ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor3000288251 <...> Warning: Permanently added '10.128.1.69' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor3000288251", ["ci2-upstream-fs/syz-executor3000288251"], 0x7ffdbc624c60 /* 10 vars */) = 0 brk(NULL) = 0x555567477000 brk(0x555567477d80) = 0x555567477d80 arch_prctl(ARCH_SET_FS, 0x555567477400) = 0 set_tid_address(0x5555674776d0) = 5624 set_robust_list(0x5555674776e0, 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}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-upstream-fs/syz-executor3000288251", 4096) = 44 getrandom("\x79\xca\xce\x3b\x19\xf4\xd9\xd2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555567477d80 brk(0x555567498d80) = 0x555567498d80 brk(0x555567499000) = 0x555567499000 mprotect(0x7fe50455f000, 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 getrandom("\x76\xd8\x49\x80\x2d\x64\x95\x25", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.godyWy", 0700) = 0 chmod("./syzkaller.godyWy", 0777) = 0 chdir("./syzkaller.godyWy") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5625 attached , child_tidptr=0x5555674776d0) = 5625 [pid 5625] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5625] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5625] chdir("./0") = 0 [pid 5625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5625] setpgid(0, 0) = 0 [pid 5625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5625] write(3, "1000", 4) = 4 [pid 5625] close(3) = 0 [pid 5625] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5625] write(1, "executing program\n", 18) = 18 executing program [pid 5625] memfd_create("syzkaller", 0) = 3 [pid 5625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5625] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5625] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5625] close(3) = 0 [pid 5625] close(4) = 0 [pid 5625] mkdir("./file1", 0777) = 0 [ 111.898994][ T5625] loop0: detected capacity change from 0 to 32768 [pid 5625] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5625] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5625] chdir("./file1") = 0 [pid 5625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5625] exit_group(0) = ? [pid 5625] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5625, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file1") = 0 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5626 attached , child_tidptr=0x5555674776d0) = 5626 [pid 5626] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] chdir("./1") = 0 [pid 5626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5626] setpgid(0, 0) = 0 [pid 5626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5626] write(3, "1000", 4) = 4 [pid 5626] close(3) = 0 [pid 5626] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5626] write(1, "executing program\n", 18) = 18 [pid 5626] memfd_create("syzkaller", 0) = 3 [pid 5626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5626] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5626] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5626] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5626] close(3) = 0 [pid 5626] close(4) = 0 [pid 5626] mkdir("./file1", 0777) = 0 [pid 5626] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5626] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5626] chdir("./file1") = 0 [pid 5626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5626] exit_group(0) = ? [pid 5626] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5626, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- [ 112.668627][ T5626] loop0: detected capacity change from 0 to 32768 umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./1/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./1/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file1") = 0 umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5627 attached , child_tidptr=0x5555674776d0) = 5627 [pid 5627] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5627] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5627] chdir("./2") = 0 [pid 5627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5627] setpgid(0, 0) = 0 [pid 5627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5627] write(3, "1000", 4) = 4 [pid 5627] close(3) = 0 [pid 5627] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5627] write(1, "executing program\n", 18) = 18 executing program [pid 5627] memfd_create("syzkaller", 0) = 3 [pid 5627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5627] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5627] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5627] close(3) = 0 [pid 5627] close(4) = 0 [pid 5627] mkdir("./file1", 0777) = 0 [pid 5627] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5627] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5627] chdir("./file1") = 0 [pid 5627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5627] exit_group(0) = ? [pid 5627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5627, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 113.382687][ T5627] loop0: detected capacity change from 0 to 32768 umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./2/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./2/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file1") = 0 umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5628 attached , child_tidptr=0x5555674776d0) = 5628 [pid 5628] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5628] chdir("./3") = 0 [pid 5628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5628] setpgid(0, 0) = 0 [pid 5628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5628] write(3, "1000", 4) = 4 [pid 5628] close(3) = 0 [pid 5628] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5628] write(1, "executing program\n", 18) = 18 [pid 5628] memfd_create("syzkaller", 0) = 3 [pid 5628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5628] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5628] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5628] close(3) = 0 [pid 5628] close(4) = 0 [pid 5628] mkdir("./file1", 0777) = 0 [pid 5628] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5628] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5628] chdir("./file1") = 0 [pid 5628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5628] exit_group(0) = ? [ 113.961206][ T5628] loop0: detected capacity change from 0 to 32768 [pid 5628] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5628, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./3/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./3/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file1") = 0 umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5629 attached , child_tidptr=0x5555674776d0) = 5629 [pid 5629] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5629] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5629] chdir("./4") = 0 [pid 5629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5629] setpgid(0, 0) = 0 [pid 5629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5629] write(3, "1000", 4) = 4 [pid 5629] close(3) = 0 [pid 5629] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5629] write(1, "executing program\n", 18) = 18 [pid 5629] memfd_create("syzkaller", 0) = 3 [pid 5629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5629] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5629] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5629] close(3) = 0 [pid 5629] close(4) = 0 [pid 5629] mkdir("./file1", 0777) = 0 [pid 5629] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5629] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5629] chdir("./file1") = 0 [pid 5629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5629] exit_group(0) = ? [ 114.589879][ T5629] loop0: detected capacity change from 0 to 32768 [pid 5629] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5629, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./4/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./4/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file1") = 0 umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5630 attached , child_tidptr=0x5555674776d0) = 5630 [pid 5630] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] chdir("./5") = 0 [pid 5630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5630] setpgid(0, 0) = 0 [pid 5630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "1000", 4) = 4 [pid 5630] close(3) = 0 [pid 5630] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5630] write(1, "executing program\n", 18) = 18 [pid 5630] memfd_create("syzkaller", 0) = 3 [pid 5630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5630] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5630] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5630] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5630] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5630] close(3) = 0 [pid 5630] close(4) = 0 [pid 5630] mkdir("./file1", 0777) = 0 [pid 5630] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5630] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5630] chdir("./file1") = 0 [pid 5630] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5630] exit_group(0) = ? [pid 5630] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5630, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 115.281252][ T5630] loop0: detected capacity change from 0 to 32768 umount2("./5/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./5/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file1") = 0 umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5631 attached , child_tidptr=0x5555674776d0) = 5631 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] <... set_robust_list resumed>) = 0 [pid 5631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5631] chdir("./6") = 0 [pid 5631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5631] setpgid(0, 0) = 0 [pid 5631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5631] write(3, "1000", 4) = 4 [pid 5631] close(3) = 0 [pid 5631] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5631] write(1, "executing program\n", 18) = 18 [pid 5631] memfd_create("syzkaller", 0) = 3 [pid 5631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5631] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5631] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5631] close(3) = 0 [pid 5631] close(4) = 0 [pid 5631] mkdir("./file1", 0777) = 0 [pid 5631] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5631] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5631] chdir("./file1") = 0 [pid 5631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5631] exit_group(0) = ? [ 116.010965][ T5631] loop0: detected capacity change from 0 to 32768 [pid 5631] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5631, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} --- umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./6/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./6/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file1") = 0 umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5632 attached , child_tidptr=0x5555674776d0) = 5632 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5632] set_robust_list(0x5555674776e0, 24) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5632] chdir("./7") = 0 [pid 5632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5632] setpgid(0, 0) = 0 [pid 5632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5632] write(3, "1000", 4) = 4 [pid 5632] close(3) = 0 [pid 5632] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5632] write(1, "executing program\n", 18) = 18 [pid 5632] memfd_create("syzkaller", 0) = 3 [pid 5632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5632] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5632] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5632] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5632] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5632] close(3) = 0 [pid 5632] close(4) = 0 [pid 5632] mkdir("./file1", 0777) = 0 [pid 5632] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5632] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5632] chdir("./file1") = 0 [pid 5632] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5632] exit_group(0) = ? [pid 5632] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5632, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- [ 116.600818][ T5632] loop0: detected capacity change from 0 to 32768 umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./7/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./7/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file1") = 0 umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5633 attached , child_tidptr=0x5555674776d0) = 5633 [pid 5633] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] chdir("./8") = 0 [pid 5633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5633] setpgid(0, 0) = 0 [pid 5633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5633] write(3, "1000", 4) = 4 [pid 5633] close(3) = 0 [pid 5633] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5633] write(1, "executing program\n", 18) = 18 [pid 5633] memfd_create("syzkaller", 0) = 3 [pid 5633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5633] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5633] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5633] close(3) = 0 [pid 5633] close(4) = 0 [pid 5633] mkdir("./file1", 0777) = 0 [pid 5633] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5633] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5633] chdir("./file1") = 0 [pid 5633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5633] exit_group(0) = ? [pid 5633] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5633, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 117.227407][ T5633] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./8/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./8/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file1") = 0 umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5634 attached , child_tidptr=0x5555674776d0) = 5634 [pid 5634] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5634] chdir("./9") = 0 [pid 5634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5634] setpgid(0, 0) = 0 [pid 5634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5634] write(3, "1000", 4) = 4 [pid 5634] close(3) = 0 [pid 5634] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5634] write(1, "executing program\n", 18) = 18 executing program [pid 5634] memfd_create("syzkaller", 0) = 3 [pid 5634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5634] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5634] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5634] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5634] close(3) = 0 [pid 5634] close(4) = 0 [pid 5634] mkdir("./file1", 0777) = 0 [pid 5634] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5634] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5634] chdir("./file1") = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5634] exit_group(0) = ? [pid 5634] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5634, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 117.840424][ T5634] loop0: detected capacity change from 0 to 32768 umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./9/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./9/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file1") = 0 umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5635 attached [pid 5635] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5635 [pid 5635] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5635] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5635] chdir("./10") = 0 [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5635] setpgid(0, 0) = 0 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5635] write(3, "1000", 4) = 4 [pid 5635] close(3) = 0 [pid 5635] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5635] write(1, "executing program\n", 18) = 18 executing program [pid 5635] memfd_create("syzkaller", 0) = 3 [pid 5635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5635] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5635] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5635] close(3) = 0 [pid 5635] close(4) = 0 [pid 5635] mkdir("./file1", 0777) = 0 [pid 5635] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5635] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5635] chdir("./file1") = 0 [pid 5635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5635] exit_group(0) = ? [ 118.407472][ T5635] loop0: detected capacity change from 0 to 32768 [pid 5635] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5635, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./10/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./10/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file1") = 0 umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5636 attached , child_tidptr=0x5555674776d0) = 5636 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... set_robust_list resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] chdir("./11") = 0 [pid 5636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5636] setpgid(0, 0) = 0 [pid 5636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5636] write(3, "1000", 4) = 4 [pid 5636] close(3) = 0 [pid 5636] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5636] write(1, "executing program\n", 18) = 18 [pid 5636] memfd_create("syzkaller", 0) = 3 [pid 5636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5636] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5636] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5636] close(3) = 0 [pid 5636] close(4) = 0 [pid 5636] mkdir("./file1", 0777) = 0 [pid 5636] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5636] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5636] chdir("./file1") = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] exit_group(0) = ? [pid 5636] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5636, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [ 119.053496][ T5636] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./11/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./11/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file1") = 0 umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5637 attached , child_tidptr=0x5555674776d0) = 5637 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... set_robust_list resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] chdir("./12") = 0 [pid 5637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] setpgid(0, 0) = 0 [pid 5637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5637] write(3, "1000", 4) = 4 [pid 5637] close(3) = 0 [pid 5637] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5637] write(1, "executing program\n", 18) = 18 [pid 5637] memfd_create("syzkaller", 0) = 3 [pid 5637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5637] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5637] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5637] close(3) = 0 [pid 5637] close(4) = 0 [pid 5637] mkdir("./file1", 0777) = 0 [pid 5637] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5637] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5637] chdir("./file1") = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5637] exit_group(0) = ? [pid 5637] +++ exited with 0 +++ [ 119.618628][ T5637] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5637, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./12/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./12/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file1") = 0 umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5638 attached , child_tidptr=0x5555674776d0) = 5638 [pid 5638] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] chdir("./13") = 0 [pid 5638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] setpgid(0, 0) = 0 [pid 5638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5638] write(3, "1000", 4) = 4 [pid 5638] close(3) = 0 [pid 5638] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5638] write(1, "executing program\n", 18) = 18 [pid 5638] memfd_create("syzkaller", 0) = 3 [pid 5638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5638] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5638] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5638] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5638] close(3) = 0 [pid 5638] close(4) = 0 [pid 5638] mkdir("./file1", 0777) = 0 [pid 5638] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5638] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5638] chdir("./file1") = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5638] exit_group(0) = ? [pid 5638] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5638, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=16 /* 0.16 s */} --- [ 120.248013][ T5638] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./13/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./13/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file1") = 0 umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5639 attached , child_tidptr=0x5555674776d0) = 5639 [pid 5639] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5639] chdir("./14") = 0 [pid 5639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5639] setpgid(0, 0) = 0 [pid 5639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5639] write(3, "1000", 4) = 4 [pid 5639] close(3) = 0 [pid 5639] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5639] write(1, "executing program\n", 18) = 18 [pid 5639] memfd_create("syzkaller", 0) = 3 [pid 5639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5639] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5639] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5639] close(3) = 0 [pid 5639] close(4) = 0 [pid 5639] mkdir("./file1", 0777) = 0 [pid 5639] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5639] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5639] chdir("./file1") = 0 [pid 5639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5639] exit_group(0) = ? [pid 5639] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5639, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 120.904765][ T5639] loop0: detected capacity change from 0 to 32768 umount2("./14/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./14/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file1") = 0 umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5640 attached , child_tidptr=0x5555674776d0) = 5640 [pid 5640] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] chdir("./15") = 0 [pid 5640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5640] setpgid(0, 0) = 0 [pid 5640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5640] write(3, "1000", 4) = 4 [pid 5640] close(3) = 0 [pid 5640] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5640] write(1, "executing program\n", 18) = 18 [pid 5640] memfd_create("syzkaller", 0) = 3 [pid 5640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5640] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5640] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5640] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5640] close(3) = 0 [pid 5640] close(4) = 0 [pid 5640] mkdir("./file1", 0777) = 0 [pid 5640] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5640] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 121.474936][ T5640] loop0: detected capacity change from 0 to 32768 [pid 5640] chdir("./file1") = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5640] exit_group(0) = ? [pid 5640] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5640, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./15/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./15/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file1") = 0 umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5641 attached , child_tidptr=0x5555674776d0) = 5641 [pid 5641] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5641] chdir("./16") = 0 [pid 5641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5641] setpgid(0, 0) = 0 [pid 5641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5641] write(3, "1000", 4) = 4 [pid 5641] close(3) = 0 [pid 5641] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5641] write(1, "executing program\n", 18) = 18 [pid 5641] memfd_create("syzkaller", 0) = 3 [pid 5641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5641] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5641] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5641] close(3) = 0 [pid 5641] close(4) = 0 [pid 5641] mkdir("./file1", 0777) = 0 [pid 5641] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5641] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5641] chdir("./file1") = 0 [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5641] exit_group(0) = ? [pid 5641] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5641, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 122.094299][ T5641] loop0: detected capacity change from 0 to 32768 umount2("./16/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./16/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file1") = 0 umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5642 attached , child_tidptr=0x5555674776d0) = 5642 [pid 5642] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5642] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5642] chdir("./17") = 0 [pid 5642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5642] setpgid(0, 0) = 0 [pid 5642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5642] write(3, "1000", 4) = 4 [pid 5642] close(3) = 0 [pid 5642] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5642] write(1, "executing program\n", 18) = 18 executing program [pid 5642] memfd_create("syzkaller", 0) = 3 [pid 5642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5642] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5642] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5642] close(3) = 0 [pid 5642] close(4) = 0 [pid 5642] mkdir("./file1", 0777) = 0 [pid 5642] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5642] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5642] chdir("./file1") = 0 [pid 5642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5642] exit_group(0) = ? [pid 5642] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5642, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 122.641985][ T5642] loop0: detected capacity change from 0 to 32768 umount2("./17/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./17/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file1") = 0 umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5643 attached , child_tidptr=0x5555674776d0) = 5643 [pid 5643] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5643] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] chdir("./18") = 0 [pid 5643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5643] setpgid(0, 0) = 0 [pid 5643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5643] write(3, "1000", 4) = 4 [pid 5643] close(3) = 0 [pid 5643] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5643] write(1, "executing program\n", 18) = 18 [pid 5643] memfd_create("syzkaller", 0) = 3 [pid 5643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5643] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5643] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5643] close(3) = 0 [pid 5643] close(4) = 0 [pid 5643] mkdir("./file1", 0777) = 0 [pid 5643] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5643] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5643] chdir("./file1") = 0 [ 123.277296][ T5643] loop0: detected capacity change from 0 to 32768 [pid 5643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5643] exit_group(0) = ? [pid 5643] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5643, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=26 /* 0.26 s */} --- umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./18/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./18/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file1") = 0 umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5644 attached , child_tidptr=0x5555674776d0) = 5644 [pid 5644] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5644] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] chdir("./19") = 0 [pid 5644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5644] setpgid(0, 0) = 0 [pid 5644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5644] write(3, "1000", 4) = 4 [pid 5644] close(3) = 0 [pid 5644] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5644] write(1, "executing program\n", 18) = 18 executing program [pid 5644] memfd_create("syzkaller", 0) = 3 [pid 5644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5644] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5644] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5644] close(3) = 0 [pid 5644] close(4) = 0 [pid 5644] mkdir("./file1", 0777) = 0 [pid 5644] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5644] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5644] chdir("./file1") = 0 [pid 5644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5644] exit_group(0) = ? [pid 5644] +++ exited with 0 +++ [ 124.100323][ T5644] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5644, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./19/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./19/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file1") = 0 umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5645 attached , child_tidptr=0x5555674776d0) = 5645 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5645] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5645] <... set_robust_list resumed>) = 0 [pid 5645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5645] chdir("./20") = 0 [pid 5645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5645] setpgid(0, 0) = 0 [pid 5645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5645] write(3, "1000", 4) = 4 [pid 5645] close(3) = 0 [pid 5645] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5645] write(1, "executing program\n", 18) = 18 [pid 5645] memfd_create("syzkaller", 0) = 3 [pid 5645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5645] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5645] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5645] close(3) = 0 [pid 5645] close(4) = 0 [pid 5645] mkdir("./file1", 0777) = 0 [pid 5645] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5645] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5645] chdir("./file1") = 0 [pid 5645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5645] exit_group(0) = ? [pid 5645] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5645, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [ 124.751950][ T5645] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./20/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./20/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file1") = 0 umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5646 attached , child_tidptr=0x5555674776d0) = 5646 [pid 5646] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5646] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5646] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5646] chdir("./21") = 0 [pid 5646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5646] setpgid(0, 0) = 0 [pid 5646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5646] write(3, "1000", 4) = 4 [pid 5646] close(3) = 0 [pid 5646] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5646] write(1, "executing program\n", 18) = 18 [pid 5646] memfd_create("syzkaller", 0) = 3 [pid 5646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5646] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5646] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5646] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5646] close(3) = 0 [pid 5646] close(4) = 0 [pid 5646] mkdir("./file1", 0777) = 0 [pid 5646] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5646] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5646] chdir("./file1") = 0 [pid 5646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5646] exit_group(0) = ? [ 125.339692][ T5646] loop0: detected capacity change from 0 to 32768 [pid 5646] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5646, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./21/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./21/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file1") = 0 umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5647 attached , child_tidptr=0x5555674776d0) = 5647 [pid 5647] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5647] <... set_robust_list resumed>) = 0 [pid 5647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5647] chdir("./22") = 