ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor149586547 <...> Warning: Permanently added '10.128.0.31' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor149586547", ["ci2-upstream-fs/syz-executor149586547"], 0x7ffc32fd4d90 /* 10 vars */) = 0 brk(NULL) = 0x55557e59d000 brk(0x55557e59dd80) = 0x55557e59dd80 arch_prctl(ARCH_SET_FS, 0x55557e59d400) = 0 set_tid_address(0x55557e59d6d0) = 5624 set_robust_list(0x55557e59d6e0, 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-executor149586547", 4096) = 43 getrandom("\xc7\x38\x66\x2a\x3b\x65\xa3\xd2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557e59dd80 brk(0x55557e5bed80) = 0x55557e5bed80 brk(0x55557e5bf000) = 0x55557e5bf000 mprotect(0x7f94330b7000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5625 attached , child_tidptr=0x55557e59d6d0) = 5625 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5625] set_robust_list(0x55557e59d6e0, 24 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC [pid 5625] <... set_robust_list resumed>) = 0 [pid 5624] <... openat resumed>) = 3 [pid 5625] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] write(3, "10000000000", 11 [pid 5625] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5624] <... write resumed>) = 11 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "20", 2) = 2 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "1", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "0", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "0", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "1", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "100", 3) = 3 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "0", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "0", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "7 4 1 3", 7) = 7 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "1", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "1", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "Y", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "0", 1) = 1 [pid 5624] close(3) = 0 [pid 5624] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5624] write(3, "5625", 4) = 4 [pid 5624] close(3) = 0 [pid 5624] kill(5625, SIGKILL) = 0 [pid 5625] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5625, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=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=0x55557e59d6d0) = 5626 [pid 5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5626] set_robust_list(0x55557e59d6e0, 24 [pid 5624] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5626] <... set_robust_list resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5624] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5626] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5627 attached , NULL, 8) = 0 [pid 5624] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5627 [pid 5627] set_robust_list(0x55557e59d6e0, 24 [pid 5626] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5626] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5627] <... set_robust_list resumed>) = 0 [pid 5626] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5624] rt_sigprocmask(SIG_BLOCK, ~[]ci2-upstream-fs/strace-static-x86_64: Process 5628 attached , [], 8) = 0 [pid 5627] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5626] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5628 [pid 5624] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5628] set_robust_list(0x55557e59d6e0, 24 [pid 5627] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5627] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] <... set_robust_list resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5629 attached [pid 5629] set_robust_list(0x55557e59d6e0, 24) = 0 [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5630 attached [pid 5624] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5629 [pid 5629] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] set_robust_list(0x55557e59d6e0, 24 [pid 5628] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5627] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5630 [pid 5628] <... prctl resumed>) = 0 [pid 5628] setpgid(0, 0 [pid 5627] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] <... setpgid resumed>) = 0 [pid 5630] <... set_robust_list resumed>) = 0 [pid 5628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5624] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5627] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5624] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5629] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5624] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5630] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5629] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5631 attached ci2-upstream-fs/strace-static-x86_64: Process 5632 attached [pid 5630] <... prctl resumed>) = 0 [pid 5628] <... openat resumed>) = 3 [pid 5630] setpgid(0, 0 [pid 5628] write(3, "1000", 4 [pid 5624] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5631 [pid 5632] set_robust_list(0x55557e59d6e0, 24 [pid 5631] set_robust_list(0x55557e59d6e0, 24 [pid 5630] <... setpgid resumed>) = 0 [pid 5629] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5632 [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5632] <... set_robust_list resumed>) = 0 [pid 5631] <... set_robust_list resumed>) = 0 [pid 5630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5629] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] <... write resumed>) = 4 [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5628] close(3 [pid 5624] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5632] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] <... openat resumed>) = 3 [pid 5629] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5628] <... close resumed>) = 0 [pid 5624] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5632] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5630] write(3, "1000", 4 [pid 5628] write(1, "executing program\n", 18 [pid 5624] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5632] <... prctl resumed>) = 0 executing program [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5630] <... write resumed>) = 4 [pid 5632] setpgid(0, 0 [pid 5628] <... write resumed>) = 18 [pid 5630] close(3 [pid 5628] mkdirat(AT_FDCWD, "./sys", 0777ci2-upstream-fs/strace-static-x86_64: Process 5633 attached [pid 5632] <... setpgid resumed>) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5630] <... close resumed>) = 0 [pid 5624] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5633 [pid 5633] set_robust_list(0x55557e59d6e0, 24 [pid 5632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5624] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] <... set_robust_list resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5634 attached [pid 5624] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] write(1, "executing program\n", 18) = 18 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 5631] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5634 [pid 5633] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5633] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] set_robust_list(0x55557e59d6e0, 24 [pid 5633] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5628] <... mkdirat resumed>) = 0 [pid 5634] <... set_robust_list resumed>) = 0 [pid 5632] <... openat resumed>) = 3 [pid 5630] <... mkdirat resumed>) = -1 EEXIST (File exists) ci2-upstream-fs/strace-static-x86_64: Process 5635 attached [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5632] write(3, "1000", 4 [pid 5628] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5635] set_robust_list(0x55557e59d6e0, 24 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5635 [pid 5632] <... write resumed>) = 4 [pid 5630] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5635] <... set_robust_list resumed>) = 0 [pid 5634] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5632] close(3 [pid 5628] <... mount resumed>) = 0 [pid 5635] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... prctl resumed>) = 0 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5632] <... close resumed>) = 0 [pid 5630] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5635] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] setpgid(0, 0 executing program [pid 5632] write(1, "executing program\n", 18 [pid 5630] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5628] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] <... setpgid resumed>) = 0 [pid 5632] <... write resumed>) = 18 [pid 5635] <... prctl resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5632] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5630] <... openat resumed>) = 3 [pid 5635] setpgid(0, 0 [pid 5632] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5635] <... setpgid resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5630] write(3, "- - -", 5 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] write(3, "1000", 4 [pid 5632] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5628] <... openat resumed>) = 3 [pid 5635] <... openat resumed>) = 3 [pid 5634] <... write resumed>) = 4 [pid 5635] write(3, "1000", 4 [pid 5634] close(3 [pid 5632] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5628] write(3, "- - -", 5 [pid 5635] <... write resumed>) = 4 [pid 5634] <... close resumed>) = 0 [pid 5634] write(1, "executing program\n", 18 executing program [pid 5635] close(3 [pid 5632] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5635] <... close resumed>) = 0 [pid 5634] <... write resumed>) = 18 [pid 5635] write(1, "executing