./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor676107278 <...> Warning: Permanently added '10.128.0.126' (ED25519) to the list of known hosts. execve("./syz-executor676107278", ["./syz-executor676107278"], 0x7fff37c33a20 /* 10 vars */) = 0 brk(NULL) = 0x5555580b2000 brk(0x5555580b2d00) = 0x5555580b2d00 arch_prctl(ARCH_SET_FS, 0x5555580b2380) = 0 set_tid_address(0x5555580b2650) = 5226 set_robust_list(0x5555580b2660, 24) = 0 rseq(0x5555580b2ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor676107278", 4096) = 27 getrandom("\x78\xd6\x0e\xad\x64\xec\x16\x5e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555580b2d00 brk(0x5555580d3d00) = 0x5555580d3d00 brk(0x5555580d4000) = 0x5555580d4000 mprotect(0x7efd8f568000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5227 attached [pid 5227] set_robust_list(0x5555580b2660, 24 [pid 5226] <... clone resumed>, child_tidptr=0x5555580b2650) = 5227 [pid 5227] <... set_robust_list resumed>) = 0 [pid 5227] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5227] setsid() = 1 [pid 5227] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5227] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5227] unshare(CLONE_NEWNS) = 0 [pid 5227] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5227] unshare(CLONE_NEWIPC) = 0 [pid 5227] unshare(CLONE_NEWCGROUP) = 0 [pid 5227] unshare(CLONE_NEWUTS) = 0 [pid 5227] unshare(CLONE_SYSVSEM) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "16777216", 8) = 8 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "536870912", 9) = 9 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "8192", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5227] close(3) = 0 [pid 5227] getpid() = 1 [pid 5227] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 80.152908][ T2976] RSP: 0018:ffffc90009ae7ae8 EFLAGS: 00010293 [ 80.158967][ T2976] RAX: ffffffff821cf0b7 RBX: ffff8880790da080 RCX: ffff88802bce9e00 [ 80.166942][ T2976] RDX: 0000000000000000 RSI: ffffffff8bead560 RDI: ffff8880790da000 [ 80.174904][ T2976] RBP: ffffc90009ae7bb0 R08: ffffffff934f58ff R09: 1ffffffff269eb1f [ 80.182869][ T2976] R10: dffffc0000000000 R11: ffffffff821cf060 R12: ffff8880187b3800 [ 80.190834][ T2976] R13: ffffc90009ae7b40 R14: ffff8880790da000 R15: ffff8880790da000 [ 80.198796][ T2976] FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 [ 80.207717][ T2976] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.214480][ T2976] CR2: 00007f7521d3b095 CR3: 0000000020224000 CR4: 00000000003506f0 [ 80.222462][ T2976] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.230434][ T2976] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.238405][ T2976] Call Trace: [ 80.241679][ T2976] [ 80.244605][ T2976] ? __die_body+0x88/0xe0 [ 80.248942][ T2976] ? die+0xcf/0x110 [ 80.252751][ T2976] ? do_trap+0x15a/0x3a0 [ 80.256994][ T2976] ? dnotify_free_mark+0x58/0x60 [ 80.261927][ T2976] ? do_error_trap+0x1dc/0x2c0 [ 80.266696][ T2976] ? dnotify_free_mark+0x58/0x60 [ 80.271633][ T2976] ? __pfx_do_error_trap+0x10/0x10 [ 80.276760][ T2976] ? handle_invalid_op+0x34/0x40 [ 80.281695][ T2976] ? dnotify_free_mark+0x58/0x60 [ 80.286637][ T2976] ? exc_invalid_op+0x38/0x50 [ 80.291316][ T2976] ? asm_exc_invalid_op+0x1a/0x20 [ 80.296335][ T2976] ? __pfx_dnotify_free_mark+0x10/0x10 [ 80.301786][ T2976] ? dnotify_free_mark+0x57/0x60 [ 80.306719][ T2976] ? dnotify_free_mark+0x58/0x60 [ 80.311654][ T2976] ? dnotify_free_mark+0x57/0x60 [ 80.316587][ T2976] fsnotify_mark_destroy_workfn+0x2cf/0x350 [ 80.322475][ T2976] ? __pfx_fsnotify_mark_destroy_workfn+0x10/0x10 [ 80.329065][ T2976] ? process_scheduled_works+0x945/0x1830 [ 80.334785][ T2976] process_scheduled_works+0xa2c/0x1830 [ 80.340347][ T2976] ? __pfx_process_scheduled_works+0x10/0x10 [ 80.346329][ T2976] ? assign_work+0x364/0x3d0 [ 80.350917][ T2976] worker_thread+0x86d/0xd10 [ 80.355512][ T2976] ? __kthread_parkme+0x169/0x1d0 [ 80.360546][ T2976] ? __pfx_worker_thread+0x10/0x10 [ 80.365658][ T2976] kthread+0x2f0/0x390 [ 80.369727][ T2976] ? __pfx_worker_thread+0x10/0x10 [ 80.374837][ T2976] ? __pfx_kthread+0x10/0x10 [pid 5227] +++ exited with 1 +++ [ 80.379442][ T2976] ret_from_fork+0x4b/0x80 [ 80.383857][ T2976] ? __pfx_kthread+0x10/0x10 [ 80.388447][ T2976] ret_from_fork_asm+0x1a/0x30 [ 80.393222][ T2976] [ 80.396242][ T2976] Modules linked in: [ 80.402981][ T2976] ---[ end trace 0000000000000000 ]--- [ 80.408540][ T2976] RIP: 0010:dnotify_free_mark+0x58/0x60 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5227, si_uid=0, si_status=1, si_utime=0, si_stime=27 /* 0.27 s */} --- exit_group(0) = ? +++ exited with 0 +++ [ 80.414134][ T2976] Code: 89 df e8 eb b7 da ff 48 83 3b 00 75 17 e8 00 9b 76 ff 48 8b 3d 91 47 eb 0b 4c 89 f6 5b 41 5e e9 5e 0a cf ff e8 e9 9a 76 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 9