0 [pid 5647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5647] setpgid(0, 0) = 0 [pid 5647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "1000", 4) = 4 [pid 5647] close(3) = 0 [pid 5647] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5647] write(1, "executing program\n", 18) = 18 [pid 5647] memfd_create("syzkaller", 0) = 3 [pid 5647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5647] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5647] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5647] close(3) = 0 [pid 5647] close(4) = 0 [pid 5647] mkdir("./file1", 0777) = 0 [pid 5647] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5647] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5647] chdir("./file1") = 0 [pid 5647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5647] exit_group(0) = ? [pid 5647] +++ exited with 0 +++ [ 125.984024][ T5647] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5647, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./22/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./22/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file1") = 0 umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5648 attached , child_tidptr=0x5555674776d0) = 5648 [pid 5648] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5648] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5648] chdir("./23") = 0 [pid 5648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5648] setpgid(0, 0) = 0 [pid 5648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5648] write(3, "1000", 4) = 4 [pid 5648] close(3) = 0 [pid 5648] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5648] write(1, "executing program\n", 18) = 18 executing program [pid 5648] memfd_create("syzkaller", 0) = 3 [pid 5648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5648] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5648] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5648] close(3) = 0 [pid 5648] close(4) = 0 [pid 5648] mkdir("./file1", 0777) = 0 [pid 5648] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5648] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5648] chdir("./file1") = 0 [pid 5648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5648] exit_group(0) = ? [pid 5648] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5648, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 126.714976][ T5648] loop0: detected capacity change from 0 to 32768 umount2("./23/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./23/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file1") = 0 umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5649 attached , child_tidptr=0x5555674776d0) = 5649 [pid 5649] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5649] chdir("./24") = 0 [pid 5649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5649] setpgid(0, 0) = 0 [pid 5649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5649] write(3, "1000", 4) = 4 [pid 5649] close(3) = 0 [pid 5649] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5649] write(1, "executing program\n", 18) = 18 executing program [pid 5649] memfd_create("syzkaller", 0) = 3 [pid 5649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5649] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5649] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5649] close(3) = 0 [pid 5649] close(4) = 0 [pid 5649] mkdir("./file1", 0777) = 0 [ 127.350477][ T5649] loop0: detected capacity change from 0 to 32768 [pid 5649] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5649] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5649] chdir("./file1") = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5649] exit_group(0) = ? [pid 5649] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5649, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./24/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./24/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file1") = 0 umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5650 attached , child_tidptr=0x5555674776d0) = 5650 [pid 5650] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] chdir("./25") = 0 [pid 5650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5650] setpgid(0, 0) = 0 [pid 5650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5650] write(3, "1000", 4) = 4 [pid 5650] close(3) = 0 [pid 5650] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5650] write(1, "executing program\n", 18) = 18 [pid 5650] memfd_create("syzkaller", 0) = 3 [pid 5650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5650] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5650] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5650] close(3) = 0 [pid 5650] close(4) = 0 [pid 5650] mkdir("./file1", 0777) = 0 [pid 5650] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5650] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5650] chdir("./file1") = 0 [pid 5650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5650] exit_group(0) = ? [pid 5650] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5650, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 128.049096][ T5650] loop0: detected capacity change from 0 to 32768 umount2("./25/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./25/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file1") = 0 umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5651 attached , child_tidptr=0x5555674776d0) = 5651 [pid 5651] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5651] <... set_robust_list resumed>) = 0 [pid 5651] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5651] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5651] chdir("./26") = 0 [pid 5651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5651] setpgid(0, 0) = 0 [pid 5651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5651] write(3, "1000", 4) = 4 [pid 5651] close(3) = 0 [pid 5651] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5651] write(1, "executing program\n", 18) = 18 [pid 5651] memfd_create("syzkaller", 0) = 3 [pid 5651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5651] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5651] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5651] close(3) = 0 [pid 5651] close(4) = 0 [pid 5651] mkdir("./file1", 0777) = 0 [pid 5651] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5651] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5651] chdir("./file1") = 0 [pid 5651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5651] exit_group(0) = ? [pid 5651] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5651, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 128.682402][ T5651] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./26/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./26/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file1") = 0 umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5652 attached , child_tidptr=0x5555674776d0) = 5652 [pid 5652] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5652] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5652] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5652] chdir("./27") = 0 [pid 5652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5652] setpgid(0, 0) = 0 [pid 5652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5652] write(3, "1000", 4) = 4 [pid 5652] close(3) = 0 [pid 5652] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5652] write(1, "executing program\n", 18) = 18 executing program [pid 5652] memfd_create("syzkaller", 0) = 3 [pid 5652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5652] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5652] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5652] close(3) = 0 [pid 5652] close(4) = 0 [pid 5652] mkdir("./file1", 0777) = 0 [pid 5652] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5652] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5652] chdir("./file1") = 0 [pid 5652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5652] exit_group(0) = ? [pid 5652] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5652, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 129.397157][ T5652] loop0: detected capacity change from 0 to 32768 umount2("./27/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./27/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file1") = 0 umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5653 attached , child_tidptr=0x5555674776d0) = 5653 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5653] set_robust_list(0x5555674776e0, 24) = 0 [pid 5653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5653] chdir("./28") = 0 [pid 5653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5653] setpgid(0, 0) = 0 [pid 5653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5653] write(3, "1000", 4) = 4 [pid 5653] close(3) = 0 [pid 5653] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5653] write(1, "executing program\n", 18) = 18 executing program [pid 5653] memfd_create("syzkaller", 0) = 3 [pid 5653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5653] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5653] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5653] close(3) = 0 [pid 5653] close(4) = 0 [pid 5653] mkdir("./file1", 0777) = 0 [pid 5653] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5653] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5653] chdir("./file1") = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 129.971772][ T5653] loop0: detected capacity change from 0 to 32768 [pid 5653] exit_group(0) = ? [pid 5653] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5653, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./28/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./28/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file1") = 0 umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5655 attached , child_tidptr=0x5555674776d0) = 5655 [pid 5655] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5655] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5655] chdir("./29") = 0 [pid 5655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5655] setpgid(0, 0) = 0 [pid 5655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5655] write(3, "1000", 4) = 4 [pid 5655] close(3) = 0 [pid 5655] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5655] write(1, "executing program\n", 18) = 18 executing program [pid 5655] memfd_create("syzkaller", 0) = 3 [pid 5655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5655] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5655] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5655] close(3) = 0 [pid 5655] close(4) = 0 [pid 5655] mkdir("./file1", 0777) = 0 [pid 5655] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5655] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5655] chdir("./file1") = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5655] exit_group(0) = ? [pid 5655] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5655, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [ 130.613016][ T5655] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./29/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./29/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file1") = 0 umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5657 attached [pid 5657] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5657 [pid 5657] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5657] chdir("./30") = 0 [pid 5657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5657] setpgid(0, 0) = 0 [pid 5657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5657] write(3, "1000", 4) = 4 [pid 5657] close(3) = 0 [pid 5657] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5657] write(1, "executing program\n", 18) = 18 [pid 5657] memfd_create("syzkaller", 0) = 3 [pid 5657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5657] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5657] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5657] close(3) = 0 [pid 5657] close(4) = 0 [pid 5657] mkdir("./file1", 0777) = 0 [pid 5657] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5657] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5657] chdir("./file1") = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5657] exit_group(0) = ? [pid 5657] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5657, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 131.209334][ T5657] loop0: detected capacity change from 0 to 32768 umount2("./30/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./30/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file1") = 0 umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5658 attached , child_tidptr=0x5555674776d0) = 5658 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5658] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5658] <... set_robust_list resumed>) = 0 [pid 5658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5658] chdir("./31") = 0 [pid 5658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5658] setpgid(0, 0) = 0 [pid 5658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1000", 4) = 4 [pid 5658] close(3) = 0 [pid 5658] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5658] write(1, "executing program\n", 18) = 18 executing program [pid 5658] memfd_create("syzkaller", 0) = 3 [pid 5658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5658] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5658] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5658] close(3) = 0 [pid 5658] close(4) = 0 [pid 5658] mkdir("./file1", 0777) = 0 [pid 5658] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5658] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 131.809356][ T5658] loop0: detected capacity change from 0 to 32768 [pid 5658] chdir("./file1") = 0 [pid 5658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5658] exit_group(0) = ? [pid 5658] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5658, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./31/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./31/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file1") = 0 umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5663 attached , child_tidptr=0x5555674776d0) = 5663 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5663] set_robust_list(0x5555674776e0, 24) = 0 [pid 5663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5663] chdir("./32") = 0 [pid 5663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5663] setpgid(0, 0) = 0 [pid 5663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5663] write(3, "1000", 4) = 4 [pid 5663] close(3) = 0 [pid 5663] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5663] write(1, "executing program\n", 18) = 18 [pid 5663] memfd_create("syzkaller", 0) = 3 [pid 5663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5663] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5663] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5663] close(3) = 0 [pid 5663] close(4) = 0 [pid 5663] mkdir("./file1", 0777) = 0 [pid 5663] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5663] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5663] chdir("./file1") = 0 [ 132.564625][ T5663] loop0: detected capacity change from 0 to 32768 [pid 5663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5663] exit_group(0) = ? [pid 5663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5663, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./32/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./32/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file1") = 0 umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5664 attached , child_tidptr=0x5555674776d0) = 5664 [pid 5664] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5664] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5664] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5664] chdir("./33") = 0 [pid 5664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5664] setpgid(0, 0) = 0 [pid 5664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5664] write(3, "1000", 4) = 4 [pid 5664] close(3) = 0 [pid 5664] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5664] write(1, "executing program\n", 18) = 18 [pid 5664] memfd_create("syzkaller", 0) = 3 [pid 5664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5664] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5664] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5664] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5664] close(3) = 0 [pid 5664] close(4) = 0 [pid 5664] mkdir("./file1", 0777) = 0 [pid 5664] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5664] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5664] chdir("./file1") = 0 [pid 5664] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5664] exit_group(0) = ? [pid 5664] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5664, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 s */} --- umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 133.172654][ T5664] loop0: detected capacity change from 0 to 32768 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./33/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./33/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file1") = 0 umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./33") = 0 mkdir("./34", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5665 attached , child_tidptr=0x5555674776d0) = 5665 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5665] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] <... set_robust_list resumed>) = 0 [pid 5665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5665] chdir("./34") = 0 [pid 5665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5665] setpgid(0, 0) = 0 [pid 5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5665] write(3, "1000", 4) = 4 [pid 5665] close(3) = 0 [pid 5665] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5665] write(1, "executing program\n", 18) = 18 [pid 5665] memfd_create("syzkaller", 0) = 3 [pid 5665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5665] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5665] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5665] close(3) = 0 [pid 5665] close(4) = 0 [pid 5665] mkdir("./file1", 0777) = 0 [pid 5665] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5665] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5665] chdir("./file1") = 0 [pid 5665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5665] exit_group(0) = ? [pid 5665] +++ exited with 0 +++ [ 133.779027][ T5665] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5665, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./34/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./34/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file1") = 0 umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5666 attached , child_tidptr=0x5555674776d0) = 5666 [pid 5666] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5666] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5666] chdir("./35") = 0 [pid 5666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5666] setpgid(0, 0) = 0 [pid 5666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5666] write(3, "1000", 4) = 4 [pid 5666] close(3) = 0 [pid 5666] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5666] write(1, "executing program\n", 18) = 18 [pid 5666] memfd_create("syzkaller", 0) = 3 [pid 5666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5666] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5666] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5666] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5666] close(3) = 0 [pid 5666] close(4) = 0 [pid 5666] mkdir("./file1", 0777) = 0 [pid 5666] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5666] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5666] chdir("./file1") = 0 [pid 5666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5666] exit_group(0) = ? [pid 5666] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5666, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- [ 134.493782][ T5666] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./35/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./35/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file1") = 0 umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5667 attached , child_tidptr=0x5555674776d0) = 5667 [pid 5667] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5667] <... set_robust_list resumed>) = 0 [pid 5667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5667] chdir("./36") = 0 [pid 5667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5667] setpgid(0, 0) = 0 [pid 5667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5667] write(3, "1000", 4) = 4 [pid 5667] close(3) = 0 [pid 5667] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5667] write(1, "executing program\n", 18) = 18 [pid 5667] memfd_create("syzkaller", 0) = 3 [pid 5667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5667] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5667] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5667] close(3) = 0 [pid 5667] close(4) = 0 [pid 5667] mkdir("./file1", 0777) = 0 [pid 5667] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5667] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5667] chdir("./file1") = 0 [pid 5667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5667] exit_group(0) = ? [pid 5667] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5667, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 135.062493][ T5667] loop0: detected capacity change from 0 to 32768 umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./36/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./36/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file1") = 0 umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5668 attached , child_tidptr=0x5555674776d0) = 5668 [pid 5668] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5668] chdir("./37") = 0 [pid 5668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5668] setpgid(0, 0) = 0 [pid 5668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5668] write(3, "1000", 4) = 4 [pid 5668] close(3) = 0 [pid 5668] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5668] write(1, "executing program\n", 18) = 18 executing program [pid 5668] memfd_create("syzkaller", 0) = 3 [pid 5668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5668] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5668] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5668] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5668] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5668] close(3) = 0 [pid 5668] close(4) = 0 [pid 5668] mkdir("./file1", 0777) = 0 [pid 5668] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5668] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5668] chdir("./file1") = 0 [pid 5668] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5668] exit_group(0) = ? [pid 5668] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5668, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 135.648425][ T5668] loop0: detected capacity change from 0 to 32768 umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./37/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./37/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file1") = 0 umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5669 attached , child_tidptr=0x5555674776d0) = 5669 [pid 5669] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5669] chdir("./38") = 0 [pid 5669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5669] setpgid(0, 0) = 0 [pid 5669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5669] write(3, "1000", 4) = 4 [pid 5669] close(3) = 0 [pid 5669] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5669] write(1, "executing program\n", 18) = 18 [pid 5669] memfd_create("syzkaller", 0) = 3 [pid 5669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5669] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5669] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5669] close(3) = 0 [pid 5669] close(4) = 0 [pid 5669] mkdir("./file1", 0777) = 0 [pid 5669] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5669] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5669] chdir("./file1") = 0 [pid 5669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5669] exit_group(0) = ? [pid 5669] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5669, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 136.227117][ T5669] loop0: detected capacity change from 0 to 32768 umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./38/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./38/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file1") = 0 umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5670 attached , child_tidptr=0x5555674776d0) = 5670 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5670] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5670] <... set_robust_list resumed>) = 0 [pid 5670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5670] chdir("./39") = 0 [pid 5670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5670] setpgid(0, 0) = 0 [pid 5670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5670] write(3, "1000", 4) = 4 [pid 5670] close(3) = 0 [pid 5670] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5670] write(1, "executing program\n", 18) = 18 [pid 5670] memfd_create("syzkaller", 0) = 3 [pid 5670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5670] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5670] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5670] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5670] close(3) = 0 [pid 5670] close(4) = 0 [pid 5670] mkdir("./file1", 0777) = 0 [pid 5670] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 136.856694][ T5670] loop0: detected capacity change from 0 to 32768 [pid 5670] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5670] chdir("./file1") = 0 [pid 5670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5670] exit_group(0) = ? [pid 5670] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5670, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./39/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./39/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file1") = 0 umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./39") = 0 mkdir("./40", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5671 attached , child_tidptr=0x5555674776d0) = 5671 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5671] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5671] <... set_robust_list resumed>) = 0 [pid 5671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5671] chdir("./40") = 0 [pid 5671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5671] setpgid(0, 0) = 0 [pid 5671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5671] write(3, "1000", 4) = 4 [pid 5671] close(3) = 0 [pid 5671] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5671] write(1, "executing program\n", 18) = 18 executing program [pid 5671] memfd_create("syzkaller", 0) = 3 [pid 5671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5671] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5671] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5671] close(3) = 0 [pid 5671] close(4) = 0 [pid 5671] mkdir("./file1", 0777) = 0 [pid 5671] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5671] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5671] chdir("./file1") = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5671] exit_group(0) = ? [pid 5671] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5671, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=15 /* 0.15 s */} --- [ 137.621628][ T5671] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./40/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./40/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file1") = 0 umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5672 attached , child_tidptr=0x5555674776d0) = 5672 [pid 5672] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5672] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5672] chdir("./41") = 0 [pid 5672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5672] setpgid(0, 0) = 0 [pid 5672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5672] write(3, "1000", 4) = 4 [pid 5672] close(3) = 0 [pid 5672] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5672] write(1, "executing program\n", 18) = 18 executing program [pid 5672] memfd_create("syzkaller", 0) = 3 [pid 5672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5672] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5672] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5672] close(3) = 0 [pid 5672] close(4) = 0 [pid 5672] mkdir("./file1", 0777) = 0 [pid 5672] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5672] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5672] chdir("./file1") = 0 [pid 5672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5672] exit_group(0) = ? [pid 5672] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5672, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 138.294214][ T5672] loop0: detected capacity change from 0 to 32768 umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./41/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./41/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file1") = 0 umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./41") = 0 mkdir("./42", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555674776d0) = 5673 ci2-upstream-fs/strace-static-x86_64: Process 5673 attached [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5673] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5673] <... set_robust_list resumed>) = 0 [pid 5673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5673] chdir("./42") = 0 [pid 5673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5673] setpgid(0, 0) = 0 [pid 5673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5673] write(3, "1000", 4) = 4 [pid 5673] close(3) = 0 [pid 5673] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5673] write(1, "executing program\n", 18) = 18 [pid 5673] memfd_create("syzkaller", 0) = 3 [pid 5673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5673] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5673] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5673] close(3) = 0 [pid 5673] close(4) = 0 [pid 5673] mkdir("./file1", 0777) = 0 [pid 5673] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5673] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5673] chdir("./file1") = 0 [ 138.944360][ T5673] loop0: detected capacity change from 0 to 32768 [pid 5673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5673] exit_group(0) = ? [pid 5673] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5673, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./42/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./42/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file1") = 0 umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5674 attached [pid 5674] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5674 [pid 5674] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5674] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5674] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5674] chdir("./43") = 0 [pid 5674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5674] setpgid(0, 0) = 0 [pid 5674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5674] write(3, "1000", 4) = 4 [pid 5674] close(3) = 0 [pid 5674] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5674] write(1, "executing program\n", 18) = 18 [pid 5674] memfd_create("syzkaller", 0) = 3 [pid 5674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5674] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5674] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5674] close(3) = 0 [pid 5674] close(4) = 0 [pid 5674] mkdir("./file1", 0777) = 0 [pid 5674] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5674] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5674] chdir("./file1") = 0 [pid 5674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5674] exit_group(0) = ? [pid 5674] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5674, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- [ 139.578420][ T5674] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./43/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./43/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file1") = 0 umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5675 attached , child_tidptr=0x5555674776d0) = 5675 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5675] set_robust_list(0x5555674776e0, 24) = 0 [pid 5675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5675] chdir("./44") = 0 [pid 5675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5675] setpgid(0, 0) = 0 [pid 