program\n", 18 executing program [pid 5634] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5635] <... write resumed>) = 18 [pid 5632] <... openat resumed>) = 3 [pid 5635] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5634] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5635] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5634] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5632] write(3, "- - -", 5 [pid 5635] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5634] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5635] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5635] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5634] <... openat resumed>) = 3 [pid 5635] <... openat resumed>) = 3 [pid 5634] write(3, "- - -", 5 [pid 5635] write(3, "- - -", 5 [pid 5626] kill(-5628, SIGKILL) = 0 [pid 5626] kill(5628, SIGKILL) = 0 [pid 5627] kill(-5630, SIGKILL) = 0 [pid 5627] kill(5630, SIGKILL) = 0 [pid 5629] kill(-5632, SIGKILL) = 0 [pid 5629] kill(5632, SIGKILL) = 0 [pid 5631] kill(-5634, SIGKILL) = 0 [pid 5631] kill(5634, SIGKILL) = 0 [pid 5633] kill(-5635, SIGKILL) = 0 [pid 5633] kill(5635, SIGKILL) = 0 [pid 5626] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5626] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5626] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5626] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5626] close(3) = 0 [pid 5627] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5627] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5627] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5627] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5627] close(3) = 0 [pid 5629] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5629] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5629] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5629] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5629] close(3) = 0 [pid 5631] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5631] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5631] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5631] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5631] close(3) = 0 [pid 5633] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5633] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5633] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5633] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5633] close(3) = 0 [pid 5630] <... write resumed>) = ? [pid 5630] +++ killed by SIGKILL +++ [pid 5627] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5630, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5627] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5627] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557e59d6d0) = 5642 ci2-upstream-fs/strace-static-x86_64: Process 5642 attached [pid 5627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5642] set_robust_list(0x55557e59d6e0, 24) = 0 [pid 5642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 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] write(1, "executing program\n", 18) = 18 executing program [pid 5642] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5642] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5642] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5642] write(3, "- - -", 5 [pid 5627] kill(-5642, SIGKILL) = 0 [pid 5627] kill(5642, SIGKILL) = 0 [pid 5627] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5627] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5627] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5627] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5627] close(3) = 0 [pid 5628] <... write resumed>) = ? [pid 5628] +++ killed by SIGKILL +++ [pid 5626] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5628, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5626] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5626] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5643 attached , child_tidptr=0x55557e59d6d0) = 5643 [pid 5643] set_robust_list(0x55557e59d6e0, 24) = 0 [pid 5643] rt_sigprocmask(SIG_SETMASK, [] [pid 5626] rt_sigprocmask(SIG_SETMASK, [] [pid 5643] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5626] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] <... prctl resumed>) = 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 executing program [pid 5643] write(1, "executing program\n", 18) = 18 [pid 5643] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5643] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5643] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5643] write(3, "- - -", 5 [pid 5626] kill(-5643, SIGKILL) = 0 [pid 5626] kill(5643, SIGKILL) = 0 [pid 5626] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5626] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5626] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5626] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5626] close(3) = 