./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2499459961 <...> Warning: Permanently added '10.128.0.250' (ECDSA) to the list of known hosts. execve("./syz-executor2499459961", ["./syz-executor2499459961"], 0x7ffde0be16f0 /* 10 vars */) = 0 brk(NULL) = 0x5555560f6000 brk(0x5555560f6c40) = 0x5555560f6c40 arch_prctl(ARCH_SET_FS, 0x5555560f6300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2499459961", 4096) = 28 brk(0x555556117c40) = 0x555556117c40 brk(0x555556118000) = 0x555556118000 mprotect(0x7f166fe7b000, 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 3607 attached , child_tidptr=0x5555560f65d0) = 3607 [pid 3607] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3607] setsid() = 1 [pid 3607] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3607] unshare(CLONE_NEWNS) = 0 [pid 3607] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3607] unshare(CLONE_NEWIPC) = 0 [pid 3607] unshare(CLONE_NEWCGROUP) = 0 [pid 3607] unshare(CLONE_NEWUTS) = 0 [pid 3607] unshare(CLONE_SYSVSEM) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "16777216", 8) = 8 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "536870912", 9) = 9 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "8192", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3607] close(3) = 0 [pid 3607] getpid() = 1 [pid 3607] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e8 ee a3 de ff eb d3 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 [ 103.863338][ T11] RSP: 0018:ffffc90000107c50 EFLAGS: 00010293 [ 103.869482][ T11] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 103.877533][ T11] RDX: ffff888011a53a80 RSI: ffffffff81ea5b1b RDI: ffff888079d1f080 [ 103.886042][ T11] RBP: ffff888079d1f000 R08: 0000000000000001 R09: 0000000000000000 [ 103.894006][ T11] R10: 0000000000000001 R11: 000000000008c07e R12: ffff888145fd4000 [ 103.902127][ T11] R13: ffffc90000107c90 R14: ffff888079d1f010 R15: ffff888079d1f018 [ 103.910100][ T11] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 103.919020][ T11] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 103.925589][ T11] CR2: 000055d18dda9288 CR3: 00000000721b7000 CR4: 0000000000350ee0 [ 103.933545][ T11] Call Trace: [ 103.936805][ T11] [ 103.939732][ T11] fsnotify_mark_destroy_workfn+0x22e/0x3c0 [ 103.945737][ T11] ? fsnotify_grab_connector+0x230/0x230 [ 103.951360][ T11] process_one_work+0x9bf/0x1710 [ 103.956432][ T11] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 103.961792][ T11] ? rwlock_bug.part.0+0x90/0x90 [ 103.966775][ T11] ? _raw_spin_lock_irq+0x41/0x50 [ 103.971867][ T11] worker_thread+0x665/0x1080 [ 103.976549][ T11] ? process_one_work+0x1710/0x1710 [ 103.981730][ T11] kthread+0x2e4/0x3a0 [ 103.985832][ T11] ? kthread_complete_and_exit+0x40/0x40 [ 103.991449][ T11] ret_from_fork+0x1f/0x30 [ 103.995898][ T11] [ 103.998914][ T11] Modules linked in: [ 104.003091][ T11] ---[ end trace 0000000000000000 ]--- [ 104.008591][ T11] RIP: 0010:dnotify_free_mark+0x4b/0x60 [ 104.014251][ T11] Code: 80 3c 02 00 75 26 48 83 bd 80 00 00 00 00 75 15 e8 8a 51 92 ff 48 89 ee 48 8b 3d d0 f4 f7 0b 5d e9 4a 62 de ff e8 75 51 92 ff <0f> 0b e8 ee a3 de ff eb d3 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 [ 104.034782][ T11] RSP: 0018:ffffc90000107c50 EFLAGS: 00010293 [pid 3607] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3607, si_uid=0, si_status=1, si_utime=0, si_stime=14} --- exit_group(0) = ? +++ exited with 0 +++ [ 104.041420][ T1