5675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5675] write(3, "1000", 4) = 4 [pid 5675] close(3) = 0 [pid 5675] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5675] write(1, "executing program\n", 18) = 18 [pid 5675] memfd_create("syzkaller", 0) = 3 [pid 5675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5675] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5675] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5675] close(3) = 0 [pid 5675] close(4) = 0 [pid 5675] mkdir("./file1", 0777) = 0 [pid 5675] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5675] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5675] chdir("./file1") = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5675] exit_group(0) = ? [pid 5675] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5675, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [ 140.248281][ T5675] loop0: detected capacity change from 0 to 32768 umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./44/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./44/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file1") = 0 umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5676 attached , child_tidptr=0x5555674776d0) = 5676 [pid 5676] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5676] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5676] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5676] chdir("./45") = 0 [pid 5676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5676] setpgid(0, 0) = 0 [pid 5676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5676] write(3, "1000", 4) = 4 [pid 5676] close(3) = 0 [pid 5676] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5676] write(1, "executing program\n", 18) = 18 [pid 5676] memfd_create("syzkaller", 0) = 3 [pid 5676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5676] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5676] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5676] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5676] close(3) = 0 [pid 5676] close(4) = 0 [pid 5676] mkdir("./file1", 0777) = 0 [pid 5676] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5676] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5676] chdir("./file1") = 0 [pid 5676] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5676] exit_group(0) = ? [pid 5676] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5676, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 140.849545][ T5676] loop0: detected capacity change from 0 to 32768 umount2("./45/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./45/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file1") = 0 umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5677 attached , child_tidptr=0x5555674776d0) = 5677 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5677] set_robust_list(0x5555674776e0, 24) = 0 [pid 5677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5677] chdir("./46") = 0 [pid 5677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5677] setpgid(0, 0) = 0 [pid 5677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5677] write(3, "1000", 4) = 4 [pid 5677] close(3) = 0 [pid 5677] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5677] write(1, "executing program\n", 18) = 18 executing program [pid 5677] memfd_create("syzkaller", 0) = 3 [pid 5677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5677] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5677] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5677] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5677] close(3) = 0 [pid 5677] close(4) = 0 [pid 5677] mkdir("./file1", 0777) = 0 [pid 5677] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5677] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5677] chdir("./file1") = 0 [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5677] exit_group(0) = ? [ 141.418842][ T5677] loop0: detected capacity change from 0 to 32768 [pid 5677] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5677, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./46/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./46/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file1") = 0 umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5678 attached , child_tidptr=0x5555674776d0) = 5678 [pid 5678] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5678] <... set_robust_list resumed>) = 0 [pid 5678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5678] chdir("./47") = 0 [pid 5678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5678] setpgid(0, 0) = 0 [pid 5678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5678] write(3, "1000", 4) = 4 [pid 5678] close(3) = 0 [pid 5678] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5678] write(1, "executing program\n", 18) = 18 [pid 5678] memfd_create("syzkaller", 0) = 3 [pid 5678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5678] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5678] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5678] close(3) = 0 [pid 5678] close(4) = 0 [pid 5678] mkdir("./file1", 0777) = 0 [pid 5678] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5678] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5678] chdir("./file1") = 0 [pid 5678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 142.041166][ T5678] loop0: detected capacity change from 0 to 32768 [pid 5678] exit_group(0) = ? [pid 5678] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5678, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./47/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./47/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file1") = 0 umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5679 attached , child_tidptr=0x5555674776d0) = 5679 [pid 5679] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5679] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5679] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5679] chdir("./48") = 0 [pid 5679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5679] setpgid(0, 0) = 0 [pid 5679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5679] write(3, "1000", 4) = 4 [pid 5679] close(3) = 0 [pid 5679] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5679] write(1, "executing program\n", 18) = 18 [pid 5679] memfd_create("syzkaller", 0) = 3 [pid 5679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5679] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5679] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5679] close(3) = 0 [pid 5679] close(4) = 0 [pid 5679] mkdir("./file1", 0777) = 0 [pid 5679] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5679] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5679] chdir("./file1") = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5679] exit_group(0) = ? [pid 5679] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5679, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./48", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 142.733520][ T5679] loop0: detected capacity change from 0 to 32768 umount2("./48/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./48/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file1") = 0 umount2("./48/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./48") = 0 mkdir("./49", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5680 attached , child_tidptr=0x5555674776d0) = 5680 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5680] set_robust_list(0x5555674776e0, 24) = 0 [pid 5680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5680] chdir("./49") = 0 [pid 5680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5680] setpgid(0, 0) = 0 [pid 5680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5680] write(3, "1000", 4) = 4 [pid 5680] close(3) = 0 [pid 5680] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5680] write(1, "executing program\n", 18) = 18 [pid 5680] memfd_create("syzkaller", 0) = 3 [pid 5680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5680] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5680] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5680] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5680] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5680] close(3) = 0 [pid 5680] close(4) = 0 [pid 5680] mkdir("./file1", 0777) = 0 [pid 5680] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5680] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5680] chdir("./file1") = 0 [pid 5680] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5680] exit_group(0) = ? [pid 5680] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5680, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 143.336989][ T5680] loop0: detected capacity change from 0 to 32768 umount2("./49", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./49/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./49/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file1") = 0 umount2("./49/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./49") = 0 mkdir("./50", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5681 attached , child_tidptr=0x5555674776d0) = 5681 [pid 5681] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5681] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5681] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5681] chdir("./50") = 0 [pid 5681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5681] setpgid(0, 0) = 0 [pid 5681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5681] write(3, "1000", 4) = 4 [pid 5681] close(3) = 0 [pid 5681] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5681] write(1, "executing program\n", 18) = 18 executing program [pid 5681] memfd_create("syzkaller", 0) = 3 [pid 5681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5681] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5681] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5681] close(3) = 0 [pid 5681] close(4) = 0 [pid 5681] mkdir("./file1", 0777) = 0 [pid 5681] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5681] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5681] chdir("./file1") = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5681] exit_group(0) = ? [pid 5681] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5681, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- umount2("./50", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 143.977962][ T5681] loop0: detected capacity change from 0 to 32768 umount2("./50/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./50/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file1") = 0 umount2("./50/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5682 attached , child_tidptr=0x5555674776d0) = 5682 [pid 5682] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5682] chdir("./51") = 0 [pid 5682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5682] setpgid(0, 0) = 0 [pid 5682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5682] write(3, "1000", 4) = 4 [pid 5682] close(3) = 0 [pid 5682] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5682] write(1, "executing program\n", 18) = 18 executing program [pid 5682] memfd_create("syzkaller", 0) = 3 [pid 5682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5682] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5682] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5682] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5682] close(3) = 0 [pid 5682] close(4) = 0 [pid 5682] mkdir("./file1", 0777) = 0 [pid 5682] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5682] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5682] chdir("./file1") = 0 [pid 5682] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5682] exit_group(0) = ? [pid 5682] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5682, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 144.528189][ T5682] loop0: detected capacity change from 0 to 32768 umount2("./51", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./51/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./51/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file1") = 0 umount2("./51/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5683 attached [pid 5683] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5683 [pid 5683] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5683] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5683] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5683] chdir("./52") = 0 [pid 5683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5683] setpgid(0, 0) = 0 [pid 5683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5683] write(3, "1000", 4) = 4 [pid 5683] close(3) = 0 [pid 5683] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5683] write(1, "executing program\n", 18) = 18 executing program [pid 5683] memfd_create("syzkaller", 0) = 3 [pid 5683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5683] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5683] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5683] close(3) = 0 [pid 5683] close(4) = 0 [pid 5683] mkdir("./file1", 0777) = 0 [pid 5683] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5683] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5683] chdir("./file1") = 0 [pid 5683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5683] exit_group(0) = ? [ 145.196072][ T5683] loop0: detected capacity change from 0 to 32768 [pid 5683] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5683, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=18 /* 0.18 s */} --- umount2("./52", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./52/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./52/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file1") = 0 umount2("./52/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./52") = 0 mkdir("./53", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5684 attached , child_tidptr=0x5555674776d0) = 5684 [pid 5684] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5684] chdir("./53") = 0 [pid 5684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5684] setpgid(0, 0) = 0 [pid 5684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5684] write(3, "1000", 4) = 4 [pid 5684] close(3) = 0 [pid 5684] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5684] write(1, "executing program\n", 18) = 18 executing program [pid 5684] memfd_create("syzkaller", 0) = 3 [pid 5684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5684] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5684] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5684] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5684] close(3) = 0 [pid 5684] close(4) = 0 [pid 5684] mkdir("./file1", 0777) = 0 [pid 5684] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5684] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5684] chdir("./file1") = 0 [pid 5684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5684] exit_group(0) = ? [ 145.759945][ T5684] loop0: detected capacity change from 0 to 32768 [pid 5684] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5684, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./53", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./53/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./53/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file1") = 0 umount2("./53/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./53") = 0 mkdir("./54", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5685 attached , child_tidptr=0x5555674776d0) = 5685 [pid 5685] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5685] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5685] chdir("./54") = 0 [pid 5685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5685] setpgid(0, 0) = 0 [pid 5685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5685] write(3, "1000", 4) = 4 [pid 5685] close(3) = 0 [pid 5685] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5685] write(1, "executing program\n", 18) = 18 [pid 5685] memfd_create("syzkaller", 0) = 3 [pid 5685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5685] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5685] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5685] close(3) = 0 [pid 5685] close(4) = 0 [pid 5685] mkdir("./file1", 0777) = 0 [pid 5685] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5685] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5685] chdir("./file1") = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5685] exit_group(0) = ? [pid 5685] +++ exited with 0 +++ [ 146.378003][ T5685] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5685, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- umount2("./54", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./54/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./54/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file1") = 0 umount2("./54/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./54") = 0 mkdir("./55", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5686 attached , child_tidptr=0x5555674776d0) = 5686 [pid 5686] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5686] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5686] chdir("./55") = 0 [pid 5686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5686] setpgid(0, 0) = 0 [pid 5686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5686] write(3, "1000", 4) = 4 [pid 5686] close(3) = 0 [pid 5686] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5686] write(1, "executing program\n", 18) = 18 [pid 5686] memfd_create("syzkaller", 0) = 3 [pid 5686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5686] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5686] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5686] close(3) = 0 [pid 5686] close(4) = 0 [pid 5686] mkdir("./file1", 0777) = 0 [pid 5686] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5686] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5686] chdir("./file1") = 0 [pid 5686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5686] exit_group(0) = ? [ 146.959293][ T5686] loop0: detected capacity change from 0 to 32768 [pid 5686] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5686, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./55", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./55/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./55/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file1") = 0 umount2("./55/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5687 attached , child_tidptr=0x5555674776d0) = 5687 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5687] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5687] <... set_robust_list resumed>) = 0 [pid 5687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5687] chdir("./56") = 0 [pid 5687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5687] setpgid(0, 0) = 0 [pid 5687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5687] write(3, "1000", 4) = 4 [pid 5687] close(3) = 0 [pid 5687] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5687] write(1, "executing program\n", 18) = 18 [pid 5687] memfd_create("syzkaller", 0) = 3 [pid 5687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5687] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5687] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5687] close(3) = 0 [pid 5687] close(4) = 0 [pid 5687] mkdir("./file1", 0777) = 0 [pid 5687] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5687] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5687] chdir("./file1") = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5687] exit_group(0) = ? [pid 5687] +++ exited with 0 +++ [ 147.657058][ T5687] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5687, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./56", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./56/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./56/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file1") = 0 umount2("./56/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./56") = 0 mkdir("./57", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5688 attached [pid 5688] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5688 [pid 5688] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5688] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5688] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5688] chdir("./57") = 0 [pid 5688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5688] setpgid(0, 0) = 0 [pid 5688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5688] write(3, "1000", 4) = 4 [pid 5688] close(3) = 0 [pid 5688] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5688] write(1, "executing program\n", 18) = 18 executing program [pid 5688] memfd_create("syzkaller", 0) = 3 [pid 5688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5688] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5688] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5688] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5688] close(3) = 0 [pid 5688] close(4) = 0 [pid 5688] mkdir("./file1", 0777) = 0 [pid 5688] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5688] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5688] chdir("./file1") = 0 [pid 5688] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5688] exit_group(0) = ? [pid 5688] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5688, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- umount2("./57", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 148.252650][ T5688] loop0: detected capacity change from 0 to 32768 umount2("./57/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./57/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file1") = 0 umount2("./57/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./57") = 0 mkdir("./58", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5689 attached , child_tidptr=0x5555674776d0) = 5689 [pid 5689] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5689] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5689] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5689] chdir("./58") = 0 [pid 5689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5689] setpgid(0, 0) = 0 [pid 5689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5689] write(3, "1000", 4) = 4 [pid 5689] close(3) = 0 [pid 5689] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5689] write(1, "executing program\n", 18) = 18 executing program [pid 5689] memfd_create("syzkaller", 0) = 3 [pid 5689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5689] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5689] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5689] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5689] close(3) = 0 [pid 5689] close(4) = 0 [pid 5689] mkdir("./file1", 0777) = 0 [ 148.835730][ T5689] loop0: detected capacity change from 0 to 32768 [pid 5689] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5689] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5689] chdir("./file1") = 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5689] exit_group(0) = ? [pid 5689] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5689, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./58", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./58/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./58/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file1") = 0 umount2("./58/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./58") = 0 mkdir("./59", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5690 attached , child_tidptr=0x5555674776d0) = 5690 [pid 5690] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5690] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5690] chdir("./59") = 0 [pid 5690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5690] setpgid(0, 0) = 0 [pid 5690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5690] write(3, "1000", 4) = 4 [pid 5690] close(3) = 0 [pid 5690] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5690] write(1, "executing program\n", 18) = 18 executing program [pid 5690] memfd_create("syzkaller", 0) = 3 [pid 5690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5690] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5690] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5690] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5690] close(3) = 0 [pid 5690] close(4) = 0 [pid 5690] mkdir("./file1", 0777) = 0 [pid 5690] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5690] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5690] chdir("./file1") = 0 [pid 5690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5690] exit_group(0) = ? [pid 5690] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5690, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./59", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 149.471707][ T5690] loop0: detected capacity change from 0 to 32768 umount2("./59/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./59/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file1") = 0 umount2("./59/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./59") = 0 mkdir("./60", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5691 attached , child_tidptr=0x5555674776d0) = 5691 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5691] set_robust_list(0x5555674776e0, 24) = 0 [pid 5691] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5691] chdir("./60") = 0 [pid 5691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5691] setpgid(0, 0) = 0 [pid 5691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5691] write(3, "1000", 4) = 4 [pid 5691] close(3) = 0 [pid 5691] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5691] write(1, "executing program\n", 18) = 18 [pid 5691] memfd_create("syzkaller", 0) = 3 [pid 5691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5691] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5691] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5691] close(3) = 0 [pid 5691] close(4) = 0 [pid 5691] mkdir("./file1", 0777) = 0 [pid 5691] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5691] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5691] chdir("./file1") = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5691] exit_group(0) = ? [pid 5691] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5691, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- [ 150.050205][ T5691] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./60", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./60/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./60/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file1") = 0 umount2("./60/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./60") = 0 mkdir("./61", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5692 attached , child_tidptr=0x5555674776d0) = 5692 [pid 5692] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5692] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5692] chdir("./61") = 0 [pid 5692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5692] setpgid(0, 0) = 0 [pid 5692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5692] write(3, "1000", 4) = 4 [pid 5692] close(3) = 0 [pid 5692] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5692] write(1, "executing program\n", 18) = 18 executing program [pid 5692] memfd_create("syzkaller", 0) = 3 [pid 5692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5692] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5692] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5692] close(3) = 0 [pid 5692] close(4) = 0 [pid 5692] mkdir("./file1", 0777) = 0 [pid 5692] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5692] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5692] chdir("./file1") = 0 [pid 5692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5692] exit_group(0) = ? [pid 5692] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5692, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./61", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 150.718822][ T5692] loop0: detected capacity change from 0 to 32768 umount2("./61/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./61/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file1") = 0 umount2("./61/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./61") = 0 mkdir("./62", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5693 attached , child_tidptr=0x5555674776d0) = 5693 [pid 5693] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5693] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5693] chdir("./62") = 0 [pid 5693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5693] setpgid(0, 0) = 0 [pid 5693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5693] write(3, "1000", 4) = 4 [pid 5693] close(3) = 0 [pid 5693] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5693] write(1, "executing program\n", 18) = 18 executing program [pid 5693] memfd_create("syzkaller", 0) = 3 [pid 5693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5693] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5693] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5693] close(3) = 0 [pid 5693] close(4) = 0 [pid 5693] mkdir("./file1", 0777) = 0 [pid 5693] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5693] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5693] chdir("./file1") = 0 [pid 5693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5693] exit_group(0) = ? [pid 5693] +++ exited with 0 +++ [ 151.272798][ T5693] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5693, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} --- umount2("./62", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./62/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./62/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file1") = 0 umount2("./62/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./62") = 0 mkdir("./63", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5694 attached , child_tidptr=0x5555674776d0) = 5694 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5694] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5694] <... set_robust_list resumed>) = 0 [pid 5694] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5694] chdir("./63") = 0 [pid 5694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5694] setpgid(0, 0) = 0 [pid 5694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5694] write(3, "1000", 4) = 4 [pid 5694] close(3) = 0 [pid 5694] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5694] write(1, "executing program\n", 18) = 18 executing program [pid 5694] memfd_create("syzkaller", 0) = 3 [pid 5694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5694] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5694] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5694] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5694] close(3) = 0 [pid 5694] close(4) = 0 [pid 5694] mkdir("./file1", 0777) = 0 [pid 5694] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5694] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5694] chdir("./file1") = 0 [pid 5694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5694] exit_group(0) = ? [pid 5694] +++ exited with 0 +++ [ 151.821132][ T5694] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5694, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./63", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./63/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./63/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./63/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file1") = 0 umount2("./63/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./63/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./63") = 0 mkdir("./64", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5695 attached , child_tidptr=0x5555674776d0) = 5695 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5695] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5695] <... set_robust_list resumed>) = 0 [pid 5695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5695] chdir("./64") = 0 [pid 5695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5695] setpgid(0, 0) = 0 [pid 5695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5695] write(3, "1000", 4) = 4 [pid 5695] close(3) = 0 [pid 5695] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5695] write(1, "executing program\n", 18) = 18 [pid 5695] memfd_create("syzkaller", 0) = 3 [pid 5695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5695] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5695] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5695] close(3) = 0 [pid 5695] close(4) = 0 [pid 5695] mkdir("./file1", 0777) = 0 [pid 5695] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5695] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5695] chdir("./file1") = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5695] exit_group(0) = ? [pid 5695] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5695, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./64", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 