited with 0 +++ [pid 761] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 760] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 760] <... futex resumed>) = 0 [pid 764] set_robust_list(0x55555618f760, 24 [pid 763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 761] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 750] +++ exited with 0 +++ [pid 761] <... futex resumed>) = 0 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=750, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 761] read(-1 [pid 760] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 761] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 760] <... futex resumed>) = 0 [pid 761] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... futex resumed>) = 0 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 761] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 760] exit_group(0 [pid 764] <... set_robust_list resumed>) = 0 [pid 761] <... futex resumed>) = ? [pid 760] <... exit_group resumed>) = ? [pid 764] rt_sigprocmask(SIG_SETMASK, [] [pid 761] +++ exited with 0 +++ [pid 760] +++ exited with 0 +++ [pid 764] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 763] <... write resumed>) = 1048576 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=760, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 763] munmap(0x7f5cca900000, 138412032 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 763] <... munmap resumed>) = 0 [pid 763] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 764] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 763] <... openat resumed>) = 4 [pid 763] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 763] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 765 attached [pid 764] <... prctl resumed>) = 0 [pid 765] set_robust_list(0x55555618f760, 24) = 0 [pid 764] setpgid(0, 0 [pid 765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 765] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 764] <... setpgid resumed>) = 0 [pid 765] <... prctl resumed>) = 0 [pid 765] setpgid(0, 0) = 0 [pid 765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 765] <... openat resumed>) = 3 [pid 765] write(3, "1000", 4 [pid 764] <... openat resumed>) = 3 [pid 764] write(3, "1000", 4 [pid 308] <... restart_syscall resumed>) = 0 [pid 764] <... write resumed>) = 4 [pid 764] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 764] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 764] write(1, "executing program\n", 18) = 18 executing program [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 766 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 764] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 764] <... futex resumed>) = 0 [pid 763] ioctl(4, LOOP_SET_FD, 3 [pid 764] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 763] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 763] close(4) = 0 [pid 763] close(3 [pid 764] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 763] <... close resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 765] <... write resumed>) = 4 [pid 765] close(3 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 764] <... mmap resumed>) = 0x7f5cd2d00000 [pid 310] <... openat resumed>) = 3 [pid 764] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 310] ioctl(3, LOOP_CLR_FD [pid 765] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 764] <... mprotect resumed>) = 0 [pid 310] close(3 [pid 765] write(1, "executing program\n", 18 [pid 310] <... close resumed>) = 0 [pid 765] <... write resumed>) = 18 [pid 764] rt_sigprocmask(SIG_BLOCK, ~[] executing program [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 764] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 765] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 765] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 765] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 765] <... mprotect resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 767 [pid 765] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 765] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 764] <... clone3 resumed> => {parent_tid=[768]}, 88) = 768 [pid 765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 765] <... clone3 resumed> => {parent_tid=[769]}, 88) = 769 [pid 764] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 765] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 764] <... futex resumed>) = 0 [pid 764] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 763] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 1 [pid 763] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 763] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 1 [pid 763] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 763] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 1 [pid 763] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 763] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 1 [pid 763] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 763] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] exit_group(0) = ? [pid 763] <... futex resumed>) = ? [pid 763] +++ exited with 0 +++ [pid 762] +++ exited with 0 +++ ci2-android-6-1/strace-static-x86_64: Process 768 attached [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=762, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 768] set_robust_list(0x7f5cd2d209a0, 24 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 768] <... set_robust_list resumed>) = 0 [pid 768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 768] memfd_create("syzkaller", 0) = 3 [pid 768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 766 attached [pid 766] set_robust_list(0x55555618f760, 24) = 0 [pid 766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 766] setpgid(0, 0) = 0 [pid 766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECci2-android-6-1/strace-static-x86_64: Process 769 attached ) = 3 [pid 769] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 769] memfd_create("syzkaller", 0 [pid 766] write(3, "1000", 4) = 4 [pid 769] <... memfd_create resumed>) = 3 [pid 766] close(3) = 0 [pid 766] write(1, "executing program\n", 18 [pid 769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 766] <... write resumed>) = 18 [pid 769] <... mmap resumed>) = 0x7f5cca900000 [pid 766] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 766] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 766] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 309] <... openat resumed>) = 3 [pid 766] <... mmap resumed>) = 0x7f5cd2d00000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 766] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 309] <... ioctl resumed>) = 0 [pid 766] <... mprotect resumed>) = 0 [pid 309] close(3 [pid 766] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... close resumed>) = 0 [pid 766] <... rt_sigprocmask resumed>, [], 8) = 0 executing program [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 766] <... clone3 resumed> => {parent_tid=[770]}, 88) = 770 [pid 766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 766] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 766] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 771 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 768] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 770 attached [pid 770] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 770] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 770] memfd_create("syzkaller", 0) = 3 [pid 770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 767 attached [pid 767] set_robust_list(0x55555618f760, 24) = 0 [pid 770] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 768] munmap(0x7f5cca900000, 138412032 [pid 767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 769] <... write resumed>) = 1048576 [pid 768] <... munmap resumed>) = 0 [pid 768] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 768] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 767] setpgid(0, 0 [pid 768] ioctl(4, LOOP_CLR_FD) = 0 [pid 767] <... setpgid resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 771 attached [pid 767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 771] set_robust_list(0x55555618f760, 24 [pid 769] munmap(0x7f5cca900000, 138412032 [pid 767] write(3, "1000", 4 [pid 771] <... set_robust_list resumed>) = 0 [pid 767] <... write resumed>) = 4 [pid 767] close(3 [pid 771] rt_sigprocmask(SIG_SETMASK, [] [pid 767] <... close resumed>) = 0 [pid 768] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 768] close(4) = 0 [pid 771] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 767] write(1, "executing program\n", 18 [pid 768] close(3 [pid 767] <... write resumed>) = 18 executing program [pid 767] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 767] <... futex resumed>) = 0 [pid 771] <... prctl resumed>) = 0 [pid 767] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 771] setpgid(0, 0 [pid 767] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 771] <... setpgid resumed>) = 0 [pid 767] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 767] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 767] <... mprotect resumed>) = 0 [pid 771] <... openat resumed>) = 3 [pid 767] rt_sigprocmask(SIG_BLOCK, ~[] [pid 771] write(3, "1000", 4 [pid 767] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 771] <... write resumed>) = 4 [pid 769] <... munmap resumed>) = 0 [pid 767] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 771] close(3 [pid 769] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 771] <... close resumed>) = 0 [pid 767] <... clone3 resumed> => {parent_tid=[772]}, 88) = 772 [pid 767] rt_sigprocmask(SIG_SETMASK, [] [pid 771] write(1, "executing program\n", 18 [pid 769] <... openat resumed>) = 4 [pid 769] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 769] ioctl(4, LOOP_CLR_FD) = 0 [pid 771] <... write resumed>) = 18 [pid 767] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 767] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] <... futex resumed>) = 0 [pid 767] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 771] <... futex resumed>) = 0 executing program [pid 771] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 771] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 768] <... close resumed>) = 0 [pid 769] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 769] close(4 [pid 771] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 771] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 769] <... close resumed>) = 0 [pid 769] close(3 [pid 768] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... mmap resumed>) = 0x7f5cd2d00000 [pid 771] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 764] <... futex resumed>) = 0 [pid 768] <... futex resumed>) = 1 [pid 764] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... mprotect resumed>) = 0 [pid 764] <... futex resumed>) = 0 [pid 768] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 764] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 771] rt_sigprocmask(SIG_BLOCK, ~[] [pid 768] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 768] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 764] <... futex resumed>) = 0 [pid 771] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 764] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 764] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 768] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 771] <... clone3 resumed> => {parent_tid=[773]}, 88) = 773 [pid 768] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... futex resumed>) = 0 [pid 764] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 764] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 768] <... futex resumed>) = 1 [pid 768] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 768] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... futex resumed>) = 0 [pid 764] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 764] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 768] <... futex resumed>) = 1 [pid 768] read(-1 [pid 769] <... close resumed>) = 0 [pid 768] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 768] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... futex resumed>) = 0 [pid 764] exit_group(0) = ? [pid 768] <... futex resumed>) = ? [pid 768] +++ exited with 0 +++ [pid 764] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=764, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 770] <... write resumed>) = 1048576 [pid 311] <... ioctl resumed>) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 769] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 773 attached ci2-android-6-1/strace-static-x86_64: Process 772 attached [pid 771] rt_sigprocmask(SIG_SETMASK, [] [pid 770] munmap(0x7f5cca900000, 138412032 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 769] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 765] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 771] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 770] <... munmap resumed>) = 0 [pid 769] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 774 [pid 772] set_robust_list(0x7f5cd2d209a0, 24 [pid 771] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 769] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 773] set_robust_list(0x7f5cd2d209a0, 24 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 774 attached [pid 772] <... set_robust_list resumed>) = 0 [pid 771] <... futex resumed>) = 0 [pid 770] <... openat resumed>) = 4 [pid 769] truncate("./file1", 36262 [pid 765] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 772] rt_sigprocmask(SIG_SETMASK, [] [pid 770] ioctl(4, LOOP_SET_FD, 3 [pid 769] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 765] <... futex resumed>) = 0 [pid 772] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... set_robust_list resumed>) = 0 [pid 773] rt_sigprocmask(SIG_SETMASK, [] [pid 774] set_robust_list(0x55555618f760, 24 [pid 772] memfd_create("syzkaller", 0 [pid 770] ioctl(4, LOOP_CLR_FD [pid 769] <... futex resumed>) = 0 [pid 765] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] <... set_robust_list resumed>) = 0 [pid 773] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 772] <... memfd_create resumed>) = 3 [pid 770] <... ioctl resumed>) = 0 [pid 769] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 765] <... futex resumed>) = 0 [pid 773] memfd_create("syzkaller", 0 [pid 772] <... mmap resumed>) = 0x7f5cca900000 [pid 769] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 765] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... memfd_create resumed>) = 3 [pid 774] rt_sigprocmask(SIG_SETMASK, [] [pid 773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 769] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 773] <... mmap resumed>) = 0x7f5cca900000 [pid 772] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 769] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 772] <... write resumed>) = 1048576 [pid 770] ioctl(4, LOOP_SET_FD, 3 [pid 769] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 772] munmap(0x7f5cca900000, 138412032 [pid 770] close(4 [pid 769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 765] <... futex resumed>) = 0 [pid 774] <... prctl resumed>) = 0 [pid 770] <... close resumed>) = 0 [pid 769] read(-1 [pid 765] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] setpgid(0, 0 [pid 770] close(3 [pid 769] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 774] <... setpgid resumed>) = 0 [pid 772] <... munmap resumed>) = 0 [pid 770] <... close resumed>) = 0 [pid 769] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 770] <... futex resumed>) = 1 [pid 769] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] <... futex resumed>) = 0 [pid 774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 770] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] exit_group(0 [pid 772] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = 0 [pid 765] <... exit_group resumed>) = ? [pid 770] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 769] <... futex resumed>) = ? [pid 766] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] +++ exited with 0 +++ [pid 765] +++ exited with 0 +++ [pid 770] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 770] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... openat resumed>) = 3 [pid 772] <... openat resumed>) = 4 [pid 770] <... futex resumed>) = 1 [pid 766] <... futex resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=765, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 774] write(3, "1000", 4 [pid 772] ioctl(4, LOOP_SET_FD, 3 [pid 770] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... write resumed>) = 4 [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = 0 [pid 772] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 770] truncate("./file1", 36262 [pid 766] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] close(3 [pid 772] ioctl(4, LOOP_CLR_FD [pid 770] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 774] <... close resumed>) = 0 [pid 773] <... write resumed>) = 1048576 [pid 772] <... ioctl resumed>) = 0 [pid 770] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 774] write(1, "executing program\n", 18) = 18 executing program [pid 774] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 774] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 774] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 774] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 774] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 774] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[775]}, 88) = 775 [pid 774] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 774] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 774] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 775 attached [pid 775] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 775] memfd_create("syzkaller", 0) = 3 [pid 775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 770] <... futex resumed>) = 1 [pid 766] <... futex resumed>) = 0 [pid 770] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = 0 [pid 770] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 766] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 773] munmap(0x7f5cca900000, 138412032 [pid 770] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 766] <... futex resumed>) = 0 [pid 770] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = 0 [pid 770] read(-1 [pid 766] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 773] <... munmap resumed>) = 0 [pid 770] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 770] <... futex resumed>) = 1 [pid 766] <... futex resumed>) = 0 [pid 770] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 773] <... openat resumed>) = 4 [pid 766] exit_group(0 [pid 772] ioctl(4, LOOP_SET_FD, 3 [pid 770] <... futex resumed>) = ? [pid 766] <... exit_group resumed>) = ? [pid 772] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 770] +++ exited with 0 +++ [pid 773] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 766] +++ exited with 0 +++ [pid 772] close(4) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=766, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 772] close(3 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 307] <... openat resumed>) = 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 307] close(3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] <... close resumed>) = 0 [pid 308] close(3 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 776 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 777 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 773] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 773] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 777 attached [pid 777] set_robust_list(0x55555618f760, 24) = 0 [pid 777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 777] setpgid(0, 0 [pid 773] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 773] close(4) = 0 [pid 773] close(3) = 0 [pid 773] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... futex resumed>) = 0 [pid 771] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 773] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... futex resumed>) = 0 [pid 771] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 773] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... futex resumed>) = 0 [pid 771] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 773] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... futex resumed>) = 0 [pid 771] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 773] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... close resumed>) = 0 [pid 771] <... futex resumed>) = 0 [pid 771] exit_group(0) = ? [pid 773] <... futex resumed>) = ? [pid 773] +++ exited with 0 +++ [pid 771] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=771, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 777] <... setpgid resumed>) = 0 [pid 777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 777] write(3, "1000", 4) = 4 [pid 777] close(3) = 0 [pid 772] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 767] <... futex resumed>) = 0 [pid 772] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 767] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 767] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 772] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 777] write(1, "executing program\n", 18) = 18 [pid 777] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 777] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 777] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 777] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 777] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 777] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 777] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[778]}, 88) = 778 [pid 777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 777] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] <... write resumed>) = 1048576 [pid 772] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 778 attached [pid 778] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 778] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 778] memfd_create("syzkaller", 0) = 3 [pid 778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 772] <... futex resumed>) = 1 [pid 767] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 776 attached [pid 775] munmap(0x7f5cca900000, 138412032 [pid 772] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 776] set_robust_list(0x55555618f760, 24 [pid 767] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... set_robust_list resumed>) = 0 [pid 775] <... munmap resumed>) = 0 [pid 772] <... futex resumed>) = 0 [pid 767] <... futex resumed>) = 1 [pid 772] truncate("./file1", 36262 [pid 776] rt_sigprocmask(SIG_SETMASK, [] [pid 775] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 772] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 767] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 779 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 778] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 772] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 767] <... futex resumed>) = 0 [pid 767] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 767] <... futex resumed>) = 0 [pid 767] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 772] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 772] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 775] <... openat resumed>) = 4 [pid 772] <... futex resumed>) = 1 [pid 767] <... futex resumed>) = 0 [pid 772] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 767] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 776] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 775] ioctl(4, LOOP_SET_FD, 3 [pid 772] read(-1 [pid 767] <... futex resumed>) = 0 [pid 776] <... prctl resumed>) = 0 [pid 772] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 767] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] setpgid(0, 0 [pid 775] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 772] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 776] <... setpgid resumed>) = 0 [pid 775] ioctl(4, LOOP_CLR_FD [pid 772] <... futex resumed>) = 0 [pid 767] exit_group(0 [pid 772] ???( [pid 767] <... exit_group resumed>) = ? [pid 772] <... ??? resumed>) = ? [pid 772] +++ exited with 0 +++ [pid 767] +++ exited with 0 +++ [pid 776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 775] <... ioctl resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=767, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 776] <... openat resumed>) = 3 [pid 778] <... write resumed>) = 1048576 [pid 778] munmap(0x7f5cca900000, 138412032) = 0 ci2-android-6-1/strace-static-x86_64: Process 779 attached [pid 779] set_robust_list(0x55555618f760, 24 [pid 776] write(3, "1000", 4 [pid 779] <... set_robust_list resumed>) = 0 [pid 779] rt_sigprocmask(SIG_SETMASK, [] [pid 778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 776] <... write resumed>) = 4 [pid 776] close(3) = 0 [pid 779] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 776] write(1, "executing program\n", 18) = 18 [pid 775] ioctl(4, LOOP_SET_FD, 3 [pid 776] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 776] <... futex resumed>) = 0 [pid 776] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 775] close(4 [pid 776] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 775] <... close resumed>) = 0 [pid 776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 775] close(3 [pid 776] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 779] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 778] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 778] ioctl(4, LOOP_CLR_FD) = 0 [pid 779] <... prctl resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 775] <... close resumed>) = 0 [pid 776] <... mmap resumed>) = 0x7f5cd2d00000 [pid 775] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 780 [pid 776] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 775] <... futex resumed>) = 1 [pid 774] <... futex resumed>) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 776] rt_sigprocmask(SIG_BLOCK, ~[] [pid 775] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 776] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 774] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 775] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = 1 [pid 776] <... clone3 resumed> => {parent_tid=[781]}, 88) = 781 [pid 775] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 775] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 774] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... futex resumed>) = 0 [pid 775] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 776] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 775] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 774] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] <... futex resumed>) = 0 [pid 775] truncate("./file1", 36262 [pid 774] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 775] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 774] <... futex resumed>) = 0 [pid 775] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 774] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] <... futex resumed>) = 0 [pid 775] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 774] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 775] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 774] <... futex resumed>) = 0 [pid 775] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 774] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] <... futex resumed>) = 0 [pid 775] read(-1 [pid 774] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 775] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 774] <... futex resumed>) = 0 [pid 775] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULLci2-android-6-1/strace-static-x86_64: Process 780 attached [pid 774] exit_group(0 [pid 775] <... futex resumed>) = ? [pid 774] <... exit_group resumed>) = ? [pid 779] setpgid(0, 0) = 0 [pid 779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 775] +++ exited with 0 +++ [pid 774] +++ exited with 0 +++ [pid 780] set_robust_list(0x55555618f760, 24 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=774, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 779] <... openat resumed>) = 3 [pid 779] write(3, "1000", 4) = 4 [pid 779] close(3) = 0 [pid 778] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 778] close(4) = 0 [pid 778] close(3 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 782 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 779] write(1, "executing program\n", 18) = 18 executing program [pid 779] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 779] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 779] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 779] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 779] rt_sigprocmask(SIG_BLOCK, ~[] [pid 780] <... set_robust_list resumed>) = 0 [pid 779] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 779] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 780] setpgid(0, 0 [pid 779] <... clone3 resumed> => {parent_tid=[783]}, 88) = 783 [pid 779] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 779] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 778] <... close resumed>) = 0 [pid 778] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] <... futex resumed>) = 0 [pid 777] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 778] <... futex resumed>) = 1 [pid 778] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 778] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] <... futex resumed>) = 0 [pid 777] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 778] <... futex resumed>) = 1 [pid 778] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 778] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] <... futex resumed>) = 0 [pid 777] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 778] <... futex resumed>) = 1 [pid 778] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 778] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] <... futex resumed>) = 0 [pid 777] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 778] <... futex resumed>) = 1 [pid 778] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 778] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] <... futex resumed>) = 0 [pid 777] exit_group(0) = ? [pid 778] <... futex resumed>) = ? [pid 778] +++ exited with 0 +++ [pid 777] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=777, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 781 attached ci2-android-6-1/strace-static-x86_64: Process 783 attached [pid 781] set_robust_list(0x7f5cd2d209a0, 24 [pid 783] set_robust_list(0x7f5cd2d209a0, 24ci2-android-6-1/strace-static-x86_64: Process 782 attached [pid 780] <... setpgid resumed>) = 0 [pid 782] set_robust_list(0x55555618f760, 24 [pid 780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 782] <... set_robust_list resumed>) = 0 [pid 780] <... openat resumed>) = 3 [pid 782] rt_sigprocmask(SIG_SETMASK, [] [pid 780] write(3, "1000", 4 [pid 782] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 780] <... write resumed>) = 4 [pid 782] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 780] close(3 [pid 782] <... prctl resumed>) = 0 [pid 780] <... close resumed>) = 0 [pid 782] setpgid(0, 0 [pid 780] write(1, "executing program\n", 18 [pid 782] <... setpgid resumed>) = 0 [pid 780] <... write resumed>) = 18 [pid 782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC executing program [pid 780] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... set_robust_list resumed>) = 0 [pid 782] <... openat resumed>) = 3 [pid 780] <... futex resumed>) = 0 [pid 782] write(3, "1000", 4 [pid 780] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 782] <... write resumed>) = 4 [pid 780] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 782] close(3 [pid 780] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 782] <... close resumed>) = 0 [pid 780] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 782] write(1, "executing program\n", 18 [pid 780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 782] <... write resumed>) = 18 [pid 780] <... mmap resumed>) = 0x7f5cd2d00000 executing program [pid 782] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 782] <... futex resumed>) = 0 [pid 781] <... set_robust_list resumed>) = 0 [pid 780] <... mprotect resumed>) = 0 [pid 782] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 783] rt_sigprocmask(SIG_SETMASK, [] [pid 780] rt_sigprocmask(SIG_BLOCK, ~[] [pid 782] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 780] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 782] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 780] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 782] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 780] <... clone3 resumed> => {parent_tid=[784]}, 88) = 784 [pid 782] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 780] rt_sigprocmask(SIG_SETMASK, [] [pid 782] <... mprotect resumed>) = 0 [pid 781] rt_sigprocmask(SIG_SETMASK, [] [pid 780] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 783] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 781] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 782] rt_sigprocmask(SIG_BLOCK, ~[] [pid 780] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 780] <... futex resumed>) = 0 [pid 783] memfd_create("syzkaller", 0 [pid 782] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 781] memfd_create("syzkaller", 0 [pid 783] <... memfd_create resumed>) = 3 [pid 781] <... memfd_create resumed>) = 3 [pid 780] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 782] <... clone3 resumed> => {parent_tid=[785]}, 88) = 785 [pid 781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 783] <... mmap resumed>) = 0x7f5cca900000 [pid 782] rt_sigprocmask(SIG_SETMASK, [] [pid 781] <... mmap resumed>) = 0x7f5cca900000 [pid 307] <... restart_syscall resumed>) = 0 [pid 782] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 786 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 786 attached [pid 786] set_robust_list(0x55555618f760, 24 [pid 782] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 784 attached ) = 0 [pid 784] set_robust_list(0x7f5cd2d209a0, 24 [pid 782] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 786] <... set_robust_list resumed>) = 0 [pid 786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 786] setpgid(0, 0) = 0 [pid 786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 786] <... openat resumed>) = 3 [pid 786] write(3, "1000", 4) = 4 [pid 786] close(3ci2-android-6-1/strace-static-x86_64: Process 785 attached ) = 0 [pid 784] <... set_robust_list resumed>) = 0 [pid 785] set_robust_list(0x7f5cd2d209a0, 24 [pid 784] rt_sigprocmask(SIG_SETMASK, [] [pid 786] write(1, "executing program\n", 18) = 18 executing program [pid 785] <... set_robust_list resumed>) = 0 [pid 785] rt_sigprocmask(SIG_SETMASK, [] [pid 786] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 785] memfd_create("syzkaller", 0 [pid 786] <... futex resumed>) = 0 [pid 786] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 786] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 785] <... memfd_create resumed>) = 3 [pid 786] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 785] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 786] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 785] <... mmap resumed>) = 0x7f5cca900000 [pid 786] <... mprotect resumed>) = 0 [pid 784] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 784] memfd_create("syzkaller", 0 [pid 786] rt_sigprocmask(SIG_BLOCK, ~[] [pid 784] <... memfd_create resumed>) = 3 [pid 786] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 786] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[787]}, 88) = 787 [pid 786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 786] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 786] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 784] <... mmap resumed>) = 0x7f5cca900000 [pid 781] <... write resumed>) = 1048576 [pid 783] <... write resumed>) = 1048576 [pid 783] munmap(0x7f5cca900000, 138412032) = 0 [pid 781] munmap(0x7f5cca900000, 138412032) = 0 [pid 785] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 783] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 784] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 783] <... openat resumed>) = 4 [pid 781] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 783] ioctl(4, LOOP_SET_FD, 3 [pid 781] ioctl(4, LOOP_SET_FD, 3 [pid 783] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 783] ioctl(4, LOOP_CLR_FD [pid 781] ioctl(4, LOOP_CLR_FD [pid 783] <... ioctl resumed>) = 0 [pid 781] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 787 attached [pid 784] <... write resumed>) = 1048576 [pid 781] ioctl(4, LOOP_SET_FD, 3 [pid 783] ioctl(4, LOOP_SET_FD, 3 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 783] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 781] close(4 [pid 783] close(4 [pid 781] <... close resumed>) = 0 [pid 783] <... close resumed>) = 0 [pid 783] close(3 [pid 781] close(3 [pid 783] <... close resumed>) = 0 [pid 781] <... close resumed>) = 0 [pid 781] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 776] <... futex resumed>) = 0 [pid 787] set_robust_list(0x7f5cd2d209a0, 24 [pid 784] munmap(0x7f5cca900000, 138412032 [pid 776] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 787] <... set_robust_list resumed>) = 0 [pid 784] <... munmap resumed>) = 0 [pid 776] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 787] rt_sigprocmask(SIG_SETMASK, [] [pid 784] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 781] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 783] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... futex resumed>) = 0 [pid 779] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... futex resumed>) = 1 [pid 783] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 781] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 781] <... futex resumed>) = 1 [pid 776] <... futex resumed>) = 0 [pid 776] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 776] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 781] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 783] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... futex resumed>) = 0 [pid 779] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... futex resumed>) = 1 [pid 781] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] truncate("./file1", 36262 [pid 781] <... futex resumed>) = 1 [pid 776] <... futex resumed>) = 0 [pid 776] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 776] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 781] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 781] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 776] <... futex resumed>) = 0 [pid 783] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... futex resumed>) = 0 [pid 776] <... futex resumed>) = 0 [pid 779] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... futex resumed>) = 1 [pid 781] read(-1 [pid 783] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 781] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 783] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 781] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] <... futex resumed>) = 1 [pid 776] <... futex resumed>) = 0 [pid 779] <... futex resumed>) = 0 [pid 779] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] exit_group(0 [pid 783] <... futex resumed>) = 1 [pid 776] <... exit_group resumed>) = ? [pid 783] read(-1 [pid 781] +++ exited with 0 +++ [pid 776] +++ exited with 0 +++ [pid 783] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=776, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 787] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 784] <... openat resumed>) = 4 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 787] memfd_create("syzkaller", 0 [pid 784] ioctl(4, LOOP_SET_FD, 3 [pid 783] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... futex resumed>) = 0 [pid 779] exit_group(0) = ? [pid 783] <... futex resumed>) = ? [pid 784] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... restart_syscall resumed>) = 0 [pid 787] <... memfd_create resumed>) = 3 [pid 784] ioctl(4, LOOP_CLR_FD [pid 787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 785] <... write resumed>) = 1048576 [pid 784] <... ioctl resumed>) = 0 [pid 787] <... mmap resumed>) = 0x7f5cca900000 [pid 785] munmap(0x7f5cca900000, 138412032 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 783] +++ exited with 0 +++ [pid 779] +++ exited with 0 +++ [pid 308] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=779, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 308] ioctl(3, LOOP_CLR_FD [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 784] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 788 [pid 784] close(4 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 784] <... close resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 784] close(3ci2-android-6-1/strace-static-x86_64: Process 788 attached [pid 788] set_robust_list(0x55555618f760, 24) = 0 [pid 788] rt_sigprocmask(SIG_SETMASK, [] [pid 784] <... close resumed>) = 0 [pid 788] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 788] setpgid(0, 0) = 0 [pid 788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 788] write(3, "1000", 4 [pid 787] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 784] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] <... write resumed>) = 4 [pid 784] <... futex resumed>) = 1 [pid 780] <... futex resumed>) = 0 [pid 784] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 780] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... munmap resumed>) = 0 [pid 780] <... futex resumed>) = 0 [pid 784] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 780] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 784] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] close(3) = 0 [pid 788] write(1, "executing program\n", 18) = 18 executing program [pid 788] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... restart_syscall resumed>) = 0 [pid 780] <... futex resumed>) = 0 [pid 784] <... futex resumed>) = 1 [pid 780] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 784] truncate("./file1", 36262 [pid 780] <... futex resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 780] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] ioctl(3, LOOP_CLR_FD [pid 784] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 785] <... openat resumed>) = 4 [pid 309] <... ioctl resumed>) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 789 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 788] <... futex resumed>) = 0 [pid 788] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 784] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 788] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 780] <... futex resumed>) = 0 [pid 785] ioctl(4, LOOP_SET_FD, 3 [pid 784] <... futex resumed>) = 1 [pid 780] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 780] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 784] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 785] ioctl(4, LOOP_CLR_FD [pid 784] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... ioctl resumed>) = 0 [pid 784] <... futex resumed>) = 1 [pid 780] <... futex resumed>) = 0 [pid 784] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 780] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 780] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 784] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 784] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 780] <... futex resumed>) = 0 [pid 788] <... clone3 resumed> => {parent_tid=[790]}, 88) = 790 [pid 780] exit_group(0 [pid 784] ???