0 [pid 5632] <... write resumed>) = ? [pid 5632] +++ killed by SIGKILL +++ [pid 5629] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5632, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5629] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5629] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557e59d6d0) = 5650 ci2-upstream-fs/strace-static-x86_64: Process 5650 attached [pid 5650] set_robust_list(0x55557e59d6e0, 24 [pid 5629] rt_sigprocmask(SIG_SETMASK, [] [pid 5650] <... set_robust_list resumed>) = 0 [pid 5629] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 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] write(1, "executing program\n", 18) = 18 executing program [pid 5650] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5650] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5650] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5650] write(3, "- - -", 5 [pid 5629] kill(-5650, SIGKILL) = 0 [pid 5629] kill(5650, SIGKILL) = 0 [pid 5629] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5629] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5629] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5629] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5629] close(3) = 0 [pid 5634] <... write resumed>) = ? [pid 5634] +++ killed by SIGKILL +++ [pid 5631] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5634, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557e59d6d0) = 5651 ci2-upstream-fs/strace-static-x86_64: Process 5651 attached [pid 5631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5651] set_robust_list(0x55557e59d6e0, 24) = 0 [pid 5651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 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] write(1, "executing program\n", 18) = 18 executing program [pid 5651] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5651] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5651] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5651] write(3, "- - -", 5 [pid 5631] kill(-5651, SIGKILL) = 0 [pid 5631] kill(5651, SIGKILL) = 0 [pid 5631] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5631] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5631] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5631] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5631] close(3) = 0 [pid 5635] <... write resumed>) = ? [pid 5635] +++ killed by SIGKILL +++ [pid 5633] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5635, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5633] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5633] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5658 attached [pid 5658] set_robust_list(0x55557e59d6e0, 24 [pid 5633] <... clone resumed>, child_tidptr=0x55557e59d6d0) = 5658 [pid 5658] <... set_robust_list resumed>) = 0 [pid 5658] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5658] <... rt_sigprocmask resumed>, NULL, 8) = 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] write(1, "executing program\n", 18) = 18 executing program [pid 5658] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5658] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5658] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5658] write(3, "- - -", 5 [pid 5633] kill(-5658, SIGKILL) = 0 [pid 5633] kill(5658, SIGKILL) = 0 [pid 5633] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5633] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5633] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5633] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5633] close(3) = 0 [pid 5642] <... write resumed>) = ? [pid 5642] +++ killed by SIGKILL +++ [pid 5627] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5642, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5627] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5627] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5665 attached , child_tidptr=0x55557e59d6d0) = 5665 [pid 5665] set_robust_list(0x55557e59d6e0, 24 [pid 5627] rt_sigprocmask(SIG_SETMASK, [] [pid 5665] <... set_robust_list resumed>) = 0 [pid 5665] rt_sigprocmask(SIG_SETMASK, [] [pid 5627] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] <... rt_sigprocmask resumed>, NULL, 8) = 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 executing program [pid 5665] write(1, "executing program\n", 18) = 18 [pid 5665] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5665] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5665] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5665] write(3, "- - -", 5 [pid 5627] kill(-5665, SIGKILL) = 0 [pid 5627] kill(5665, SIGKILL) = 0 [pid 5627] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5627] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5627] getdents64(3, 