152.442491][ T5695] loop0: detected capacity change from 0 to 32768 umount2("./64/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./64/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./64/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file1") = 0 umount2("./64/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./64/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5696 attached , child_tidptr=0x5555674776d0) = 5696 [pid 5696] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5696] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5696] chdir("./65") = 0 [pid 5696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5696] setpgid(0, 0) = 0 [pid 5696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5696] write(3, "1000", 4) = 4 [pid 5696] close(3) = 0 [pid 5696] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5696] write(1, "executing program\n", 18) = 18 executing program [pid 5696] memfd_create("syzkaller", 0) = 3 [pid 5696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5696] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5696] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5696] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5696] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5696] close(3) = 0 [pid 5696] close(4) = 0 [pid 5696] mkdir("./file1", 0777) = 0 [pid 5696] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5696] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5696] chdir("./file1") = 0 [ 153.000662][ T5696] loop0: detected capacity change from 0 to 32768 [pid 5696] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5696] exit_group(0) = ? [pid 5696] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5696, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- umount2("./65", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./65/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./65/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./65/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file1") = 0 umount2("./65/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./65/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./65") = 0 mkdir("./66", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5697 attached , child_tidptr=0x5555674776d0) = 5697 [pid 5697] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5697] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5697] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5697] chdir("./66") = 0 [pid 5697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5697] setpgid(0, 0) = 0 [pid 5697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5697] write(3, "1000", 4) = 4 [pid 5697] close(3) = 0 [pid 5697] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5697] write(1, "executing program\n", 18) = 18 executing program [pid 5697] memfd_create("syzkaller", 0) = 3 [pid 5697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5697] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5697] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5697] close(3) = 0 [pid 5697] close(4) = 0 [pid 5697] mkdir("./file1", 0777) = 0 [pid 5697] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5697] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5697] chdir("./file1") = 0 [ 153.809783][ T5697] loop0: detected capacity change from 0 to 32768 [pid 5697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5697] exit_group(0) = ? [pid 5697] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5697, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./66", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./66/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./66/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./66/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file1") = 0 umount2("./66/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./66/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./66") = 0 mkdir("./67", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5698 attached , child_tidptr=0x5555674776d0) = 5698 [pid 5698] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5698] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5698] chdir("./67") = 0 [pid 5698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5698] setpgid(0, 0) = 0 [pid 5698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5698] write(3, "1000", 4) = 4 [pid 5698] close(3) = 0 [pid 5698] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5698] write(1, "executing program\n", 18) = 18 executing program [pid 5698] memfd_create("syzkaller", 0) = 3 [pid 5698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5698] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5698] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5698] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5698] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5698] close(3) = 0 [pid 5698] close(4) = 0 [pid 5698] mkdir("./file1", 0777) = 0 [pid 5698] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5698] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5698] chdir("./file1") = 0 [pid 5698] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5698] exit_group(0) = ? [pid 5698] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5698, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./67", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 154.383297][ T5698] loop0: detected capacity change from 0 to 32768 umount2("./67/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./67/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./67/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file1") = 0 umount2("./67/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./67/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./67") = 0 mkdir("./68", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5699 attached , child_tidptr=0x5555674776d0) = 5699 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5699] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5699] <... set_robust_list resumed>) = 0 [pid 5699] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5699] chdir("./68") = 0 [pid 5699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5699] setpgid(0, 0) = 0 [pid 5699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5699] write(3, "1000", 4) = 4 [pid 5699] close(3) = 0 [pid 5699] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5699] write(1, "executing program\n", 18) = 18 [pid 5699] memfd_create("syzkaller", 0) = 3 [pid 5699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5699] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5699] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5699] close(3) = 0 [pid 5699] close(4) = 0 [pid 5699] mkdir("./file1", 0777) = 0 [pid 5699] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 154.988170][ T5699] loop0: detected capacity change from 0 to 32768 [pid 5699] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5699] chdir("./file1") = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5699] exit_group(0) = ? [pid 5699] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5699, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./68", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./68/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./68/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./68/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file1") = 0 umount2("./68/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./68/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./68") = 0 mkdir("./69", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5700 attached , child_tidptr=0x5555674776d0) = 5700 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5700] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5700] <... set_robust_list resumed>) = 0 [pid 5700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5700] chdir("./69") = 0 [pid 5700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5700] setpgid(0, 0) = 0 [pid 5700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5700] write(3, "1000", 4) = 4 [pid 5700] close(3) = 0 [pid 5700] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5700] write(1, "executing program\n", 18) = 18 [pid 5700] memfd_create("syzkaller", 0) = 3 [pid 5700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5700] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5700] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5700] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5700] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5700] close(3) = 0 [pid 5700] close(4) = 0 [pid 5700] mkdir("./file1", 0777) = 0 [pid 5700] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5700] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5700] chdir("./file1") = 0 [pid 5700] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5700] exit_group(0) = ? [pid 5700] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5700, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- [ 155.675965][ T5700] loop0: detected capacity change from 0 to 32768 umount2("./69", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./69/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./69/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./69/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file1") = 0 umount2("./69/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./69/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./69") = 0 mkdir("./70", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5701 attached , child_tidptr=0x5555674776d0) = 5701 [pid 5701] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5701] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5701] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5701] chdir("./70") = 0 [pid 5701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5701] setpgid(0, 0) = 0 [pid 5701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5701] write(3, "1000", 4) = 4 [pid 5701] close(3) = 0 [pid 5701] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5701] write(1, "executing program\n", 18) = 18 executing program [pid 5701] memfd_create("syzkaller", 0) = 3 [pid 5701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5701] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5701] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5701] close(3) = 0 [pid 5701] close(4) = 0 [pid 5701] mkdir("./file1", 0777) = 0 [pid 5701] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5701] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5701] chdir("./file1") = 0 [pid 5701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5701] exit_group(0) = ? [pid 5701] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5701, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- [ 156.280702][ T5701] loop0: detected capacity change from 0 to 32768 umount2("./70", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./70/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./70/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./70/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file1") = 0 umount2("./70/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./70/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./70") = 0 mkdir("./71", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5702 attached , child_tidptr=0x5555674776d0) = 5702 [pid 5702] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5702] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5702] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5702] chdir("./71") = 0 [pid 5702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5702] setpgid(0, 0) = 0 [pid 5702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5702] write(3, "1000", 4) = 4 [pid 5702] close(3) = 0 [pid 5702] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5702] write(1, "executing program\n", 18) = 18 executing program [pid 5702] memfd_create("syzkaller", 0) = 3 [pid 5702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5702] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5702] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5702] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5702] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5702] close(3) = 0 [pid 5702] close(4) = 0 [pid 5702] mkdir("./file1", 0777) = 0 [pid 5702] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5702] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5702] chdir("./file1") = 0 [pid 5702] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5702] exit_group(0) = ? [pid 5702] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5702, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./71", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 156.838201][ T5702] loop0: detected capacity change from 0 to 32768 umount2("./71/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./71/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./71/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file1") = 0 umount2("./71/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./71/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./71") = 0 mkdir("./72", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5703 attached , child_tidptr=0x5555674776d0) = 5703 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5703] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5703] <... set_robust_list resumed>) = 0 [pid 5703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5703] chdir("./72") = 0 [pid 5703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5703] setpgid(0, 0) = 0 [pid 5703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5703] write(3, "1000", 4) = 4 [pid 5703] close(3) = 0 [pid 5703] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5703] write(1, "executing program\n", 18) = 18 executing program [pid 5703] memfd_create("syzkaller", 0) = 3 [pid 5703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5703] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5703] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5703] close(3) = 0 [pid 5703] close(4) = 0 [pid 5703] mkdir("./file1", 0777) = 0 [pid 5703] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5703] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5703] chdir("./file1") = 0 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5703] exit_group(0) = ? [ 157.390424][ T5703] loop0: detected capacity change from 0 to 32768 [pid 5703] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5703, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- umount2("./72", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./72/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./72/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./72/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file1") = 0 umount2("./72/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./72/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./72") = 0 mkdir("./73", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5704 attached , child_tidptr=0x5555674776d0) = 5704 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5704] set_robust_list(0x5555674776e0, 24) = 0 [pid 5704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5704] chdir("./73") = 0 [pid 5704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5704] setpgid(0, 0) = 0 [pid 5704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5704] write(3, "1000", 4) = 4 [pid 5704] close(3) = 0 [pid 5704] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5704] write(1, "executing program\n", 18) = 18 [pid 5704] memfd_create("syzkaller", 0) = 3 [pid 5704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5704] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5704] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5704] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5704] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5704] close(3) = 0 [pid 5704] close(4) = 0 [pid 5704] mkdir("./file1", 0777) = 0 [pid 5704] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5704] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5704] chdir("./file1") = 0 [pid 5704] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5704] exit_group(0) = ? [pid 5704] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5704, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 157.964842][ T5704] loop0: detected capacity change from 0 to 32768 umount2("./73", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./73/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./73/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./73/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file1") = 0 umount2("./73/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./73/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./73") = 0 mkdir("./74", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5705 attached , child_tidptr=0x5555674776d0) = 5705 [pid 5705] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5705] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5705] chdir("./74") = 0 [pid 5705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5705] setpgid(0, 0) = 0 [pid 5705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5705] write(3, "1000", 4) = 4 [pid 5705] close(3) = 0 [pid 5705] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5705] write(1, "executing program\n", 18) = 18 [pid 5705] memfd_create("syzkaller", 0) = 3 [pid 5705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5705] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5705] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5705] close(3) = 0 [pid 5705] close(4) = 0 [pid 5705] mkdir("./file1", 0777) = 0 [pid 5705] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5705] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 158.540333][ T5705] loop0: detected capacity change from 0 to 32768 [pid 5705] chdir("./file1") = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5705] exit_group(0) = ? [pid 5705] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5705, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./74", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./74/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./74/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./74/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file1") = 0 umount2("./74/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./74/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./74") = 0 mkdir("./75", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5706 attached , child_tidptr=0x5555674776d0) = 5706 [pid 5706] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5706] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5706] chdir("./75") = 0 [pid 5706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5706] setpgid(0, 0) = 0 [pid 5706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5706] write(3, "1000", 4) = 4 [pid 5706] close(3) = 0 [pid 5706] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5706] write(1, "executing program\n", 18) = 18 [pid 5706] memfd_create("syzkaller", 0) = 3 [pid 5706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5706] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5706] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5706] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5706] close(3) = 0 [pid 5706] close(4) = 0 [pid 5706] mkdir("./file1", 0777) = 0 [pid 5706] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5706] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5706] chdir("./file1") = 0 [pid 5706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5706] exit_group(0) = ? [pid 5706] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5706, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- umount2("./75", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 159.215331][ T5706] loop0: detected capacity change from 0 to 32768 umount2("./75/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./75/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./75/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file1") = 0 umount2("./75/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./75/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./75") = 0 mkdir("./76", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5707 attached , child_tidptr=0x5555674776d0) = 5707 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5707] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5707] chdir("./76") = 0 [pid 5707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5707] setpgid(0, 0) = 0 [pid 5707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5707] write(3, "1000", 4) = 4 [pid 5707] close(3) = 0 [pid 5707] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5707] write(1, "executing program\n", 18) = 18 [pid 5707] memfd_create("syzkaller", 0) = 3 [pid 5707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5707] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5707] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5707] close(3) = 0 [pid 5707] close(4) = 0 [pid 5707] mkdir("./file1", 0777) = 0 [pid 5707] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5707] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5707] chdir("./file1") = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5707] exit_group(0) = ? [pid 5707] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5707, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./76", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 159.885760][ T5707] loop0: detected capacity change from 0 to 32768 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./76/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./76/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./76/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file1") = 0 umount2("./76/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./76/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./76") = 0 mkdir("./77", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5708 attached , child_tidptr=0x5555674776d0) = 5708 [pid 5708] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5708] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5708] chdir("./77") = 0 [pid 5708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5708] setpgid(0, 0) = 0 [pid 5708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5708] write(3, "1000", 4) = 4 [pid 5708] close(3) = 0 [pid 5708] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5708] write(1, "executing program\n", 18) = 18 executing program [pid 5708] memfd_create("syzkaller", 0) = 3 [pid 5708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5708] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5708] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5708] close(3) = 0 [pid 5708] close(4) = 0 [pid 5708] mkdir("./file1", 0777) = 0 [pid 5708] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5708] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5708] chdir("./file1") = 0 [pid 5708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5708] exit_group(0) = ? [ 160.498608][ T5708] loop0: detected capacity change from 0 to 32768 [pid 5708] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5708, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./77", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./77/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./77/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./77/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file1") = 0 umount2("./77/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./77/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./77") = 0 mkdir("./78", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5709 attached , child_tidptr=0x5555674776d0) = 5709 [pid 5709] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5709] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5709] chdir("./78") = 0 [pid 5709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5709] setpgid(0, 0) = 0 [pid 5709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5709] write(3, "1000", 4) = 4 [pid 5709] close(3) = 0 [pid 5709] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5709] write(1, "executing program\n", 18) = 18 [pid 5709] memfd_create("syzkaller", 0) = 3 [pid 5709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5709] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5709] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5709] close(3) = 0 [pid 5709] close(4) = 0 [pid 5709] mkdir("./file1", 0777) = 0 [pid 5709] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5709] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5709] chdir("./file1") = 0 [pid 5709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5709] exit_group(0) = ? [pid 5709] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5709, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- [ 161.135588][ T5709] loop0: detected capacity change from 0 to 32768 umount2("./78", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./78/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./78/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./78/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file1") = 0 umount2("./78/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./78/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./78") = 0 mkdir("./79", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5710 attached , child_tidptr=0x5555674776d0) = 5710 [pid 5710] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5710] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5710] chdir("./79") = 0 [pid 5710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5710] setpgid(0, 0) = 0 [pid 5710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5710] write(3, "1000", 4) = 4 [pid 5710] close(3) = 0 [pid 5710] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5710] write(1, "executing program\n", 18) = 18 [pid 5710] memfd_create("syzkaller", 0) = 3 [pid 5710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5710] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5710] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5710] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5710] close(3) = 0 [pid 5710] close(4) = 0 [pid 5710] mkdir("./file1", 0777) = 0 [pid 5710] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5710] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5710] chdir("./file1") = 0 [pid 5710] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5710] exit_group(0) = ? [pid 5710] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5710, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./79", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 161.723039][ T5710] loop0: detected capacity change from 0 to 32768 umount2("./79/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./79/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./79/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file1") = 0 umount2("./79/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./79/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./79") = 0 mkdir("./80", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5711 attached , child_tidptr=0x5555674776d0) = 5711 [pid 5711] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5711] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5711] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5711] chdir("./80") = 0 [pid 5711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5711] setpgid(0, 0) = 0 [pid 5711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5711] write(3, "1000", 4) = 4 [pid 5711] close(3) = 0 [pid 5711] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5711] write(1, "executing program\n", 18) = 18 [pid 5711] memfd_create("syzkaller", 0) = 3 [pid 5711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5711] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5711] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5711] close(3) = 0 [pid 5711] close(4) = 0 [pid 5711] mkdir("./file1", 0777) = 0 [pid 5711] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5711] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5711] chdir("./file1") = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5711] exit_group(0) = ? [pid 5711] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5711, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- [ 162.264429][ T5711] loop0: detected capacity change from 0 to 32768 umount2("./80", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./80/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./80/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./80/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file1") = 0 umount2("./80/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./80/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./80") = 0 mkdir("./81", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5712 attached , child_tidptr=0x5555674776d0) = 5712 [pid 5712] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5712] chdir("./81") = 0 [pid 5712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5712] setpgid(0, 0) = 0 [pid 5712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5712] write(3, "1000", 4) = 4 [pid 5712] close(3) = 0 [pid 5712] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5712] write(1, "executing program\n", 18) = 18 executing program [pid 5712] memfd_create("syzkaller", 0) = 3 [pid 5712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5712] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5712] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5712] close(3) = 0 [pid 5712] close(4) = 0 [pid 5712] mkdir("./file1", 0777) = 0 [pid 5712] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5712] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5712] chdir("./file1") = 0 [pid 5712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5712] exit_group(0) = ? [pid 5712] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5712, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [ 162.903705][ T5712] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./81", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./81/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./81/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./81/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file1") = 0 umount2("./81/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./81/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./81") = 0 mkdir("./82", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5713 attached , child_tidptr=0x5555674776d0) = 5713 [pid 5713] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5713] <... set_robust_list resumed>) = 0 [pid 5713] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5713] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5713] chdir("./82") = 0 [pid 5713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5713] setpgid(0, 0) = 0 [pid 5713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5713] write(3, "1000", 4) = 4 [pid 5713] close(3) = 0 [pid 5713] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5713] write(1, "executing program\n", 18) = 18 executing program [pid 5713] memfd_create("syzkaller", 0) = 3 [pid 5713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5713] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5713] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5713] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5713] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5713] close(3) = 0 [pid 5713] close(4) = 0 [pid 5713] mkdir("./file1", 0777) = 0 [pid 5713] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5713] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5713] chdir("./file1") = 0 [pid 5713] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5713] exit_group(0) = ? [pid 5713] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5713, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./82", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 163.558027][ T5713] loop0: detected capacity change from 0 to 32768 umount2("./82/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./82/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./82/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file1") = 0 umount2("./82/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./82/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./82") = 0 mkdir("./83", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5714 attached , child_tidptr=0x5555674776d0) = 5714 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5714] set_robust_list(0x5555674776e0, 24) = 0 [pid 5714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5714] chdir("./83") = 0 [pid 5714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5714] setpgid(0, 0) = 0 [pid 5714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5714] write(3, "1000", 4) = 4 [pid 5714] close(3) = 0 [pid 5714] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5714] write(1, "executing program\n", 