( [pid 780] <... exit_group resumed>) = ? [pid 784] <... ??? resumed>) = ? [pid 788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 788] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] +++ exited with 0 +++ [pid 780] +++ exited with 0 +++ [pid 785] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=780, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 785] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 785] close(4 [pid 788] <... futex resumed>) = 0 [pid 785] <... close resumed>) = 0 [pid 788] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 789 attached [pid 789] set_robust_list(0x55555618f760, 24) = 0 [pid 789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 789] setpgid(0, 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 791 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 789] <... setpgid resumed>) = 0 [pid 789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 789] write(3, "1000", 4) = 4 [pid 789] close(3) = 0 [pid 789] write(1, "executing program\n", 18) = 18 executing program [pid 789] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 789] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 789] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 789] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 789] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 789] rt_sigprocmask(SIG_BLOCK, ~[] [pid 785] close(3 [pid 789] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 789] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[792]}, 88) = 792 [pid 789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 789] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 789] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 787] <... write resumed>) = 1048576 [pid 787] munmap(0x7f5cca900000, 138412032) = 0 [pid 787] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 785] <... close resumed>) = 0 [pid 787] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 787] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 791 attached [pid 791] set_robust_list(0x55555618f760, 24) = 0 [pid 791] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 791] setpgid(0, 0 [pid 787] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 787] close(4 [pid 785] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 787] <... close resumed>) = 0 [pid 787] close(3) = 0 [pid 791] <... setpgid resumed>) = 0 [pid 791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 791] write(3, "1000", 4) = 4 [pid 791] close(3) = 0 [pid 791] write(1, "executing program\n", 18) = 18 [pid 791] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 791] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 791] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 791] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 executing program [pid 791] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 ci2-android-6-1/strace-static-x86_64: Process 790 attached [pid 785] <... futex resumed>) = 1 [pid 782] <... futex resumed>) = 0 [pid 785] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 782] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] set_robust_list(0x7f5cd2d209a0, 24 [pid 785] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] <... futex resumed>) = 0 [pid 790] <... set_robust_list resumed>) = 0 [pid 785] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 782] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 791] rt_sigprocmask(SIG_BLOCK, ~[] [pid 785] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 790] rt_sigprocmask(SIG_SETMASK, [] [pid 785] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 785] <... futex resumed>) = 1 [pid 782] <... futex resumed>) = 0 [pid 790] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 785] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 782] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] <... futex resumed>) = 0 [pid 791] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 790] memfd_create("syzkaller", 0 [pid 785] truncate("./file1", 36262 [pid 782] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 790] <... memfd_create resumed>) = 3 [pid 785] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... clone3 resumed> => {parent_tid=[793]}, 88) = 793 [pid 782] <... futex resumed>) = 0 [pid 790] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 785] <... futex resumed>) = 1 [pid 791] rt_sigprocmask(SIG_SETMASK, [] [pid 785] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 782] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... mmap resumed>) = 0x7f5cca900000 [pid 785] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 782] <... futex resumed>) = 0 [pid 785] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... futex resumed>) = 0 [pid 782] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 785] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 782] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] <... futex resumed>) = 0 [pid 785] read(-1 [pid 782] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 791] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 785] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 787] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... futex resumed>) = 1 [pid 782] <... futex resumed>) = 0 [pid 785] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 791] <... futex resumed>) = 0 [pid 787] <... futex resumed>) = 1 [pid 786] <... futex resumed>) = 0 [pid 782] exit_group(0 [pid 791] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 787] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 786] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... futex resumed>) = ? [pid 782] <... exit_group resumed>) = ? [pid 787] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 786] <... futex resumed>) = 0 [pid 787] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 787] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] truncate("./file1", 36262 [pid 786] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] +++ exited with 0 +++ [pid 782] +++ exited with 0 +++ [pid 787] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 786] <... futex resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=782, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 787] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 787] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 786] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 787] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 786] <... futex resumed>) = 0 [pid 787] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 787] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] read(-1 [pid 786] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 787] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 786] <... futex resumed>) = 0 [pid 787] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 787] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 786] exit_group(0 [pid 787] <... futex resumed>) = ? [pid 786] <... exit_group resumed>) = ? [pid 790] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 787] +++ exited with 0 +++ [pid 786] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=786, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 793 attached [pid 793] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 793] memfd_create("syzkaller", 0) = 3 [pid 793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 792 attached [pid 792] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 792] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 790] <... write resumed>) = 1048576 [pid 792] memfd_create("syzkaller", 0) = 3 [pid 790] munmap(0x7f5cca900000, 138412032 [pid 792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 794 [pid 307] ioctl(3, LOOP_CLR_FD [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... ioctl resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 795 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 795 attached [pid 795] set_robust_list(0x55555618f760, 24 [pid 792] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 795] <... set_robust_list resumed>) = 0 [pid 795] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 795] setpgid(0, 0) = 0 [pid 795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 795] write(3, "1000", 4) = 4 [pid 795] close(3) = 0 [pid 795] write(1, "executing program\n", 18) = 18 executing program [pid 795] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 795] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 795] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 795] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 ci2-android-6-1/strace-static-x86_64: Process 794 attached [pid 794] set_robust_list(0x55555618f760, 24 [pid 795] rt_sigprocmask(SIG_BLOCK, ~[] [pid 793] <... write resumed>) = 1048576 [pid 792] <... write resumed>) = 1048576 [pid 790] <... munmap resumed>) = 0 [pid 795] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 794] <... set_robust_list resumed>) = 0 [pid 792] munmap(0x7f5cca900000, 138412032 [pid 795] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 794] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 796 attached , NULL, 8) = 0 [pid 793] munmap(0x7f5cca900000, 138412032 [pid 792] <... munmap resumed>) = 0 [pid 790] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 795] <... clone3 resumed> => {parent_tid=[796]}, 88) = 796 [pid 794] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 795] rt_sigprocmask(SIG_SETMASK, [] [pid 794] <... prctl resumed>) = 0 [pid 795] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 794] setpgid(0, 0 [pid 795] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... setpgid resumed>) = 0 [pid 795] <... futex resumed>) = 0 [pid 794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 795] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 794] <... openat resumed>) = 3 [pid 793] <... munmap resumed>) = 0 [pid 790] <... openat resumed>) = 4 [pid 794] write(3, "1000", 4) = 4 [pid 794] close(3) = 0 [pid 794] write(1, "executing program\n", 18) = 18 executing program [pid 794] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 794] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 794] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 794] rt_sigprocmask(SIG_BLOCK, ~[] [pid 793] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 790] ioctl(4, LOOP_SET_FD, 3 [pid 792] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 796] set_robust_list(0x7f5cd2d209a0, 24 [pid 794] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 794] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[797]}, 88) = 797 [pid 793] <... openat resumed>) = 4 [pid 790] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 794] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 794] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 797 attached [pid 797] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 797] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 797] memfd_create("syzkaller", 0) = 3 [pid 797] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 793] ioctl(4, LOOP_SET_FD, 3 [pid 790] ioctl(4, LOOP_CLR_FD [pid 793] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] <... ioctl resumed>) = 0 [pid 793] ioctl(4, LOOP_CLR_FD [pid 796] <... set_robust_list resumed>) = 0 [pid 792] <... openat resumed>) = 4 [pid 793] <... ioctl resumed>) = 0 [pid 796] rt_sigprocmask(SIG_SETMASK, [] [pid 792] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 796] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 792] ioctl(4, LOOP_CLR_FD) = 0 [pid 796] memfd_create("syzkaller", 0 [pid 797] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 793] ioctl(4, LOOP_SET_FD, 3 [pid 790] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 793] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 793] close(4 [pid 790] close(4 [pid 797] <... write resumed>) = 1048576 [pid 796] <... memfd_create resumed>) = 3 [pid 793] <... close resumed>) = 0 [pid 790] <... close resumed>) = 0 [pid 793] close(3 [pid 792] ioctl(4, LOOP_SET_FD, 3 [pid 790] close(3 [pid 797] munmap(0x7f5cca900000, 138412032) = 0 [pid 797] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 797] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 797] ioctl(4, LOOP_CLR_FD) = 0 [pid 796] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 790] <... close resumed>) = 0 [pid 796] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 797] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 797] close(4) = 0 [pid 797] close(3 [pid 793] <... close resumed>) = 0 [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] close(4 [pid 790] <... futex resumed>) = 1 [pid 793] <... futex resumed>) = 1 [pid 791] <... futex resumed>) = 0 [pid 788] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... futex resumed>) = 0 [pid 788] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 792] <... close resumed>) = 0 [pid 793] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 790] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 792] close(3 [pid 793] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 792] <... close resumed>) = 0 [pid 790] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 793] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] <... futex resumed>) = 1 [pid 792] <... futex resumed>) = 1 [pid 791] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 793] truncate("./file1", 36262 [pid 790] <... futex resumed>) = 1 [pid 792] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 788] <... futex resumed>) = 0 [pid 788] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 788] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 790] truncate("./file1", 36262 [pid 793] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 793] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 793] <... futex resumed>) = 1 [pid 792] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 790] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 791] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 793] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 792] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 790] <... futex resumed>) = 1 [pid 788] <... futex resumed>) = 0 [pid 788] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 788] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 793] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... futex resumed>) = 1 [pid 790] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 793] <... futex resumed>) = 1 [pid 790] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 791] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = 0 [pid 791] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 790] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] read(-1 [pid 792] truncate("./file1", 36262 [pid 797] <... close resumed>) = 0 [pid 790] <... futex resumed>) = 1 [pid 793] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 792] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 788] <... futex resumed>) = 0 [pid 788] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 788] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] read(-1 [pid 793] <... futex resumed>) = 1 [pid 791] <... futex resumed>) = 0 [pid 793] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 792] <... futex resumed>) = 1 [pid 791] exit_group(0 [pid 790] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 789] <... futex resumed>) = 0 [pid 793] <... futex resumed>) = ? [pid 792] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 791] <... exit_group resumed>) = ? [pid 789] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 789] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] <... futex resumed>) = 0 [pid 794] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] <... futex resumed>) = 1 [pid 797] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 797] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... futex resumed>) = 0 [pid 794] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] <... futex resumed>) = 1 [pid 797] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 797] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... futex resumed>) = 0 [pid 794] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] <... futex resumed>) = 1 [pid 797] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 797] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... futex resumed>) = 0 [pid 794] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] <... futex resumed>) = 1 [pid 797] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 797] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... futex resumed>) = 0 [pid 794] exit_group(0) = ? [pid 797] <... futex resumed>) = ? [pid 790] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] +++ exited with 0 +++ [pid 794] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=794, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 793] +++ exited with 0 +++ [pid 791] +++ exited with 0 +++ [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 790] <... futex resumed>) = 1 [pid 788] <... futex resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=791, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 792] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 790] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 788] exit_group(0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 792] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 790] <... futex resumed>) = ? [pid 788] <... exit_group resumed>) = ? [pid 792] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] +++ exited with 0 +++ [pid 788] +++ exited with 0 +++ [pid 789] <... futex resumed>) = 0 [pid 792] <... futex resumed>) = 1 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=788, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 789] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 792] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 789] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 792] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... openat resumed>) = 3 [pid 789] <... futex resumed>) = 0 [pid 792] <... futex resumed>) = 1 [pid 308] ioctl(3, LOOP_CLR_FD [pid 789] exit_group(0 [pid 792] ???( [pid 308] <... ioctl resumed>) = 0 [pid 792] <... ??? resumed>) = ? [pid 789] <... exit_group resumed>) = ? [pid 308] close(3 [pid 796] <... write resumed>) = 1048576 [pid 308] <... close resumed>) = 0 [pid 796] munmap(0x7f5cca900000, 138412032 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 796] <... munmap resumed>) = 0 [pid 796] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 796] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 796] ioctl(4, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 798 [pid 792] +++ exited with 0 +++ [pid 789] +++ exited with 0 +++ [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=789, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 796] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 798 attached [pid 798] set_robust_list(0x55555618f760, 24) = 0 [pid 798] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 798] setpgid(0, 0) = 0 [pid 798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 798] write(3, "1000", 4) = 4 [pid 798] close(3) = 0 [pid 798] write(1, "executing program\n", 18) = 18 [pid 798] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 796] close(4) = 0 [pid 796] close(3) = 0 [pid 796] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 1 [pid 796] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 796] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 1 [pid 796] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 796] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 1 [pid 796] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 796] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 1 [pid 796] read(-1 [pid 311] <... restart_syscall resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 311] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 311] <... ioctl resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 311] close(3 [pid 310] close(3 [pid 309] close(3 [pid 311] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 799 executing program executing program [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 800 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 801 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 796] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 796] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = 0 [pid 795] exit_group(0) = ? [pid 796] <... futex resumed>) = ? [pid 796] +++ exited with 0 +++ [pid 795] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=795, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 798] <... futex resumed>) = 0 [pid 798] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 798] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 798] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[802]}, 88) = 802 [pid 798] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 798] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 798] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 801 attached [pid 801] set_robust_list(0x55555618f760, 24) = 0 [pid 801] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 801] setpgid(0, 0) = 0 [pid 801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 801] write(3, "1000", 4) = 4 [pid 801] close(3) = 0 [pid 801] write(1, "executing program\n", 18) = 18 [pid 801] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 801] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 801] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 801] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 801] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 801] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 801] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[803]}, 88) = 803 [pid 801] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 799 attached , NULL, 8) = 0 [pid 801] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 801] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 799] set_robust_list(0x55555618f760, 24) = 0 [pid 799] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 800 attached , NULL, 8) = 0 [pid 800] set_robust_list(0x55555618f760, 24 [pid 799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 799] setpgid(0, 0) = 0 [pid 800] <... set_robust_list resumed>) = 0 [pid 799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 799] write(3, "1000", 4) = 4 [pid 799] close(3) = 0 [pid 799] write(1, "executing program\n", 18) = 18 executing program [pid 799] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 799] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 799] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 799] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 800] rt_sigprocmask(SIG_SETMASK, [] [pid 799] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 803 attached [pid 800] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 799] <... clone3 resumed> => {parent_tid=[804]}, 88) = 804 [pid 799] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 802 attached [pid 799] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 802] set_robust_list(0x7f5cd2d209a0, 24 [pid 799] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 802] <... set_robust_list resumed>) = 0 [pid 802] rt_sigprocmask(SIG_SETMASK, [] [pid 800] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 802] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 802] memfd_create("syzkaller", 0 [pid 800] <... prctl resumed>) = 0 [pid 802] <... memfd_create resumed>) = 3 [pid 802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 800] setpgid(0, 0 [pid 803] set_robust_list(0x7f5cd2d209a0, 24 [pid 800] <... setpgid resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 803] <... set_robust_list resumed>) = 0 [pid 800] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 805 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 802] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 805 attached [pid 805] set_robust_list(0x55555618f760, 24) = 0 [pid 805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 805] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 800] write(3, "1000", 4 [pid 805] <... prctl resumed>) = 0 [pid 805] setpgid(0, 0) = 0 [pid 805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 800] <... write resumed>) = 4 [pid 805] <... openat resumed>) = 3 [pid 800] close(3 [pid 805] write(3, "1000", 4) = 4 [pid 805] close(3) = 0 [pid 805] write(1, "executing program\n", 18) = 18 [pid 805] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 805] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 805] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 805] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[806]}, 88) = 806 [pid 805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 805] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 800] <... close resumed>) = 0 [pid 803] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 804 attached , NULL, 8) = 0 [pid 800] write(1, "executing program\n", 18) = 18 [pid 803] memfd_create("syzkaller", 0 executing program [pid 800] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 803] <... memfd_create resumed>) = 3 [pid 800] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 800] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 803] <... mmap resumed>) = 0x7f5cca900000 [pid 800] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 802] <... write resumed>) = 1048576 [pid 802] munmap(0x7f5cca900000, 138412032) = 0 [pid 802] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 802] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 802] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 806 attached [pid 806] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 806] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 806] memfd_create("syzkaller", 0) = 3 [pid 806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 802] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 802] close(4) = 0 [pid 802] close(3 [pid 800] <... mmap resumed>) = 0x7f5cd2d00000 [pid 800] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 800] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 800] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[807]}, 88) = 807 [pid 800] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 800] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 800] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 803] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 804] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 802] <... close resumed>) = 0 [pid 802] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = 0 [pid 798] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 798] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 802] <... futex resumed>) = 1 [pid 802] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 802] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = 0 [pid 798] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 798] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 802] <... futex resumed>) = 1 [pid 802] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 802] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = 0 [pid 798] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 798] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 802] <... futex resumed>) = 1 [pid 802] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 802] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = 0 [pid 798] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 798] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 802] <... futex resumed>) = 1 [pid 802] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 802] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = 0 [pid 798] exit_group(0 [pid 804] rt_sigprocmask(SIG_SETMASK, [] [pid 798] <... exit_group resumed>) = ? [pid 802] <... futex resumed>) = ? [pid 802] +++ exited with 0 +++ [pid 798] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=798, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 804] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 803] <... write resumed>) = 1048576 [pid 804] memfd_create("syzkaller", 0) = 3 [pid 804] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 806] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 806] munmap(0x7f5cca900000, 138412032) = 0 [pid 806] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 806] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 806] ioctl(4, LOOP_CLR_FD) = 0 [pid 803] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 807 attached [pid 807] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 807] memfd_create("syzkaller", 0) = 3 [pid 807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 804] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 807] <... mmap resumed>) = 0x7f5cca900000 [pid 803] <... munmap resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 806] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 806] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 806] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 806] close(3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 808 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 803] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 806] <... close resumed>) = 0 [pid 804] <... write resumed>) = 1048576 [pid 806] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... futex resumed>) = 0 [pid 805] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... futex resumed>) = 1 [pid 806] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 806] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... openat resumed>) = 4 [pid 805] <... futex resumed>) = 0 [pid 805] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... futex resumed>) = 1 [pid 806] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 803] ioctl(4, LOOP_SET_FD, 3 [pid 806] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... futex resumed>) = 0 [pid 805] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... futex resumed>) = 1 [pid 806] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 806] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... futex resumed>) = 0 [pid 805] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... futex resumed>) = 1 [pid 806] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 806] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... futex resumed>) = 0 [pid 805] exit_group(0 [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 805] <... exit_group resumed>) = ? [pid 806] <... futex resumed>) = ? [pid 806] +++ exited with 0 +++ [pid 805] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=805, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 808 attached [pid 807] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 808] set_robust_list(0x55555618f760, 24) = 0 [pid 808] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 808] setpgid(0, 0) = 0 [pid 808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 808] write(3, "1000", 4) = 4 [pid 808] close(3) = 0 [pid 808] write(1, "executing program\n", 18) = 18 [pid 808] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 808] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 808] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[809]}, 88) = 809 [pid 808] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 808] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 807] <... write resumed>) = 1048576 [pid 807] munmap(0x7f5cca900000, 138412032) = 0 [pid 807] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 807] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 807] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 809 attached [pid 809] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 809] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 809] memfd_create("syzkaller", 0) = 3 [pid 809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program [pid 803] ioctl(4, LOOP_CLR_FD) = 0 [pid 807] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 807] close(4) = 0 [pid 807] close(3 [pid 803] ioctl(4, LOOP_SET_FD, 3 [pid 804] munmap(0x7f5cca900000, 138412032 [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] close(4) = 0 [pid 803] close(3 [pid 807] <... close resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 810 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 807] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 800] <... futex resumed>) = 0 [pid 807] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 800] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 800] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 807] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 800] <... futex resumed>) = 0 [pid 807] truncate("./file1", 36262 [pid 800] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 807] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... futex resumed>) = 0 [pid 807] <... futex resumed>) = 0 [pid 800] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 800] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 807] <... futex resumed>) = 0 [pid 800] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 807] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 800] <... futex resumed>) = 0 [pid 807] read(-1 [pid 800] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 800] <... futex resumed>) = 0 [pid 800] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 807] <... futex resumed>) = 0 [pid 800] exit_group(0) = ? [pid 807] +++ exited with 0 +++ [pid 800] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=800, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 803] <... close resumed>) = 0 [pid 804] <... munmap resumed>) = 0 [pid 803] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 803] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] <... futex resumed>) = 0 [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 801] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 804] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 809] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 810 attached [pid 810] set_robust_list(0x55555618f760, 24 [pid 803] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 810] <... set_robust_list resumed>) = 0 [pid 810] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 810] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 803] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... prctl resumed>) = 0 [pid 810] setpgid(0, 0) = 0 [pid 810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 803] <... futex resumed>) = 1 [pid 804] <... openat resumed>) = 4 [pid 803] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] <... futex resumed>) = 0 [pid 801] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 801] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] ioctl(4, LOOP_SET_FD, 3 [pid 810] <... openat resumed>) = 3 [pid 803] truncate("./file1", 36262 [pid 804] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 810] write(3, "1000", 4) = 4 [pid 810] close(3) = 0 [pid 810] write(1, "executing program\n", 18) = 18 [pid 810] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 810] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 810] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 810] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 803] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 804] ioctl(4, LOOP_CLR_FD [pid 810] <... mprotect resumed>) = 0 [pid 810] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 810] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[811]}, 88) = 811 [pid 810] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 810] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 809] munmap(0x7f5cca900000, 138412032 [pid 803] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... restart_syscall resumed>) = 0 [pid 804] <... ioctl resumed>) = 0 [pid 803] <... futex resumed>) = 1 [pid 801] <... futex resumed>) = 0 [pid 803] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] <... futex resumed>) = 0 [pid 803] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 801] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 803] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 801] <... futex resumed>) = 0 [pid 803] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 803] read(-1 [pid 801] <... futex resumed>) = 0 [pid 803] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 801] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 803] <... futex resumed>) = 0 [pid 803] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 803] <... futex resumed>) = ? [pid 801] <... exit_group resumed>) = ? [pid 803] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 801] +++ exited with 0 +++ [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 812 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=801, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 804] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 804] close(4) = 0 [pid 804] close(3 [pid 809] <... munmap resumed>) = 0 [pid 809] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 809] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 809] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 811 attached [pid 811] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 811] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 811] memfd_create("syzkaller", 0) = 3 [pid 811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 809] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 809] close(4) = 0 [pid 809] close(3 [pid 804] <... close resumed>) = 0 [pid 804] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] <... close resumed>) = 0 [pid 809] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 808] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 1 [pid 809] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 809] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 808] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 1 [pid 809] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 809] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 808] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 1 [pid 809] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 809] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 808] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 809] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 808] exit_group(0) = ? [pid 804] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 809] <... futex resumed>) = ? [pid 804] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 804] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] +++ exited with 0 +++ [pid 808] +++ exited with 0 +++ [pid 804] <... futex resumed>) = 1 [pid 799] <... futex resumed>) = 0 [pid 804] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=808, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 799] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 804] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 799] <... futex resumed>) = 0 [pid 804] truncate("./file1", 36262 [pid 799] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 804] <... truncate resumed>) = -1 EISDIR (Is a directory) ci2-android-6-1/strace-static-x86_64: Process 812 attached [pid 804] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 804] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 812] set_robust_list(0x55555618f760, 24 [pid 804] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 812] <... set_robust_list resumed>) = 0 [pid 804] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 804] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 804] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 804] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] exit_group(0 [pid 804] <... futex resumed>) = ? [pid 799] <... exit_group resumed>) = ? [pid 804] +++ exited with 0 +++ [pid 799] +++ exited with 0 +++ [pid 309] <... restart_syscall resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=799, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 812] rt_sigprocmask(SIG_SETMASK, [] [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 309] <... openat resumed>) = 3 [pid 311] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 311] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 311] close(3 [pid 309] <... close resumed>) = 0 [pid 812] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 812] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 813 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 814 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 811] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 308] <... restart_syscall resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 814 attached [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 814] set_robust_list(0x55555618f760, 24 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 814] <... set_robust_list resumed>) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 815 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 814] setpgid(0, 0) = 0 [pid 814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 812] <... prctl resumed>) = 0 [pid 812] setpgid(0, 0ci2-android-6-1/strace-static-x86_64: Process 815 attached [pid 814] write(3, "1000", 4) = 4 [pid 814] close(3) = 0 [pid 814] write(1, "executing program\n", 18) = 18 [pid 814] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... setpgid resumed>) = 0 executing program [pid 814] <... futex resumed>) = 0 [pid 814] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 814] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECci2-android-6-1/strace-static-x86_64: Process 813 attached [pid 815] set_robust_list(0x55555618f760, 24 [pid 814] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 814] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 814] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[816]}, 88) = 816 [pid 814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 812] <... openat resumed>) = 3 [pid 814] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 814] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 812] write(3, "1000", 4 [pid 815] <... set_robust_list resumed>) = 0 [pid 812] <... write resumed>) = 4 [pid 812] close(3) = 0 [pid 812] write(1, "executing program\n", 18 [pid 811] <... write resumed>) = 1048576 executing program [pid 811] munmap(0x7f5cca900000, 138412032 [pid 812] <... write resumed>) = 18 [pid 811] <... munmap resumed>) = 0 [pid 811] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 811] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 811] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 816 attached [pid 816] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 812] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 812] <... futex resumed>) = 0 [pid 812] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 816] memfd_create("syzkaller", 0) = 3 [pid 816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 815] rt_sigprocmask(SIG_SETMASK, [] [pid 812] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 812] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 815] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 813] set_robust_list(0x55555618f760, 24 [pid 812] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 811] ioctl(4, LOOP_SET_FD, 3 [pid 812] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 811] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 812] <... mmap resumed>) = 0x7f5cd2d00000 [pid 811] close(4) = 0 [pid 812] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 811] close(3 [pid 812] <... mprotect resumed>) = 0 [pid 812] rt_sigprocmask(SIG_BLOCK, ~[] [pid 815] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 812] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 815] <... prctl resumed>) = 0 [pid 812] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 815] setpgid(0, 0) = 0 [pid 812] <... clone3 resumed> => {parent_tid=[817]}, 88) = 817 [pid 815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 813] <... set_robust_list resumed>) = 0 [pid 812] rt_sigprocmask(SIG_SETMASK, [] [pid 811] <... close resumed>) = 0 [pid 812] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 811] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 810] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 811] <... futex resumed>) = 1 [pid 811] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 811] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 810] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 811] <... futex resumed>) = 1 [pid 811] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 811] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 810] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 811] <... futex resumed>) = 1 [pid 811] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 811] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 810] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 811] <... futex resumed>) = 1 [pid 811] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 811] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 810] exit_group(0) = ? [pid 811] <... futex resumed>) = ? [pid 812] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 812] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 815] <... openat resumed>) = 3 [pid 811] +++ exited with 0 +++ [pid 810] +++ exited with 0 +++ [pid 815] write(3, "1000", 4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=810, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 815] <... write resumed>) = 4 [pid 813] rt_sigprocmask(SIG_SETMASK, [] [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 815] close(3 [pid 813] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 815] <... close resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 815] write(1, "executing program\n", 18 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 815] <... write resumed>) = 18 [pid 813] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 815] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 818 [pid 813] <... prctl resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 815] <... futex resumed>) = 0 [pid 813] setpgid(0, 0 [pid 815] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 813] <... setpgid resumed>) = 0 [pid 815] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 815] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 813] <... openat resumed>) = 3 [pid 815] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 813] write(3, "1000", 4 [pid 815] rt_sigprocmask(SIG_BLOCK, ~[] [pid 813] <... write resumed>) = 4 [pid 815] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 813] close(3 [pid 815] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} executing program [pid 813] <... close resumed>) = 0 [pid 813] write(1, "executing program\n", 18 [pid 815] <... clone3 resumed> => {parent_tid=[819]}, 88) = 819 [pid 815] rt_sigprocmask(SIG_SETMASK, [] [pid 813] <... write resumed>) = 18 [pid 815] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 813] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 813] <... futex resumed>) = 0 [pid 815] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 813] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 816] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 817 attached [pid 817] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 817] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 817] memfd_create("syzkaller", 0) = 3 [pid 817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 818 attached [pid 813] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 818] set_robust_list(0x55555618f760, 24 [pid 813] <... mmap resumed>) = 0x7f5cd2d00000 [pid 818] <... set_robust_list resumed>) = 0 [pid 813] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 813] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 813] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 819 attached [pid 819] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 819] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 813] <... clone3 resumed> => {parent_tid=[820]}, 88) = 820 [pid 818] rt_sigprocmask(SIG_SETMASK, [] [pid 819] memfd_create("syzkaller", 0 [pid 813] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 813] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 813] <... futex resumed>) = 0 [pid 819] <... memfd_create resumed>) = 3 [pid 813] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 818] setpgid(0, 0) = 0 [pid 818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 818] write(3, "1000", 4) = 4 [pid 818] close(3) = 0 [pid 818] write(1, "executing program\n", 18) = 18 executing program [pid 818] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 818] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 819] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 818] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 818] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 818] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[821]}, 88) = 821 [pid 816] <... write resumed>) = 1048576 [pid 816] munmap(0x7f5cca900000, 138412032 [pid 818] rt_sigprocmask(SIG_SETMASK, [] [pid 816] <... munmap resumed>) = 0 [pid 818] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 820 attached [pid 820] set_robust_list(0x7f5cd2d209a0, 24 [pid 818] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 820] <... set_robust_list resumed>) = 0 [pid 816] <... openat resumed>) = 4 [pid 820] rt_sigprocmask(SIG_SETMASK, [] [pid 818] <... futex resumed>) = 0 [pid 820] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 820] memfd_create("syzkaller", 0 [pid 816] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 816] ioctl(4, LOOP_CLR_FD) = 0 [pid 818] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 820] <... memfd_create resumed>) = 3 [pid 820] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 816] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 816] close(4) = 0 [pid 816] close(3 [pid 817] <... write resumed>) = 1048576 [pid 816] <... close resumed>) = 0 [pid 816] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 0 [pid 814] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 814] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 816] <... futex resumed>) = 1 [pid 816] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 816] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 0 [pid 814] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 814] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 816] <... futex resumed>) = 1 [pid 816] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 816] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 0 [pid 814] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 814] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 816] <... futex resumed>) = 1 [pid 816] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 816] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 0 [pid 814] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 814] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 816] <... futex resumed>) = 1 [pid 816] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 816] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 0 [pid 814] exit_group(0) = ? [pid 816] <... futex resumed>) = ? [pid 816] +++ exited with 0 +++ [pid 814] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=814, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 817] munmap(0x7f5cca900000, 138412032) = 0 [pid 817] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 817] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 817] ioctl(4, LOOP_CLR_FD) = 0 [pid 820] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 822 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 817] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 817] close(4) = 0 [pid 817] close(3 [pid 820] <... write resumed>) = 1048576 [pid 817] <... close resumed>) = 0 [pid 819] <... write resumed>) = 1048576 [pid 819] munmap(0x7f5cca900000, 138412032) = 0 [pid 819] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 819] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 819] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 821 attached [pid 821] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 821] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 821] memfd_create("syzkaller", 0) = 3 [pid 821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 819] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 819] close(4) = 0 [pid 819] close(3ci2-android-6-1/strace-static-x86_64: Process 822 attached [pid 817] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 812] <... futex resumed>) = 0 [pid 822] set_robust_list(0x55555618f760, 24 [pid 817] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... set_robust_list resumed>) = 0 [pid 812] <... futex resumed>) = 1 [pid 817] <... futex resumed>) = 0 [pid 817] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 812] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 817] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 817] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 817] <... futex resumed>) = 0 [pid 817] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 817] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 817] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 817] <... futex resumed>) = 0 [pid 812] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 817] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 812] <... futex resumed>) = 0 [pid 817] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 817] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 812] <... futex resumed>) = 0 [pid 817] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... futex resumed>) = 0 [pid 812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 817] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] exit_group(0) = ? [pid 817] <... futex resumed>) = ? [pid 817] +++ exited with 0 +++ [pid 812] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=812, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 822] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 822] setpgid(0, 0) = 0 [pid 822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 821] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 819] <... close resumed>) = 0 [pid 819] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 819] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 820] munmap(0x7f5cca900000, 138412032) = 0 [pid 820] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 820] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 820] ioctl(4, LOOP_CLR_FD) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 823 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 820] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 820] close(4) = 0 [pid 820] close(3 [pid 815] <... futex resumed>) = 0 [pid 815] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 815] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] <... futex resumed>) = 0 [pid 819] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 819] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 815] <... futex resumed>) = 0 [pid 819] truncate("./file1", 36262 [pid 815] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 815] <... futex resumed>) = 0 [pid 819] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] <... futex resumed>) = 0 [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 819] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 815] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 815] <... futex resumed>) = 0 [pid 819] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 819] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 815] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 815] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... openat resumed>) = 3 [pid 820] <... close resumed>) = 0 [pid 815] <... futex resumed>) = 1 [pid 819] <... futex resumed>) = 0 [pid 815] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 819] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 815] <... futex resumed>) = 0 [pid 819] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] write(3, "1000", 4 [pid 821] <... write resumed>) = 1048576 [pid 815] exit_group(0 [pid 820] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 820] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 821] munmap(0x7f5cca900000, 138412032 [pid 819] <... futex resumed>) = ? [pid 815] <... exit_group resumed>) = ? [pid 813] <... futex resumed>) = 0 [pid 822] <... write resumed>) = 4 [pid 819] +++ exited with 0 +++ [pid 813] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... munmap resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 823 attached [pid 821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 823] set_robust_list(0x55555618f760, 24) = 0 [pid 823] rt_sigprocmask(SIG_SETMASK, [] [pid 821] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 821] ioctl(4, LOOP_CLR_FD) = 0 [pid 815] +++ exited with 0 +++ [pid 813] <... futex resumed>) = 1 [pid 820] <... futex resumed>) = 0 [pid 820] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 820] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 820] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 823] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=815, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 813] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 822] close(3 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 813] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 820] <... futex resumed>) = 0 [pid 813] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 820] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 813] <... futex resumed>) = 0 [pid 820] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 813] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 813] <... futex resumed>) = 0 [pid 820] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 820] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 813] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 820] <... futex resumed>) = 0 [pid 813] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 820] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 820] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... futex resumed>) = 0 [pid 822] <... close resumed>) = 0 [pid 813] exit_group(0 [pid 822] write(1, "executing program\n", 18 [pid 813] <... exit_group resumed>) = ? [pid 820] <... futex resumed>) = ? executing program [pid 822] <... write resumed>) = 18 [pid 820] +++ exited with 0 +++ [pid 813] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=813, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 821] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 821] close(4) = 0 [pid 821] close(3 [pid 822] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 822] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 822] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 824 [pid 822] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 822] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 308] <... openat resumed>) = 3 [pid 823] <... prctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 823] setpgid(0, 0 [pid 308] <... ioctl resumed>) = 0 [pid 822] <... mmap resumed>) = 0x7f5cd2d00000 [pid 308] close(3 [pid 823] <... setpgid resumed>) = 0 [pid 823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... close resumed>) = 0 [pid 822] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 823] <... openat resumed>) = 3 [pid 822] <... mprotect resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 823] write(3, "1000", 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 822] rt_sigprocmask(SIG_BLOCK, ~[] [pid 823] <... write resumed>) = 4 [pid 822] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 823] close(3) = 0 [pid 823] write(1, "executing program\n", 18) = 18 executing program [pid 823] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 824 attached [pid 822] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 825 [pid 823] <... futex resumed>) = 0 [pid 823] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 823] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 823] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 823] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 822] <... clone3 resumed> => {parent_tid=[826]}, 88) = 826 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 823] <... mprotect resumed>) = 0 [pid 822] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 824] set_robust_list(0x55555618f760, 24 [pid 823] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 823] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[827]}, 88) = 827 [pid 822] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 823] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 822] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 824] <... set_robust_list resumed>) = 0 [pid 822] <... futex resumed>) = 0 [pid 824] rt_sigprocmask(SIG_SETMASK, [] [pid 822] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 821] <... close resumed>) = 0 [pid 821] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 821] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULLci2-android-6-1/strace-static-x86_64: Process 825 attached [pid 825] set_robust_list(0x55555618f760, 24) = 0 [pid 825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 825] setpgid(0, 0) = 0 [pid 825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 824] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 818] <... futex resumed>) = 0 [pid 825] write(3, "1000", 4) = 4 [pid 825] close(3) = 0 [pid 825] write(1, "executing program\n", 18) = 18 [pid 825] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 825] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 825] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 825] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 825] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[828]}, 88) = 828 [pid 825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 825] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 827 attached [pid 827] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 827] memfd_create("syzkaller", 0) = 3 [pid 827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 executing program [pid 818] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = 1 [pid 824] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 821] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 818] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 821] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 821] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 821] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 824] <... prctl resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 824] setpgid(0, 0 [pid 818] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = 1 [pid 824] <... setpgid resumed>) = 0 [pid 821] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 821] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 821] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 818] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 824] <... openat resumed>) = 3 [pid 818] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... futex resumed>) = 0 [pid 824] write(3, "1000", 4 [pid 818] <... futex resumed>) = 1 [pid 821] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 818] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 824] <... write resumed>) = 4 [pid 824] close(3 [pid 821] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 821] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 818] <... futex resumed>) = 0 [pid 824] <... close resumed>) = 0 [pid 821] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 818] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 818] <... futex resumed>) = 0 [pid 824] write(1, "executing program\n", 18 [pid 821] read(-1 [pid 818] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 821] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 824] <... write resumed>) = 18 [pid 821] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 818] <... futex resumed>) = 0 executing program [pid 821] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 827] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 824] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] exit_group(0 [pid 821] <... futex resumed>) = ? [pid 824] <... futex resumed>) = 0 [pid 818] <... exit_group resumed>) = ? [pid 821] +++ exited with 0 +++ [pid 824] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 818] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=818, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 824] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 824] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3 [pid 824] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] <... close resumed>) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 824] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 829 [pid 824] <... mmap resumed>) = 0x7f5cd2d00000 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 824] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 824] <... mprotect resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 828 attached [pid 828] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 828] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 828] memfd_create("syzkaller", 0) = 3 [pid 824] rt_sigprocmask(SIG_BLOCK, ~[] [pid 828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 824] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 828] <... mmap resumed>) = 0x7f5cca900000 [pid 828] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 824] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 826 attached => {parent_tid=[830]}, 88) = 830 [pid 826] set_robust_list(0x7f5cd2d209a0, 24 [pid 824] rt_sigprocmask(SIG_SETMASK, [] [pid 826] <... set_robust_list resumed>) = 0 [pid 824] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 824] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 824] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 829 attached [pid 826] rt_sigprocmask(SIG_SETMASK, [] [pid 829] set_robust_list(0x55555618f760, 24) = 0 [pid 829] rt_sigprocmask(SIG_SETMASK, [] [pid 826] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 826] memfd_create("syzkaller", 0 [pid 829] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 829] setpgid(0, 0) = 0 [pid 829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 826] <... memfd_create resumed>) = 3 [pid 829] write(3, "1000", 4) = 4 [pid 829] close(3) = 0 [pid 829] write(1, "executing program\n", 18 [pid 826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 829] <... write resumed>) = 18 executing program [pid 829] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 829] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 826] <... mmap resumed>) = 0x7f5cca900000 [pid 829] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 829] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 829] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 829] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 829] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[831]}, 88) = 831 [pid 829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 829] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 829] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 830 attached [pid 830] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 830] rt_sigprocmask(SIG_SETMASK, [] [pid 826] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 830] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 827] <... write resumed>) = 1048576 [pid 830] memfd_create("syzkaller", 0 [pid 827] munmap(0x7f5cca900000, 138412032 [pid 830] <... memfd_create resumed>) = 3 [pid 830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 827] <... munmap resumed>) = 0 [pid 827] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 827] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 827] ioctl(4, LOOP_CLR_FD [pid 830] <... mmap resumed>) = 0x7f5cca900000 [pid 827] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 831 attached [pid 831] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 831] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 831] memfd_create("syzkaller", 0) = 3 [pid 831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 830] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 827] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 827] close(4) = 0 [pid 827] close(3) = 0 [pid 827] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... futex resumed>) = 0 [pid 823] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] <... futex resumed>) = 1 [pid 827] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 827] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... futex resumed>) = 0 [pid 823] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] <... write resumed>) = 1048576 [pid 827] <... futex resumed>) = 1 [pid 827] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 827] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... futex resumed>) = 0 [pid 823] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] <... futex resumed>) = 1 [pid 827] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 827] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... futex resumed>) = 0 [pid 823] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] <... futex resumed>) = 1 [pid 827] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 827] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... futex resumed>) = 0 [pid 823] exit_group(0) = ? [pid 828] munmap(0x7f5cca900000, 138412032 [pid 827] <... futex resumed>) = ? [pid 828] <... munmap resumed>) = 0 [pid 827] +++ exited with 0 +++ [pid 823] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=823, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 828] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 828] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 828] ioctl(4, LOOP_CLR_FD) = 0 [pid 826] <... write resumed>) = 1048576 [pid 828] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 828] close(4) = 0 [pid 828] close(3) = 0 [pid 826] munmap(0x7f5cca900000, 138412032 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3 [pid 826] <... munmap resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 826] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 832 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 831] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 826] <... openat resumed>) = 4 [pid 826] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 826] ioctl(4, LOOP_CLR_FD [pid 830] <... write resumed>) = 1048576 [pid 826] <... ioctl resumed>) = 0 [pid 828] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] <... futex resumed>) = 1 [pid 828] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 828] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] <... futex resumed>) = 1 [pid 828] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 828] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] <... futex resumed>) = 1 [pid 828] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 828] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] <... futex resumed>) = 1 [pid 828] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 828] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 0 [pid 828] <... futex resumed>) = 1 [pid 825] exit_group(0) = ? [pid 830] munmap(0x7f5cca900000, 138412032 [pid 828] +++ exited with 0 +++ [pid 825] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=825, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 826] ioctl(4, LOOP_SET_FD, 3 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 832 attached [pid 826] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 832] set_robust_list(0x55555618f760, 24) = 0 [pid 832] rt_sigprocmask(SIG_SETMASK, [] [pid 826] close(4 [pid 832] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 832] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 830] <... munmap resumed>) = 0 [pid 826] <... close resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 826] close(3 [pid 832] <... prctl resumed>) = 0 [pid 832] setpgid(0, 0) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... openat resumed>) = 3 [pid 832] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 832] write(3, "1000", 4 [pid 308] <... ioctl resumed>) = 0 [pid 832] <... write resumed>) = 4 [pid 831] <... write resumed>) = 1048576 [pid 308] close(3 [pid 832] close(3 [pid 308] <... close resumed>) = 0 [pid 832] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 832] write(1, "executing program\n", 18 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 executing program [pid 832] <... write resumed>) = 18 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 832] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 832] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 832] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 832] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 833 [pid 832] rt_sigprocmask(SIG_BLOCK, ~[] [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 832] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 832] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 831] munmap(0x7f5cca900000, 138412032 [pid 832] <... clone3 resumed> => {parent_tid=[834]}, 88) = 834 [pid 831] <... munmap resumed>) = 0 [pid 832] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 831] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 832] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] <... openat resumed>) = 4 [pid 832] <... futex resumed>) = 0 [pid 831] ioctl(4, LOOP_SET_FD, 3 [pid 832] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 831] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 831] ioctl(4, LOOP_CLR_FD) = 0 [pid 826] <... close resumed>) = 0 [pid 830] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 826] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 831] close(4) = 0 [pid 830] <... openat resumed>) = 4 [pid 826] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = 0 [pid 831] close(3 [pid 822] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] <... close resumed>) = 0 [pid 830] ioctl(4, LOOP_SET_FD, 3 [pid 826] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 822] <... futex resumed>) = 0 [pid 830] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 822] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] ioctl(4, LOOP_CLR_FD [pid 826] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 830] <... ioctl resumed>) = 0 [pid 826] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = 0 [pid 829] <... futex resumed>) = 0 [pid 826] truncate("./file1", 36262 [pid 822] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 822] <... futex resumed>) = 0 [pid 826] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 829] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 822] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 831] <... futex resumed>) = 1 [pid 826] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 831] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] <... futex resumed>) = 0 [pid 829] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 829] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 831] <... futex resumed>) = 1 [pid 831] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 831] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] <... futex resumed>) = 0 [pid 829] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 829] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 831] <... futex resumed>) = 1 [pid 831] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 831] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 833 attached [pid 826] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = 0 [pid 831] <... futex resumed>) = 1 [pid 830] ioctl(4, LOOP_SET_FD, 3 [pid 829] <... futex resumed>) = 0 [pid 826] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 822] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] read(-1 [pid 829] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... futex resumed>) = 0 [pid 831] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 830] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 829] <... futex resumed>) = 0 [pid 826] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 831] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 822] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 831] <... futex resumed>) = 0 [pid 829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 830] close(4 [pid 829] exit_group(0 [pid 826] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] <... futex resumed>) = ? [pid 829] <... exit_group resumed>) = ? ci2-android-6-1/strace-static-x86_64: Process 834 attached [pid 833] set_robust_list(0x55555618f760, 24 [pid 831] +++ exited with 0 +++ [pid 830] <... close resumed>) = 0 [pid 829] +++ exited with 0 +++ [pid 826] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = 0 [pid 834] set_robust_list(0x7f5cd2d209a0, 24 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=829, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 834] <... set_robust_list resumed>) = 0 [pid 830] close(3 [pid 826] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] rt_sigprocmask(SIG_SETMASK, [] [pid 826] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 822] <... futex resumed>) = 0 [pid 834] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 834] memfd_create("syzkaller", 0 [pid 307] <... openat resumed>) = 3 [pid 834] <... memfd_create resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 307] <... ioctl resumed>) = 0 [pid 834] <... mmap resumed>) = 0x7f5cca900000 [pid 307] close(3 [pid 834] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 833] <... set_robust_list resumed>) = 0 [pid 830] <... close resumed>) = 0 [pid 826] read(-1 [pid 822] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... close resumed>) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 833] rt_sigprocmask(SIG_SETMASK, [] [pid 830] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 835 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 833] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 830] <... futex resumed>) = 1 [pid 826] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] <... futex resumed>) = 0 [pid 824] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 826] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = 0 [pid 822] exit_group(0 [pid 824] <... futex resumed>) = 0 [pid 826] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 833] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 826] <... futex resumed>) = ? [pid 824] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 822] <... exit_group resumed>) = ? [pid 826] +++ exited with 0 +++ [pid 822] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=822, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 835 attached [pid 835] set_robust_list(0x55555618f760, 24) = 0 [pid 835] rt_sigprocmask(SIG_SETMASK, [] [pid 833] <... prctl resumed>) = 0 [pid 830] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 835] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 835] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 833] setpgid(0, 0 [pid 830] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] <... prctl resumed>) = 0 [pid 835] setpgid(0, 0) = 0 [pid 835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 830] <... futex resumed>) = 1 [pid 824] <... futex resumed>) = 0 [pid 833] <... setpgid resumed>) = 0 [pid 824] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] truncate("./file1", 36262 [pid 824] <... futex resumed>) = 0 [pid 835] <... openat resumed>) = 3 [pid 833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 824] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 833] <... openat resumed>) = 3 [pid 830] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] write(3, "1000", 4) = 4 [pid 830] <... futex resumed>) = 1 [pid 833] write(3, "1000", 4 [pid 824] <... futex resumed>) = 0 [pid 835] close(3 [pid 824] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] <... close resumed>) = 0 [pid 833] <... write resumed>) = 4 [pid 830] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 824] <... futex resumed>) = 0 [pid 835] write(1, "executing program\n", 18 [pid 824] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] <... write resumed>) = 18 [pid 835] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 835] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 835] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 835] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 833] close(3 [pid 830] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 833] <... close resumed>) = 0 [pid 830] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 833] write(1, "executing program\n", 18 [pid 830] <... futex resumed>) = 1 [pid 824] <... futex resumed>) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 833] <... write resumed>) = 18 [pid 830] read(-1 executing program [pid 824] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 833] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 824] <... futex resumed>) = 0 [pid 833] <... futex resumed>) = 0 [pid 830] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 833] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 830] <... futex resumed>) = 0 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 833] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 830] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 824] exit_group(0 [pid 311] <... ioctl resumed>) = 0 [pid 833] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 830] <... futex resumed>) = ? [pid 824] <... exit_group resumed>) = ? [pid 311] close(3 [pid 830] +++ exited with 0 +++ [pid 311] <... close resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 824] +++ exited with 0 +++ [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 836 [pid 833] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=824, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 833] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 833] <... mmap resumed>) = 0x7f5cd2d00000 [pid 833] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 833] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 835] rt_sigprocmask(SIG_BLOCK, ~[] [pid 833] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 835] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 835] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 833] <... clone3 resumed> => {parent_tid=[837]}, 88) = 837 [pid 835] <... clone3 resumed> => {parent_tid=[838]}, 88) = 838 [pid 833] rt_sigprocmask(SIG_SETMASK, [] [pid 835] rt_sigprocmask(SIG_SETMASK, [] [pid 833] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 835] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 833] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 833] <... futex resumed>) = 0 [pid 835] <... futex resumed>) = 0 [pid 835] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 834] <... write resumed>) = 1048576 [pid 833] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 834] munmap(0x7f5cca900000, 138412032) = 0 [pid 834] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 834] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 834] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 838 attached [pid 838] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 838] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 838] memfd_create("syzkaller", 0) = 3 [pid 838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 836 attached [pid 309] <... restart_syscall resumed>) = 0 [pid 836] set_robust_list(0x55555618f760, 24 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 834] ioctl(4, LOOP_SET_FD, 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... ioctl resumed>) = 0 [pid 834] close(4 [pid 309] close(3 [pid 834] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 836] <... set_robust_list resumed>) = 0 [pid 834] close(3 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 839 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 834] <... close resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 837 attached [pid 836] rt_sigprocmask(SIG_SETMASK, [] [pid 837] set_robust_list(0x7f5cd2d209a0, 24 [pid 836] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 838] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 837] <... set_robust_list resumed>) = 0 [pid 836] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 834] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... futex resumed>) = 0 [pid 832] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 832] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... futex resumed>) = 1 [pid 837] rt_sigprocmask(SIG_SETMASK, [] [pid 836] <... prctl resumed>) = 0 [pid 834] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 837] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 836] setpgid(0, 0 [pid 834] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... futex resumed>) = 0 [pid 832] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 832] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... futex resumed>) = 1 [pid 834] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 834] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... futex resumed>) = 0 [pid 832] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 832] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... futex resumed>) = 1 [pid 834] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 834] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... futex resumed>) = 0 [pid 832] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 832] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... futex resumed>) = 1 [pid 834] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 834] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] <... futex resumed>) = 0 [pid 834] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 832] exit_group(0 [pid 834] <... futex resumed>) = ? [pid 832] <... exit_group resumed>) = ? [pid 837] memfd_create("syzkaller", 0 [pid 836] <... setpgid resumed>) = 0 [pid 834] +++ exited with 0 +++ [pid 832] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=832, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 839 attached [pid 839] set_robust_list(0x55555618f760, 24) = 0 [pid 839] rt_sigprocmask(SIG_SETMASK, [] [pid 836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 839] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 839] setpgid(0, 0) = 0 [pid 839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 837] <... memfd_create resumed>) = 3 [pid 839] <... openat resumed>) = 3 [pid 836] <... openat resumed>) = 3 [pid 837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 839] write(3, "1000", 4) = 4 [pid 836] write(3, "1000", 4 [pid 837] <... mmap resumed>) = 0x7f5cca900000 [pid 836] <... write resumed>) = 4 [pid 839] close(3 [pid 836] close(3 executing program executing program [pid 837] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 836] <... close resumed>) = 0 [pid 839] <... close resumed>) = 0 [pid 836] write(1, "executing program\n", 18 [pid 839] write(1, "executing program\n", 18 [pid 836] <... write resumed>) = 18 [pid 839] <... write resumed>) = 18 [pid 836] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 839] <... futex resumed>) = 0 [pid 836] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 839] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 836] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 839] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 836] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 839] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 839] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 836] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 839] <... mmap resumed>) = 0x7f5cd2d00000 [pid 836] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 839] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 836] <... mmap resumed>) = 0x7f5cd2d00000 [pid 839] <... mprotect resumed>) = 0 [pid 836] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 839] rt_sigprocmask(SIG_BLOCK, ~[] [pid 836] <... mprotect resumed>) = 0 [pid 839] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 839] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 836] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 839] <... clone3 resumed> => {parent_tid=[840]}, 88) = 840 [pid 836] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 839] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 839] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 836] <... clone3 resumed> => {parent_tid=[841]}, 88) = 841 [pid 839] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 836] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 836] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 836] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 837] <... write resumed>) = 1048576 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 842 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 841 attached [pid 838] <... write resumed>) = 1048576 [pid 837] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 840 attached [pid 840] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 840] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 840] memfd_create("syzkaller", 0 [pid 837] <... munmap resumed>) = 0 [pid 838] munmap(0x7f5cca900000, 138412032 [pid 837] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 840] <... memfd_create resumed>) = 3 [pid 840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 842 attached [pid 841] set_robust_list(0x7f5cd2d209a0, 24 [pid 840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 838] <... munmap resumed>) = 0 [pid 837] <... openat resumed>) = 4 [pid 842] set_robust_list(0x55555618f760, 24 [pid 841] <... set_robust_list resumed>) = 0 [pid 838] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 837] ioctl(4, LOOP_SET_FD, 3 [pid 838] <... openat resumed>) = 4 [pid 841] rt_sigprocmask(SIG_SETMASK, [] [pid 837] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] ioctl(4, LOOP_CLR_FD [pid 838] ioctl(4, LOOP_SET_FD, 3 [pid 842] <... set_robust_list resumed>) = 0 [pid 841] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 837] <... ioctl resumed>) = 0 [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 841] memfd_create("syzkaller", 0 [pid 838] ioctl(4, LOOP_CLR_FD [pid 841] <... memfd_create resumed>) = 3 [pid 838] <... ioctl resumed>) = 0 [pid 841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 840] <... write resumed>) = 1048576 [pid 840] munmap(0x7f5cca900000, 138412032) = 0 [pid 840] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 840] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 840] ioctl(4, LOOP_CLR_FD) = 0 [pid 838] ioctl(4, LOOP_SET_FD, 3 [pid 837] ioctl(4, LOOP_SET_FD, 3 [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 838] close(4 [pid 837] close(4 [pid 842] rt_sigprocmask(SIG_SETMASK, [] [pid 841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 838] <... close resumed>) = 0 [pid 837] <... close resumed>) = 0 [pid 838] close(3 [pid 837] close(3 [pid 838] <... close resumed>) = 0 [pid 837] <... close resumed>) = 0 [pid 837] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 833] <... futex resumed>) = 0 [pid 833] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 833] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 837] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 838] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 838] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 835] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 835] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 837] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 833] <... futex resumed>) = 0 [pid 833] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 833] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 837] truncate("./file1", 36262 [pid 838] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 838] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 835] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] <... futex resumed>) = 0 [pid 835] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 837] <... futex resumed>) = 1 [pid 833] <... futex resumed>) = 0 [pid 833] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 833] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] truncate("./file1", 36262 [pid 837] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 838] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 837] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 838] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... futex resumed>) = 1 [pid 837] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 833] <... futex resumed>) = 0 [pid 838] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 837] read(-1 [pid 835] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 833] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 837] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 835] <... futex resumed>) = 0 [pid 833] <... futex resumed>) = 0 [pid 838] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 833] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... futex resumed>) = 0 [pid 837] <... futex resumed>) = 0 [pid 835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 833] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 838] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 833] exit_group(0 [pid 837] <... futex resumed>) = ? [pid 833] <... exit_group resumed>) = ? [pid 837] +++ exited with 0 +++ [pid 833] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=833, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 835] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... futex resumed>) = 0 [pid 835] <... futex resumed>) = 1 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 843 [pid 842] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 838] read(-1 [pid 835] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 842] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 838] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 842] <... prctl resumed>) = 0 [pid 838] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] setpgid(0, 0 [pid 838] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 842] <... setpgid resumed>) = 0 [pid 838] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 835] exit_group(0 [pid 842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 838] <... futex resumed>) = ? [pid 835] <... exit_group resumed>) = ? [pid 842] <... openat resumed>) = 3 [pid 838] +++ exited with 0 +++ [pid 842] write(3, "1000", 4) = 4 [pid 842] close(3) = 0 [pid 835] +++ exited with 0 +++ [pid 842] write(1, "executing program\n", 18 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=835, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=0} --- executing program [pid 842] <... write resumed>) = 18 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 842] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 842] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 842] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 842] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 842] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 842] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 842] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[844]}, 88) = 844 [pid 840] ioctl(4, LOOP_SET_FD, 3 [pid 842] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 842] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] <... futex resumed>) = 0 [pid 842] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 841] <... write resumed>) = 1048576 [pid 841] munmap(0x7f5cca900000, 138412032) = 0 [pid 841] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 841] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 841] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 844 attached [pid 844] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 844] memfd_create("syzkaller", 0 [pid 841] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 841] close(4) = 0 [pid 841] close(3) = 0 [pid 840] close(4) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 840] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 841] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 836] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 836] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 845 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 841] <... futex resumed>) = 1 [pid 841] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 841] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 836] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 836] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] <... futex resumed>) = 1 [pid 841] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 841] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 836] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 836] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] <... futex resumed>) = 1 [pid 841] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 841] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 836] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 836] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] <... futex resumed>) = 1 [pid 841] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 841] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 836] exit_group(0) = ? [pid 841] <... futex resumed>) = ? [pid 841] +++ exited with 0 +++ [pid 836] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=836, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 840] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 843 attached [pid 840] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 845 attached [pid 839] <... futex resumed>) = 0 [pid 840] <... futex resumed>) = 1 [pid 843] set_robust_list(0x55555618f760, 24 [pid 839] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] set_robust_list(0x55555618f760, 24 [pid 843] <... set_robust_list resumed>) = 0 [pid 840] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 839] <... futex resumed>) = 0 [pid 845] <... set_robust_list resumed>) = 0 [pid 843] rt_sigprocmask(SIG_SETMASK, [] [pid 840] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 839] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 840] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] rt_sigprocmask(SIG_SETMASK, [] [pid 843] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 840] <... futex resumed>) = 1 [pid 839] <... futex resumed>) = 0 [pid 845] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 843] <... prctl resumed>) = 0 [pid 840] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 839] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] setpgid(0, 0 [pid 839] <... futex resumed>) = 0 [pid 845] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 840] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] <... prctl resumed>) = 0 [pid 843] <... setpgid resumed>) = 0 [pid 840] truncate("./file1", 36262 [pid 839] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] setpgid(0, 0 [pid 843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 840] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 845] <... setpgid resumed>) = 0 [pid 844] <... memfd_create resumed>) = 3 [pid 843] <... openat resumed>) = 3 [pid 840] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] write(3, "1000", 4 [pid 845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 843] <... write resumed>) = 4 [pid 840] <... futex resumed>) = 1 [pid 839] <... futex resumed>) = 0 [pid 843] close(3 [pid 840] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 839] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... openat resumed>) = 3 [pid 844] <... mmap resumed>) = 0x7f5cca900000 [pid 843] <... close resumed>) = 0 [pid 840] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 839] <... futex resumed>) = 0 [pid 845] write(3, "1000", 4 [pid 843] write(1, "executing program\n", 18 [pid 840] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] <... write resumed>) = 4 [pid 843] <... write resumed>) = 18 [pid 840] <... futex resumed>) = 0 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] close(3 [pid 843] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] read(-1 [pid 839] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... close resumed>) = 0 [pid 843] <... futex resumed>) = 0 [pid 840] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 839] <... futex resumed>) = 0 [pid 845] write(1, "executing program\n", 18 [pid 843] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 840] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] <... write resumed>) = 18 [pid 843] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 840] <... futex resumed>) = 0 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program executing program [pid 843] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 845] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 840] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 839] exit_group(0 [pid 311] <... restart_syscall resumed>) = 0 [pid 845] <... futex resumed>) = 0 [pid 843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 840] <... futex resumed>) = ? [pid 839] <... exit_group resumed>) = ? [pid 845] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 844] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 843] <... mmap resumed>) = 0x7f5cd2d00000 [pid 840] +++ exited with 0 +++ [pid 839] +++ exited with 0 +++ [pid 845] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 843] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=839, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 844] <... write resumed>) = 1048576 [pid 844] munmap(0x7f5cca900000, 138412032) = 0 [pid 844] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 844] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 844] ioctl(4, LOOP_CLR_FD) = 0 [pid 311] <... openat resumed>) = 3 [pid 845] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 843] <... mprotect resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 845] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 843] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] <... ioctl resumed>) = 0 [pid 845] <... mmap resumed>) = 0x7f5cd2d00000 [pid 843] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] close(3 [pid 845] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 843] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 845] <... mprotect resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 845] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 845] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 843] <... clone3 resumed> => {parent_tid=[846]}, 88) = 846 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 843] rt_sigprocmask(SIG_SETMASK, [] [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 844] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 844] close(4 [pid 843] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 845] <... clone3 resumed> => {parent_tid=[847]}, 88) = 847 [pid 843] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 848 [pid 845] rt_sigprocmask(SIG_SETMASK, [] [pid 843] <... futex resumed>) = 0 [pid 845] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 845] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 845] <... futex resumed>) = 0 [pid 845] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 844] <... close resumed>) = 0 [pid 844] close(3ci2-android-6-1/strace-static-x86_64: Process 848 attached ci2-android-6-1/strace-static-x86_64: Process 847 attached ci2-android-6-1/strace-static-x86_64: Process 846 attached ) = 0 [pid 848] set_robust_list(0x55555618f760, 24 [pid 846] set_robust_list(0x7f5cd2d209a0, 24 [pid 848] <... set_robust_list resumed>) = 0 [pid 846] <... set_robust_list resumed>) = 0 [pid 848] rt_sigprocmask(SIG_SETMASK, [] [pid 846] rt_sigprocmask(SIG_SETMASK, [] [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 848] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 846] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] <... openat resumed>) = 3 [pid 848] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 846] memfd_create("syzkaller", 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 848] <... prctl resumed>) = 0 [pid 846] <... memfd_create resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 848] setpgid(0, 0 [pid 846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] close(3 [pid 848] <... setpgid resumed>) = 0 [pid 846] <... mmap resumed>) = 0x7f5cca900000 [pid 309] <... close resumed>) = 0 [pid 847] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 847] memfd_create("syzkaller", 0) = 3 [pid 847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 847] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 846] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 848] <... openat resumed>) = 3 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 848] write(3, "1000", 4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 848] <... write resumed>) = 4 [pid 844] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 842] <... futex resumed>) = 0 [pid 844] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 842] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] close(3 [pid 844] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 842] <... futex resumed>) = 0 [pid 848] <... close resumed>) = 0 [pid 844] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 842] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 849 [pid 848] write(1, "executing program\n", 18 [pid 844] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... write resumed>) = 18 [pid 844] truncate("./file1", 36262 [pid 842] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 848] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 844] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 842] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 848] <... futex resumed>) = 0 [pid 844] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 848] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 844] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 844] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 842] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 844] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 842] <... futex resumed>) = 0 [pid 848] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 844] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 844] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... mmap resumed>) = 0x7f5cd2d00000 [pid 844] read(-1 [pid 842] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 844] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 842] <... futex resumed>) = 0 [pid 848] <... mprotect resumed>) = 0 [pid 844] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 848] rt_sigprocmask(SIG_BLOCK, ~[] [pid 844] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 846] <... write resumed>) = 1048576 [pid 844] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 842] exit_group(0 [pid 848] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 846] munmap(0x7f5cca900000, 138412032 [pid 844] <... futex resumed>) = ? [pid 842] <... exit_group resumed>) = ? [pid 844] +++ exited with 0 +++ [pid 842] +++ exited with 0 +++ [pid 848] <... clone3 resumed> => {parent_tid=[850]}, 88) = 850 [pid 847] <... write resumed>) = 1048576 [pid 848] rt_sigprocmask(SIG_SETMASK, [] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=842, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 848] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 848] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... munmap resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 848] <... futex resumed>) = 0 [pid 846] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 848] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 310] ioctl(3, LOOP_CLR_FD [pid 846] <... openat resumed>) = 4 [pid 310] <... ioctl resumed>) = 0 [pid 846] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 846] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 849 attached [pid 849] set_robust_list(0x55555618f760, 24) = 0 [pid 849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 849] setpgid(0, 0) = 0 [pid 849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 849] write(3, "1000", 4) = 4 [pid 847] munmap(0x7f5cca900000, 138412032 [pid 849] close(3 [pid 847] <... munmap resumed>) = 0 [pid 849] <... close resumed>) = 0 [pid 849] write(1, "executing program\n", 18) = 18 executing program [pid 849] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 849] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 849] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 849] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 847] ioctl(4, LOOP_SET_FD, 3 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 846] ioctl(4, LOOP_CLR_FD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 847] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 847] ioctl(4, LOOP_CLR_FD [pid 849] rt_sigprocmask(SIG_BLOCK, ~[] [pid 846] <... ioctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 851 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 847] <... ioctl resumed>) = 0 [pid 849] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 849] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[852]}, 88) = 852 [pid 849] rt_sigprocmask(SIG_SETMASK, [] [pid 846] ioctl(4, LOOP_SET_FD, 3ci2-android-6-1/strace-static-x86_64: Process 850 attached ) = -1 EBUSY (Device or resource busy) [pid 850] set_robust_list(0x7f5cd2d209a0, 24 [pid 846] close(4 [pid 847] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 847] close(4) = 0 [pid 847] close(3 [pid 849] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 849] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 849] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 847] <... close resumed>) = 0 [pid 850] <... set_robust_list resumed>) = 0 [pid 846] <... close resumed>) = 0 [pid 846] close(3ci2-android-6-1/strace-static-x86_64: Process 851 attached [pid 851] set_robust_list(0x55555618f760, 24) = 0 [pid 851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 851] setpgid(0, 0) = 0 [pid 851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 846] <... close resumed>) = 0 [pid 850] rt_sigprocmask(SIG_SETMASK, [] [pid 847] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] <... openat resumed>) = 3 [pid 847] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 850] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 846] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... futex resumed>) = 0 [pid 845] <... futex resumed>) = 0 [pid 846] <... futex resumed>) = 1 [pid 843] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] <... futex resumed>) = 0 [pid 850] memfd_create("syzkaller", 0 [pid 846] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 843] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] <... memfd_create resumed>) = 3 [pid 846] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 846] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... mmap resumed>) = 0x7f5cca900000 [pid 846] <... futex resumed>) = 1 [pid 843] <... futex resumed>) = 0 [pid 846] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 843] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 843] <... futex resumed>) = 0 [pid 846] truncate("./file1", 36262 [pid 843] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 846] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 847] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 846] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 843] <... futex resumed>) = 0 [pid 843] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 843] <... futex resumed>) = 0 [pid 843] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 846] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 851] write(3, "1000", 4 [pid 847] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 845] <... futex resumed>) = 0 [pid 846] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 843] <... futex resumed>) = 0 [pid 846] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 843] <... futex resumed>) = 0 [pid 846] read(-1 [pid 843] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 846] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 851] <... write resumed>) = 4 [pid 847] truncate("./file1", 36262 [pid 846] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] close(3 [pid 847] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 846] <... futex resumed>) = 1 [pid 843] <... futex resumed>) = 0 [pid 846] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] <... close resumed>) = 0 [pid 847] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] exit_group(0 [pid 851] write(1, "executing program\n", 18 [pid 847] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 846] <... futex resumed>) = ? [pid 845] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... exit_group resumed>) = ? [pid 845] <... futex resumed>) = 0 [pid 851] <... write resumed>) = 18 [pid 847] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 851] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] <... mmap resumed>) = -1 EBADF (Bad file descriptor) executing program [pid 851] <... futex resumed>) = 0 [pid 847] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] +++ exited with 0 +++ [pid 845] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] +++ exited with 0 +++ [pid 851] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 847] <... futex resumed>) = 0 [pid 851] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 847] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=843, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 851] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 851] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 847] read(-1 [pid 845] <... futex resumed>) = 0 [pid 851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 847] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 845] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 851] <... mmap resumed>) = 0x7f5cd2d00000 [pid 847] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 847] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 851] <... mprotect resumed>) = 0 [pid 847] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] exit_group(0 [pid 851] rt_sigprocmask(SIG_BLOCK, ~[] [pid 847] <... futex resumed>) = ? [pid 845] <... exit_group resumed>) = ? [pid 851] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 847] +++ exited with 0 +++ [pid 851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 845] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=845, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 850] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 851] <... clone3 resumed> => {parent_tid=[853]}, 88) = 853 [pid 851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 852 attached [pid 851] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] set_robust_list(0x7f5cd2d209a0, 24 [pid 851] <... futex resumed>) = 0 [pid 852] <... set_robust_list resumed>) = 0 [pid 851] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 852] memfd_create("syzkaller", 0) = 3 [pid 852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 853 attached [pid 852] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 850] <... write resumed>) = 1048576 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 850] munmap(0x7f5cca900000, 138412032 [pid 853] set_robust_list(0x7f5cd2d209a0, 24 [pid 850] <... munmap resumed>) = 0 [pid 853] <... set_robust_list resumed>) = 0 [pid 850] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 853] rt_sigprocmask(SIG_SETMASK, [] [pid 850] <... openat resumed>) = 4 [pid 308] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 853] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 850] ioctl(4, LOOP_SET_FD, 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 853] memfd_create("syzkaller", 0 [pid 850] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 853] <... memfd_create resumed>) = 3 [pid 850] ioctl(4, LOOP_CLR_FD [pid 308] close(3 [pid 307] close(3 [pid 852] <... write resumed>) = 1048576 [pid 308] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 852] munmap(0x7f5cca900000, 138412032 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 852] <... munmap resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 852] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 852] <... openat resumed>) = 4 [pid 852] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 854 [pid 852] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 852] ioctl(4, LOOP_CLR_FD [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 852] <... ioctl resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 854 attached [pid 854] set_robust_list(0x55555618f760, 24) = 0 [pid 854] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 852] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 852] close(4) = 0 [pid 852] close(3) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 852] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... futex resumed>) = 0 [pid 849] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 850] <... ioctl resumed>) = 0 [pid 849] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 855 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 852] <... futex resumed>) = 1 [pid 852] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 852] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... futex resumed>) = 0 [pid 849] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 849] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 852] <... futex resumed>) = 1 [pid 852] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 852] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... futex resumed>) = 0 [pid 849] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] <... futex resumed>) = 1 [pid 849] <... futex resumed>) = 0 [pid 852] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 849] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 852] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 852] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 849] <... futex resumed>) = 0 [pid 852] read(-1 [pid 849] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 849] <... futex resumed>) = 0 [pid 852] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 852] <... futex resumed>) = 0 [pid 849] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 849] exit_group(0 [pid 852] <... futex resumed>) = ? [pid 849] <... exit_group resumed>) = ? ci2-android-6-1/strace-static-x86_64: Process 855 attached [pid 854] <... prctl resumed>) = 0 [pid 853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 850] ioctl(4, LOOP_SET_FD, 3 [pid 853] <... mmap resumed>) = 0x7f5cca900000 [pid 850] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 850] close(4 [pid 855] set_robust_list(0x55555618f760, 24 [pid 854] setpgid(0, 0 [pid 853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 852] +++ exited with 0 +++ [pid 850] <... close resumed>) = 0 [pid 849] +++ exited with 0 +++ [pid 855] <... set_robust_list resumed>) = 0 [pid 850] close(3 [pid 855] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 855] setpgid(0, 0) = 0 [pid 855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 855] write(3, "1000", 4) = 4 [pid 855] close(3 [pid 850] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=849, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 850] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 855] <... close resumed>) = 0 [pid 854] <... setpgid resumed>) = 0 [pid 853] <... write resumed>) = 1048576 [pid 850] <... futex resumed>) = 1 [pid 848] <... futex resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 850] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... futex resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 850] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 848] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] close(3 [pid 855] write(1, "executing program\n", 18 [pid 850] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 309] <... close resumed>) = 0 [pid 850] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 850] <... futex resumed>) = 1 [pid 848] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 850] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 855] <... write resumed>) = 18 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... futex resumed>) = 0 [pid 850] truncate("./file1", 36262 [pid 848] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 856 [pid 850] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 850] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 850] <... futex resumed>) = 1 [pid 848] <... futex resumed>) = 0 [pid 850] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... futex resumed>) = 0 [pid 850] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 848] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 850] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 848] <... futex resumed>) = 0 [pid 850] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... futex resumed>) = 0 [pid 850] read(-1 [pid 848] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 850] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 848] <... futex resumed>) = 0 [pid 850] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] exit_group(0 [pid 850] <... futex resumed>) = ? [pid 848] <... exit_group resumed>) = ? [pid 850] +++ exited with 0 +++ [pid 848] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=848, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 856 attached [pid 856] set_robust_list(0x55555618f760, 24) = 0 [pid 856] rt_sigprocmask(SIG_SETMASK, [] [pid 855] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 853] munmap(0x7f5cca900000, 138412032 [pid 855] <... futex resumed>) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 855] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 855] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 855] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... openat resumed>) = 3 [pid 855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 855] <... mmap resumed>) = 0x7f5cd2d00000 [pid 311] <... ioctl resumed>) = 0 [pid 855] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 311] close(3 [pid 855] <... mprotect resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 855] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 855] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 855] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 855] <... clone3 resumed> => {parent_tid=[857]}, 88) = 857 [pid 854] <... openat resumed>) = 3 [pid 855] rt_sigprocmask(SIG_SETMASK, [] [pid 854] write(3, "1000", 4 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 858 [pid 855] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 854] <... write resumed>) = 4 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 855] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] close(3 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 855] <... futex resumed>) = 0 [pid 854] <... close resumed>) = 0 [pid 855] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} executing program [pid 854] write(1, "executing program\n", 18) = 18 [pid 854] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 854] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 854] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 854] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 854] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 854] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[859]}, 88) = 859 [pid 854] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 854] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 854] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 853] <... munmap resumed>) = 0 [pid 856] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 856] setpgid(0, 0) = 0 [pid 853] openat(AT_FDCWD, "/dev/loop3", O_RDWRci2-android-6-1/strace-static-x86_64: Process 857 attached [pid 856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 853] <... openat resumed>) = 4 [pid 853] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 856] <... openat resumed>) = 3 [pid 853] ioctl(4, LOOP_CLR_FD) = 0 [pid 856] write(3, "1000", 4) = 4 [pid 856] close(3) = 0 [pid 856] write(1, "executing program\n", 18) = 18 [pid 856] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 executing program [pid 856] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 856] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 853] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 853] close(4) = 0 [pid 853] close(3 [pid 856] <... mprotect resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 858 attached [pid 857] set_robust_list(0x7f5cd2d209a0, 24 [pid 856] rt_sigprocmask(SIG_BLOCK, ~[] [pid 858] set_robust_list(0x55555618f760, 24 [pid 857] <... set_robust_list resumed>) = 0 [pid 856] <... rt_sigprocmask resumed>, [], 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 859 attached [pid 858] <... set_robust_list resumed>) = 0 [pid 857] rt_sigprocmask(SIG_SETMASK, [] [pid 856] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 859] set_robust_list(0x7f5cd2d209a0, 24 [pid 858] rt_sigprocmask(SIG_SETMASK, [] [pid 857] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 859] <... set_robust_list resumed>) = 0 [pid 858] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 857] memfd_create("syzkaller", 0 [pid 856] <... clone3 resumed> => {parent_tid=[860]}, 88) = 860 [pid 859] rt_sigprocmask(SIG_SETMASK, [] [pid 858] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 857] <... memfd_create resumed>) = 3 [pid 856] rt_sigprocmask(SIG_SETMASK, [] [pid 853] <... close resumed>) = 0 [pid 856] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 856] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 856] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 857] <... mmap resumed>) = 0x7f5cca900000 [pid 853] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] <... futex resumed>) = 0 [pid 851] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 851] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 853] <... futex resumed>) = 1 [pid 853] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 853] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] <... futex resumed>) = 0 [pid 851] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 851] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 853] <... futex resumed>) = 1 [pid 853] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 853] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] <... futex resumed>) = 0 [pid 851] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 851] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 853] <... futex resumed>) = 1 [pid 853] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 853] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 851] <... futex resumed>) = 0 [pid 853] read(-1 [pid 851] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] <... prctl resumed>) = 0 [pid 853] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 851] <... futex resumed>) = 0 [pid 853] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] setpgid(0, 0 [pid 853] <... futex resumed>) = 0 [pid 851] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 853] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] exit_group(0 [pid 853] <... futex resumed>) = ? [pid 851] <... exit_group resumed>) = ? [pid 853] +++ exited with 0 +++ [pid 851] +++ exited with 0 +++ [pid 858] <... setpgid resumed>) = 0 [pid 859] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=851, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 859] memfd_create("syzkaller", 0 [pid 858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 860 attached [pid 858] <... openat resumed>) = 3 [pid 859] <... memfd_create resumed>) = 3 [pid 858] write(3, "1000", 4 [pid 860] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 860] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 860] memfd_create("syzkaller", 0) = 3 [pid 860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 858] <... write resumed>) = 4 [pid 857] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 860] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 859] <... mmap resumed>) = 0x7f5cca900000 [pid 858] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 858] <... close resumed>) = 0 [pid 858] write(1, "executing program\n", 18 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 858] <... write resumed>) = 18 executing program [pid 858] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... openat resumed>) = 3 [pid 858] <... futex resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 858] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 310] <... ioctl resumed>) = 0 [pid 858] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 310] close(3 [pid 858] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 310] <... close resumed>) = 0 [pid 858] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 858] <... mmap resumed>) = 0x7f5cd2d00000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 858] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 861 [pid 858] <... mprotect resumed>) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 858] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 858] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 858] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[862]}, 88) = 862 [pid 858] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 858] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 860] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 861 attached [pid 861] set_robust_list(0x55555618f760, 24) = 0 [pid 861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 861] setpgid(0, 0) = 0 [pid 861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 861] write(3, "1000", 4 [pid 857] <... write resumed>) = 1048576 [pid 861] <... write resumed>) = 4 [pid 861] close(3) = 0 executing program [pid 861] write(1, "executing program\n", 18) = 18 [pid 861] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 861] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 861] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 860] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 862 attached [pid 862] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 861] <... mprotect resumed>) = 0 [pid 861] rt_sigprocmask(SIG_BLOCK, ~[] [pid 860] <... munmap resumed>) = 0 [pid 862] rt_sigprocmask(SIG_SETMASK, [] [pid 857] munmap(0x7f5cca900000, 138412032 [pid 862] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 862] memfd_create("syzkaller", 0) = 3 [pid 857] <... munmap resumed>) = 0 [pid 859] <... write resumed>) = 1048576 [pid 862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 857] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 861] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 859] munmap(0x7f5cca900000, 138412032 [pid 862] <... mmap resumed>) = 0x7f5cca900000 [pid 861] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 857] <... openat resumed>) = 4 [pid 860] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 859] <... munmap resumed>) = 0 [pid 860] <... openat resumed>) = 4 [pid 860] ioctl(4, LOOP_SET_FD, 3 [pid 857] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 857] ioctl(4, LOOP_CLR_FD) = 0 [pid 860] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 860] ioctl(4, LOOP_CLR_FD) = 0 [pid 861] <... clone3 resumed> => {parent_tid=[863]}, 88) = 863 [pid 861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 861] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 863 attached [pid 860] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 860] close(4) = 0 [pid 860] close(3) = 0 [pid 860] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 860] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 860] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 860] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 860] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 860] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 859] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 859] ioctl(4, LOOP_SET_FD, 3 [pid 857] ioctl(4, LOOP_SET_FD, 3 [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 857] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 859] ioctl(4, LOOP_CLR_FD [pid 857] close(4 [pid 860] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 860] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 860] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 857] <... close resumed>) = 0 [pid 860] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] exit_group(0) = ? [pid 860] +++ exited with 0 +++ [pid 857] close(3 [pid 856] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=856, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 863] set_robust_list(0x7f5cd2d209a0, 24 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 863] <... set_robust_list resumed>) = 0 [pid 863] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 859] <... ioctl resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 864 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 863] memfd_create("syzkaller", 0) = 3 [pid 863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 864 attached [pid 864] set_robust_list(0x55555618f760, 24) = 0 [pid 864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 857] <... close resumed>) = 0 [pid 859] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 864] setpgid(0, 0) = 0 [pid 859] close(4 [pid 857] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... close resumed>) = 0 [pid 859] close(3 [pid 864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 864] write(3, "1000", 4 [pid 857] <... futex resumed>) = 1 [pid 855] <... futex resumed>) = 0 [pid 857] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 855] <... futex resumed>) = 0 [pid 855] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 864] <... write resumed>) = 4 [pid 864] close(3) = 0 executing program [pid 864] write(1, "executing program\n", 18) = 18 [pid 859] <... close resumed>) = 0 [pid 857] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 864] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 857] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] <... futex resumed>) = 0 [pid 864] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 864] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 864] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 857] <... futex resumed>) = 1 [pid 855] <... futex resumed>) = 0 [pid 855] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] truncate("./file1", 36262 [pid 855] <... futex resumed>) = 0 [pid 855] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 857] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[865]}, 88) = 865 [pid 864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 864] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 864] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 863] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 857] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... futex resumed>) = 1 [pid 857] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] <... futex resumed>) = 0 [pid 859] <... futex resumed>) = 1 [pid 859] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... futex resumed>) = 0 [pid 855] <... futex resumed>) = 1 [pid 854] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 854] <... futex resumed>) = 0 [pid 854] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 859] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 857] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0ci2-android-6-1/strace-static-x86_64: Process 865 attached [pid 863] <... write resumed>) = 1048576 [pid 862] <... write resumed>) = 1048576 [pid 859] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 857] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 857] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 855] <... futex resumed>) = 0 [pid 857] read(-1 [pid 855] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 855] <... futex resumed>) = 0 [pid 857] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 857] <... futex resumed>) = 0 [pid 855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] exit_group(0 [pid 857] <... futex resumed>) = ? [pid 855] <... exit_group resumed>) = ? [pid 857] +++ exited with 0 +++ [pid 859] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 859] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 862] munmap(0x7f5cca900000, 138412032 [pid 855] +++ exited with 0 +++ [pid 854] <... futex resumed>) = 0 [pid 854] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 854] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... futex resumed>) = 0 [pid 859] truncate("./file1", 36262 [pid 865] set_robust_list(0x7f5cd2d209a0, 24 [pid 863] munmap(0x7f5cca900000, 138412032 [pid 865] <... set_robust_list resumed>) = 0 [pid 859] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 859] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 854] <... futex resumed>) = 0 [pid 859] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 854] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 854] <... futex resumed>) = 0 [pid 865] rt_sigprocmask(SIG_SETMASK, [] [pid 862] <... munmap resumed>) = 0 [pid 854] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 859] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 863] <... munmap resumed>) = 0 [pid 862] <... openat resumed>) = 4 [pid 865] memfd_create("syzkaller", 0 [pid 859] <... futex resumed>) = 1 [pid 854] <... futex resumed>) = 0 [pid 859] read(-1 [pid 862] ioctl(4, LOOP_SET_FD, 3 [pid 854] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] <... memfd_create resumed>) = 3 [pid 862] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 854] <... futex resumed>) = 0 [pid 863] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 854] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 859] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 854] <... futex resumed>) = 0 [pid 859] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] exit_group(0 [pid 859] <... futex resumed>) = ? [pid 854] <... exit_group resumed>) = ? [pid 859] +++ exited with 0 +++ [pid 865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 854] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=854, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 862] ioctl(4, LOOP_CLR_FD) = 0 [pid 863] <... openat resumed>) = 4 [pid 863] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 863] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 863] ioctl(4, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 866 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 866 attached [pid 866] set_robust_list(0x55555618f760, 24) = 0 [pid 866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 866] setpgid(0, 0) = 0 [pid 866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 866] write(3, "1000", 4) = 4 [pid 866] close(3) = 0 [pid 866] write(1, "executing program\n", 18) = 18 [pid 866] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 866] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 866] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 866] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 866] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 866] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[867]}, 88) = 867 [pid 866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 866] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 863] <... ioctl resumed>) = 0 [pid 862] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 865] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 862] close(4 [pid 308] <... restart_syscall resumed>) = 0 [pid 863] ioctl(4, LOOP_SET_FD, 3 [pid 862] <... close resumed>) = 0 [pid 863] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 862] close(3 [pid 863] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 862] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 866] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 308] ioctl(3, LOOP_CLR_FD [pid 863] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 863] close(3 [pid 862] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] close(3 [pid 863] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 863] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] <... futex resumed>) = 1 [pid 858] <... futex resumed>) = 0 [pid 858] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 862] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 862] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 868 [pid 862] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 862] <... futex resumed>) = 1 [pid 863] <... futex resumed>) = 1 [pid 858] <... futex resumed>) = 0 [pid 858] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] truncate("./file1", 36262 [pid 863] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 858] <... futex resumed>) = 0 [pid 862] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 858] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 862] <... futex resumed>) = 1 [pid 858] <... futex resumed>) = 0 [pid 858] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 863] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 863] <... futex resumed>) = 1 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] <... futex resumed>) = 1 [pid 858] <... futex resumed>) = 0 [pid 858] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] read(-1 [pid 863] truncate("./file1", 36262 [pid 862] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 863] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 862] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] <... futex resumed>) = 1 [pid 861] <... futex resumed>) = 0 [pid 858] <... futex resumed>) = 0 [pid 863] <... futex resumed>) = 1 [pid 862] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 861] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] exit_group(0) = ? [pid 863] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 862] <... futex resumed>) = ? [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] +++ exited with 0 +++ [pid 858] +++ exited with 0 +++ [pid 863] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=858, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 863] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] read(-1 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 863] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 863] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 861] <... futex resumed>) = 0 [pid 861] exit_group(0 [pid 863] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 861] <... exit_group resumed>) = ? [pid 863] <... futex resumed>) = ? [pid 863] +++ exited with 0 +++ [pid 861] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=861, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 865] <... write resumed>) = 1048576 [pid 865] munmap(0x7f5cca900000, 138412032ci2-android-6-1/strace-static-x86_64: Process 868 attached ) = 0 [pid 865] openat(AT_FDCWD, "/dev/loop2", O_RDWRci2-android-6-1/strace-static-x86_64: Process 867 attached [pid 868] set_robust_list(0x55555618f760, 24 [pid 865] <... openat resumed>) = 4 [pid 868] <... set_robust_list resumed>) = 0 [pid 865] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 865] ioctl(4, LOOP_CLR_FD) = 0 [pid 868] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 867] set_robust_list(0x7f5cd2d209a0, 24 [pid 868] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 867] <... set_robust_list resumed>) = 0 [pid 868] <... prctl resumed>) = 0 [pid 868] setpgid(0, 0 [pid 867] rt_sigprocmask(SIG_SETMASK, [] [pid 868] <... setpgid resumed>) = 0 [pid 867] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 868] write(3, "1000", 4 [pid 865] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 868] <... write resumed>) = 4 [pid 865] close(4 [pid 868] close(3 [pid 865] <... close resumed>) = 0 [pid 868] <... close resumed>) = 0 [pid 865] close(3 [pid 868] write(1, "executing program\n", 18 [pid 311] <... restart_syscall resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 311] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] ioctl(3, LOOP_CLR_FD [pid 311] <... ioctl resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 311] close(3 [pid 310] close(3 [pid 311] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] executing program [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 868] <... write resumed>) = 18 [pid 867] memfd_create("syzkaller", 0 [pid 865] <... close resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 868] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... memfd_create resumed>) = 3 [pid 865] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 870 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 869 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 868] <... futex resumed>) = 0 [pid 865] <... futex resumed>) = 1 [pid 864] <... futex resumed>) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0ci2-android-6-1/strace-static-x86_64: Process 869 attached [pid 868] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 865] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 864] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 865] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 864] <... futex resumed>) = 0 [pid 868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 867] <... mmap resumed>) = 0x7f5cca900000 [pid 865] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 870 attached [pid 870] set_robust_list(0x55555618f760, 24) = 0 [pid 864] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 868] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 865] <... futex resumed>) = 0 [pid 870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 870] setpgid(0, 0) = 0 [pid 870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 870] write(3, "1000", 4) = 4 [pid 870] close(3) = 0 [pid 870] write(1, "executing program\n", 18) = 18 [pid 870] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 870] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 870] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 870] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 870] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[871]}, 88) = 871 [pid 870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 870] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 871 attached [pid 871] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 871] memfd_create("syzkaller", 0) = 3 [pid 871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 executing program [pid 865] truncate("./file1", 36262 [pid 864] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... mmap resumed>) = 0x7f5cd2d00000 [pid 868] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 865] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 864] <... futex resumed>) = 0 [pid 864] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] <... mprotect resumed>) = 0 [pid 865] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 864] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] <... futex resumed>) = 0 [pid 868] rt_sigprocmask(SIG_BLOCK, ~[] [pid 864] <... futex resumed>) = 0 [pid 865] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 868] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 865] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 864] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 865] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 865] <... futex resumed>) = 0 [pid 865] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 865] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 869] set_robust_list(0x55555618f760, 24 [pid 868] <... clone3 resumed> => {parent_tid=[872]}, 88) = 872 [pid 864] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 865] read(-1 [pid 869] <... set_robust_list resumed>) = 0 [pid 868] rt_sigprocmask(SIG_SETMASK, [] [pid 865] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 865] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 865] <... futex resumed>) = 1 [pid 864] <... futex resumed>) = 0 [pid 868] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] exit_group(0 [pid 868] <... futex resumed>) = 0 [pid 864] <... exit_group resumed>) = ? [pid 865] <... futex resumed>) = ? [pid 868] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 865] +++ exited with 0 +++ [pid 864] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=864, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 871] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 869] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 872 attached [pid 872] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 872] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 872] memfd_create("syzkaller", 0) = 3 [pid 872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 867] <... write resumed>) = 1048576 [pid 869] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 869] setpgid(0, 0) = 0 [pid 867] munmap(0x7f5cca900000, 138412032 [pid 309] <... restart_syscall resumed>) = 0 [pid 869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 869] <... openat resumed>) = 3 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 873 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 869] write(3, "1000", 4) = 4 [pid 869] close(3) = 0 [pid 869] write(1, "executing program\n", 18) = 18 executing program [pid 869] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 869] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 867] <... munmap resumed>) = 0 [pid 869] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 869] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 869] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 869] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 867] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 869] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 867] <... openat resumed>) = 4 [pid 869] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0}ci2-android-6-1/strace-static-x86_64: Process 873 attached [pid 872] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 871] <... write resumed>) = 1048576 [pid 871] munmap(0x7f5cca900000, 138412032 [pid 869] <... clone3 resumed> => {parent_tid=[874]}, 88) = 874 [pid 869] rt_sigprocmask(SIG_SETMASK, [] [pid 871] <... munmap resumed>) = 0 [pid 869] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 871] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 871] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 871] ioctl(4, LOOP_CLR_FD) = 0 [pid 869] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 867] ioctl(4, LOOP_SET_FD, 3 [pid 873] set_robust_list(0x55555618f760, 24 [pid 869] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 867] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 867] ioctl(4, LOOP_CLR_FD) = 0 [pid 873] <... set_robust_list resumed>) = 0 [pid 873] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 874 attached [pid 871] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 871] close(4) = 0 [pid 871] close(3 [pid 867] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 867] close(4) = 0 [pid 873] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 873] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 867] close(3) = 0 [pid 873] <... prctl resumed>) = 0 [pid 873] setpgid(0, 0) = 0 [pid 873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 873] write(3, "1000", 4) = 4 [pid 873] close(3) = 0 [pid 873] write(1, "executing program\n", 18) = 18 executing program [pid 873] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 873] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 873] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 873] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 873] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[875]}, 88) = 875 [pid 873] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 873] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 874] set_robust_list(0x7f5cd2d209a0, 24 [pid 871] <... close resumed>) = 0 [pid 871] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... set_robust_list resumed>) = 0 [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... futex resumed>) = 1 [pid 871] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 874] rt_sigprocmask(SIG_SETMASK, [] [pid 871] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... futex resumed>) = 1 [pid 871] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 871] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... futex resumed>) = 1 [pid 871] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 871] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... futex resumed>) = 1 [pid 871] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 871] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] <... futex resumed>) = 0 [pid 870] exit_group(0) = ? [pid 874] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 871] <... futex resumed>) = ? [pid 874] memfd_create("syzkaller", 0 [pid 871] +++ exited with 0 +++ [pid 870] +++ exited with 0 +++ [pid 867] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=870, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 866] <... futex resumed>) = 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 866] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 866] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... futex resumed>) = 1 [pid 867] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 867] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... futex resumed>) = 0 [pid 866] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 866] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... futex resumed>) = 1 [pid 867] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 867] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... futex resumed>) = 0 [pid 866] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 866] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... futex resumed>) = 1 [pid 867] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 867] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... futex resumed>) = 0 [pid 866] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 866] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... futex resumed>) = 1 [pid 867] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 867] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... futex resumed>) = 0 [pid 866] exit_group(0) = ? [pid 874] <... memfd_create resumed>) = 3 [pid 867] <... futex resumed>) = ? [pid 874] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 872] <... write resumed>) = 1048576 [pid 867] +++ exited with 0 +++ [pid 866] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=866, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 872] munmap(0x7f5cca900000, 138412032) = 0 [pid 872] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 872] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 872] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 875 attached [pid 875] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 875] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 875] memfd_create("syzkaller", 0) = 3 [pid 875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 872] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 872] close(4) = 0 [pid 872] close(3) = 0 [pid 872] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = 0 [pid 868] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 868] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 872] <... futex resumed>) = 1 [pid 872] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 872] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = 0 [pid 868] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 868] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... restart_syscall resumed>) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] ioctl(3, LOOP_CLR_FD [pid 311] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 307] close(3 [pid 311] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 311] close(3 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] <... close resumed>) = 0 [pid 874] <... mmap resumed>) = 0x7f5cca900000 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 876 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 872] <... futex resumed>) = 1 [pid 872] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 872] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = 0 [pid 868] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 868] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 872] <... futex resumed>) = 1 [pid 872] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 872] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 877 [pid 868] <... futex resumed>) = 0 [pid 868] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 868] <... futex resumed>) = 0 [pid 868] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 872] <... futex resumed>) = 1 [pid 872] read(-1 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 872] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 872] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = 0 [pid 868] exit_group(0) = ? [pid 872] <... futex resumed>) = ? [pid 872] +++ exited with 0 +++ [pid 868] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=868, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 875] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 875] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 876 attached [pid 876] set_robust_list(0x55555618f760, 24) = 0 [pid 876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 876] setpgid(0, 0) = 0 [pid 876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 876] write(3, "1000", 4) = 4 [pid 876] close(3) = 0 [pid 876] write(1, "executing program\n", 18) = 18 [pid 876] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 876] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 876] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 876] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 876] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[878]}, 88) = 878 [pid 876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 876] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 875] munmap(0x7f5cca900000, 138412032 [pid 308] <... restart_syscall resumed>) = 0 executing program [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 875] <... munmap resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 875] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 875] <... openat resumed>) = 4 [pid 308] <... close resumed>) = 0 [pid 875] ioctl(4, LOOP_SET_FD, 3 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 875] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 875] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 878 attached [pid 878] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 878] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 879 [pid 878] memfd_create("syzkaller", 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 878] <... memfd_create resumed>) = 3 [pid 878] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 875] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 875] close(4) = 0 [pid 875] close(3ci2-android-6-1/strace-static-x86_64: Process 877 attached [pid 874] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 877] set_robust_list(0x55555618f760, 24 [pid 875] <... close resumed>) = 0 [pid 875] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 0 [pid 873] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... futex resumed>) = 1 [pid 875] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 875] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 0 [pid 873] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... futex resumed>) = 1 [pid 875] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 877] <... set_robust_list resumed>) = 0 [pid 875] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 0 [pid 873] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... futex resumed>) = 1 [pid 875] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 875] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 0 [pid 873] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... futex resumed>) = 1 [pid 875] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 875] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 0 [pid 873] exit_group(0) = ? [pid 875] <... futex resumed>) = ? [pid 875] +++ exited with 0 +++ [pid 873] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=873, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 878] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 877] rt_sigprocmask(SIG_SETMASK, [] [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 880 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 879 attached [pid 879] set_robust_list(0x55555618f760, 24) = 0 [pid 879] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 879] setpgid(0, 0) = 0 [pid 879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 877] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 879] <... openat resumed>) = 3 [pid 879] write(3, "1000", 4) = 4 [pid 879] close(3) = 0 [pid 879] write(1, "executing program\n", 18) = 18 [pid 879] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 executing program [pid 879] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 877] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 879] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 879] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 877] <... prctl resumed>) = 0 [pid 879] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 879] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[881]}, 88) = 881 [pid 879] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 879] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 880 attached [pid 880] set_robust_list(0x55555618f760, 24) = 0 [pid 880] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 880] setpgid(0, 0) = 0 [pid 880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 880] write(3, "1000", 4) = 4 [pid 880] close(3) = 0 [pid 880] write(1, "executing program\n", 18) = 18 [pid 880] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 880] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 880] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 880] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 880] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} executing program [pid 877] setpgid(0, 0 [pid 880] <... clone3 resumed> => {parent_tid=[882]}, 88) = 882 [pid 880] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 880] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 877] <... setpgid resumed>) = 0 [pid 877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 877] write(3, "1000", 4) = 4 [pid 877] close(3ci2-android-6-1/strace-static-x86_64: Process 881 attached [pid 881] set_robust_list(0x7f5cd2d209a0, 24 [pid 877] <... close resumed>) = 0 [pid 877] write(1, "executing program\n", 18 [pid 881] <... set_robust_list resumed>) = 0 [pid 877] <... write resumed>) = 18 executing program [pid 881] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 881] memfd_create("syzkaller", 0 [pid 877] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... memfd_create resumed>) = 3 [pid 881] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 877] <... futex resumed>) = 0 [pid 881] <... mmap resumed>) = 0x7f5cca900000 [pid 877] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 877] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 877] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 877] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 877] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 877] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 878] <... write resumed>) = 1048576 [pid 878] munmap(0x7f5cca900000, 138412032 [pid 877] <... clone3 resumed> => {parent_tid=[883]}, 88) = 883 [pid 877] rt_sigprocmask(SIG_SETMASK, [] [pid 878] <... munmap resumed>) = 0 [pid 877] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 877] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 877] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 878] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 878] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 878] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 882 attached [pid 882] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 882] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 882] memfd_create("syzkaller", 0) = 3 [pid 882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 878] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 878] close(4) = 0 [pid 878] close(3) = 0 ci2-android-6-1/strace-static-x86_64: Process 883 attached [pid 874] <... write resumed>) = 1048576 [pid 874] munmap(0x7f5cca900000, 138412032 [pid 883] set_robust_list(0x7f5cd2d209a0, 24 [pid 874] <... munmap resumed>) = 0 [pid 883] <... set_robust_list resumed>) = 0 [pid 881] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 878] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 878] <... futex resumed>) = 1 [pid 878] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 878] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 878] <... futex resumed>) = 1 [pid 878] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 878] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 878] <... futex resumed>) = 1 [pid 878] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 878] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 878] <... futex resumed>) = 1 [pid 878] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 878] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 876] exit_group(0) = ? [pid 878] <... futex resumed>) = ? [pid 874] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 883] rt_sigprocmask(SIG_SETMASK, [] [pid 874] <... openat resumed>) = 4 [pid 883] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 874] ioctl(4, LOOP_SET_FD, 3 [pid 883] memfd_create("syzkaller", 0 [pid 874] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... memfd_create resumed>) = 3 [pid 874] ioctl(4, LOOP_CLR_FD [pid 883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 874] <... ioctl resumed>) = 0 [pid 883] <... mmap resumed>) = 0x7f5cca900000 [pid 878] +++ exited with 0 +++ [pid 876] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=876, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 874] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 874] close(4) = 0 [pid 874] close(3 [pid 882] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 874] <... close resumed>) = 0 [pid 874] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... futex resumed>) = 0 [pid 874] <... futex resumed>) = 1 [pid 869] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 881] <... write resumed>) = 1048576 [pid 881] munmap(0x7f5cca900000, 138412032 [pid 869] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 881] <... munmap resumed>) = 0 [pid 874] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 869] <... futex resumed>) = 0 [pid 874] <... futex resumed>) = 1 [pid 869] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 869] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... openat resumed>) = 4 [pid 881] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 874] truncate("./file1", 36262 [pid 881] ioctl(4, LOOP_CLR_FD) = 0 [pid 882] <... write resumed>) = 1048576 [pid 882] munmap(0x7f5cca900000, 138412032) = 0 [pid 882] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 881] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 881] close(4) = 0 [pid 881] close(3 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 884 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 881] <... close resumed>) = 0 [pid 882] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 882] ioctl(4, LOOP_CLR_FD) = 0 [pid 881] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 879] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... futex resumed>) = 1 [pid 881] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 881] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 879] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... futex resumed>) = 1 [pid 881] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 881] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 879] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... futex resumed>) = 1 [pid 881] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 882] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 882] close(4) = 0 [pid 882] close(3 [pid 874] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 881] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 879] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... futex resumed>) = 1 [pid 881] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 881] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 879] exit_group(0 [pid 874] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... exit_group resumed>) = ? [pid 881] <... futex resumed>) = ? [pid 881] +++ exited with 0 +++ [pid 879] +++ exited with 0 +++ [pid 874] <... futex resumed>) = 1 [pid 869] <... futex resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 874] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 869] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 874] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 869] <... futex resumed>) = 0 [pid 869] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 869] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 874] <... futex resumed>) = 0 [pid 869] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 874] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 869] <... futex resumed>) = 0 [pid 874] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 869] exit_group(0 [pid 874] <... futex resumed>) = ? [pid 869] <... exit_group resumed>) = ? [pid 882] <... close resumed>) = 0 [pid 882] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 880] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] <... futex resumed>) = 1 [pid 882] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 882] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 874] +++ exited with 0 +++ [pid 869] +++ exited with 0 +++ [pid 880] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=869, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 882] <... futex resumed>) = 1 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 882] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 882] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 880] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] <... futex resumed>) = 1 [pid 882] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 882] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 880] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] <... futex resumed>) = 1 [pid 882] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 882] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 880] exit_group(0) = ? [pid 882] <... futex resumed>) = ? [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 882] +++ exited with 0 +++ [pid 880] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=880, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 884 attached [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 885 [pid 308] <... restart_syscall resumed>) = 0 [pid 884] set_robust_list(0x55555618f760, 24) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 884] rt_sigprocmask(SIG_SETMASK, [] [pid 308] <... openat resumed>) = 3 [pid 884] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 884] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... close resumed>) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 884] <... prctl resumed>) = 0 [pid 884] setpgid(0, 0) = 0 [pid 884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 884] write(3, "1000", 4 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 886 [pid 884] <... write resumed>) = 4 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 884] close(3 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 884] <... close resumed>) = 0 [pid 884] write(1, "executing program\n", 18) = 18 [pid 884] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 884] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 884] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 884] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 884] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 884] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[887]}, 88) = 887 executing program [pid 884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 884] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 884] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 885 attached [pid 885] set_robust_list(0x55555618f760, 24) = 0 [pid 885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 885] setpgid(0, 0) = 0 [pid 885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ci2-android-6-1/strace-static-x86_64: Process 886 attached [pid 886] set_robust_list(0x55555618f760, 24 [pid 885] write(3, "1000", 4) = 4 [pid 885] close(3 [pid 886] <... set_robust_list resumed>) = 0 [pid 885] <... close resumed>) = 0 [pid 886] rt_sigprocmask(SIG_SETMASK, [] [pid 885] write(1, "executing program\n", 18) = 18 [pid 885] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 886] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 885] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 886] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 885] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 885] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 886] <... prctl resumed>) = 0 [pid 886] setpgid(0, 0) = 0 [pid 886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 885] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 886] <... openat resumed>) = 3 [pid 885] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[888]}, 88) = 888 [pid 885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 886] write(3, "1000", 4 [pid 885] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... write resumed>) = 4 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 886] close(3) = 0 [pid 886] write(1, "executing program\n", 18) = 18 [pid 886] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 886] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 886] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[889]}, 88) = 889 [pid 886] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 886] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 887 attached [pid 887] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 887] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 887] memfd_create("syzkaller", 0) = 3 [pid 887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 executing program executing program [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 890 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 888 attached [pid 888] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 888] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 888] memfd_create("syzkaller", 0) = 3 [pid 888] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 888] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 889 attached [pid 889] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 889] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 889] memfd_create("syzkaller", 0) = 3 [pid 889] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 889] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 883] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 890 attached [pid 883] munmap(0x7f5cca900000, 138412032 [pid 890] set_robust_list(0x55555618f760, 24) = 0 [pid 883] <... munmap resumed>) = 0 [pid 890] rt_sigprocmask(SIG_SETMASK, [] [pid 883] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 890] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 883] <... openat resumed>) = 4 [pid 890] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 883] ioctl(4, LOOP_SET_FD, 3 [pid 890] <... prctl resumed>) = 0 [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 890] setpgid(0, 0 [pid 883] ioctl(4, LOOP_CLR_FD [pid 890] <... setpgid resumed>) = 0 [pid 883] <... ioctl resumed>) = 0 [pid 890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 890] write(3, "1000", 4) = 4 [pid 887] <... write resumed>) = 1048576 [pid 890] close(3 [pid 887] munmap(0x7f5cca900000, 138412032 [pid 890] <... close resumed>) = 0 [pid 890] write(1, "executing program\n", 18) = 18 [pid 887] <... munmap resumed>) = 0 executing program [pid 887] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 890] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 887] ioctl(4, LOOP_CLR_FD) = 0 [pid 890] <... futex resumed>) = 0 [pid 883] ioctl(4, LOOP_SET_FD, 3 [pid 890] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 890] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 883] close(4 [pid 890] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 883] <... close resumed>) = 0 [pid 890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 883] close(3 [pid 890] <... mmap resumed>) = 0x7f5cd2d00000 [pid 887] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 887] close(4) = 0 [pid 887] close(3 [pid 883] <... close resumed>) = 0 [pid 890] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 883] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 883] <... futex resumed>) = 1 [pid 877] <... futex resumed>) = 0 [pid 890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 877] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 877] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 890] <... clone3 resumed> => {parent_tid=[891]}, 88) = 891 [pid 890] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 890] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 890] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 883] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 888] <... write resumed>) = 1048576 [pid 888] munmap(0x7f5cca900000, 138412032) = 0 [pid 888] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 888] ioctl(4, LOOP_SET_FD, 3 [pid 883] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 888] ioctl(4, LOOP_CLR_FD) = 0 [pid 887] <... close resumed>) = 0 [pid 889] <... write resumed>) = 1048576 [pid 887] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 0 [pid 884] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 884] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 887] <... futex resumed>) = 1 [pid 887] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 887] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 0 [pid 884] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 884] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 887] <... futex resumed>) = 1 [pid 888] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 888] close(4) = 0 [pid 888] close(3) = 0 [pid 887] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 887] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 0 [pid 884] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 884] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 887] <... futex resumed>) = 1 [pid 887] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 887] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 0 [pid 884] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 884] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 887] <... futex resumed>) = 1 [pid 887] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 887] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 0 [pid 884] exit_group(0) = ? [pid 887] <... futex resumed>) = ? [pid 887] +++ exited with 0 +++ [pid 884] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=884, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 889] munmap(0x7f5cca900000, 138412032) = 0 [pid 889] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 889] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 889] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 891 attached [pid 891] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 891] memfd_create("syzkaller", 0) = 3 [pid 891] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 888] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 307] <... restart_syscall resumed>) = 0 [pid 877] <... futex resumed>) = 0 [pid 883] <... futex resumed>) = 1 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 883] truncate("./file1", 36262 [pid 877] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 892 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 889] close(4) = 0 [pid 889] close(3 [pid 877] <... futex resumed>) = 0 [pid 883] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 877] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 883] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 877] <... futex resumed>) = 0 [pid 883] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 877] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 883] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 877] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 883] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 877] <... futex resumed>) = 0 [pid 877] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] read(-1 [pid 877] <... futex resumed>) = 0 [pid 877] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 883] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 883] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 877] <... futex resumed>) = 0 [pid 877] exit_group(0 [pid 883] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 877] <... exit_group resumed>) = ? [pid 883] <... futex resumed>) = ? [pid 883] +++ exited with 0 +++ [pid 877] +++ exited with 0 +++ [pid 885] <... futex resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=877, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 885] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 885] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... futex resumed>) = 1 [pid 888] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 888] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... futex resumed>) = 1 [pid 888] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 888] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... futex resumed>) = 1 [pid 888] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 888] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... futex resumed>) = 1 [pid 888] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 888] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = 0 [pid 885] exit_group(0) = ? [pid 888] <... futex resumed>) = ? [pid 888] +++ exited with 0 +++ [pid 885] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=885, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 889] <... close resumed>) = 0 [pid 889] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... futex resumed>) = 0 [pid 886] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... futex resumed>) = 1 [pid 889] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 889] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... futex resumed>) = 0 [pid 886] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... futex resumed>) = 1 [pid 889] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 889] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... futex resumed>) = 0 [pid 886] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... futex resumed>) = 1 [pid 889] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 889] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... futex resumed>) = 0 [pid 886] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... futex resumed>) = 1 [pid 889] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 889] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... futex resumed>) = 0 [pid 886] exit_group(0) = ? [pid 889] <... futex resumed>) = ? [pid 889] +++ exited with 0 +++ [pid 886] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=886, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 891] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 892 attached [pid 310] <... restart_syscall resumed>) = 0 [pid 892] set_robust_list(0x55555618f760, 24) = 0 [pid 311] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 311] <... openat resumed>) = 3 [pid 310] close(3 [pid 311] ioctl(3, LOOP_CLR_FD [pid 892] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] <... close resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] close(3 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 311] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 892] setpgid(0, 0) = 0 [pid 892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 893 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 892] write(3, "1000", 4 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 892] <... write resumed>) = 4 [pid 892] close(3) = 0 [pid 892] write(1, "executing program\n", 18) = 18 [pid 892] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 894 [pid 892] <... futex resumed>) = 0 [pid 892] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} executing program [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 892] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 892] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 308] <... restart_syscall resumed>) = 0 [pid 891] <... write resumed>) = 1048576 [pid 892] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 892] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 892] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 892] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 892] <... clone3 resumed> => {parent_tid=[895]}, 88) = 895 [pid 308] <... ioctl resumed>) = 0 [pid 892] rt_sigprocmask(SIG_SETMASK, [] [pid 308] close(3 [pid 892] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... close resumed>) = 0 [pid 892] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 892] <... futex resumed>) = 0 [pid 892] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-android-6-1/strace-static-x86_64: Process 893 attached [pid 893] set_robust_list(0x55555618f760, 24) = 0 [pid 893] rt_sigprocmask(SIG_SETMASK, []ci2-android-6-1/strace-static-x86_64: Process 894 attached , NULL, 8) = 0 [pid 893] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 894] set_robust_list(0x55555618f760, 24) = 0 [pid 894] rt_sigprocmask(SIG_SETMASK, [] [pid 893] <... prctl resumed>) = 0 [pid 893] setpgid(0, 0) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 896 [pid 894] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 894] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 894] <... prctl resumed>) = 0 [pid 894] setpgid(0, 0) = 0 [pid 894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 893] write(3, "1000", 4) = 4 [pid 893] close(3 [pid 894] <... openat resumed>) = 3 [pid 893] <... close resumed>) = 0 executing program [pid 893] write(1, "executing program\n", 18) = 18 [pid 893] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] write(3, "1000", 4) = 4 [pid 893] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 894] close(3 [pid 893] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 894] <... close resumed>) = 0 [pid 893] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 893] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 894] write(1, "executing program\n", 18 [pid 893] <... mmap resumed>) = 0x7f5cd2d00000 executing program [pid 894] <... write resumed>) = 18 [pid 894] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 894] <... futex resumed>) = 0 [pid 893] <... mprotect resumed>) = 0 [pid 894] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 894] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 893] rt_sigprocmask(SIG_BLOCK, ~[] [pid 894] <... mmap resumed>) = 0x7f5cd2d00000 [pid 894] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 893] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 893] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 894] rt_sigprocmask(SIG_BLOCK, ~[] [pid 893] <... clone3 resumed> => {parent_tid=[897]}, 88) = 897 [pid 893] rt_sigprocmask(SIG_SETMASK, [] [pid 894] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 893] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 894] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 893] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 893] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 894] <... clone3 resumed> => {parent_tid=[898]}, 88) = 898 [pid 894] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 894] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 891] munmap(0x7f5cca900000, 138412032) = 0 [pid 891] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 891] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 891] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 898 attached [pid 898] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 898] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 898] memfd_create("syzkaller", 0) = 3 [pid 898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 895 attached [pid 895] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 895] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 891] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 891] close(4) = 0 [pid 891] close(3 [pid 895] memfd_create("syzkaller", 0 [pid 891] <... close resumed>) = 0 [pid 891] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 890] <... futex resumed>) = 0 [pid 891] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 890] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 890] <... futex resumed>) = 0 [pid 891] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 891] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 891] truncate("./file1", 36262 [pid 890] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 890] <... futex resumed>) = 0 [pid 891] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 891] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 891] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 890] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 891] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 890] <... futex resumed>) = 0 [pid 891] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 890] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 896 attached [pid 895] <... memfd_create resumed>) = 3 [pid 890] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ci2-android-6-1/strace-static-x86_64: Process 897 attached [pid 897] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 897] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 897] memfd_create("syzkaller", 0) = 3 [pid 897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 897] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 890] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = 1 [pid 891] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 891] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 891] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 890] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 890] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 895] <... mmap resumed>) = 0x7f5cca900000 [pid 890] exit_group(0 [pid 891] <... futex resumed>) = ? [pid 890] <... exit_group resumed>) = ? [pid 891] +++ exited with 0 +++ [pid 898] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 890] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=890, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 898] <... write resumed>) = 1048576 [pid 896] set_robust_list(0x55555618f760, 24) = 0 [pid 896] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 896] setpgid(0, 0) = 0 [pid 896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 898] munmap(0x7f5cca900000, 138412032 [pid 896] write(3, "1000", 4 [pid 898] <... munmap resumed>) = 0 [pid 896] <... write resumed>) = 4 [pid 898] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 898] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 898] ioctl(4, LOOP_CLR_FD) = 0 [pid 897] <... write resumed>) = 1048576 [pid 896] close(3 [pid 897] munmap(0x7f5cca900000, 138412032) = 0 [pid 896] <... close resumed>) = 0 [pid 897] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 897] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 897] ioctl(4, LOOP_CLR_FD) = 0 [pid 896] write(1, "executing program\n", 18 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 896] <... write resumed>) = 18 [pid 895] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 899 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 896] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 896] <... futex resumed>) = 0 [pid 898] ioctl(4, LOOP_SET_FD, 3 [pid 896] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 896] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 898] close(4) = 0 [pid 898] close(3 [pid 896] <... mmap resumed>) = 0x7f5cd2d00000 [pid 896] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 897] ioctl(4, LOOP_SET_FD, 3 [pid 896] rt_sigprocmask(SIG_BLOCK, ~[] [pid 897] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] close(4) = 0 [pid 896] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 896] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 897] close(3 [pid 896] <... clone3 resumed> => {parent_tid=[900]}, 88) = 900 [pid 898] <... close resumed>) = 0 [pid 895] <... write resumed>) = 1048576 [pid 896] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 899 attached [pid 896] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] set_robust_list(0x55555618f760, 24 [pid 895] munmap(0x7f5cca900000, 138412032 [pid 896] <... futex resumed>) = 0 [pid 899] <... set_robust_list resumed>) = 0 [pid 896] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 899] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 899] setpgid(0, 0) = 0 [pid 899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 895] <... munmap resumed>) = 0 [pid 898] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... futex resumed>) = 1 [pid 898] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 898] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... futex resumed>) = 1 [pid 898] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 898] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 899] write(3, "1000", 4 [pid 895] openat(AT_FDCWD, "/dev/loop0", O_RDWRci2-android-6-1/strace-static-x86_64: Process 900 attached [pid 898] <... futex resumed>) = 1 [pid 898] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 898] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... futex resumed>) = 1 [pid 898] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 898] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 894] exit_group(0) = ? [pid 899] <... write resumed>) = 4 [pid 895] <... openat resumed>) = 4 [pid 898] <... futex resumed>) = ? [pid 899] close(3 [pid 895] ioctl(4, LOOP_SET_FD, 3 [pid 897] <... close resumed>) = 0 [pid 899] <... close resumed>) = 0 [pid 895] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 0 [pid 893] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 893] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 897] <... futex resumed>) = 1 [pid 897] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 897] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 0 [pid 893] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 893] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 897] <... futex resumed>) = 1 [pid 899] write(1, "executing program\n", 18 [pid 895] ioctl(4, LOOP_CLR_FD [pid 897] truncate("./file1", 36262) = -1 EISDIR (Is a directory) executing program [pid 897] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] <... write resumed>) = 18 [pid 899] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 0 [pid 893] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 893] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 899] <... futex resumed>) = 0 [pid 900] set_robust_list(0x7f5cd2d209a0, 24 [pid 895] <... ioctl resumed>) = 0 [pid 897] <... futex resumed>) = 1 [pid 897] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 897] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 0 [pid 893] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 893] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 897] <... futex resumed>) = 1 [pid 897] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 897] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 0 [pid 893] exit_group(0) = ? [pid 899] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 899] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 897] <... futex resumed>) = ? [pid 900] <... set_robust_list resumed>) = 0 [pid 899] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 897] +++ exited with 0 +++ [pid 893] +++ exited with 0 +++ [pid 899] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=893, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 899] <... mmap resumed>) = 0x7f5cd2d00000 [pid 898] +++ exited with 0 +++ [pid 894] +++ exited with 0 +++ [pid 899] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 900] rt_sigprocmask(SIG_SETMASK, [] [pid 899] <... mprotect resumed>) = 0 [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=894, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 899] rt_sigprocmask(SIG_BLOCK, ~[] [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 899] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 895] ioctl(4, LOOP_SET_FD, 3 [pid 899] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 895] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 895] close(4 [pid 899] <... clone3 resumed> => {parent_tid=[901]}, 88) = 901 [pid 895] <... close resumed>) = 0 [pid 899] rt_sigprocmask(SIG_SETMASK, [] [pid 895] close(3 [pid 899] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 895] <... close resumed>) = 0 [pid 899] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 899] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 900] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 900] memfd_create("syzkaller", 0) = 3 [pid 900] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 895] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 892] <... futex resumed>) = 0 [pid 892] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 892] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 895] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 892] <... futex resumed>) = 0 [pid 892] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 892] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 895] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 892] <... futex resumed>) = 0 [pid 892] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 895] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 892] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 895] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 892] <... futex resumed>) = 0 [pid 895] read(-1 [pid 892] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 892] <... futex resumed>) = 0 [pid 892] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FDci2-android-6-1/strace-static-x86_64: Process 901 attached [pid 895] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... ioctl resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 901] set_robust_list(0x7f5cd2d209a0, 24 [pid 895] <... futex resumed>) = 1 [pid 892] <... futex resumed>) = 0 [pid 311] close(3 [pid 310] <... openat resumed>) = 3 [pid 901] <... set_robust_list resumed>) = 0 [pid 895] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 892] exit_group(0 [pid 311] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 901] rt_sigprocmask(SIG_SETMASK, [] [pid 895] <... futex resumed>) = ? [pid 892] <... exit_group resumed>) = ? [pid 311] rt_sigprocmask(SIG_BLOCK, ~[] [pid 310] <... ioctl resumed>) = 0 [pid 895] +++ exited with 0 +++ [pid 311] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 310] close(3 [pid 901] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 892] +++ exited with 0 +++ [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... close resumed>) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 901] memfd_create("syzkaller", 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=892, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] <... clone resumed>, child_tidptr=0x55555618f750) = 902 [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 901] <... memfd_create resumed>) = 3 [pid 311] rt_sigprocmask(SIG_SETMASK, [] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 311] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 901] <... mmap resumed>) = 0x7f5cca900000 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 903 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 900] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 901] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FDci2-android-6-1/strace-static-x86_64: Process 902 attached ) = 0 [pid 902] set_robust_list(0x55555618f760, 24 [pid 307] close(3 [pid 902] <... set_robust_list resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 902] rt_sigprocmask(SIG_SETMASK, [] [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 902] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 904 [pid 902] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 902] <... prctl resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 902] setpgid(0, 0) = 0 [pid 900] <... write resumed>) = 1048576 [pid 900] munmap(0x7f5cca900000, 138412032) = 0 [pid 900] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 900] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 900] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 904 attached [pid 904] set_robust_list(0x55555618f760, 24) = 0 [pid 904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 900] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 900] close(4) = 0 [pid 900] close(3) = 0 [pid 904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 904] setpgid(0, 0) = 0 [pid 904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 904] write(3, "1000", 4) = 4 [pid 904] close(3) = 0 [pid 904] write(1, "executing program\n", 18) = 18 executing program [pid 904] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 904] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 904] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 902] write(3, "1000", 4 [pid 904] <... mmap resumed>) = 0x7f5cd2d00000 [pid 904] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 904] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 904] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 901] <... write resumed>) = 1048576 [pid 902] <... write resumed>) = 4 [pid 904] <... clone3 resumed> => {parent_tid=[905]}, 88) = 905 [pid 904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 904] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 904] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 902] close(3ci2-android-6-1/strace-static-x86_64: Process 903 attached [pid 901] munmap(0x7f5cca900000, 138412032 [pid 902] <... close resumed>) = 0 [pid 903] set_robust_list(0x55555618f760, 24 [pid 900] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] <... set_robust_list resumed>) = 0 [pid 902] write(1, "executing program\n", 18 [pid 901] <... munmap resumed>) = 0 executing program [pid 903] rt_sigprocmask(SIG_SETMASK, [] [pid 902] <... write resumed>) = 18 [pid 901] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 903] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 902] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... openat resumed>) = 4 [pid 902] <... futex resumed>) = 0 [pid 903] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 902] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 901] ioctl(4, LOOP_SET_FD, 3 [pid 903] <... prctl resumed>) = 0 [pid 902] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 903] setpgid(0, 0 [pid 902] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 901] ioctl(4, LOOP_CLR_FD [pid 903] <... setpgid resumed>) = 0 [pid 902] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 901] <... ioctl resumed>) = 0 [pid 903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 896] <... futex resumed>) = 0 [pid 903] <... openat resumed>) = 3 [pid 896] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] write(3, "1000", 4 [pid 902] <... mmap resumed>) = 0x7f5cd2d00000 [pid 896] <... futex resumed>) = 0 [pid 903] <... write resumed>) = 4 [pid 902] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 896] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] close(3 [pid 902] <... mprotect resumed>) = 0 [pid 903] <... close resumed>) = 0 [pid 900] <... futex resumed>) = 1 [pid 902] rt_sigprocmask(SIG_BLOCK, ~[] [pid 903] write(1, "executing program\n", 18 [pid 902] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 903] <... write resumed>) = 18 [pid 902] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 903] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 903] <... futex resumed>) = 0 [pid 903] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 902] <... clone3 resumed> => {parent_tid=[906]}, 88) = 906 [pid 903] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 902] rt_sigprocmask(SIG_SETMASK, [] [pid 900] <... openat resumed>) = -1 EISDIR (Is a directory) executing program [pid 900] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 896] <... futex resumed>) = 0 [pid 896] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 896] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 900] <... futex resumed>) = 1 [pid 900] truncate("./file1", 36262 [pid 902] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 903] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 900] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 903] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 902] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] ioctl(4, LOOP_SET_FD, 3 [pid 903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 902] <... futex resumed>) = 0 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 903] <... mmap resumed>) = 0x7f5cd2d00000 [pid 902] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 903] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 901] close(4 [pid 903] <... mprotect resumed>) = 0 [pid 900] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... close resumed>) = 0 [pid 903] rt_sigprocmask(SIG_BLOCK, ~[] [pid 901] close(3 [pid 903] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 896] <... futex resumed>) = 0 [pid 896] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 896] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 900] <... futex resumed>) = 1 [pid 900] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 900] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 896] <... futex resumed>) = 0 [pid 900] read(-1 [pid 896] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 896] <... futex resumed>) = 0 [pid 900] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 896] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 900] <... futex resumed>) = 0 [pid 896] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 900] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 896] exit_group(0 [pid 900] <... futex resumed>) = ? [pid 896] <... exit_group resumed>) = ? [pid 901] <... close resumed>) = 0 [pid 900] +++ exited with 0 +++ [pid 896] +++ exited with 0 +++ [pid 903] <... clone3 resumed> => {parent_tid=[907]}, 88) = 907 [pid 901] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] rt_sigprocmask(SIG_SETMASK, [] [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=896, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 903] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 901] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 903] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 903] <... futex resumed>) = 0 [pid 901] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 899] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] ioctl(3, LOOP_CLR_FD [pid 903] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 901] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 308] <... ioctl resumed>) = 0 [pid 901] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] close(3 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 901] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[]ci2-android-6-1/strace-static-x86_64: Process 907 attached ci2-android-6-1/strace-static-x86_64: Process 906 attached [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 907] set_robust_list(0x7f5cd2d209a0, 24 [pid 906] set_robust_list(0x7f5cd2d209a0, 24 [pid 901] truncate("./file1", 36262 [pid 899] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 907] <... set_robust_list resumed>) = 0 [pid 906] <... set_robust_list resumed>) = 0 [pid 901] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 907] rt_sigprocmask(SIG_SETMASK, [] [pid 906] rt_sigprocmask(SIG_SETMASK, [] [pid 901] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 908 [pid 907] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 906] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 907] memfd_create("syzkaller", 0 [pid 906] memfd_create("syzkaller", 0 [pid 901] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 907] <... memfd_create resumed>) = 3 [pid 906] <... memfd_create resumed>) = 3 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 906] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 901] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 899] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] <... mmap resumed>) = 0x7f5cca900000 [pid 906] <... mmap resumed>) = 0x7f5cca900000 [pid 901] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 901] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 899] <... futex resumed>) = 0 [pid 901] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 901] read(-1 [pid 899] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 901] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 901] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 899] <... futex resumed>) = 0 [pid 901] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] exit_group(0 [pid 901] <... futex resumed>) = ? [pid 899] <... exit_group resumed>) = ? [pid 901] +++ exited with 0 +++ [pid 899] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=899, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 905 attached [pid 905] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 905] memfd_create("syzkaller", 0) = 3 [pid 905] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 907] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 906] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 905] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[]ci2-android-6-1/strace-static-x86_64: Process 908 attached , [], 8) = 0 [pid 908] set_robust_list(0x55555618f760, 24 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 909 [pid 908] <... set_robust_list resumed>) = 0 [pid 908] rt_sigprocmask(SIG_SETMASK, [] [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 908] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 907] <... write resumed>) = 1048576 [pid 908] prctl(PR_SET_PDEATHSIG, SIGKILLci2-android-6-1/strace-static-x86_64: Process 909 attached [pid 909] set_robust_list(0x55555618f760, 24) = 0 [pid 909] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 909] setpgid(0, 0) = 0 [pid 909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 906] <... write resumed>) = 1048576 [pid 908] <... prctl resumed>) = 0 [pid 905] <... write resumed>) = 1048576 [pid 909] write(3, "1000", 4) = 4 [pid 909] close(3) = 0 [pid 909] write(1, "executing program\n", 18) = 18 executing program [pid 909] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 909] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 909] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 909] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 909] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 905] munmap(0x7f5cca900000, 138412032 [pid 909] <... mprotect resumed>) = 0 [pid 905] <... munmap resumed>) = 0 [pid 909] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 909] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 905] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 909] <... clone3 resumed> => {parent_tid=[910]}, 88) = 910 [pid 909] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 909] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] ioctl(4, LOOP_SET_FD, 3 [pid 909] <... futex resumed>) = 0 [pid 909] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 905] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 905] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 910 attached [pid 908] setpgid(0, 0 [pid 910] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 910] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 910] memfd_create("syzkaller", 0 [pid 905] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 905] close(4) = 0 [pid 905] close(3) = 0 [pid 905] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... futex resumed>) = 0 [pid 904] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 904] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 905] <... futex resumed>) = 1 [pid 905] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 905] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... futex resumed>) = 0 [pid 904] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 904] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 905] <... futex resumed>) = 1 [pid 905] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 905] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... futex resumed>) = 0 [pid 904] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 904] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 908] <... setpgid resumed>) = 0 [pid 905] <... futex resumed>) = 1 [pid 905] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 905] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... futex resumed>) = 0 [pid 908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 904] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 904] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 908] <... openat resumed>) = 3 [pid 905] <... futex resumed>) = 1 [pid 905] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 905] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... futex resumed>) = 0 [pid 904] exit_group(0) = ? [pid 905] <... futex resumed>) = ? [pid 908] write(3, "1000", 4 [pid 906] munmap(0x7f5cca900000, 138412032 [pid 905] +++ exited with 0 +++ [pid 907] munmap(0x7f5cca900000, 138412032 [pid 904] +++ exited with 0 +++ [pid 908] <... write resumed>) = 4 [pid 908] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=904, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 908] <... close resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 908] write(1, "executing program\n", 18) = 18 [pid 908] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... munmap resumed>) = 0 [pid 908] <... futex resumed>) = 0 executing program [pid 908] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 907] <... munmap resumed>) = 0 [pid 906] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 908] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 907] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 906] <... openat resumed>) = 4 [pid 908] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 906] ioctl(4, LOOP_SET_FD, 3 [pid 908] <... mmap resumed>) = 0x7f5cd2d00000 [pid 908] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 907] <... openat resumed>) = 4 [pid 906] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 908] <... mprotect resumed>) = 0 [pid 907] ioctl(4, LOOP_SET_FD, 3 [pid 906] ioctl(4, LOOP_CLR_FD [pid 908] rt_sigprocmask(SIG_BLOCK, ~[] [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 906] <... ioctl resumed>) = 0 [pid 908] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 907] ioctl(4, LOOP_CLR_FD) = 0 [pid 908] <... clone3 resumed> => {parent_tid=[911]}, 88) = 911 [pid 908] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 908] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 908] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 910] <... memfd_create resumed>) = 3 [pid 910] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 907] ioctl(4, LOOP_SET_FD, 3 [pid 906] ioctl(4, LOOP_SET_FD, 3 [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 906] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 907] close(4 [pid 906] close(4 [pid 907] <... close resumed>) = 0 [pid 906] <... close resumed>) = 0 [pid 907] close(3 [pid 906] close(3 [pid 910] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 907] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 911 attached [pid 911] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 911] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 911] memfd_create("syzkaller", 0) = 3 [pid 911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 907] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 907] <... futex resumed>) = 1 [pid 906] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] <... futex resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 906] <... futex resumed>) = 1 [pid 903] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... futex resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 907] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 906] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] <... futex resumed>) = 0 [pid 902] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] close(3 [pid 906] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... futex resumed>) = 0 [pid 907] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 906] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 902] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... close resumed>) = 0 [pid 907] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 907] <... futex resumed>) = 1 [pid 906] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] <... futex resumed>) = 0 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 907] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] <... futex resumed>) = 1 [pid 903] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... futex resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] <... futex resumed>) = 0 [pid 902] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] truncate("./file1", 36262 [pid 906] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... futex resumed>) = 0 [pid 907] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 906] truncate("./file1", 36262 [pid 902] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 912 [pid 907] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 907] <... futex resumed>) = 1 [pid 906] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] <... futex resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 903] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 907] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 906] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 902] <... futex resumed>) = 0 [pid 907] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 906] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 902] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = 0 [pid 906] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 903] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] read(-1 [pid 906] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 903] <... futex resumed>) = 0 [pid 907] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 906] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 902] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = 0 [pid 906] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] exit_group(0 [pid 902] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... exit_group resumed>) = ? [pid 902] <... futex resumed>) = 0 [pid 907] +++ exited with 0 +++ [pid 906] read(-1 [pid 903] +++ exited with 0 +++ [pid 902] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 906] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=903, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 906] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 913 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 910] <... write resumed>) = 1048576 [pid 906] <... futex resumed>) = 1 [pid 902] <... futex resumed>) = 0 [pid 906] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 902] exit_group(0 [pid 906] <... futex resumed>) = ? [pid 902] <... exit_group resumed>) = ? [pid 906] +++ exited with 0 +++ ci2-android-6-1/strace-static-x86_64: Process 912 attached [pid 902] +++ exited with 0 +++ ci2-android-6-1/strace-static-x86_64: Process 913 attached [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=902, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 913] set_robust_list(0x55555618f760, 24) = 0 [pid 912] set_robust_list(0x55555618f760, 24) = 0 [pid 912] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 912] setpgid(0, 0) = 0 [pid 912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 912] write(3, "1000", 4) = 4 [pid 912] close(3) = 0 [pid 912] write(1, "executing program\n", 18) = 18 executing program [pid 912] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 912] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 912] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 913] rt_sigprocmask(SIG_SETMASK, [] [pid 911] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 912] <... mmap resumed>) = 0x7f5cd2d00000 [pid 912] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 912] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 912] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 911] <... write resumed>) = 1048576 [pid 912] <... clone3 resumed> => {parent_tid=[914]}, 88) = 914 [pid 912] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 912] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 912] <... futex resumed>) = 0 [pid 913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 915 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 912] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 910] munmap(0x7f5cca900000, 138412032) = 0 [pid 910] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 910] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 910] ioctl(4, LOOP_CLR_FD) = 0 [pid 911] munmap(0x7f5cca900000, 138412032) = 0 [pid 911] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 911] ioctl(4, LOOP_SET_FD, 3 [pid 910] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 910] close(4) = 0 [pid 910] close(3 [pid 913] setpgid(0, 0 [pid 910] <... close resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 914 attached [pid 913] <... setpgid resumed>) = 0 [pid 914] set_robust_list(0x7f5cd2d209a0, 24 [pid 913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 914] <... set_robust_list resumed>) = 0 [pid 913] <... openat resumed>) = 3 [pid 913] write(3, "1000", 4 [pid 914] rt_sigprocmask(SIG_SETMASK, [] [pid 913] <... write resumed>) = 4 [pid 914] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 913] close(3) = 0 [pid 914] memfd_create("syzkaller", 0 executing program [pid 913] write(1, "executing program\n", 18 [pid 914] <... memfd_create resumed>) = 3 [pid 913] <... write resumed>) = 18 [pid 914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 913] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... mmap resumed>) = 0x7f5cca900000 [pid 913] <... futex resumed>) = 0 [pid 913] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 913] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 913] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 913] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 913] rt_sigprocmask(SIG_BLOCK, ~[] [pid 910] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 913] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[916]}, 88) = 916 [pid 909] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 915 attached [pid 913] rt_sigprocmask(SIG_SETMASK, [] [pid 909] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] set_robust_list(0x55555618f760, 24 [pid 913] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 909] <... futex resumed>) = 0 [pid 915] <... set_robust_list resumed>) = 0 [pid 913] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 913] <... futex resumed>) = 0 [pid 915] rt_sigprocmask(SIG_SETMASK, [] [pid 913] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 915] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 910] <... futex resumed>) = 1 [pid 910] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 910] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = 0 [pid 909] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 909] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] <... futex resumed>) = 1 [pid 910] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 910] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = 0 [pid 909] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 909] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] <... futex resumed>) = 1 [pid 914] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 915] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 910] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 910] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = 0 [pid 909] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 909] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] <... futex resumed>) = 1 [pid 910] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 910] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = 0 [pid 909] exit_group(0) = ? [pid 910] <... futex resumed>) = ? [pid 911] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 911] ioctl(4, LOOP_CLR_FD) = 0 [pid 910] +++ exited with 0 +++ [pid 909] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=909, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 916 attached [pid 916] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 916] rt_sigprocmask(SIG_SETMASK, [] [pid 911] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 911] close(4) = 0 [pid 911] close(3) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 915] <... prctl resumed>) = 0 [pid 915] setpgid(0, 0) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 911] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 911] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 916] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 908] <... futex resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 908] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 908] <... futex resumed>) = 1 [pid 309] close(3 [pid 915] write(3, "1000", 4 [pid 908] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... close resumed>) = 0 [pid 915] <... write resumed>) = 4 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 915] close(3 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 915] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 911] <... futex resumed>) = 0 [pid 911] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 915] write(1, "executing program\n", 18) = 18 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 917 executing program [pid 915] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 915] <... futex resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 915] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 911] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 911] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 908] <... futex resumed>) = 0 [pid 915] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 908] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] memfd_create("syzkaller", 0 [pid 915] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 911] truncate("./file1", 36262 [pid 908] <... futex resumed>) = 0 [pid 916] <... memfd_create resumed>) = 3 [pid 915] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 911] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 908] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 915] <... mmap resumed>) = 0x7f5cd2d00000 [pid 911] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] <... mmap resumed>) = 0x7f5cca900000 [pid 915] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 911] <... futex resumed>) = 1 [pid 908] <... futex resumed>) = 0 [pid 911] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 916] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 917 attached [pid 917] set_robust_list(0x55555618f760, 24) = 0 [pid 917] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 917] setpgid(0, 0) = 0 [pid 917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 908] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] <... mprotect resumed>) = 0 [pid 908] <... futex resumed>) = 1 [pid 911] <... futex resumed>) = 0 [pid 908] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 915] rt_sigprocmask(SIG_BLOCK, ~[] [pid 911] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 911] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 911] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] <... openat resumed>) = 3 [pid 917] write(3, "1000", 4) = 4 [pid 917] close(3) = 0 [pid 917] write(1, "executing program\n", 18 [pid 915] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 908] <... futex resumed>) = 0 [pid 908] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 908] <... futex resumed>) = 1 [pid 908] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 911] <... futex resumed>) = 0 [pid 911] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 911] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 908] <... futex resumed>) = 0 [pid 911] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] exit_group(0 [pid 911] <... futex resumed>) = ? [pid 908] <... exit_group resumed>) = ? [pid 915] <... clone3 resumed> => {parent_tid=[918]}, 88) = 918 [pid 911] +++ exited with 0 +++ [pid 908] +++ exited with 0 +++ [pid 915] rt_sigprocmask(SIG_SETMASK, [] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=908, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 915] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 915] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 917] <... write resumed>) = 18 executing program [pid 308] rt_sigprocmask(SIG_BLOCK, ~[] [pid 917] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 917] <... futex resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 917] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 308] <... clone resumed>, child_tidptr=0x55555618f750) = 919 [pid 917] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 917] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 917] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 917] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 917] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 917] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[920]}, 88) = 920 [pid 917] rt_sigprocmask(SIG_SETMASK, [] [pid 916] <... write resumed>) = 1048576 [pid 917] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 917] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 917] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 915] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 919 attached [pid 919] set_robust_list(0x55555618f760, 24) = 0 [pid 919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 919] setpgid(0, 0) = 0 [pid 919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 919] write(3, "1000", 4) = 4 [pid 919] close(3) = 0 [pid 919] write(1, "executing program\n", 18) = 18 executing program [pid 919] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 920 attached [pid 920] set_robust_list(0x7f5cd2d209a0, 24 [pid 919] <... futex resumed>) = 0 [pid 919] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 920] <... set_robust_list resumed>) = 0 [pid 919] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 920] rt_sigprocmask(SIG_SETMASK, [] [pid 919] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 920] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 919] <... mmap resumed>) = 0x7f5cd2d00000 [pid 920] memfd_create("syzkaller", 0 [pid 919] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 920] <... memfd_create resumed>) = 3 [pid 919] rt_sigprocmask(SIG_BLOCK, ~[] [pid 920] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 914] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 918 attached [pid 919] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 919] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[921]}, 88) = 921 [pid 919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 919] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 916] munmap(0x7f5cca900000, 138412032) = 0 [pid 918] set_robust_list(0x7f5cd2d209a0, 24 [pid 914] munmap(0x7f5cca900000, 138412032 [pid 918] <... set_robust_list resumed>) = 0 [pid 918] rt_sigprocmask(SIG_SETMASK, [] [pid 916] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 916] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 916] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 921 attached [pid 918] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 914] <... munmap resumed>) = 0 [pid 918] memfd_create("syzkaller", 0) = 3 [pid 914] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 918] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 914] <... openat resumed>) = 4 [pid 921] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 916] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 916] close(4) = 0 [pid 916] close(3) = 0 [pid 914] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 914] ioctl(4, LOOP_CLR_FD) = 0 [pid 921] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 921] memfd_create("syzkaller", 0) = 3 [pid 921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 916] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... mmap resumed>) = 0x7f5cca900000 [pid 916] <... futex resumed>) = 1 [pid 913] <... futex resumed>) = 0 [pid 913] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 913] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 918] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 916] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 913] <... futex resumed>) = 0 [pid 914] ioctl(4, LOOP_SET_FD, 3 [pid 913] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] <... futex resumed>) = 0 [pid 916] truncate("./file1", 36262 [pid 914] close(4 [pid 913] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 914] <... close resumed>) = 0 [pid 916] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 913] <... futex resumed>) = 0 [pid 914] close(3 [pid 913] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 913] <... futex resumed>) = 0 [pid 916] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 913] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 913] <... futex resumed>) = 0 [pid 916] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 913] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 913] <... futex resumed>) = 0 [pid 916] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 913] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 916] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... write resumed>) = 1048576 [pid 916] <... futex resumed>) = 1 [pid 914] <... close resumed>) = 0 [pid 913] <... futex resumed>) = 0 [pid 916] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 913] exit_group(0) = ? [pid 916] <... futex resumed>) = ? [pid 914] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] +++ exited with 0 +++ [pid 914] <... futex resumed>) = 1 [pid 913] +++ exited with 0 +++ [pid 912] <... futex resumed>) = 0 [pid 912] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=913, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 912] <... futex resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 912] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 921] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 920] munmap(0x7f5cca900000, 138412032 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 922 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 914] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 920] <... munmap resumed>) = 0 [pid 920] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 920] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 920] ioctl(4, LOOP_CLR_FD) = 0 [pid 918] <... write resumed>) = 1048576 [pid 914] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 920] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 920] close(4) = 0 [pid 920] close(3 [pid 914] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] truncate("./file1", 36262 [pid 912] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 914] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 912] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000ci2-android-6-1/strace-static-x86_64: Process 922 attached [pid 922] set_robust_list(0x55555618f760, 24) = 0 [pid 922] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 922] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 920] <... close resumed>) = 0 [pid 920] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... prctl resumed>) = 0 [pid 917] <... futex resumed>) = 0 [pid 917] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 917] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 920] <... futex resumed>) = 1 [pid 922] setpgid(0, 0 [pid 920] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 922] <... setpgid resumed>) = 0 [pid 920] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 920] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] <... futex resumed>) = 0 [pid 917] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 917] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 912] <... futex resumed>) = 0 [pid 914] <... futex resumed>) = 1 [pid 912] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 912] <... futex resumed>) = 0 [pid 914] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 912] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 1 [pid 914] <... futex resumed>) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 [pid 914] read(-1 [pid 912] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 914] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 918] munmap(0x7f5cca900000, 138412032 [pid 914] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] exit_group(0 [pid 914] <... futex resumed>) = ? [pid 912] <... exit_group resumed>) = ? [pid 920] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 920] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] +++ exited with 0 +++ [pid 912] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 918] <... munmap resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 917] <... futex resumed>) = 0 [pid 917] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 917] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 920] <... futex resumed>) = 1 [pid 922] <... openat resumed>) = 3 [pid 920] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 920] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] <... futex resumed>) = 0 [pid 917] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 917] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 920] <... futex resumed>) = 1 [pid 920] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 920] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] <... futex resumed>) = 0 [pid 917] exit_group(0) = ? [pid 920] <... futex resumed>) = ? [pid 922] write(3, "1000", 4) = 4 [pid 920] +++ exited with 0 +++ [pid 918] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 917] +++ exited with 0 +++ [pid 922] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=917, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 918] <... openat resumed>) = 4 [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 922] <... close resumed>) = 0 [pid 918] ioctl(4, LOOP_SET_FD, 3 [pid 922] write(1, "executing program\n", 18) = 18 [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... restart_syscall resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 executing program [pid 922] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] ioctl(4, LOOP_CLR_FD [pid 922] <... futex resumed>) = 0 [pid 918] <... ioctl resumed>) = 0 [pid 922] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 922] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 921] <... write resumed>) = 1048576 [pid 309] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 922] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 921] munmap(0x7f5cca900000, 138412032 [pid 309] ioctl(3, LOOP_CLR_FD [pid 922] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 921] <... munmap resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 921] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 922] <... mmap resumed>) = 0x7f5cd2d00000 [pid 921] <... openat resumed>) = 4 [pid 309] <... close resumed>) = 0 [pid 307] close(3 [pid 918] ioctl(4, LOOP_SET_FD, 3 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[] [pid 307] <... close resumed>) = 0 [pid 309] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 922] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 921] ioctl(4, LOOP_SET_FD, 3 [pid 922] <... mprotect resumed>) = 0 [pid 921] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 918] close(4 [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 918] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 923 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 922] rt_sigprocmask(SIG_BLOCK, ~[] [pid 921] ioctl(4, LOOP_CLR_FD [pid 309] rt_sigprocmask(SIG_SETMASK, [] [pid 922] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 921] <... ioctl resumed>) = 0 [pid 918] close(3 [pid 309] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 922] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 924 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 922] <... clone3 resumed> => {parent_tid=[925]}, 88) = 925 [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 922] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 922] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 922] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 921] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 921] close(4) = 0 [pid 921] close(3 [pid 918] <... close resumed>) = 0 [pid 921] <... close resumed>) = 0 [pid 921] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 921] <... futex resumed>) = 1 [pid 921] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 921] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... futex resumed>) = 0 [pid 921] <... futex resumed>) = 1 [pid 919] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] truncate("./file1", 36262 [pid 919] <... futex resumed>) = 0 [pid 921] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 919] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 918] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 919] <... futex resumed>) = 0 [pid 921] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 919] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 919] <... futex resumed>) = 0 ci2-android-6-1/strace-static-x86_64: Process 923 attached [pid 921] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 918] <... futex resumed>) = 1 [pid 915] <... futex resumed>) = 0 [pid 923] set_robust_list(0x55555618f760, 24 [pid 921] <... futex resumed>) = 0 [pid 919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 915] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] <... set_robust_list resumed>) = 0 [pid 921] read(-1 [pid 919] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] <... futex resumed>) = 0 [pid 923] rt_sigprocmask(SIG_SETMASK, [] [pid 921] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 919] <... futex resumed>) = 0 [pid 915] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 921] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 918] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 923] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 921] <... futex resumed>) = 0 [pid 919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 923] <... prctl resumed>) = 0 [pid 921] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 919] exit_group(0 [pid 918] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 923] setpgid(0, 0 [pid 921] <... futex resumed>) = ? [pid 919] <... exit_group resumed>) = ? [pid 923] <... setpgid resumed>) = 0 [pid 921] +++ exited with 0 +++ [pid 919] +++ exited with 0 +++ [pid 923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=919, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ci2-android-6-1/strace-static-x86_64: Process 925 attached [pid 923] <... openat resumed>) = 3 [pid 308] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 925] set_robust_list(0x7f5cd2d209a0, 24 [pid 923] write(3, "1000", 4 [pid 925] <... set_robust_list resumed>) = 0 [pid 923] <... write resumed>) = 4 [pid 925] rt_sigprocmask(SIG_SETMASK, [] [pid 923] close(3 [pid 925] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 923] <... close resumed>) = 0 [pid 