./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1285606194 <...> Warning: Permanently added '10.128.0.216' (ED25519) to the list of known hosts. execve("./syz-executor1285606194", ["./syz-executor1285606194"], 0x7ffd5690bee0 /* 10 vars */) = 0 brk(NULL) = 0x55556fb5f000 brk(0x55556fb5fd00) = 0x55556fb5fd00 arch_prctl(ARCH_SET_FS, 0x55556fb5f380) = 0 set_tid_address(0x55556fb5f650) = 5844 set_robust_list(0x55556fb5f660, 24) = 0 rseq(0x55556fb5fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1285606194", 4096) = 28 getrandom("\xc1\xaa\x2b\x59\x06\x3e\x05\x4a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556fb5fd00 brk(0x55556fb80d00) = 0x55556fb80d00 brk(0x55556fb81000) = 0x55556fb81000 mprotect(0x7f242c01a000, 16384, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached [pid 5845] set_robust_list(0x55556fb5f660, 24 [pid 5844] <... clone resumed>, child_tidptr=0x55556fb5f650) = 5845 [pid 5845] <... set_robust_list resumed>) = 0 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] getppid() = 0 [pid 5845] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5845] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5845] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5845] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5845] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5845] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5845] unshare(CLONE_NEWNS) = 0 [pid 5845] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5845] unshare(CLONE_NEWIPC) = 0 [pid 5845] unshare(CLONE_NEWCGROUP) = 0 [pid 5845] unshare(CLONE_NEWUTS) = 0 [pid 5845] unshare(CLONE_SYSVSEM) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "16777216", 8) = 8 [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "536870912", 9) = 9 [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1024", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "8192", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1024", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1024", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5845] close(3) = 0 [pid 5845] getpid() = 1 [pid 5845] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 88.820852][ T36] RSP: 0018:ffffc90000ac79a8 EFLAGS: 00010293 [ 88.826921][ T36] RAX: ffffffff8248a797 RBX: ffff8880726f4000 RCX: ffff88801fea1e00 [ 88.834877][ T36] RDX: 0000000000000000 RSI: ffffffff8d99260d RDI: ffff8880726f4000 [ 88.842837][ T36] RBP: ffffc90000ac7a70 R08: ffffffff8fa18d37 R09: 1ffffffff1f431a6 [ 88.850806][ T36] R10: dffffc0000000000 R11: ffffffff8248a740 R12: 1ffff1100e4de802 [ 88.858783][ T36] R13: dffffc0000000000 R14: ffff8880726f4080 R15: ffffffff8b9a0b28 [ 88.866744][ T36] FS: 0000000000000000(0000) GS:ffff888125d21000(0000) knlGS:0000000000000000 [ 88.875663][ T36] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.882251][ T36] CR2: 00007f242bfceb78 CR3: 0000000032cce000 CR4: 00000000003526f0 [ 88.890227][ T36] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.898201][ T36] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.906168][ T36] Call Trace: [ 88.909436][ T36] [ 88.912363][ T36] fsnotify_mark_destroy_workfn+0x255/0x2f0 [ 88.918262][ T36] ? __pfx_fsnotify_mark_destroy_workfn+0x10/0x10 [ 88.924694][ T36] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.929898][ T36] ? process_scheduled_works+0x9ef/0x17b0 [ 88.935626][ T36] ? process_scheduled_works+0x9ef/0x17b0 [ 88.941342][ T36] process_scheduled_works+0xade/0x17b0 [ 88.946895][ T36] ? __pfx_process_scheduled_works+0x10/0x10 [ 88.952883][ T36] worker_thread+0x8a0/0xda0 [ 88.957477][ T36] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.963811][ T36] ? __kthread_parkme+0x7b/0x200 [ 88.968749][ T36] kthread+0x711/0x8a0 [ 88.972812][ T36] ? __pfx_worker_thread+0x10/0x10 [ 88.977926][ T36] ? __pfx_kthread+0x10/0x10 [ 88.982510][ T36] ? _raw_spin_unlock_irq+0x23/0x50 [ 88.987707][ T36] ? lockdep_hardirqs_on+0x9c/0x150 [ 88.992907][ T36] ? __pfx_kthread+0x10/0x10 [ 88.997495][ T36] ret_from_fork+0x3fc/0x770 [ 89.002100][ T36] ? __pfx_ret_from_fork+0x10/0x10 [ 89.007217][ T36] ? __switch_to_asm+0x39/0x70 [ 89.011976][ T36] ? __switch_to_asm+0x33/0x70 [ 89.016732][ T36] ? __pfx_kthread+0x10/0x10 [ 89.021319][ T36] ret_from_fork_asm+0x1a/0x30 [ 89.026081][ T36] [ 89.029094][ T36] Modules linked in: [ 89.033553][ T36] ---[ end trace 0000000000000000 ]--- [ 89.040371][ T36] RIP: 0010:dnotify_free_mark+0x58/0x60 [pid 5845] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=1, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- exit_group(0) = ? +++ exited with 0 +++ [ 89.045946][ T36] Code: 89 f7 e8 5b 2a db ff 49 83 3e 00 75 17 e8 00 15 77 ff 48 8b 3d 39 f2 72 0b 48 89 de 5b 41 5e e9 ae 63 d0 ff e8 e9 14 77 ff 90 <0f> 0b cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 89.066177][ T36] RSP: 0018:ffffc90000ac79a8 EFLAGS: 00010293 [ 89.072321][ T36] RAX: ffffffff8248a797 RBX: ffff8880726f4000 RCX: ffff88801fea1e00 [ 89.080390][ T36] RDX: 0000000000000000 RSI: ffffffff8d99260d RDI: ffff8880726f4000 [ 89.088515][ T36] RBP: ffffc90000ac7a70 R08: ffffffff8fa18d37 R09: 1ffffffff1f431a6 [ 89.096505][ T36] R10: dffffc0000000