18) = 18 [pid 5714] memfd_create("syzkaller", 0) = 3 [pid 5714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5714] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5714] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5714] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5714] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5714] close(3) = 0 [pid 5714] close(4) = 0 [pid 5714] mkdir("./file1", 0777) = 0 [pid 5714] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5714] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5714] chdir("./file1") = 0 [pid 5714] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5714] exit_group(0) = ? [pid 5714] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5714, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./83", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 164.121067][ T5714] loop0: detected capacity change from 0 to 32768 umount2("./83/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./83/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./83/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file1") = 0 umount2("./83/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./83/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./83") = 0 mkdir("./84", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5715 attached , child_tidptr=0x5555674776d0) = 5715 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5715] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5715] <... set_robust_list resumed>) = 0 [pid 5715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5715] chdir("./84") = 0 [pid 5715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5715] setpgid(0, 0) = 0 [pid 5715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5715] write(3, "1000", 4) = 4 [pid 5715] close(3) = 0 [pid 5715] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5715] write(1, "executing program\n", 18) = 18 [pid 5715] memfd_create("syzkaller", 0) = 3 [pid 5715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5715] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5715] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5715] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5715] close(3) = 0 [pid 5715] close(4) = 0 [pid 5715] mkdir("./file1", 0777) = 0 [pid 5715] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5715] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5715] chdir("./file1") = 0 [pid 5715] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5715] exit_group(0) = ? [pid 5715] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5715, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./84", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 164.663502][ T5715] loop0: detected capacity change from 0 to 32768 umount2("./84/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./84/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./84/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file1") = 0 umount2("./84/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./84/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./84") = 0 mkdir("./85", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5716 attached , child_tidptr=0x5555674776d0) = 5716 [pid 5716] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5716] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5716] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5716] chdir("./85") = 0 [pid 5716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5716] setpgid(0, 0) = 0 [pid 5716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5716] write(3, "1000", 4) = 4 [pid 5716] close(3) = 0 [pid 5716] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5716] write(1, "executing program\n", 18) = 18 [pid 5716] memfd_create("syzkaller", 0) = 3 [pid 5716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5716] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5716] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5716] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5716] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5716] close(3) = 0 [pid 5716] close(4) = 0 [pid 5716] mkdir("./file1", 0777) = 0 [pid 5716] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5716] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5716] chdir("./file1") = 0 [pid 5716] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5716] exit_group(0) = ? [pid 5716] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5716, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./85", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 165.240080][ T5716] loop0: detected capacity change from 0 to 32768 umount2("./85/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./85/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./85/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file1") = 0 umount2("./85/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./85/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./85") = 0 mkdir("./86", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5717 attached , child_tidptr=0x5555674776d0) = 5717 [pid 5717] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5717] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5717] chdir("./86") = 0 [pid 5717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5717] setpgid(0, 0) = 0 [pid 5717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5717] write(3, "1000", 4) = 4 [pid 5717] close(3) = 0 [pid 5717] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5717] write(1, "executing program\n", 18) = 18 [pid 5717] memfd_create("syzkaller", 0) = 3 [pid 5717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5717] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5717] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5717] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5717] close(3) = 0 [pid 5717] close(4) = 0 [pid 5717] mkdir("./file1", 0777) = 0 [pid 5717] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5717] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5717] chdir("./file1") = 0 [pid 5717] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5717] exit_group(0) = ? [pid 5717] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5717, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./86", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 165.903655][ T5717] loop0: detected capacity change from 0 to 32768 umount2("./86/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./86/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./86/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file1") = 0 umount2("./86/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./86/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./86") = 0 mkdir("./87", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5718 attached , child_tidptr=0x5555674776d0) = 5718 [pid 5718] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5718] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5718] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5718] chdir("./87") = 0 [pid 5718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5718] setpgid(0, 0) = 0 [pid 5718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5718] write(3, "1000", 4) = 4 [pid 5718] close(3) = 0 [pid 5718] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5718] write(1, "executing program\n", 18) = 18 [pid 5718] memfd_create("syzkaller", 0) = 3 [pid 5718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5718] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5718] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5718] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5718] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5718] close(3) = 0 [pid 5718] close(4) = 0 [pid 5718] mkdir("./file1", 0777) = 0 [pid 5718] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5718] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5718] chdir("./file1") = 0 [ 166.491760][ T5718] loop0: detected capacity change from 0 to 32768 [pid 5718] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5718] exit_group(0) = ? [pid 5718] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5718, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./87", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./87/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./87/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./87/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file1") = 0 umount2("./87/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./87/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./87") = 0 mkdir("./88", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5719 attached , child_tidptr=0x5555674776d0) = 5719 [pid 5719] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5719] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5719] chdir("./88") = 0 [pid 5719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5719] setpgid(0, 0) = 0 [pid 5719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5719] write(3, "1000", 4) = 4 [pid 5719] close(3) = 0 [pid 5719] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5719] write(1, "executing program\n", 18) = 18 executing program [pid 5719] memfd_create("syzkaller", 0) = 3 [pid 5719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5719] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5719] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5719] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5719] close(3) = 0 [pid 5719] close(4) = 0 [pid 5719] mkdir("./file1", 0777) = 0 [pid 5719] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5719] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5719] chdir("./file1") = 0 [pid 5719] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5719] exit_group(0) = ? [ 167.173195][ T5719] loop0: detected capacity change from 0 to 32768 [pid 5719] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5719, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./88", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./88/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./88/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./88/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file1") = 0 umount2("./88/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./88/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./88") = 0 mkdir("./89", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5720 attached , child_tidptr=0x5555674776d0) = 5720 [pid 5720] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5720] <... set_robust_list resumed>) = 0 [pid 5720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5720] chdir("./89") = 0 [pid 5720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5720] setpgid(0, 0) = 0 [pid 5720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5720] write(3, "1000", 4) = 4 [pid 5720] close(3) = 0 [pid 5720] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5720] write(1, "executing program\n", 18) = 18 [pid 5720] memfd_create("syzkaller", 0) = 3 [pid 5720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5720] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5720] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5720] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5720] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5720] close(3) = 0 [pid 5720] close(4) = 0 [pid 5720] mkdir("./file1", 0777) = 0 [pid 5720] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5720] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5720] chdir("./file1") = 0 [pid 5720] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5720] exit_group(0) = ? [pid 5720] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5720, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=14 /* 0.14 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./89", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 167.785737][ T5720] loop0: detected capacity change from 0 to 32768 umount2("./89/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./89/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./89/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file1") = 0 umount2("./89/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./89/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./89") = 0 mkdir("./90", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5721 attached , child_tidptr=0x5555674776d0) = 5721 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5721] set_robust_list(0x5555674776e0, 24) = 0 [pid 5721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5721] chdir("./90") = 0 [pid 5721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5721] setpgid(0, 0) = 0 [pid 5721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5721] write(3, "1000", 4) = 4 [pid 5721] close(3) = 0 [pid 5721] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5721] write(1, "executing program\n", 18) = 18 executing program [pid 5721] memfd_create("syzkaller", 0) = 3 [pid 5721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5721] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5721] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5721] close(3) = 0 [pid 5721] close(4) = 0 [pid 5721] mkdir("./file1", 0777) = 0 [pid 5721] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5721] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5721] chdir("./file1") = 0 [pid 5721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5721] exit_group(0) = ? [pid 5721] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5721, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./90", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 168.497526][ T5721] loop0: detected capacity change from 0 to 32768 umount2("./90/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./90/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./90/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file1") = 0 umount2("./90/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./90/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./90") = 0 mkdir("./91", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5722 attached , child_tidptr=0x5555674776d0) = 5722 [pid 5722] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5722] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5722] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5722] chdir("./91") = 0 [pid 5722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5722] setpgid(0, 0) = 0 [pid 5722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5722] write(3, "1000", 4) = 4 [pid 5722] close(3) = 0 [pid 5722] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5722] write(1, "executing program\n", 18) = 18 [pid 5722] memfd_create("syzkaller", 0) = 3 [pid 5722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5722] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5722] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5722] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5722] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5722] close(3) = 0 [pid 5722] close(4) = 0 [pid 5722] mkdir("./file1", 0777) = 0 [pid 5722] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5722] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 169.104936][ T5722] loop0: detected capacity change from 0 to 32768 [pid 5722] chdir("./file1") = 0 [pid 5722] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5722] exit_group(0) = ? [pid 5722] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5722, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./91", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./91/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./91/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./91/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file1") = 0 umount2("./91/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./91/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./91") = 0 mkdir("./92", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5723 attached , child_tidptr=0x5555674776d0) = 5723 [pid 5723] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5723] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5723] chdir("./92") = 0 [pid 5723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5723] setpgid(0, 0) = 0 [pid 5723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5723] write(3, "1000", 4) = 4 [pid 5723] close(3) = 0 [pid 5723] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5723] write(1, "executing program\n", 18) = 18 executing program [pid 5723] memfd_create("syzkaller", 0) = 3 [pid 5723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5723] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5723] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5723] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5723] close(3) = 0 [pid 5723] close(4) = 0 [pid 5723] mkdir("./file1", 0777) = 0 [pid 5723] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5723] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5723] chdir("./file1") = 0 [pid 5723] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5723] exit_group(0) = ? [pid 5723] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5723, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 169.748219][ T5723] loop0: detected capacity change from 0 to 32768 umount2("./92", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./92/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./92/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./92/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file1") = 0 umount2("./92/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./92/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./92") = 0 mkdir("./93", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5724 attached , child_tidptr=0x5555674776d0) = 5724 [pid 5724] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5724] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5724] chdir("./93") = 0 [pid 5724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5724] setpgid(0, 0) = 0 [pid 5724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5724] write(3, "1000", 4) = 4 [pid 5724] close(3) = 0 [pid 5724] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5724] write(1, "executing program\n", 18) = 18 [pid 5724] memfd_create("syzkaller", 0) = 3 [pid 5724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5724] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5724] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5724] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5724] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5724] close(3) = 0 [pid 5724] close(4) = 0 [pid 5724] mkdir("./file1", 0777) = 0 [pid 5724] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5724] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5724] chdir("./file1") = 0 [pid 5724] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5724] exit_group(0) = ? [pid 5724] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5724, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./93", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 170.328278][ T5724] loop0: detected capacity change from 0 to 32768 openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./93/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./93/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./93/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file1") = 0 umount2("./93/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./93/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./93") = 0 mkdir("./94", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5725 attached , child_tidptr=0x5555674776d0) = 5725 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5725] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5725] <... set_robust_list resumed>) = 0 [pid 5725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5725] chdir("./94") = 0 [pid 5725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5725] setpgid(0, 0) = 0 [pid 5725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5725] write(3, "1000", 4) = 4 [pid 5725] close(3) = 0 [pid 5725] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5725] write(1, "executing program\n", 18) = 18 executing program [pid 5725] memfd_create("syzkaller", 0) = 3 [pid 5725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5725] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5725] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5725] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5725] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5725] close(3) = 0 [pid 5725] close(4) = 0 [pid 5725] mkdir("./file1", 0777) = 0 [pid 5725] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5725] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5725] chdir("./file1") = 0 [pid 5725] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5725] exit_group(0) = ? [pid 5725] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5725, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 170.900828][ T5725] loop0: detected capacity change from 0 to 32768 umount2("./94", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./94/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./94/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./94/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file1") = 0 umount2("./94/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./94/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./94") = 0 mkdir("./95", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5726 attached , child_tidptr=0x5555674776d0) = 5726 [pid 5726] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5726] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5726] chdir("./95") = 0 [pid 5726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5726] setpgid(0, 0) = 0 [pid 5726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5726] write(3, "1000", 4) = 4 [pid 5726] close(3) = 0 [pid 5726] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5726] write(1, "executing program\n", 18) = 18 executing program [pid 5726] memfd_create("syzkaller", 0) = 3 [pid 5726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5726] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5726] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5726] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5726] close(3) = 0 [pid 5726] close(4) = 0 [pid 5726] mkdir("./file1", 0777) = 0 [pid 5726] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5726] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5726] chdir("./file1") = 0 [pid 5726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5726] exit_group(0) = ? [pid 5726] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5726, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [ 171.481116][ T5726] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./95", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./95/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./95/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./95/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./95/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file1") = 0 umount2("./95/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./95/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./95") = 0 mkdir("./96", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5727 attached , child_tidptr=0x5555674776d0) = 5727 [pid 5727] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5727] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5727] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5727] chdir("./96") = 0 [pid 5727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5727] setpgid(0, 0) = 0 [pid 5727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5727] write(3, "1000", 4) = 4 [pid 5727] close(3) = 0 [pid 5727] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5727] write(1, "executing program\n", 18) = 18 [pid 5727] memfd_create("syzkaller", 0) = 3 [pid 5727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5727] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5727] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5727] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5727] close(3) = 0 [pid 5727] close(4) = 0 [pid 5727] mkdir("./file1", 0777) = 0 [pid 5727] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5727] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5727] chdir("./file1") = 0 [pid 5727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5727] exit_group(0) = ? [pid 5727] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5727, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./96", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 172.120406][ T5727] loop0: detected capacity change from 0 to 32768 umount2("./96/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./96/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./96/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./96/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file1") = 0 umount2("./96/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./96/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./96") = 0 mkdir("./97", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555674776d0) = 5728 ci2-upstream-fs/strace-static-x86_64: Process 5728 attached [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5728] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5728] <... set_robust_list resumed>) = 0 [pid 5728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5728] chdir("./97") = 0 [pid 5728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5728] setpgid(0, 0) = 0 [pid 5728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5728] write(3, "1000", 4) = 4 [pid 5728] close(3) = 0 [pid 5728] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5728] write(1, "executing program\n", 18) = 18 executing program [pid 5728] memfd_create("syzkaller", 0) = 3 [pid 5728] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5728] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5728] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5728] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5728] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5728] close(3) = 0 [pid 5728] close(4) = 0 [pid 5728] mkdir("./file1", 0777) = 0 [pid 5728] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5728] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5728] chdir("./file1") = 0 [pid 5728] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5728] exit_group(0) = ? [ 172.708206][ T5728] loop0: detected capacity change from 0 to 32768 [pid 5728] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5728, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./97", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./97/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./97/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./97/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./97/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./97/file1") = 0 umount2("./97/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./97/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./97") = 0 mkdir("./98", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5729 attached , child_tidptr=0x5555674776d0) = 5729 [pid 5729] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5729] chdir("./98") = 0 [pid 5729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5729] setpgid(0, 0) = 0 [pid 5729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5729] write(3, "1000", 4) = 4 [pid 5729] close(3) = 0 [pid 5729] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5729] write(1, "executing program\n", 18) = 18 [pid 5729] memfd_create("syzkaller", 0) = 3 [pid 5729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5729] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5729] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5729] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5729] close(3) = 0 [pid 5729] close(4) = 0 [pid 5729] mkdir("./file1", 0777) = 0 [pid 5729] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5729] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5729] chdir("./file1") = 0 [pid 5729] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5729] exit_group(0) = ? [pid 5729] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5729, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./98", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 173.404686][ T5729] loop0: detected capacity change from 0 to 32768 umount2("./98/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./98/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./98/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./98/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file1") = 0 umount2("./98/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./98/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./98") = 0 mkdir("./99", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5730 attached , child_tidptr=0x5555674776d0) = 5730 [pid 5730] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5730] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5730] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5730] chdir("./99") = 0 [pid 5730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5730] setpgid(0, 0) = 0 [pid 5730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5730] write(3, "1000", 4) = 4 [pid 5730] close(3) = 0 [pid 5730] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5730] write(1, "executing program\n", 18) = 18 [pid 5730] memfd_create("syzkaller", 0) = 3 [pid 5730] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5730] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5730] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5730] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5730] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5730] close(3) = 0 [pid 5730] close(4) = 0 [pid 5730] mkdir("./file1", 0777) = 0 [pid 5730] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5730] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5730] chdir("./file1") = 0 [ 173.916328][ T5730] loop0: detected capacity change from 0 to 32768 [pid 5730] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5730] exit_group(0) = ? [pid 5730] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5730, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- umount2("./99", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./99/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./99/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./99/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./99/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file1") = 0 umount2("./99/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./99/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./99") = 0 mkdir("./100", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5731 attached , child_tidptr=0x5555674776d0) = 5731 [pid 5731] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5731] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5731] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5731] chdir("./100") = 0 [pid 5731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5731] setpgid(0, 0) = 0 [pid 5731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5731] write(3, "1000", 4) = 4 [pid 5731] close(3) = 0 [pid 5731] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5731] write(1, "executing program\n", 18) = 18 [pid 5731] memfd_create("syzkaller", 0) = 3 [pid 5731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5731] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5731] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5731] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5731] close(3) = 0 [pid 5731] close(4) = 0 [pid 5731] mkdir("./file1", 0777) = 0 [pid 5731] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5731] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5731] chdir("./file1") = 0 [pid 5731] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5731] exit_group(0) = ? [pid 5731] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5731, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 174.693924][ T5731] loop0: detected capacity change from 0 to 32768 umount2("./100", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./100/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./100/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./100/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./100/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./100/file1") = 0 umount2("./100/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./100/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./100") = 0 mkdir("./101", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5732 attached , child_tidptr=0x5555674776d0) = 5732 [pid 5732] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5732] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5732] chdir("./101") = 0 [pid 5732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5732] setpgid(0, 0) = 0 [pid 