925] memfd_create("syzkaller", 0 executing program [pid 923] write(1, "executing program\n", 18 [pid 925] <... memfd_create resumed>) = 3 [pid 923] <... write resumed>) = 18 [pid 925] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 923] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... mmap resumed>) = 0x7f5cca900000 [pid 923] <... futex resumed>) = 0 [pid 925] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 923] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 918] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 923] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 923] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 923] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 923] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 923] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[926]}, 88) = 926 [pid 923] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 923] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 923] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 927 [pid 918] <... futex resumed>) = 1 [pid 915] <... futex resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [] [pid 918] truncate("./file1", 36262 [pid 915] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 915] <... futex resumed>) = 0 [pid 915] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] <... write resumed>) = 1048576 ci2-android-6-1/strace-static-x86_64: Process 926 attached [pid 926] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 926] memfd_create("syzkaller", 0) = 3 [pid 926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 918] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 926] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 925] munmap(0x7f5cca900000, 138412032) = 0 ci2-android-6-1/strace-static-x86_64: Process 927 attached [pid 927] set_robust_list(0x55555618f760, 24 [pid 918] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 927] <... set_robust_list resumed>) = 0 [pid 927] rt_sigprocmask(SIG_SETMASK, [] [pid 925] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 927] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 927] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 925] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 925] ioctl(4, LOOP_CLR_FD) = 0 [pid 927] <... prctl resumed>) = 0 [pid 927] setpgid(0, 0) = 0 [pid 927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 927] write(3, "1000", 4) = 4 [pid 927] close(3) = 0 [pid 925] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 925] close(4) = 0 [pid 918] <... futex resumed>) = 1 [pid 915] <... futex resumed>) = 0 [pid 915] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] close(3 [pid 927] write(1, "executing program\n", 18ci2-android-6-1/strace-static-x86_64: Process 924 attached [pid 918] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 924] set_robust_list(0x55555618f760, 24 [pid 918] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 924] <... set_robust_list resumed>) = 0 [pid 918] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 915] <... futex resumed>) = 0 [pid 924] rt_sigprocmask(SIG_SETMASK, [] [pid 915] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] read(-1 [pid 915] <... futex resumed>) = 0 [pid 924] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 918] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 915] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 918] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 924] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 918] <... futex resumed>) = 0 [pid 924] <... prctl resumed>) = 0 [pid 918] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 915] exit_group(0 [pid 924] setpgid(0, 0 [pid 918] <... futex resumed>) = ? [pid 915] <... exit_group resumed>) = ? [pid 927] <... write resumed>) = 18 [pid 927] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 927] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 924] <... setpgid resumed>) = 0 [pid 918] +++ exited with 0 +++ [pid 915] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=915, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 927] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 927] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 927] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 927] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 927] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[928]}, 88) = 928 [pid 927] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 927] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 927] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 929 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 924] <... openat resumed>) = 3 [pid 925] <... close resumed>) = 0 [pid 925] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... futex resumed>) = 0 [pid 922] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 922] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] write(3, "1000", 4 [pid 925] <... futex resumed>) = 1 [pid 925] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 925] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... futex resumed>) = 0 [pid 922] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 922] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] <... futex resumed>) = 1 [pid 924] <... write resumed>) = 4 [pid 924] close(3 [pid 925] truncate("./file1", 36262 [pid 924] <... close resumed>) = 0 [pid 925] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 924] write(1, "executing program\n", 18 [pid 925] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] <... write resumed>) = 18 [pid 922] <... futex resumed>) = 0 [pid 924] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] <... futex resumed>) = 0 [pid 922] <... futex resumed>) = 0 [pid 924] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390} [pid 922] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... rt_sigaction resumed>, NULL, 8) = 0 [pid 925] <... futex resumed>) = 1 executing program [pid 924] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 925] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 925] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 924] <... mmap resumed>) = 0x7f5cd2d00000 [pid 925] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... futex resumed>) = 0 [pid 922] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 922] <... futex resumed>) = 0 [pid 922] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... mprotect resumed>) = 0 [pid 925] <... futex resumed>) = 1 [pid 925] read(-1 [pid 924] rt_sigprocmask(SIG_BLOCK, ~[] [pid 925] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 924] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 925] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 922] <... futex resumed>) = 0 [pid 922] exit_group(0 [pid 925] <... futex resumed>) = ? [pid 924] <... clone3 resumed> => {parent_tid=[930]}, 88) = 930 [pid 922] <... exit_group resumed>) = ? [pid 925] +++ exited with 0 +++ [pid 924] rt_sigprocmask(SIG_SETMASK, [] [pid 922] +++ exited with 0 +++ [pid 924] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=922, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 924] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 924] <... futex resumed>) = 0 [pid 924] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 929 attached [pid 929] set_robust_list(0x55555618f760, 24) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[] [pid 929] rt_sigprocmask(SIG_SETMASK, [] [pid 310] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 929] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555618f750) = 931 [pid 929] setpgid(0, 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [] [pid 929] <... setpgid resumed>) = 0 [pid 310] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 929] write(3, "1000", 4) = 4 [pid 929] close(3) = 0 executing program [pid 929] write(1, "executing program\n", 18) = 18 [pid 926] <... write resumed>) = 1048576 [pid 929] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] munmap(0x7f5cca900000, 138412032 [pid 929] <... futex resumed>) = 0 [pid 926] <... munmap resumed>) = 0 [pid 929] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 926] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 929] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1] [pid 926] <... openat resumed>) = 4 [pid 929] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 926] ioctl(4, LOOP_SET_FD, 3 [pid 929] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 926] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 929] <... mmap resumed>) = 0x7f5cd2d00000 [pid 926] ioctl(4, LOOP_CLR_FD [pid 929] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 926] <... ioctl resumed>) = 0 [pid 929] <... mprotect resumed>) = 0 [pid 929] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 929] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[932]}, 88) = 932 [pid 929] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 929] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 926] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 926] close(4) = 0 [pid 926] close(3ci2-android-6-1/strace-static-x86_64: Process 928 attached ) = 0 ci2-android-6-1/strace-static-x86_64: Process 931 attached [pid 931] set_robust_list(0x55555618f760, 24) = 0 [pid 931] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 931] setpgid(0, 0) = 0 [pid 931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 931] write(3, "1000", 4) = 4 [pid 931] close(3) = 0 [pid 928] set_robust_list(0x7f5cd2d209a0, 24 [pid 931] write(1, "executing program\n", 18) = 18 [pid 931] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 931] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 931] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 931] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 926] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 926] <... futex resumed>) = 1 [pid 923] <... futex resumed>) = 0 [pid 931] <... mprotect resumed>) = 0 [pid 926] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 923] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] rt_sigprocmask(SIG_BLOCK, ~[] [pid 926] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 923] <... futex resumed>) = 0 [pid 931] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 926] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 931] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 926] <... futex resumed>) = 0 [pid 923] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ci2-android-6-1/strace-static-x86_64: Process 930 attached [pid 928] <... set_robust_list resumed>) = 0 [pid 926] truncate("./file1", 36262 [pid 923] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... clone3 resumed> => {parent_tid=[933]}, 88) = 933 [pid 930] set_robust_list(0x7f5cd2d209a0, 24 [pid 928] rt_sigprocmask(SIG_SETMASK, [] [pid 926] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 923] <... futex resumed>) = 0 [pid 931] rt_sigprocmask(SIG_SETMASK, [] [pid 926] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 931] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 926] <... futex resumed>) = 0 [pid 923] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 931] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 923] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... futex resumed>) = 0 [pid 926] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 923] <... futex resumed>) = 0 [pid 931] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 926] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 0 [pid 923] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 926] read(-1 [pid 923] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 923] <... futex resumed>) = 0 [pid 926] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 0 [pid 923] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 926] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 923] exit_group(0 [pid 926] <... futex resumed>) = ? [pid 923] <... exit_group resumed>) = ? [pid 926] +++ exited with 0 +++ [pid 923] +++ exited with 0 +++ ci2-android-6-1/strace-static-x86_64: Process 932 attached [pid 932] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 932] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 932] memfd_create("syzkaller", 0) = 3 [pid 932] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 ci2-android-6-1/strace-static-x86_64: Process 933 attached [pid 933] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 933] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 933] memfd_create("syzkaller", 0) = 3 [pid 933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 932] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 933] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 932] munmap(0x7f5cca900000, 138412032) = 0 [pid 932] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 932] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 932] ioctl(4, LOOP_CLR_FD) = 0 [pid 933] munmap(0x7f5cca900000, 138412032) = 0 [pid 933] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 933] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 933] ioctl(4, LOOP_CLR_FD [pid 932] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 932] close(4) = 0 [pid 932] close(3) = 0 [pid 933] <... ioctl resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=923, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 932] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... set_robust_list resumed>) = 0 [pid 928] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 930] rt_sigprocmask(SIG_SETMASK, [] [pid 928] memfd_create("syzkaller", 0 [pid 309] <... openat resumed>) = 3 [pid 930] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 928] <... memfd_create resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 928] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... ioctl resumed>) = 0 [pid 930] memfd_create("syzkaller", 0 [pid 309] close(3 [pid 930] <... memfd_create resumed>) = 3 [pid 928] <... mmap resumed>) = 0x7f5cca900000 [pid 309] <... close resumed>) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 933] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 309] <... clone resumed>, child_tidptr=0x55555618f750) = 934 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 933] close(4) = 0 [pid 933] close(3 [pid 928] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 930] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 929] <... futex resumed>) = 0 [pid 929] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] <... futex resumed>) = 1 [pid 930] <... mmap resumed>) = 0x7f5cca900000 [pid 932] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 932] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 929] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] <... futex resumed>) = 1 [pid 932] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 932] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 929] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] <... futex resumed>) = 1 [pid 932] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 932] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 929] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] <... futex resumed>) = 1 [pid 932] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 932] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 929] exit_group(0) = ? [pid 932] <... futex resumed>) = ? [pid 932] +++ exited with 0 +++ [pid 929] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=929, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 933] <... close resumed>) = 0 [pid 933] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... futex resumed>) = 0 [pid 931] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 931] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... futex resumed>) = 1 [pid 933] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 933] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... futex resumed>) = 0 [pid 931] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 931] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... futex resumed>) = 1 [pid 933] truncate("./file1", 36262 [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 935 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 933] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 933] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... futex resumed>) = 0 [pid 931] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 931] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... futex resumed>) = 1 [pid 933] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 933] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... futex resumed>) = 0 [pid 931] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 931] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... futex resumed>) = 1 [pid 933] read(-1, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 933] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... write resumed>) = 1048576 [pid 931] <... futex resumed>) = 0 [pid 931] exit_group(0) = ? [pid 933] <... futex resumed>) = ? [pid 933] +++ exited with 0 +++ [pid 931] +++ exited with 0 +++ [pid 930] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=931, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted rt_sigprocmask ...>ci2-android-6-1/strace-static-x86_64: Process 934 attached [pid 934] set_robust_list(0x55555618f760, 24) = 0 [pid 934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 934] setpgid(0, 0) = 0 [pid 934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 934] write(3, "1000", 4) = 4 [pid 934] close(3) = 0 [pid 934] write(1, "executing program\n", 18) = 18 executing program [pid 934] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 934] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 934] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 934] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 934] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 934] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[936]}, 88) = 936 [pid 934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 934] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 935 attached [pid 935] set_robust_list(0x55555618f760, 24) = 0 [pid 935] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 935] setpgid(0, 0) = 0 [pid 935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 935] write(3, "1000", 4) = 4 [pid 935] close(3) = 0 [pid 935] write(1, "executing program\n", 18) = 18 executing program [pid 935] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 935] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 935] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 935] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 935] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 310] <... restart_syscall resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 937 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 935] <... mprotect resumed>) = 0 [pid 935] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 935] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} => {parent_tid=[938]}, 88) = 938 [pid 935] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 935] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 935] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 937 attached [pid 937] set_robust_list(0x55555618f760, 24) = 0 [pid 937] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 937] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 937] setpgid(0, 0) = 0 [pid 937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 937] write(3, "1000", 4) = 4 [pid 937] close(3) = 0 [pid 937] write(1, "executing program\n", 18) = 18 executing program [pid 937] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 937] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 937] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 937] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE [pid 928] munmap(0x7f5cca900000, 138412032) = 0 [pid 930] <... write resumed>) = 1048576 [pid 928] openat(AT_FDCWD, "/dev/loop1", O_RDWRci2-android-6-1/strace-static-x86_64: Process 938 attached [pid 937] <... mprotect resumed>) = 0 [pid 938] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 937] rt_sigprocmask(SIG_BLOCK, ~[] [pid 938] rt_sigprocmask(SIG_SETMASK, [] [pid 928] <... openat resumed>) = 4 [pid 930] munmap(0x7f5cca900000, 138412032 [pid 938] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 938] memfd_create("syzkaller", 0 [pid 937] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 938] <... memfd_create resumed>) = 3 [pid 937] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 938] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [ 25.581734][ T43] ------------[ cut here ]------------ [ 25.587223][ T43] kernel BUG at fs/ext4/inode.c:2763! [ 25.595410][ T325] ------------[ cut here ]------------ [ 25.600878][ T325] kernel BUG at fs/ext4/inode.c:2763! [pid 937] <... clone3 resumed> => {parent_tid=[939]}, 88) = 939 [pid 937] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 937] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}ci2-android-6-1/strace-static-x86_64: Process 936 attached [pid 936] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 936] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 936] memfd_create("syzkaller", 0) = 3 [pid 936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 936] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576ci2-android-6-1/strace-static-x86_64: Process 939 attached [pid 939] set_robust_list(0x7f5cd2d209a0, 24) = 0 [pid 939] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 939] memfd_create("syzkaller", 0 [pid 938] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 939] <... memfd_create resumed>) = 3 [pid 939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5cca900000 [pid 939] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 938] <... write resumed>) = 1048576 [pid 936] <... write resumed>) = 1048576 [pid 938] munmap(0x7f5cca900000, 138412032) = 0 [pid 938] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 936] munmap(0x7f5cca900000, 138412032) = 0 [pid 938] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 938] ioctl(4, LOOP_CLR_FD) = 0 [pid 936] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 936] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 936] ioctl(4, LOOP_CLR_FD) = 0 [pid 938] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 938] close(4) = 0 [pid 938] close(3) = 0 [pid 936] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 936] close(4) = 0 [pid 936] close(3) = 0 [pid 939] <... write resumed>) = 1048576 [pid 938] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... futex resumed>) = 0 [pid 935] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 935] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] <... futex resumed>) = 1 [pid 938] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 938] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... futex resumed>) = 0 [pid 935] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 935] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] <... futex resumed>) = 1 [pid 938] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 936] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... futex resumed>) = 0 [pid 934] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... futex resumed>) = 1 [pid 935] <... futex resumed>) = 0 [pid 935] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 935] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 938] <... futex resumed>) = 1 [pid 936] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 938] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 938] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... futex resumed>) = 0 [pid 935] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 935] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] <... futex resumed>) = 1 [pid 938] read(-1 [pid 936] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 934] <... futex resumed>) = 0 [pid 934] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... futex resumed>) = 1 [pid 935] <... futex resumed>) = 0 [pid 935] exit_group(0) = ? [pid 936] truncate("./file1", 36262 [pid 938] <... futex resumed>) = ? [pid 936] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 938] +++ exited with 0 +++ [pid 935] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=935, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 311] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 936] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... futex resumed>) = 0 [pid 934] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] <... futex resumed>) = 1 [pid 936] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 936] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... futex resumed>) = 0 [pid 934] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] munmap(0x7f5cca900000, 138412032 [pid 936] <... futex resumed>) = 1 [pid 936] read(-1 [pid 939] <... munmap resumed>) = 0 [pid 936] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 936] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... futex resumed>) = 0 [pid 934] exit_group(0) = ? [pid 936] <... futex resumed>) = ? [pid 936] +++ exited with 0 +++ [pid 934] +++ exited with 0 +++ [pid 311] <... restart_syscall resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 940 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 939] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 939] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 939] ioctl(4, LOOP_CLR_FD) = 0 ci2-android-6-1/strace-static-x86_64: Process 940 attached [pid 940] set_robust_list(0x55555618f760, 24) = 0 [pid 940] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 940] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 939] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 939] close(4) = 0 [pid 939] close(3) = 0 [pid 940] <... prctl resumed>) = 0 [pid 940] setpgid(0, 0) = 0 [pid 940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 939] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... futex resumed>) = 0 [pid 937] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] <... futex resumed>) = 1 [pid 940] <... openat resumed>) = 3 [pid 939] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = -1 EISDIR (Is a directory) [pid 939] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... futex resumed>) = 0 [pid 937] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] <... futex resumed>) = 1 [pid 939] truncate("./file1", 36262) = -1 EISDIR (Is a directory) [pid 940] write(3, "1000", 4) = 4 [pid 939] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... futex resumed>) = 0 [pid 937] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] close(3 [pid 939] <... futex resumed>) = 1 [pid 940] <... close resumed>) = 0 [pid 939] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 939] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 940] write(1, "executing program\n", 18 [pid 937] <... futex resumed>) = 0 [pid 937] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] <... write resumed>) = 18 executing program [ 25.640871][ T43] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 25.647064][ T43] CPU: 0 PID: 43 Comm: kworker/u4:2 Not tainted syzkaller #0 [ 25.654486][ T43] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.664548][ T43] Workqueue: writeback wb_workfn (flush-7:1) [ 25.670591][ T43] RIP: 0010:ext4_writepages+0x3085/0x30a0 [pid 939] <... futex resumed>) = 1 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=934, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555618f750) = 941 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 939] read(-1 [pid 940] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [ 25.676343][ T43] Code: ac 84 ff 84 db 75 31 e8 99 a9 84 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 20 48 8b 5c 24 30 e9 41 d3 ff ff e8 7b a9 84 ff <0f> 0b e8 74 a9 84 ff e8 eb bf 13 ff eb 98 e8 68 a9 84 ff e8 df bf [ 25.695944][ T43] RSP: 0018:ffffc900002cf080 EFLAGS: 00010293 [ 25.701995][ T43] RAX: ffffffff81ecbcc5 RBX: 0000008410000000 RCX: ffff8881094e8000 [ 25.709942][ T43] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 25.717887][ T43] RBP: ffffc900002cf3f0 R08: ffff8881004a3f3f R09: 1ffff110200947e7 [ 25.725834][ T43] R10: dffffc0000000000 R11: ffffed10200947e8 R12: 0000000000000001 [ 25.733787][ T43] R13: dffffc0000000000 R14: 0000008000000000 R15: ffff888111cb4000 [ 25.741747][ T43] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 25.750661][ T43] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.757218][ T43] CR2: 00007ff222971000 CR3: 000000011e840000 CR4: 00000000003506b0 [ 25.765167][ T43] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.773113][ T43] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.781089][ T43] Call Trace: [ 25.784388][ T43] [ 25.787314][ T43] ? mlock_page_drain_local+0x10f/0x190 [ 25.792845][ T43] ? pagevec_lookup_range_tag+0x3c/0x80 [ 25.798373][ T43] ? write_cache_pages+0xa9d/0xbf0 [ 25.803474][ T43] ? __cfi___writepage+0x10/0x10 [ 25.808384][ T43] ? __cfi_write_cache_pages+0x10/0x10 [ 25.813817][ T43] ? __cfi_ext4_writepages+0x10/0x10 [ 25.819083][ T43] ? __kasan_check_write+0x14/0x20 [ 25.824169][ T43] ? __cfi_ext4_writepages+0x10/0x10 [ 25.829428][ T43] do_writepages+0x3ab/0x600 [ 25.834006][ T43] ? update_load_avg+0x497/0x13f0 [ 25.839022][ T43] ? __cfi_do_writepages+0x10/0x10 [ 25.844117][ T43] ? __cfi_wake_up_bit+0x10/0x10 [ 25.849052][ T43] ? __inode_add_lru+0xff/0x340 [ 25.853880][ T43] ? __kasan_check_write+0x14/0x20 [ 25.858970][ T43] __writeback_single_inode+0xd9/0xb10 [ 25.864405][ T43] ? wbc_attach_and_unlock_inode+0x2e6/0x500 [ 25.870388][ T43] writeback_sb_inodes+0x9fd/0x1610 [ 25.875597][ T43] ? queue_io+0x4b0/0x4b0 [ 25.879921][ T43] ? down_read_trylock+0x27f/0x660 [ 25.885017][ T43] __writeback_inodes_wb+0x127/0x400 [ 25.890284][ T43] wb_writeback+0x3ff/0x990 [ 25.894767][ T43] ? inode_cgwb_move_to_attached+0x3b0/0x3b0 [ 25.900724][ T43] ? __kasan_check_write+0x14/0x20 [ 25.905829][ T43] wb_workfn+0xae6/0xeb0 [ 25.910049][ T43] ? __cfi_wb_workfn+0x10/0x10 [ 25.914789][ T43] ? ttwu_do_activate+0x179/0x2a0 [ 25.919791][ T43] ? _raw_spin_unlock_irqrestore+0x5a/0x80 [ 25.925573][ T43] ? try_to_wake_up+0x622/0x1250 [ 25.930486][ T43] process_one_work+0x717/0xc30 [ 25.935313][ T43] worker_thread+0xa4d/0x11d0 [ 25.939966][ T43] kthread+0x281/0x320 [ 25.944010][ T43] ? __cfi_worker_thread+0x10/0x10 [ 25.949114][ T43] ? __cfi_kthread+0x10/0x10 [ 25.953693][ T43] ret_from_fork+0x1f/0x30 [ 25.958096][ T43] [ 25.961097][ T43] Modules linked in: [ 25.965023][ T325] invalid opcode: 0000 [#2] PREEMPT SMP KASAN [ 25.966337][ T43] ---[ end trace 0000000000000000 ]--- [ 25.971098][ T325] CPU: 1 PID: 325 Comm: kworker/u4:3 Tainted: G D syzkaller #0 [ 25.976631][ T43] RIP: 0010:ext4_writepages+0x3085/0x30a0 [ 25.985475][ T325] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.985487][ T325] Workqueue: writeback wb_workfn (flush-7:3) [ 25.985510][ T325] RIP: 0010:ext4_writepages+0x3085/0x30a0 [ 25.991232][ T43] Code: ac 84 ff 84 db 75 31 e8 99 a9 84 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 20 48 8b 5c 24 30 e9 41 d3 ff ff e8 7b a9 84 ff <0f> 0b e8 74 a9 84 ff e8 eb bf 13 ff eb 98 e8 68 a9 84 ff e8 df bf executing program ci2-android-6-1/strace-static-x86_64: Process 941 attached [pid 930] <... munmap resumed>) = 0 [pid 928] ioctl(4, LOOP_SET_FD, 3 [pid 941] set_robust_list(0x55555618f760, 24 [pid 930] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 941] <... set_robust_list resumed>) = 0 [pid 930] <... openat resumed>) = 4 [pid 928] ioctl(4, LOOP_CLR_FD [pid 941] rt_sigprocmask(SIG_SETMASK, [] [pid 930] ioctl(4, LOOP_SET_FD, 3 [pid 928] <... ioctl resumed>) = 0 [pid 941] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 930] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 941] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 930] ioctl(4, LOOP_CLR_FD [pid 941] <... prctl resumed>) = 0 [pid 930] <... ioctl resumed>) = 0 [pid 941] setpgid(0, 0) = 0 [pid 941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 941] write(3, "1000", 4) = 4 [pid 941] close(3) = 0 [pid 941] write(1, "executing program\n", 18) = 18 [pid 941] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 941] rt_sigaction(SIGRT_1, {sa_handler=0x7f5cd2d5f250, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5cd2d2f390}, NULL, 8) = 0 [pid 941] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5cd2d00000 [pid 941] mprotect(0x7f5cd2d01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 941] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 928] ioctl(4, LOOP_SET_FD, 3 [pid 941] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5cd2d20990, parent_tid=0x7f5cd2d20990, exit_signal=0, stack=0x7f5cd2d00000, stack_size=0x20240, tls=0x7f5cd2d206c0} [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 930] ioctl(4, LOOP_SET_FD, 3 [pid 928] close(4 [pid 941] <... clone3 resumed> => {parent_tid=[943]}, 88) = 943 [pid 930] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 928] <... close resumed>) = 0 [pid 941] rt_sigprocmask(SIG_SETMASK, [] [pid 930] close(4 [pid 928] close(3 [pid 941] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 930] <... close resumed>) = 0 [pid 928] <... close resumed>) = 0 [pid 941] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] close(3 [pid 928] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 941] <... futex resumed>) = 0 [pid 930] <... close resumed>) = 0 [pid 928] <... futex resumed>) = 1 [pid 941] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 930] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 930] <... futex resumed>) = 1 [pid 924] <... futex resumed>) = 0 [pid 930] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 924] <... futex resumed>) = 0 [pid 930] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 924] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 930] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 924] <... futex resumed>) = 0 [pid 930] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 924] <... futex resumed>) = 0 [pid 930] truncate("./file1", 36262 [pid 924] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 930] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 924] <... futex resumed>) = 0 [pid 930] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 924] <... futex resumed>) = 0 [pid 930] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 924] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 930] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 924] <... futex resumed>) = 0 [pid 930] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 924] <... futex resumed>) = 0 [pid 930] read(-1 [pid 924] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 930] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 924] <... futex resumed>) = 0 [pid 930] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] exit_group(0 [pid 930] <... futex resumed>) = ? [pid 924] <... exit_group resumed>) = ? [pid 930] +++ exited with 0 +++ [pid 924] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 927] <... futex resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 927] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... futex resumed>) = 0 [pid 927] <... futex resumed>) = 1 [pid 928] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025 [pid 927] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 928] <... openat resumed>) = -1 EISDIR (Is a directory) [pid 307] <... openat resumed>) = 3 [pid 928] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] ioctl(3, LOOP_CLR_FD [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 928] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] close(3 [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 928] truncate("./file1", 36262 [pid 927] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] rt_sigprocmask(SIG_BLOCK, ~[] [pid 928] <... truncate resumed>) = -1 EISDIR (Is a directory) [pid 307] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 928] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 928] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... clone resumed>, child_tidptr=0x55555618f750) = 944 [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 307] rt_sigprocmask(SIG_SETMASK, [] [pid 928] mmap(0x200000000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0 [pid 927] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 928] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 928] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 927] <... futex resumed>) = 0 [pid 928] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7f5cd2df2e28, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 928] read(-1 [pid 927] futex(0x7f5cd2df2e2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... read resumed>, 0x200000000400, 4294966961) = -1 EBADF (Bad file descriptor) [pid 928] futex(0x7f5cd2df2e2c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 927] <... futex resumed>) = 0 [pid 928] futex(0x7f5cd2df2e28, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] exit_group(0 [pid 928] <... futex resumed>) = ? [pid 927] <... exit_group resumed>) = ? [pid 928] +++ exited with 0 +++ [pid 927] +++ exited with 0 +++ [ 26.001236][ T325] Code: ac 84 ff 84 db 75 31 e8 99 a9 84 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 20 48 8b 5c 24 30 e9 41 d3 ff ff e8 7b a9 84 ff <0f> 0b e8 74 a9 84 ff e8 eb bf 13 ff eb 98 e8 68 a9 84 ff e8 df bf [ 26.001249][ T325] RSP: 0018:ffffc90000fa7080 EFLAGS: 00010293 [ 26.001264][ T325] RAX: ffffffff81ecbcc5 RBX: 0000008410000000 RCX: ffff88810fa28000 [ 26.001274][ T325] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 26.001284][ T325] RBP: ffffc90000fa73f0 R08: ffff8881004a5067 R09: 1ffff11020094a0c [ 26.001294][ T325] R10: dffffc0000000000 R11: ffffed1020094a0d R12: 0000000000000001 [ 26.001304][ T325] R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8881106b8000 [ 26.001315][ T325] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.070209][ T43] RSP: 0018:ffffc900002cf080 EFLAGS: 00010293 [ 26.074108][ T325] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.074122][ T325] CR2: 00007f5cd2df2e20 CR3: 000000011037e000 CR4: 00000000003506a0 [ 26.074137][ T325] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.074145][ T325] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.074155][ T325] Call Trace: [ 26.074160][ T325] [ 26.098208][ T43] [ 26.106964][ T325] ? mlock_page_drain_local+0x10f/0x190 [ 26.106991][ T325] ? pagevec_lookup_range_tag+0x3c/0x80 [ 26.107006][ T325] ? write_cache_pages+0xa9d/0xbf0 [ 26.107022][ T325] ? __cfi___writepage+0x10/0x10 [ 26.107037][ T325] ? __cfi_write_cache_pages+0x10/0x10 [ 26.129934][ T43] RAX: ffffffff81ecbcc5 RBX: 0000008410000000 RCX: ffff8881094e8000 [ 26.135578][ T325] ? __cfi_ext4_writepages+0x10/0x10 [ 26.135610][ T325] ? __kasan_check_write+0x14/0x20 [ 26.135628][ T325] ? __cfi_ext4_writepages+0x10/0x10 [ 26.152216][ T43] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 26.157633][ T325] do_writepages+0x3ab/0x600 [ 26.157661][ T325] ? __cfi____update_load_sum+0x10/0x10 [ 26.177821][ T43] RBP: ffffc900002cf3f0 R08: ffff8881004a3f3f R09: 1ffff110200947e7 [ 26.178632][ T325] ? xas_start+0x31d/0x3e0 [ 26.196658][ T43] R10: dffffc0000000000 R11: ffffed10200947e8 R12: 0000000000000001 [ 26.196943][ T325] ? __cfi_do_writepages+0x10/0x10 [ 26.206838][ T43] R13: dffffc0000000000 R14: 0000008000000000 R15: ffff888111cb4000 [ 26.210193][ T325] ? __cfi_wake_up_bit+0x10/0x10 [ 26.223119][ T43] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 26.228279][ T325] ? __inode_add_lru+0xff/0x340 [ 26.228304][ T325] ? __kasan_check_write+0x14/0x20 [ 26.248185][ T43] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.253734][ T325] __writeback_single_inode+0xd9/0xb10 [ 26.253768][ T325] ? wbc_attach_and_unlock_inode+0x2e6/0x500 [ 26.253787][ T325] writeback_sb_inodes+0x9fd/0x1610 [ 26.288937][ T43] CR2: 00007f5cd2d95420 CR3: 0000000111d91000 CR4: 00000000003506b0 [ 26.289579][ T325] ? queue_io+0x4b0/0x4b0 [ 26.303397][ T43] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.308668][ T325] ? down_read_trylock+0x27f/0x660 [ 26.314037][ T43] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.320975][ T325] __writeback_inodes_wb+0x127/0x400 [ 26.339299][ T325] wb_writeback+0x3ff/0x990 [ 26.340990][ T43] Kernel panic - not syncing: Fatal exception [ 26.343854][ T325] ? inode_cgwb_move_to_attached+0x3b0/0x3b0 [ 26.343882][ T325] ? __kasan_check_write+0x14/0x20 [ 26.343901][ T325] wb_workfn+0xae6/0xeb0 [ 26.343919][ T325] ? __cfi_wb_workfn+0x10/0x10 [ 26.343938][ T325] ? ttwu_do_activate+0x179/0x2a0 [ 26.343955][ T325] ? _raw_spin_unlock_irqrestore+0x5a/0x80 [ 26.343974][ T325] ? try_to_wake_up+0x622/0x1250 [ 26.343993][ T325] process_one_work+0x717/0xc30 [ 26.344010][ T325] worker_thread+0xa4d/0x11d0 [ 26.344029][ T325] kthread+0x281/0x320 [ 26.344044][ T325] ? __cfi_worker_thread+0x10/0x10 [ 26.344058][ T325] ? __cfi_kthread+0x10/0x10 [ 26.344073][ T325] ret_from_fork+0x1f/0x30 [ 26.344092][ T325] [ 26.344097][ T325] Modules linked in: [ 26.350404][ T43] Kernel Offset: disabled [ 26.424758][ T43] Rebooting in 86400 seconds..