0x55557e59e790 /* 2 entries */, 32768) = 48 [pid 5627] getdents64(3, 0x55557e59e790 /* 0 entries */, 32768) = 0 [pid 5627] close(3) = 0 [ 409.410140][ T37] INFO: task syz-executor149:5650 blocked for more than 143 seconds. [ 409.410179][ T37] Not tainted syzkaller #0 [ 409.410185][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 409.410193][ T37] task:syz-executor149 state:D stack:28264 pid:5650 tgid:5650 ppid:5629 task_flags:0x400140 flags:0x00080002 [ 409.410237][ T37] Call Trace: [ 409.410242][ T37] [ 409.410251][ T37] __schedule+0x16d9/0x5700 [ 409.410424][ T37] ? __pfx___schedule+0x10/0x10 [ 409.410446][ T37] rt_mutex_schedule+0x76/0xf0 [ 409.410487][ T37] rt_mutex_slowlock_block+0x55e/0x690 [ 409.410507][ T37] rt_mutex_slowlock+0x2d4/0x780 [ 409.410520][ T37] ? rt_mutex_slowlock+0x1f2/0x780 [ 409.410532][ T37] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 409.410551][ T37] ? scsi_scan_host_selected+0x19f/0x6c0 [ 409.410618][ T37] ? scsi_scan_host_selected+0x19f/0x6c0 [ 409.410631][ T37] mutex_lock_nested+0x168/0x1d0 [ 409.410645][ T37] scsi_scan_host_selected+0x19f/0x6c0 [ 409.410665][ T37] store_scan+0x4aa/0x540 [ 409.410702][ T37] ? __pfx_store_scan+0x10/0x10 [ 409.410718][ T37] ? lock_acquire+0x115/0x350 [ 409.410732][ T37] ? sysfs_file_kobj+0x1a/0x230 [ 409.410762][ T37] ? sysfs_unbreak_active_protection+0x20/0x40 [ 409.410774][ T37] ? sysfs_file_kobj+0x1a/0x230 [ 409.410783][ T37] ? sysfs_file_kobj+0x1a/0x230 [ 409.410794][ T37] ? sysfs_file_kobj+0x1e4/0x230 [ 409.410805][ T37] ? sysfs_kf_write+0x166/0x260 [ 409.410826][ T37] ? __pfx_sysfs_kf_write+0x10/0x10 [ 409.410837][ T37] kernfs_fop_write_iter+0x3a5/0x540 [ 409.410856][ T37] vfs_write+0x61e/0xbb0 [ 409.410883][ T37] ? __pfx_vfs_write+0x10/0x10 [ 409.410897][ T37] ? rt_spin_unlock+0x159/0x200 [ 409.410911][ T37] ? rt_spin_unlock+0x165/0x200 [ 409.410927][ T37] ksys_write+0x156/0x270 [ 409.410943][ T37] ? __pfx_ksys_write+0x10/0x10 [ 409.410961][ T37] do_syscall_64+0x166/0x520 [ 409.411000][ T37] ? trace_irq_disable+0x3b/0x140 [ 409.411027][ T37] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 409.411053][ T37] ? clear_bhb_loop+0x70/0xc0 [ 409.411066][ T37] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 409.411080][ T37] RIP: 0033:0x7f94330248b9 [ 409.411094][ T37] RSP: 002b:00007ffed6576258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 409.411106][ T37] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f94330248b9 [ 409.411114][ T37] RDX: 0000000000000005 RSI: 0000200000000180 RDI: 0000000000000003 [ 409.411122][ T37] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 409.411130][ T37] R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000024be2 [ 409.411137][ T37] R13: 00007ffed657626c R14: 0000200000000004 R15: 00007ffed6576270 [ 409.411154][ T37] [ 409.411164][ T37] [ 409.411164][ T37] Showing all locks held in the system: [ 409.411174][ T37] locks held by khungtaskd/37: 1, last CPU#0: [ 409.411182][ T37] #0: ffffffff8e1c3c40 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 409.411243][ T37] locks held by kworker/u8:17/3360: 2, on CPU#0: [ 409.411251][ T37] #0: ffff88813ff64138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 [ 409.411287][ T37] #1: ffffc9000f1dfc40 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 [ 409.411320][ T37] locks held by getty/5342: 2, on CPU#0: [ 409.411328][ T37] #0: ffff888036bb20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 409.411427][ T37] #1: ffffc900044cb2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 [ 409.411479][ T37] locks held by syz-executor149/5643: 4, on CPU#1: [ 409.411487][ T37] #0: ffff8880350de510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 409.411516][ T37] #1: ffff888035031478 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 409.411545][ T37] #2: ffff888028488788 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 409.411577][ T37] #3: ffff888027850110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 409.411605][ T37] locks held by syz-executor149/5650: 4, on CPU#1: [ 409.411612][ T37] #0: ffff8880350de510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 409.411640][ T37] #1: ffff888035032078 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 409.411669][ T37] #2: ffff888028488788 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 409.411701][ T37] #3: ffff888027850110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 409.411728][ T37] locks held by syz-executor149/5651: 4, on CPU#1: [ 409.411738][ T37] #0: ffff8880350de510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 409.411766][ T37] #1: ffff888035033478 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 409.411795][ T37] #2: ffff888028488788 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 