5732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5732] write(3, "1000", 4) = 4 [pid 5732] close(3) = 0 [pid 5732] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5732] write(1, "executing program\n", 18) = 18 [pid 5732] memfd_create("syzkaller", 0) = 3 [pid 5732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5732] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5732] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5732] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5732] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5732] close(3) = 0 [pid 5732] close(4) = 0 [pid 5732] mkdir("./file1", 0777) = 0 [pid 5732] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5732] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5732] chdir("./file1") = 0 [pid 5732] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5732] exit_group(0) = ? [pid 5732] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5732, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} --- [ 175.253321][ T5732] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./101", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./101/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./101/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./101/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./101/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./101/file1") = 0 umount2("./101/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./101/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./101") = 0 mkdir("./102", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5733 attached , child_tidptr=0x5555674776d0) = 5733 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5733] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5733] <... set_robust_list resumed>) = 0 [pid 5733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5733] chdir("./102") = 0 [pid 5733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5733] setpgid(0, 0) = 0 [pid 5733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5733] write(3, "1000", 4) = 4 [pid 5733] close(3) = 0 [pid 5733] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5733] write(1, "executing program\n", 18) = 18 [pid 5733] memfd_create("syzkaller", 0) = 3 [pid 5733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5733] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5733] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5733] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5733] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5733] close(3) = 0 [pid 5733] close(4) = 0 [pid 5733] mkdir("./file1", 0777) = 0 [pid 5733] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5733] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5733] chdir("./file1") = 0 [pid 5733] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5733] exit_group(0) = ? [pid 5733] +++ exited with 0 +++ [ 175.880978][ T5733] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5733, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./102", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./102/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./102/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./102/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./102/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./102/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./102/file1") = 0 umount2("./102/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./102/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./102") = 0 mkdir("./103", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5734 attached , child_tidptr=0x5555674776d0) = 5734 [pid 5734] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5734] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5734] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5734] chdir("./103") = 0 [pid 5734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5734] setpgid(0, 0) = 0 [pid 5734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5734] write(3, "1000", 4) = 4 [pid 5734] close(3) = 0 [pid 5734] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5734] write(1, "executing program\n", 18) = 18 executing program [pid 5734] memfd_create("syzkaller", 0) = 3 [pid 5734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5734] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5734] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5734] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5734] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5734] close(3) = 0 [pid 5734] close(4) = 0 [pid 5734] mkdir("./file1", 0777) = 0 [pid 5734] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5734] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5734] chdir("./file1") = 0 [pid 5734] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5734] exit_group(0) = ? [pid 5734] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5734, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./103", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 176.455413][ T5734] loop0: detected capacity change from 0 to 32768 umount2("./103/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./103/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./103/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./103/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./103/file1") = 0 umount2("./103/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./103/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./103") = 0 mkdir("./104", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5735 attached , child_tidptr=0x5555674776d0) = 5735 [pid 5735] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5735] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5735] chdir("./104") = 0 [pid 5735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5735] setpgid(0, 0) = 0 [pid 5735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5735] write(3, "1000", 4) = 4 [pid 5735] close(3) = 0 [pid 5735] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5735] write(1, "executing program\n", 18) = 18 [pid 5735] memfd_create("syzkaller", 0) = 3 [pid 5735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5735] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5735] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5735] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5735] close(3) = 0 [pid 5735] close(4) = 0 [pid 5735] mkdir("./file1", 0777) = 0 [pid 5735] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5735] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5735] chdir("./file1") = 0 [pid 5735] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5735] exit_group(0) = ? [pid 5735] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5735, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- umount2("./104", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 177.068420][ T5735] loop0: detected capacity change from 0 to 32768 umount2("./104/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./104/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./104/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./104/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./104/file1") = 0 umount2("./104/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./104/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./104") = 0 mkdir("./105", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5736 attached , child_tidptr=0x5555674776d0) = 5736 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5736] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5736] <... set_robust_list resumed>) = 0 [pid 5736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5736] chdir("./105") = 0 [pid 5736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5736] setpgid(0, 0) = 0 [pid 5736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5736] write(3, "1000", 4) = 4 [pid 5736] close(3) = 0 [pid 5736] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5736] write(1, "executing program\n", 18) = 18 [pid 5736] memfd_create("syzkaller", 0) = 3 [pid 5736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5736] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5736] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5736] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5736] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5736] close(3) = 0 [pid 5736] close(4) = 0 [pid 5736] mkdir("./file1", 0777) = 0 [pid 5736] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5736] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5736] chdir("./file1") = 0 [pid 5736] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5736] exit_group(0) = ? [pid 5736] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5736, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./105", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 177.690072][ T5736] loop0: detected capacity change from 0 to 32768 umount2("./105/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./105/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./105/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./105/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./105/file1") = 0 umount2("./105/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./105/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./105") = 0 mkdir("./106", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5737 attached , child_tidptr=0x5555674776d0) = 5737 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5737] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5737] <... set_robust_list resumed>) = 0 [pid 5737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5737] chdir("./106") = 0 [pid 5737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5737] setpgid(0, 0) = 0 [pid 5737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5737] write(3, "1000", 4) = 4 [pid 5737] close(3) = 0 [pid 5737] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5737] write(1, "executing program\n", 18) = 18 executing program [pid 5737] memfd_create("syzkaller", 0) = 3 [pid 5737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5737] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5737] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5737] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5737] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5737] close(3) = 0 [pid 5737] close(4) = 0 [pid 5737] mkdir("./file1", 0777) = 0 [pid 5737] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5737] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5737] chdir("./file1") = 0 [pid 5737] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5737] exit_group(0) = ? [pid 5737] +++ exited with 0 +++ [ 178.322209][ T5737] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5737, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- umount2("./106", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./106/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./106/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./106/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./106/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./106/file1") = 0 umount2("./106/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./106/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./106") = 0 mkdir("./107", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5738 attached , child_tidptr=0x5555674776d0) = 5738 [pid 5738] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5738] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5738] chdir("./107") = 0 [pid 5738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5738] setpgid(0, 0) = 0 [pid 5738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5738] write(3, "1000", 4) = 4 [pid 5738] close(3) = 0 [pid 5738] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5738] write(1, "executing program\n", 18) = 18 [pid 5738] memfd_create("syzkaller", 0) = 3 [pid 5738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5738] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5738] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5738] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5738] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5738] close(3) = 0 [pid 5738] close(4) = 0 [pid 5738] mkdir("./file1", 0777) = 0 [pid 5738] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5738] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5738] chdir("./file1") = 0 [pid 5738] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 178.908615][ T5738] loop0: detected capacity change from 0 to 32768 [pid 5738] exit_group(0) = ? [pid 5738] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5738, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./107", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./107/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./107/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./107/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./107/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./107/file1") = 0 umount2("./107/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./107/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./107") = 0 mkdir("./108", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5739 attached , child_tidptr=0x5555674776d0) = 5739 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5739] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5739] <... set_robust_list resumed>) = 0 [pid 5739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5739] chdir("./108") = 0 [pid 5739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5739] setpgid(0, 0) = 0 [pid 5739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5739] write(3, "1000", 4) = 4 [pid 5739] close(3) = 0 [pid 5739] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5739] write(1, "executing program\n", 18) = 18 [pid 5739] memfd_create("syzkaller", 0) = 3 [pid 5739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5739] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5739] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5739] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5739] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5739] close(3) = 0 [pid 5739] close(4) = 0 [pid 5739] mkdir("./file1", 0777) = 0 [pid 5739] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5739] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5739] chdir("./file1") = 0 [pid 5739] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5739] exit_group(0) = ? [pid 5739] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5739, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./108", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 179.502842][ T5739] loop0: detected capacity change from 0 to 32768 umount2("./108/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./108/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./108/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./108/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./108/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./108/file1") = 0 umount2("./108/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./108/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./108") = 0 mkdir("./109", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5740 attached , child_tidptr=0x5555674776d0) = 5740 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5740] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5740] <... set_robust_list resumed>) = 0 [pid 5740] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5740] chdir("./109") = 0 [pid 5740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5740] setpgid(0, 0) = 0 [pid 5740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5740] write(3, "1000", 4) = 4 [pid 5740] close(3) = 0 [pid 5740] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5740] write(1, "executing program\n", 18) = 18 executing program [pid 5740] memfd_create("syzkaller", 0) = 3 [pid 5740] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5740] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5740] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5740] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5740] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5740] close(3) = 0 [pid 5740] close(4) = 0 [pid 5740] mkdir("./file1", 0777) = 0 [pid 5740] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5740] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5740] chdir("./file1") = 0 [pid 5740] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5740] exit_group(0) = ? [pid 5740] +++ exited with 0 +++ [ 180.061165][ T5740] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5740, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./109", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./109/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./109/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./109/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./109/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./109/file1") = 0 umount2("./109/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./109/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./109") = 0 mkdir("./110", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5741 attached , child_tidptr=0x5555674776d0) = 5741 [pid 5741] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5741] <... set_robust_list resumed>) = 0 [pid 5741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5741] chdir("./110") = 0 [pid 5741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5741] setpgid(0, 0) = 0 [pid 5741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5741] write(3, "1000", 4) = 4 [pid 5741] close(3) = 0 [pid 5741] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5741] write(1, "executing program\n", 18) = 18 executing program [pid 5741] memfd_create("syzkaller", 0) = 3 [pid 5741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5741] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5741] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5741] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5741] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5741] close(3) = 0 [pid 5741] close(4) = 0 [pid 5741] mkdir("./file1", 0777) = 0 [pid 5741] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5741] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5741] chdir("./file1") = 0 [pid 5741] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5741] exit_group(0) = ? [pid 5741] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5741, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- umount2("./110", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 180.729025][ T5741] loop0: detected capacity change from 0 to 32768 umount2("./110/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./110/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./110/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./110/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./110/file1") = 0 umount2("./110/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./110/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./110") = 0 mkdir("./111", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5742 attached [pid 5742] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5742 [pid 5742] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5742] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5742] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5742] chdir("./111") = 0 [pid 5742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5742] setpgid(0, 0) = 0 [pid 5742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5742] write(3, "1000", 4) = 4 [pid 5742] close(3) = 0 [pid 5742] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5742] write(1, "executing program\n", 18) = 18 executing program [pid 5742] memfd_create("syzkaller", 0) = 3 [pid 5742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5742] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5742] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5742] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5742] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5742] close(3) = 0 [pid 5742] close(4) = 0 [pid 5742] mkdir("./file1", 0777) = 0 [pid 5742] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5742] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5742] chdir("./file1") = 0 [ 181.173361][ T5742] loop0: detected capacity change from 0 to 32768 [pid 5742] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5742] exit_group(0) = ? [pid 5742] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5742, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./111", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./111/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./111/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./111/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./111/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./111/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./111/file1") = 0 umount2("./111/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./111/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./111") = 0 mkdir("./112", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5743 attached , child_tidptr=0x5555674776d0) = 5743 [pid 5743] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5743] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5743] chdir("./112") = 0 [pid 5743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5743] setpgid(0, 0) = 0 [pid 5743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5743] write(3, "1000", 4) = 4 [pid 5743] close(3) = 0 [pid 5743] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5743] write(1, "executing program\n", 18) = 18 [pid 5743] memfd_create("syzkaller", 0) = 3 [pid 5743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5743] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5743] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5743] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5743] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5743] close(3) = 0 [pid 5743] close(4) = 0 [pid 5743] mkdir("./file1", 0777) = 0 [pid 5743] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5743] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5743] chdir("./file1") = 0 [pid 5743] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5743] exit_group(0) = ? [pid 5743] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5743, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} --- [ 181.753802][ T5743] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./112", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./112/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./112/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./112/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./112/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./112/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./112/file1") = 0 umount2("./112/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./112/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./112") = 0 mkdir("./113", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5744 attached , child_tidptr=0x5555674776d0) = 5744 [pid 5744] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5744] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5744] chdir("./113") = 0 [pid 5744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5744] setpgid(0, 0) = 0 [pid 5744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5744] write(3, "1000", 4) = 4 [pid 5744] close(3) = 0 [pid 5744] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5744] write(1, "executing program\n", 18) = 18 [pid 5744] memfd_create("syzkaller", 0) = 3 [pid 5744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5744] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5744] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5744] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5744] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5744] close(3) = 0 [pid 5744] close(4) = 0 [pid 5744] mkdir("./file1", 0777) = 0 [pid 5744] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5744] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5744] chdir("./file1") = 0 [pid 5744] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5744] exit_group(0) = ? [pid 5744] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5744, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 182.378836][ T5744] loop0: detected capacity change from 0 to 32768 umount2("./113", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./113/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./113/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./113/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./113/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./113/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./113/file1") = 0 umount2("./113/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./113/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./113") = 0 mkdir("./114", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5745 attached , child_tidptr=0x5555674776d0) = 5745 [pid 5745] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5745] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5745] chdir("./114") = 0 [pid 5745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5745] setpgid(0, 0) = 0 [pid 5745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5745] write(3, "1000", 4) = 4 [pid 5745] close(3) = 0 [pid 5745] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5745] write(1, "executing program\n", 18) = 18 [pid 5745] memfd_create("syzkaller", 0) = 3 [pid 5745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5745] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5745] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5745] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5745] close(3) = 0 [pid 5745] close(4) = 0 [pid 5745] mkdir("./file1", 0777) = 0 [pid 5745] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5745] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5745] chdir("./file1") = 0 [pid 5745] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5745] exit_group(0) = ? [pid 5745] +++ exited with 0 +++ [ 182.962828][ T5745] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5745, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./114", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./114/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./114/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./114/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./114/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./114/file1") = 0 umount2("./114/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./114/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./114") = 0 mkdir("./115", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5746 attached , child_tidptr=0x5555674776d0) = 5746 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5746] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5746] <... set_robust_list resumed>) = 0 [pid 5746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5746] chdir("./115") = 0 [pid 5746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5746] setpgid(0, 0) = 0 [pid 5746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5746] write(3, "1000", 4) = 4 [pid 5746] close(3) = 0 [pid 5746] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5746] write(1, "executing program\n", 18) = 18 [pid 5746] memfd_create("syzkaller", 0) = 3 [pid 5746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5746] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5746] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5746] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5746] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5746] close(3) = 0 [pid 5746] close(4) = 0 [pid 5746] mkdir("./file1", 0777) = 0 [pid 5746] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5746] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5746] chdir("./file1") = 0 [pid 5746] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5746] exit_group(0) = ? [pid 5746] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5746, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./115", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 183.633835][ T5746] loop0: detected capacity change from 0 to 32768 umount2("./115/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./115/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./115/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./115/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./115/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./115/file1") = 0 umount2("./115/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./115/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./115") = 0 mkdir("./116", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5747 attached [pid 5747] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5747 [pid 5747] <... set_robust_list resumed>) = 0 [pid 5747] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5747] chdir("./116") = 0 [pid 5747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5747] setpgid(0, 0) = 0 [pid 5747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5747] write(3, "1000", 4) = 4 [pid 5747] close(3) = 0 [pid 5747] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5747] write(1, "executing program\n", 18) = 18 [pid 5747] memfd_create("syzkaller", 0) = 3 [pid 5747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5747] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5747] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5747] close(3) = 0 [pid 5747] close(4) = 0 [pid 5747] mkdir("./file1", 0777) = 0 [pid 5747] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5747] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5747] chdir("./file1") = 0 [pid 5747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5747] exit_group(0) = ? [ 184.178896][ T5747] loop0: detected capacity change from 0 to 32768 [pid 5747] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5747, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=16 /* 0.16 s */} --- umount2("./116", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./116/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./116/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./116/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./116/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./116/file1") = 0 umount2("./116/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./116/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./116") = 0 mkdir("./117", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5748 attached , child_tidptr=0x5555674776d0) = 5748 [pid 5748] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5748] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5748] chdir("./117") = 0 [pid 5748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5748] setpgid(0, 0) = 0 [pid 5748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5748] write(3, "1000", 4) = 4 [pid 5748] close(3) = 0 [pid 5748] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5748] write(1, "executing program\n", 18) = 18 [pid 5748] memfd_create("syzkaller", 0) = 3 [pid 5748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5748] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5748] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5748] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5748] close(3) = 0 [pid 5748] close(4) = 0 [pid 5748] mkdir("./file1", 0777) = 0 [pid 5748] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5748] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5748] chdir("./file1") = 0 [pid 5748] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5748] exit_group(0) = ? [pid 5748] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5748, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 184.829469][ T5748] loop0: detected capacity change from 0 to 32768 umount2("./117", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./117/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./117/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./117/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./117/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./117/file1") = 0 umount2("./117/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./117/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./117") = 0 mkdir("./118", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5749 attached , child_tidptr=0x5555674776d0) = 5749 [pid 5749] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5749] <... set_robust_list resumed>) = 0 [pid 5749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5749] chdir("./118") = 0 [pid 5749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5749] setpgid(0, 0) = 0 [pid 5749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5749] write(3, "1000", 4) = 4 [pid 5749] close(3) = 0 [pid 5749] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5749] write(1, "executing program\n", 18) = 18 executing program [pid 5749] memfd_create("syzkaller", 0) = 3 [pid 5749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5749] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5749] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5749] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5749] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5749] close(3) = 0 [pid 5749] close(4) = 0 [pid 5749] mkdir("./file1", 0777) = 0 [pid 5749] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5749] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5749] chdir("./file1") = 0 [pid 5749] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5749] exit_group(0) = ? [pid 5749] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5749, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./118", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 185.646568][ T5749] loop0: detected capacity change from 0 to 32768 umount2("./118/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./118/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./118/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./118/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./118/file1") = 0 umount2("./118/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./118/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./118") = 0 mkdir("./119", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5750 attached , child_tidptr=0x5555674776d0) = 5750 [pid 5750] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5750] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5750] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5750] chdir("./119") = 0 [pid 5750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5750] setpgid(0, 0) = 0 [pid 5750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5750] write(3, "1000", 4) = 4 [pid 5750] close(3) = 0 [pid 5750] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5750] write(1, "executing program\n", 18) = 18 executing program [pid 5750] memfd_create("syzkaller", 0) = 3 [pid 5750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5750] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5750] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5750] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5750] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5750] close(3) = 0 [pid 5750] close(4) = 0 [pid 5750] mkdir("./file1", 0777) = 0 [pid 5750] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5750] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5750] chdir("./file1") = 0 [pid 5750] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5750] exit_group(0) = ? [pid 5750] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5750, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./119", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 186.198709][ T5750] loop0: detected capacity change from 0 to 32768 umount2("./119/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./119/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./119/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./119/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./119/file1") = 0 umount2("./119/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./119/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./119") = 0 mkdir("./120", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5751 attached , child_tidptr=0x5555674776d0) = 5751 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5751] set_robust_list(0x5555674776e0, 24) = 0 [pid 5751] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5751] chdir("./120") = 0 [pid 5751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5751] setpgid(0, 0) = 0 [pid 5751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5751] write(3, "1000", 4) = 4 [pid 5751] close(3) = 0 [pid 5751] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5751] write(1, "executing program\n", 18) = 18 [pid 5751] memfd_create("syzkaller", 0) = 3 [pid 5751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5751] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5751] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5751] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5751] close(3) = 0 [pid 5751] close(4) = 0 [pid 5751] mkdir("./file1", 0777) = 0 [pid 5751] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5751] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5751] chdir("./file1") = 0 [pid 5751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 186.779955][ T5751] loop0: detected capacity change from 0 to 32768 [pid 5751] exit_group(0) = ? [pid 5751] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5751, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./120", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./120/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./120/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./120/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./120/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./120/file1") = 0 umount2("./120/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./120/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./120") = 0 mkdir("./121", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5752 attached , child_tidptr=0x5555674776d0) = 5752 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5752] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5752] <... set_robust_list resumed>) = 0 [pid 5752] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5752] chdir("./121") = 0 [pid 5752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5752] setpgid(0, 0) = 0 [pid 5752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5752] write(3, "1000", 4) = 4 [pid 5752] close(3) = 0 [pid 5752] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5752] write(1, "executing program\n", 18) = 18 [pid 5752] memfd_create("syzkaller", 0) = 3 [pid 5752] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5752] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5752] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5752] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5752] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5752] close(3) = 0 [pid 5752] close(4) = 0 [pid 5752] mkdir("./file1", 0777) = 0 [pid 5752] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5752] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5752] chdir("./file1") = 0 [pid 5752] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5752] exit_group(0) = ? [pid 5752] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5752, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./121", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 187.421734][ T5752] loop0: detected capacity change from 0 to 32768 umount2("./121/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./121/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./121/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./121/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./121/file1") = 0 umount2("./121/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./121/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./121") = 0 mkdir("./122", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5753 attached , child_tidptr=0x5555674776d0) = 5753 [pid 5753] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5753] <... set_robust_list resumed>) = 0 [pid 5753] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5753] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5753] chdir("./122") = 0 [pid 5753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5753] setpgid(0, 0) = 0 [pid 5753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5753] write(3, "1000", 4) = 4 [pid 5753] close(3) = 0 [pid 5753] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5753] write(1, "executing program\n", 18) = 18 executing program [pid 5753] memfd_create("syzkaller", 0) = 3 [pid 5753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5753] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5753] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5753] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5753] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5753] close(3) = 0 [pid 5753] close(4) = 0 [pid 5753] mkdir("./file1", 0777) = 0 [pid 5753] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5753] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5753] chdir("./file1") = 0 [pid 5753] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 187.883311][ T5753] loop0: detected capacity change from 0 to 32768 [pid 5753] exit_group(0) = ? [pid 5753] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5753, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./122", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./122/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./122/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./122/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./122/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./122/file1") = 0 umount2("./122/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./122/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./122") = 0 mkdir("./123", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5754 attached , child_tidptr=0x5555674776d0) = 5754 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5754] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5754] <... set_robust_list resumed>) = 0 [pid 5754] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5754] chdir("./123") = 0 [pid 5754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5754] setpgid(0, 0) = 0 [pid 5754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5754] write(3, "1000", 4) = 4 [pid 5754] close(3) = 0 [pid 5754] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5754] write(1, "executing program\n", 18) = 18 executing program [pid 5754] memfd_create("syzkaller", 0) = 3 [pid 5754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5754] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5754] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5754] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5754] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5754] close(3) = 0 [pid 5754] close(4) = 0 [pid 5754] mkdir("./file1", 0777) = 0 [pid 5754] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5754] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5754] chdir("./file1") = 0 [pid 5754] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5754] exit_group(0) = ? [pid 5754] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5754, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 188.509055][ T5754] loop0: detected capacity change from 0 to 32768 umount2("./123", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./123/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./123/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./123/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./123/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./123/file1") = 0 umount2("./123/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./123/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./123") = 0 mkdir("./124", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5755 attached , child_tidptr=0x5555674776d0) = 5755 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5755] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5755] <... set_robust_list resumed>) = 0 [pid 5755] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5755] chdir("./124") = 0 [pid 5755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5755] setpgid(0, 0) = 0 [pid 5755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5755] write(3, "1000", 4) = 4 [pid 5755] close(3) = 0 [pid 5755] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5755] write(1, "executing program\n", 18) = 18 [pid 5755] memfd_create("syzkaller", 0) = 3 [pid 5755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5755] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5755] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5755] close(3) = 0 [pid 5755] close(4) = 0 [pid 5755] mkdir("./file1", 0777) = 0 [pid 5755] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5755] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5755] chdir("./file1") = 0 [pid 5755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5755] exit_group(0) = ? [pid 5755] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5755, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 189.166164][ T5755] loop0: detected capacity change from 0 to 32768 umount2("./124", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./124/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./124/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./124/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./124/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./124/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./124/file1") = 0 umount2("./124/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./124/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./124") = 0 mkdir("./125", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5756 attached , child_tidptr=0x5555674776d0) = 5756 [pid 5756] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5756] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5756] chdir("./125") = 0 [pid 5756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5756] setpgid(0, 0) = 0 [pid 5756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5756] write(3, "1000", 4) = 4 [pid 5756] close(3) = 0 [pid 5756] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5756] write(1, "executing program\n", 18) = 18 [pid 5756] memfd_create("syzkaller", 0) = 3 [pid 5756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5756] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5756] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5756] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5756] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5756] close(3) = 0 [pid 5756] close(4) = 0 [pid 5756] mkdir("./file1", 0777) = 0 [pid 5756] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5756] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5756] chdir("./file1") = 0 [pid 5756] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5756] exit_group(0) = ? [pid 5756] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5756, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 189.749327][ T5756] loop0: detected capacity change from 0 to 32768 umount2("./125", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./125/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./125/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./125/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./125/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./125/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./125/file1") = 0 umount2("./125/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./125/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./125") = 0 mkdir("./126", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5757 attached , child_tidptr=0x5555674776d0) = 5757 [pid 5757] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5757] <... set_robust_list resumed>) = 0 [pid 5757] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5757] chdir("./126") = 0 [pid 5757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5757] setpgid(0, 0) = 0 [pid 5757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5757] write(3, "1000", 4) = 4 [pid 5757] close(3) = 0 [pid 5757] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5757] write(1, "executing program\n", 18) = 18 [pid 5757] memfd_create("syzkaller", 0) = 3 [pid 5757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5757] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5757] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5757] close(3) = 0 [pid 5757] close(4) = 0 [pid 5757] mkdir("./file1", 0777) = 0 [pid 5757] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5757] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5757] chdir("./file1") = 0 [pid 5757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5757] exit_group(0) = ? [pid 5757] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5757, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./126", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 190.554040][ T5757] loop0: detected capacity change from 0 to 32768 umount2("./126/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./126/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./126/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./126/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./126/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./126/file1") = 0 umount2("./126/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./126/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./126") = 0 mkdir("./127", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5758 attached , child_tidptr=0x5555674776d0) = 5758 [pid 5758] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5758] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5758] chdir("./127") = 0 [pid 5758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5758] setpgid(0, 0) = 0 [pid 5758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5758] write(3, "1000", 4) = 4 [pid 5758] close(3) = 0 [pid 5758] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5758] write(1, "executing program\n", 18) = 18 executing program [pid 5758] memfd_create("syzkaller", 0) = 3 [pid 5758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5758] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5758] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5758] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5758] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5758] close(3) = 0 [pid 5758] close(4) = 0 [pid 5758] mkdir("./file1", 0777) = 0 [pid 5758] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5758] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5758] chdir("./file1") = 0 [pid 5758] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5758] exit_group(0) = ? [pid 5758] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5758, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- [ 191.108241][ T5758] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./127", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./127/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./127/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./127/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./127/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./127/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./127/file1") = 0 umount2("./127/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./127/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./127") = 0 mkdir("./128", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5759 attached , child_tidptr=0x5555674776d0) = 5759 [pid 5759] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5759] chdir("./128") = 0 [pid 5759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5759] setpgid(0, 0) = 0 [pid 5759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5759] write(3, "1000", 4) = 4 [pid 5759] close(3) = 0 [pid 5759] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5759] write(1, "executing program\n", 18) = 18 [pid 5759] memfd_create("syzkaller", 0) = 3 [pid 5759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5759] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5759] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5759] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5759] close(3) = 0 [pid 5759] close(4) = 0 [pid 5759] mkdir("./file1", 0777) = 0 [pid 5759] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5759] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5759] chdir("./file1") = 0 [pid 5759] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5759] exit_group(0) = ? [pid 5759] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5759, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [ 191.753134][ T5759] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./128", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./128/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./128/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./128/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./128/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./128/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./128/file1") = 0 umount2("./128/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./128/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./128") = 0 mkdir("./129", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5760 attached , child_tidptr=0x5555674776d0) = 5760 [pid 5760] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5760] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5760] chdir("./129") = 0 [pid 5760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5760] setpgid(0, 0) = 0 [pid 5760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5760] write(3, "1000", 4) = 4 [pid 5760] close(3) = 0 [pid 5760] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5760] write(1, "executing program\n", 18) = 18 [pid 5760] memfd_create("syzkaller", 0) = 3 [pid 5760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5760] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5760] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5760] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5760] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5760] close(3) = 0 [pid 5760] close(4) = 0 [pid 5760] mkdir("./file1", 0777) = 0 [pid 5760] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5760] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5760] chdir("./file1") = 0 [pid 5760] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5760] exit_group(0) = ? [pid 5760] +++ exited with 0 +++ [ 192.390090][ T5760] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5760, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./129", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./129/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./129/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./129/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./129/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./129/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./129/file1") = 0 umount2("./129/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./129/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./129") = 0 mkdir("./130", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5761 attached , child_tidptr=0x5555674776d0) = 5761 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5761] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5761] <... set_robust_list resumed>) = 0 [pid 5761] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5761] chdir("./130") = 0 [pid 5761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5761] setpgid(0, 0) = 0 [pid 5761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5761] write(3, "1000", 4) = 4 [pid 5761] close(3) = 0 [pid 5761] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5761] write(1, "executing program\n", 18) = 18 [pid 5761] memfd_create("syzkaller", 0) = 3 [pid 5761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5761] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5761] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5761] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5761] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5761] close(3) = 0 [pid 5761] close(4) = 0 [pid 5761] mkdir("./file1", 0777) = 0 [pid 5761] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5761] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5761] chdir("./file1") = 0 [pid 5761] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5761] exit_group(0) = ? [pid 5761] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5761, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=17 /* 0.17 s */} --- [ 192.990685][ T5761] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./130", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./130/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./130/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./130/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./130/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./130/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./130/file1") = 0 umount2("./130/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./130/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./130") = 0 mkdir("./131", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5762 attached , child_tidptr=0x5555674776d0) = 5762 [pid 5762] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5762] chdir("./131") = 0 [pid 5762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5762] setpgid(0, 0) = 0 [pid 5762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5762] write(3, "1000", 4) = 4 [pid 5762] close(3) = 0 [pid 5762] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5762] write(1, "executing program\n", 18) = 18 executing program [pid 5762] memfd_create("syzkaller", 0) = 3 [pid 5762] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5762] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5762] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5762] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5762] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5762] close(3) = 0 [pid 5762] close(4) = 0 [pid 5762] mkdir("./file1", 0777) = 0 [pid 5762] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5762] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5762] chdir("./file1") = 0 [pid 5762] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5762] exit_group(0) = ? [ 193.649374][ T5762] loop0: detected capacity change from 0 to 32768 [pid 5762] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5762, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=15 /* 0.15 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./131", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./131/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./131/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./131/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./131/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./131/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./131/file1") = 0 umount2("./131/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./131/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./131") = 0 mkdir("./132", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5763 attached , child_tidptr=0x5555674776d0) = 5763 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5763] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5763] <... set_robust_list resumed>) = 0 [pid 5763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5763] chdir("./132") = 0 [pid 5763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5763] setpgid(0, 0) = 0 [pid 5763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5763] write(3, "1000", 4) = 4 [pid 5763] close(3) = 0 [pid 5763] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5763] write(1, "executing program\n", 18) = 18 [pid 5763] memfd_create("syzkaller", 0) = 3 [pid 5763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5763] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5763] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5763] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5763] close(3) = 0 [pid 5763] close(4) = 0 [pid 5763] mkdir("./file1", 0777) = 0 [pid 5763] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5763] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5763] chdir("./file1") = 0 [pid 5763] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5763] exit_group(0) = ? [pid 5763] +++ exited with 0 +++ [ 194.291382][ T5763] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5763, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./132", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./132/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./132/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./132/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./132/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./132/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./132/file1") = 0 umount2("./132/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./132/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./132") = 0 mkdir("./133", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5765 attached , child_tidptr=0x5555674776d0) = 5765 [pid 5765] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5765] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5765] chdir("./133") = 0 [pid 5765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5765] setpgid(0, 0) = 0 [pid 5765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5765] write(3, "1000", 4) = 4 [pid 5765] close(3) = 0 [pid 5765] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5765] write(1, "executing program\n", 18) = 18 [pid 5765] memfd_create("syzkaller", 0) = 3 [pid 5765] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5765] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5765] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5765] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5765] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5765] close(3) = 0 [pid 5765] close(4) = 0 [pid 5765] mkdir("./file1", 0777) = 0 [pid 5765] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5765] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5765] chdir("./file1") = 0 [pid 5765] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5765] exit_group(0) = ? [pid 5765] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5765, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [ 194.913704][ T5765] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./133", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./133/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./133/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./133/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./133/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./133/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./133/file1") = 0 umount2("./133/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./133/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./133") = 0 mkdir("./134", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5767 attached , child_tidptr=0x5555674776d0) = 5767 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5767] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5767] <... set_robust_list resumed>) = 0 [pid 5767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5767] chdir("./134") = 0 [pid 5767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5767] setpgid(0, 0) = 0 [pid 5767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5767] write(3, "1000", 4) = 4 [pid 5767] close(3) = 0 [pid 5767] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5767] write(1, "executing program\n", 18) = 18 executing program [pid 5767] memfd_create("syzkaller", 0) = 3 [pid 5767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5767] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5767] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5767] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5767] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5767] close(3) = 0 [pid 5767] close(4) = 0 [pid 5767] mkdir("./file1", 0777) = 0 [pid 5767] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5767] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5767] chdir("./file1") = 0 [pid 5767] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5767] exit_group(0) = ? [pid 5767] +++ exited with 0 +++ [ 195.615429][ T5767] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5767, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=22 /* 0.22 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./134", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./134/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./134/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./134/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./134/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./134/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./134/file1") = 0 umount2("./134/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./134/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./134") = 0 mkdir("./135", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555674776d0) = 5771 ci2-upstream-fs/strace-static-x86_64: Process 5771 attached [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5771] set_robust_list(0x5555674776e0, 24) = 0 [pid 5771] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5771] chdir("./135") = 0 [pid 5771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5771] setpgid(0, 