409.411840][ T37] #3: ffff888027850110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 409.411868][ T37] locks held by syz-executor149/5658: 4, on CPU#1: [ 409.411875][ T37] #0: ffff8880350de510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 409.411903][ T37] #1: ffff888033cb8c78 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 409.411932][ T37] #2: ffff888028488788 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 409.411964][ T37] #3: ffff888027850110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 409.411998][ T37] locks held by syz-executor149/5665: 4, on CPU#1: [ 409.412005][ T37] #0: ffff8880350de510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 409.412033][ T37] #1: ffff888033cbb078 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 409.412062][ T37] #2: ffff888028488788 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 409.412094][ T37] #3: ffff888027850110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 409.412123][ T37] [ 409.412126][ T37] ============================================= [ 409.412126][ T37] [ 409.412138][ T37] NMI backtrace for cpu 0 [ 409.412151][ T37] CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 409.412163][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 409.412169][ T37] Call Trace: [ 409.412173][ T37] [ 409.412178][ T37] dump_stack_lvl+0xe8/0x150 [ 409.412202][ T37] nmi_cpu_backtrace+0x274/0x2d0 [ 409.412251][ T37] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 409.412281][ T37] nmi_trigger_cpumask_backtrace+0x17d/0x390 [ 409.412294][ T37] sys_info+0x135/0x170 [ 409.412304][ T37] watchdog+0xfd7/0x1030 [ 409.412327][ T37] ? watchdog+0x1c7/0x1030 [ 409.412343][ T37] kthread+0x38b/0x470 [ 409.412354][ T37] ? __pfx_watchdog+0x10/0x10 [ 409.412366][ T37] ? __pfx_kthread+0x10/0x10 [ 409.412376][ T37] ret_from_fork+0x514/0xb70 [ 409.412395][ T37] ? __pfx_ret_from_fork+0x10/0x10 [ 409.412405][ T37] ? __switch_to+0xc89/0x1420 [ 409.412421][ T37] ? __pfx_kthread+0x10/0x10 [ 409.412432][ T37] ret_from_fork_asm+0x1a/0x30 [ 409.412449][ T37] [ 409.412453][ T37] Sending NMI from CPU 0 to CPUs 1: [ 409.412499][ C1] NMI backtrace for cpu 1 [ 409.412513][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 409.412531][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 409.412541][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 409.412566][ C1] Code: ac 61 02 e9 93 d8 03 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 cc 12 00 fb f4 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 409.412580][ C1] RSP: 0018:ffffc900001d7e40 EFLAGS: 00000246 [ 409.412595][ C1] RAX: 00000000000e388d RBX: ffffffff819a8000 RCX: 8000000000000001 [ 409.412607][ C1] RDX: 0000000000000001 RSI: ffffffff8d8cb674 RDI: ffffffff8bcc2a80 [ 409.412619][ C1] RBP: ffffc900001d7f10 R08: ffff8880b8733e9b R09: 1ffff110170e67d3 [ 409.412632][ C1] R10: dffffc0000000000 R11: ffffed10170e67d4 R12: 0000000000000000 [ 409.412643][ C1] R13: 1ffff110039d3000 R14: 1ffff9200003afd0 R15: dffffc0000000000 [ 409.412656][ C1] FS: 0000000000000000(0000) GS:ffff888125cce000(0000) knlGS:0000000000000000 [ 409.412670][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 409.412682][ C1] CR2: 000055557e5a6798 CR3: 000000004711a000 CR4: 00000000003526f0 [ 409.412697][ C1] Call Trace: [ 409.412704][ C1] [ 409.412710][ C1] default_idle+0x9/0x20 [ 409.412734][ C1] default_idle_call+0x72/0xb0 [ 409.412759][ C1] do_idle+0x2e0/0x540 [ 409.412782][ C1] ? __pfx_do_idle+0x10/0x10 [ 409.412807][ C1] cpu_startup_entry+0x43/0x60 [ 409.412828][ C1] start_secondary+0x101/0x110 [ 409.412854][ C1] common_startup_64+0x13e/0x157 [ 409.412883][ C1] [ 409.413485][ T37] Kernel panic - not syncing: hung_task: blocked tasks [ 410.266043][ T37] CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 410.275659][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 410.285705][ T37] Call Trace: [ 410.288978][ T37] [ 410.291892][ T37] vpanic+0x56d/0xa60 [ 410.295874][ T37] ? __pfx_vpanic+0x10/0x10 [ 410.300362][ T37] ? console_srcu_read_unlock+0x3a/0x60 [ 410.305911][ T37] panic+0xc5/0xd0 [ 410.309615][ T37] ? __pfx_panic+0x10/0x10 [ 410.314028][ T37] ? wq_watchdog_touch+0xf9/0x160 [ 410.319062][ T37] ? nmi_trigger_cpumask_backtrace+0x24d/0x390 [ 410.325208][ T37] watchdog+0x1030/0x1030 [ 410.329543][ T37] ? watchdog+0x1c7/0x1030 [ 410.333956][ T37] kthread+0x38b/0x470 [ 410.338016][ T37] ? __pfx_watchdog+0x10/0x10 [ 410.342680][ T37] ? __pfx_kthread+0x10/0x10 [ 410.347263][ T37] ret_from_fork+0x514/0xb70 [ 410.351847][ T37] ? __pfx_ret_from_fork+0x10/0x10 [ 410.356942][ T37] ? __switch_to+0xc89/0x1420 [ 410.361610][ T37] ? __pfx_kthread+0x10/0x10 [ 410.366462][ T37] ret_from_fork_asm+0x1a/0x30 [ 410.371243][ T37] [ 410.374512][ T37] Kernel Offset: disabled [ 410.378830][ T37] Rebooting in 86400 seconds..