0) = 0 [pid 5771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5771] write(3, "1000", 4) = 4 [pid 5771] close(3) = 0 [pid 5771] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5771] write(1, "executing program\n", 18) = 18 [pid 5771] memfd_create("syzkaller", 0) = 3 [pid 5771] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5771] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5771] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5771] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5771] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5771] close(3) = 0 [pid 5771] close(4) = 0 [pid 5771] mkdir("./file1", 0777) = 0 [pid 5771] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5771] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5771] chdir("./file1") = 0 [pid 5771] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5771] exit_group(0) = ? [pid 5771] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5771, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./135", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 196.232646][ T5771] loop0: detected capacity change from 0 to 32768 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./135/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./135/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./135/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./135/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./135/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./135/file1") = 0 umount2("./135/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./135/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./135") = 0 mkdir("./136", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5773 attached [pid 5773] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5773 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5773] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5773] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5773] chdir("./136") = 0 [pid 5773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5773] setpgid(0, 0) = 0 [pid 5773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5773] write(3, "1000", 4) = 4 [pid 5773] close(3) = 0 [pid 5773] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5773] write(1, "executing program\n", 18) = 18 executing program [pid 5773] memfd_create("syzkaller", 0) = 3 [pid 5773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5773] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5773] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5773] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5773] close(3) = 0 [pid 5773] close(4) = 0 [pid 5773] mkdir("./file1", 0777) = 0 [pid 5773] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5773] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5773] chdir("./file1") = 0 [pid 5773] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5773] exit_group(0) = ? [pid 5773] +++ exited with 0 +++ [ 196.780764][ T5773] loop0: detected capacity change from 0 to 32768 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5773, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./136", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./136/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./136/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./136/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./136/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./136/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./136/file1") = 0 umount2("./136/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./136/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./136") = 0 mkdir("./137", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5774 attached , child_tidptr=0x5555674776d0) = 5774 [pid 5774] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5774] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5774] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5774] chdir("./137") = 0 [pid 5774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5774] setpgid(0, 0) = 0 [pid 5774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5774] write(3, "1000", 4) = 4 [pid 5774] close(3) = 0 [pid 5774] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5774] write(1, "executing program\n", 18) = 18 [pid 5774] memfd_create("syzkaller", 0) = 3 [pid 5774] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5774] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5774] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5774] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5774] close(3) = 0 [pid 5774] close(4) = 0 [pid 5774] mkdir("./file1", 0777) = 0 [pid 5774] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5774] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5774] chdir("./file1") = 0 [pid 5774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5774] exit_group(0) = ? [pid 5774] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5774, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./137", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 197.411823][ T5774] loop0: detected capacity change from 0 to 32768 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./137/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./137/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./137/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./137/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./137/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./137/file1") = 0 umount2("./137/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./137/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./137") = 0 mkdir("./138", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5775 attached , child_tidptr=0x5555674776d0) = 5775 [pid 5775] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5775] chdir("./138") = 0 [pid 5775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5775] setpgid(0, 0) = 0 [pid 5775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5775] write(3, "1000", 4) = 4 [pid 5775] close(3) = 0 [pid 5775] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5775] write(1, "executing program\n", 18) = 18 executing program [pid 5775] memfd_create("syzkaller", 0) = 3 [pid 5775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5775] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5775] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5775] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5775] close(3) = 0 [pid 5775] close(4) = 0 [pid 5775] mkdir("./file1", 0777) = 0 [pid 5775] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5775] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5775] chdir("./file1") = 0 [pid 5775] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5775] exit_group(0) = ? [ 198.045166][ T5775] loop0: detected capacity change from 0 to 32768 [pid 5775] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5775, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- umount2("./138", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./138/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./138/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./138/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./138/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./138/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./138/file1") = 0 umount2("./138/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./138/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./138") = 0 mkdir("./139", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5776 attached , child_tidptr=0x5555674776d0) = 5776 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5776] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5776] <... set_robust_list resumed>) = 0 [pid 5776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5776] chdir("./139") = 0 [pid 5776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5776] setpgid(0, 0) = 0 [pid 5776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5776] write(3, "1000", 4) = 4 [pid 5776] close(3) = 0 [pid 5776] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5776] write(1, "executing program\n", 18) = 18 executing program [pid 5776] memfd_create("syzkaller", 0) = 3 [pid 5776] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5776] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5776] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5776] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5776] close(3) = 0 [pid 5776] close(4) = 0 [pid 5776] mkdir("./file1", 0777) = 0 [pid 5776] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 198.639304][ T5776] loop0: detected capacity change from 0 to 32768 [pid 5776] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5776] chdir("./file1") = 0 [pid 5776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5776] exit_group(0) = ? [pid 5776] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5776, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./139", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./139/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./139/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./139/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./139/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./139/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./139/file1") = 0 umount2("./139/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./139/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./139") = 0 mkdir("./140", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5777 attached , child_tidptr=0x5555674776d0) = 5777 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5777] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5777] chdir("./140") = 0 [pid 5777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5777] setpgid(0, 0) = 0 [pid 5777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5777] write(3, "1000", 4) = 4 [pid 5777] close(3) = 0 [pid 5777] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5777] write(1, "executing program\n", 18) = 18 executing program [pid 5777] memfd_create("syzkaller", 0) = 3 [pid 5777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5777] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5777] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5777] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5777] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5777] close(3) = 0 [pid 5777] close(4) = 0 [pid 5777] mkdir("./file1", 0777) = 0 [pid 5777] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5777] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5777] chdir("./file1") = 0 [pid 5777] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5777] exit_group(0) = ? [pid 5777] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5777, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./140", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 199.409444][ T5777] loop0: detected capacity change from 0 to 32768 umount2("./140/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./140/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./140/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./140/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./140/file1") = 0 umount2("./140/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./140/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./140") = 0 mkdir("./141", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5778 attached , child_tidptr=0x5555674776d0) = 5778 [pid 5778] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5778] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5778] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5778] chdir("./141") = 0 [pid 5778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5778] setpgid(0, 0) = 0 [pid 5778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5778] write(3, "1000", 4) = 4 [pid 5778] close(3) = 0 [pid 5778] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5778] write(1, "executing program\n", 18) = 18 [pid 5778] memfd_create("syzkaller", 0) = 3 [pid 5778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5778] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5778] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5778] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5778] close(3) = 0 [pid 5778] close(4) = 0 [pid 5778] mkdir("./file1", 0777) = 0 [pid 5778] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5778] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5778] chdir("./file1") = 0 [pid 5778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5778] exit_group(0) = ? [pid 5778] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5778, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./141", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 199.984656][ T5778] loop0: detected capacity change from 0 to 32768 umount2("./141/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./141/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./141/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./141/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./141/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./141/file1") = 0 umount2("./141/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./141/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./141") = 0 mkdir("./142", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5779 attached , child_tidptr=0x5555674776d0) = 5779 [pid 5779] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5779] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5779] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5779] chdir("./142") = 0 [pid 5779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5779] setpgid(0, 0) = 0 [pid 5779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5779] write(3, "1000", 4) = 4 [pid 5779] close(3) = 0 [pid 5779] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5779] write(1, "executing program\n", 18) = 18 [pid 5779] memfd_create("syzkaller", 0) = 3 [pid 5779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5779] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5779] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5779] close(3) = 0 [pid 5779] close(4) = 0 [pid 5779] mkdir("./file1", 0777) = 0 [pid 5779] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5779] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5779] chdir("./file1") = 0 [pid 5779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5779] exit_group(0) = ? [pid 5779] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5779, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./142", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 200.559319][ T5779] loop0: detected capacity change from 0 to 32768 umount2("./142/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./142/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./142/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./142/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./142/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./142/file1") = 0 umount2("./142/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./142/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./142") = 0 mkdir("./143", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5780 attached [pid 5780] set_robust_list(0x5555674776e0, 24 [pid 5624] <... clone resumed>, child_tidptr=0x5555674776d0) = 5780 [pid 5780] <... set_robust_list resumed>) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5780] chdir("./143") = 0 [pid 5780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5780] setpgid(0, 0) = 0 [pid 5780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "1000", 4) = 4 [pid 5780] close(3) = 0 [pid 5780] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5780] write(1, "executing program\n", 18) = 18 [pid 5780] memfd_create("syzkaller", 0) = 3 [pid 5780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5780] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5780] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5780] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5780] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5780] close(3) = 0 [pid 5780] close(4) = 0 [pid 5780] mkdir("./file1", 0777) = 0 [pid 5780] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5780] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5780] chdir("./file1") = 0 [pid 5780] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5780] exit_group(0) = ? [pid 5780] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5780, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=21 /* 0.21 s */} --- [ 201.035846][ T5780] loop0: detected capacity change from 0 to 32768 restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./143", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./143/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./143/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./143/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./143/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./143/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./143/file1") = 0 umount2("./143/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./143/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./143") = 0 mkdir("./144", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5781 attached , child_tidptr=0x5555674776d0) = 5781 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5781] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5781] <... set_robust_list resumed>) = 0 [pid 5781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5781] chdir("./144") = 0 [pid 5781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5781] setpgid(0, 0) = 0 [pid 5781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5781] write(3, "1000", 4) = 4 [pid 5781] close(3) = 0 [pid 5781] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5781] write(1, "executing program\n", 18) = 18 executing program [pid 5781] memfd_create("syzkaller", 0) = 3 [pid 5781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5781] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5781] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5781] close(3) = 0 [pid 5781] close(4) = 0 [pid 5781] mkdir("./file1", 0777) = 0 [pid 5781] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5781] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5781] chdir("./file1") = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 201.621238][ T5781] loop0: detected capacity change from 0 to 32768 [pid 5781] exit_group(0) = ? [pid 5781] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5781, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./144", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./144/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./144/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./144/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./144/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./144/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./144/file1") = 0 umount2("./144/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./144/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./144") = 0 mkdir("./145", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5782 attached , child_tidptr=0x5555674776d0) = 5782 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5782] set_robust_list(0x5555674776e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5782] <... set_robust_list resumed>) = 0 [pid 5782] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5782] chdir("./145") = 0 [pid 5782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5782] setpgid(0, 0) = 0 [pid 5782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5782] write(3, "1000", 4) = 4 [pid 5782] close(3) = 0 [pid 5782] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5782] write(1, "executing program\n", 18) = 18 [pid 5782] memfd_create("syzkaller", 0) = 3 [pid 5782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5782] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5782] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5782] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5782] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5782] close(3) = 0 [pid 5782] close(4) = 0 [pid 5782] mkdir("./file1", 0777) = 0 [pid 5782] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5782] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5782] chdir("./file1") = 0 [pid 5782] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5782] exit_group(0) = ? [pid 5782] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5782, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 202.264604][ T5782] loop0: detected capacity change from 0 to 32768 umount2("./145", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./145/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./145/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./145/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./145/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./145/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./145/file1") = 0 umount2("./145/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./145/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./145/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./145") = 0 mkdir("./146", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5783 attached , child_tidptr=0x5555674776d0) = 5783 [pid 5783] set_robust_list(0x5555674776e0, 24) = 0 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5783] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5783] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5783] chdir("./146") = 0 [pid 5783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5783] setpgid(0, 0) = 0 [pid 5783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5783] write(3, "1000", 4) = 4 [pid 5783] close(3) = 0 [pid 5783] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5783] write(1, "executing program\n", 18) = 18 executing program [pid 5783] memfd_create("syzkaller", 0) = 3 [pid 5783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5783] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5783] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5783] close(3) = 0 [pid 5783] close(4) = 0 [pid 5783] mkdir("./file1", 0777) = 0 [pid 5783] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5783] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5783] chdir("./file1") = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5783] exit_group(0) = ? [pid 5783] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5783, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 202.847534][ T5783] loop0: detected capacity change from 0 to 32768 umount2("./146", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 umount2("./146/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./146/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./146/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./146/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555674807d0 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555674807d0 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./146/file1") = 0 umount2("./146/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./146/binderfs") = 0 getdents64(3, 0x555567478790 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./146") = 0 mkdir("./147", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5784 attached , child_tidptr=0x5555674776d0) = 5784 [pid 5784] set_robust_list(0x5555674776e0, 24 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5784] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5784] chdir("./147") = 0 [pid 5784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5784] setpgid(0, 0) = 0 [pid 5784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1000", 4) = 4 [pid 5784] close(3) = 0 [pid 5784] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5784] write(1, "executing program\n", 18) = 18 executing program [pid 5784] memfd_create("syzkaller", 0) = 3 [pid 5784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe4fc0a1000 [pid 5784] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5784] munmap(0x7fe4fc0a1000, 138412032) = 0 [pid 5784] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5784] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5784] close(3) = 0 [pid 5784] close(4) = 0 [pid 5784] mkdir("./file1", 0777) = 0 [pid 5784] mount("/dev/loop0", "./file1", "jfs", MS_NOSUID|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5784] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5784] chdir("./file1") = 0 [pid 5784] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5784] exit_group(0) = ? [pid 5784] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5784, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 umount2("./147", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555567478790 /* 4 entries */, 32768) = 112 [ 203.431222][ T5784] loop0: detected capacity change from 0 to 32768 umount2("./147/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [ 203.536114][ C0] ================================================================== [ 203.536135][ C0] BUG: KASAN: slab-use-after-free in lbmIODone+0x130e/0x16b0 [ 203.536196][ C0] Read of size 4 at addr ffff888034f43c08 by task ksoftirqd/0/15 [ 203.536217][ C0] [ 203.536246][ C0] CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 203.536285][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 203.536307][ C0] Call Trace: [ 203.536315][ C0] [ 203.536324][ C0] dump_stack_lvl+0xe8/0x150 [ 203.536362][ C0] print_address_description+0x55/0x1e0 [ 203.536399][ C0] ? lbmIODone+0x130e/0x16b0 [ 203.536419][ C0] print_report+0x58/0x70 [ 203.536451][ C0] kasan_report+0x117/0x150 [ 203.536480][ C0] ? lbmIODone+0x130e/0x16b0 [ 203.536505][ C0] lbmIODone+0x130e/0x16b0 [ 203.536526][ C0] ? blkg_put+0x22/0x240 [ 203.536545][ C0] ? blkg_put+0x22/0x240 [ 203.536565][ C0] ? blkg_put+0x18d/0x240 [ 203.536586][ C0] ? bio_endio+0x980/0x9d0 [ 203.536613][ C0] blk_update_request+0x57b/0xe50 [ 203.536647][ C0] blk_mq_end_request+0x3e/0x70 [ 203.536674][ C0] blk_done_softirq+0x10a/0x160 [ 203.536700][ C0] handle_softirqs+0x1d9/0x6c0 [ 203.536736][ C0] run_ksoftirqd+0x52/0x180 [ 203.536768][ C0] smpboot_thread_fn+0x57c/0xa80 [ 203.536801][ C0] ? smpboot_thread_fn+0x4e/0xa80 [ 203.536836][ C0] kthread+0x388/0x470 [ 203.536871][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 203.536901][ C0] ? __pfx_kthread+0x10/0x10 [ 203.536935][ C0] ret_from_fork+0x514/0xb70 [ 203.536973][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 203.537009][ C0] ? __switch_to+0xc89/0x1420 [ 203.537041][ C0] ? __pfx_kthread+0x10/0x10 [ 203.537075][ C0] ret_from_fork_asm+0x1a/0x30 [ 203.537106][ C0] [ 203.537116][ C0] [ 203.537122][ C0] Allocated by task 5784: [ 203.537133][ C0] kasan_save_track+0x3e/0x80 [ 203.537157][ C0] __kasan_kmalloc+0x93/0xb0 [ 203.537178][ C0] __kmalloc_cache_noprof+0x3d2/0x6b0 [ 203.537201][ C0] lmLogInit+0x3e5/0x1a20 [ 203.537233][ C0] lmLogOpen+0x4e3/0xf90 [ 203.537263][ C0] jfs_mount_rw+0xf3/0x670 [ 203.537302][ C0] jfs_fill_super+0x769/0xda0 [ 203.537326][ C0] get_tree_bdev_flags+0x430/0x4f0 [ 203.537354][ C0] vfs_get_tree+0x92/0x2a0 [ 203.537381][ C0] do_new_mount+0x319/0xdc0 [ 203.537401][ C0] __se_sys_mount+0x31d/0x420 [ 203.537422][ C0] do_syscall_64+0x174/0x580 [ 203.537457][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 203.537479][ C0] [ 203.537484][ C0] Freed by task 5624: [ 203.537494][ C0] kasan_save_track+0x3e/0x80 [ 203.537514][ C0] kasan_save_free_info+0x40/0x50 [ 203.537544][ C0] __kasan_slab_free+0x5c/0x80 [ 203.537566][ C0] kfree+0x1c5/0x6c0 [ 203.537583][ C0] lmLogShutdown+0x456/0x850 [ 203.537600][ C0] lmLogClose+0x28c/0x530 [ 203.537632][ C0] jfs_umount+0x2da/0x3b0 [ 203.537662][ C0] jfs_put_super+0x8c/0x190 [ 203.537686][ C0] generic_shutdown_super+0x13d/0x2d0 [ 203.537710][ C0] kill_block_super+0x44/0x90 [ 203.537736][ C0] deactivate_locked_super+0xbc/0x130 [ 203.537758][ C0] cleanup_mnt+0x3d3/0x460 [ 203.537784][ C0] task_work_run+0x1d9/0x270 [ 203.537803][ C0] ptrace_notify+0x27c/0x2b0 [ 203.537827][ C0] ptrace_report_syscall_exit+0x2d/0x50 [ 203.537849][ C0] do_syscall_64+0x4f0/0x580 [ 203.537877][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 203.537898][ C0] [ 203.537903][ C0] The buggy address belongs to the object at ffff888034f43c00 [ 203.537903][ C0] which belongs to the cache kmalloc-256 of size 256 [ 203.537923][ C0] The buggy address is located 8 bytes inside of [ 203.537923][ C0] freed 256-byte region [ffff888034f43c00, ffff888034f43d00) [ 203.537946][ C0] [ 203.537952][ C0] The buggy address belongs to the physical page: [ 203.537979][ C0] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888034f42a00 pfn:0x34f42 [ 203.538003][ C0] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 203.538021][ C0] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 203.538046][ C0] page_type: f5(slab) [ 203.538068][ C0] raw: 0080000000000240 ffff88813ffb2b40 ffffea0000d75110 ffffea0000cb7e10 [ 203.538090][ C0] raw: ffff888034f42a00 000000080010000c 00000000f5000000 0000000000000000 [ 203.538111][ C0] head: 0080000000000240 ffff88813ffb2b40 ffffea0000d75110 ffffea0000cb7e10 [ 203.538131][ C0] head: ffff888034f42a00 000000080010000c 00000000f5000000 0000000000000000 [ 203.538152][ C0] head: 0080000000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff [ 203.538171][ C0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002 [ 203.538182][ C0] page dumped because: kasan: bad access detected [ 203.538198][ C0] page_owner tracks the page as allocated [ 203.538206][ C0] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 28985199774, free_ts 0 [ 203.538245][ C0] post_alloc_hook+0x1f9/0x250 [ 203.538266][ C0] get_page_from_freelist+0x262a/0x26a0 [ 203.538300][ C0] __alloc_frozen_pages_noprof+0x18d/0x380 [ 203.538326][ C0] allocate_slab+0x79/0x5e0 [ 203.538355][ C0] refill_objects+0x2d8/0x350 [ 203.538385][ C0] __pcs_replace_empty_main+0x330/0x690 [ 203.538414][ C0] __kmalloc_node_track_caller_noprof+0x62d/0x7c0 [ 203.538438][ C0] krealloc_node_align_noprof+0x19a/0x390 [ 203.538462][ C0] add_sysfs_param+0xd4/0xb80 [ 203.538487][ C0] kernel_add_sysfs_param+0x7f/0xe0 [ 203.538526][ C0] param_sysfs_builtin+0x199/0x250 [ 203.538557][ C0] param_sysfs_builtin_init+0x23/0x30 [ 203.538588][ C0] do_one_initcall+0x250/0x870 [ 203.538606][ C0] do_initcall_level+0x10a/0x1a0 [ 203.538625][ C0] do_initcalls+0x59/0xa0 [ 203.538642][ C0] kernel_init_freeable+0x29d/0x3e0 [ 203.538661][ C0] page_owner free stack trace missing [ 203.538669][ C0] [ 203.538674][ C0] Memory state around the buggy address: [ 203.538687][ C0] ffff888034f43b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 203.538703][ C0] ffff888034f43b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 203.538718][ C0] >ffff888034f43c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 203.538730][ C0] ^ [ 203.538742][ C0] ffff888034f43c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 203.538757][ C0] ffff888034f43d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 203.538768][ C0] ================================================================== [ 203.547348][ C0] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 203.547387][ C0] CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 203.547447][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 203.547462][ C0] Call Trace: [ 203.547490][ C0] [ 203.547499][ C0] vpanic+0x56c/0xa60 [ 203.547528][ C0] ? __pfx_vpanic+0x10/0x10 [ 203.547550][ C0] ? __pfx___schedule+0x10/0x10 [ 203.547587][ C0] panic+0xc5/0xd0 [ 203.547609][ C0] ? __pfx_panic+0x10/0x10 [ 203.547630][ C0] ? preempt_schedule_thunk+0x16/0x40 [ 203.547663][ C0] ? lbmIODone+0x130e/0x16b0 [ 203.547683][ C0] check_panic_on_warn+0x89/0xb0 [ 203.547704][ C0] ? lbmIODone+0x130e/0x16b0 [ 203.547721][ C0] end_report+0x73/0x170 [ 203.547747][ C0] ? lbmIODone+0x130e/0x16b0 [ 203.547766][ C0] kasan_report+0x128/0x150 [ 203.547793][ C0] ? lbmIODone+0x130e/0x16b0 [ 203.547816][ C0] lbmIODone+0x130e/0x16b0 [ 203.547836][ C0] ? blkg_put+0x22/0x240 [ 203.547855][ C0] ? blkg_put+0x22/0x240 [ 203.547874][ C0] ? blkg_put+0x18d/0x240 [ 203.547894][ C0] ? bio_endio+0x980/0x9d0 [ 203.547921][ C0] blk_update_request+0x57b/0xe50 [ 203.547956][ C0] blk_mq_end_request+0x3e/0x70 [ 203.547982][ C0] blk_done_softirq+0x10a/0x160 [ 203.548006][ C0] handle_softirqs+0x1d9/0x6c0 [ 203.548040][ C0] run_ksoftirqd+0x52/0x180 [ 203.548072][ C0] smpboot_thread_fn+0x57c/0xa80 [ 203.548106][ C0] ? smpboot_thread_fn+0x4e/0xa80 [ 203.548141][ C0] kthread+0x388/0x470 [ 203.548175][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 203.548205][ C0] ? __pfx_kthread+0x10/0x10 [ 203.548240][ C0] ret_from_fork+0x514/0xb70 [ 203.548287][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 203.548322][ C0] ? __switch_to+0xc89/0x1420 [ 203.548355][ C0] ? __pfx_kthread+0x10/0x10 [ 203.548390][ C0] ret_from_fork_asm+0x1a/0x30 [ 203.548421][ C0] [ 203.549037][ C0] Kernel Offset: disabled