./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor104608352 <...> Warning: Permanently added '10.128.0.234' (ED25519) to the list of known hosts. execve("./syz-executor104608352", ["./syz-executor104608352"], 0x7fff072d6510 /* 10 vars */) = 0 brk(NULL) = 0x5555571ff000 brk(0x5555571ffd00) = 0x5555571ffd00 arch_prctl(ARCH_SET_FS, 0x5555571ff380) = 0 set_tid_address(0x5555571ff650) = 298 set_robust_list(0x5555571ff660, 24) = 0 rseq(0x5555571ffca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor104608352", 4096) = 27 getrandom("\xb1\x98\xd6\xb5\x9c\x0f\x24\x7d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555571ffd00 brk(0x555557220d00) = 0x555557220d00 brk(0x555557221000) = 0x555557221000 mprotect(0x7f78c95b5000, 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, child_tidptr=0x5555571ff650) = 299 ./strace-static-x86_64: Process 299 attached [pid 299] set_robust_list(0x5555571ff660, 24) = 0 [pid 299] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 299] setsid() = 1 [pid 299] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 299] unshare(CLONE_NEWNS) = 0 [pid 299] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 299] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 299] unshare(CLONE_NEWCGROUP) = 0 [pid 299] unshare(CLONE_NEWUTS) = 0 [pid 299] unshare(CLONE_SYSVSEM) = 0 [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] getpid() = 1 [pid 299] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 b1 64 ac ff 4c 8d [ 24.795116][ T299] RSP: 0018:ffffc90000e17a58 EFLAGS: 00010293 [ 24.801006][ T299] RAX: ffffffff81c9210b RBX: ffff88812057dad0 RCX: ffff8881094ed100 [ 24.808826][ T299] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.816632][ T299] RBP: ffffc90000e17ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 24.824439][ T299] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888120580660 [ 24.832260][ T299] R13: 1ffff110240b00cc R14: ffff888100567980 R15: dffffc0000000000 [ 24.840060][ T299] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.848829][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.855251][ T299] CR2: 00007f78c9589a38 CR3: 0000000006e0f000 CR4: 00000000003506b0 [ 24.863067][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.870960][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.878771][ T299] Call Trace: [ 24.881898][ T299] [ 24.884679][ T299] ? __die_body+0x62/0xb0 [ 24.888840][ T299] ? die+0x88/0xb0 [ 24.892397][ T299] ? do_trap+0x103/0x330 [ 24.896477][ T299] ? may_delete+0x6eb/0x6f0 [ 24.900820][ T299] ? handle_invalid_op+0x95/0xc0 [ 24.905589][ T299] ? may_delete+0x6eb/0x6f0 [ 24.910277][ T299] ? exc_invalid_op+0x32/0x50 [ 24.914809][ T299] ? asm_exc_invalid_op+0x1b/0x20 [ 24.919652][ T299] ? may_delete+0x7f/0x6f0 [ 24.923906][ T299] ? may_delete+0x6eb/0x6f0 [ 24.928252][ T299] ? may_delete+0x6eb/0x6f0 [ 24.932594][ T299] ? may_delete+0x6eb/0x6f0 [ 24.936937][ T299] vfs_rmdir+0x32/0x500 [ 24.940915][ T299] ? generic_shutdown_super+0x2b8/0x370 [ 24.946299][ T299] incfs_kill_sb+0x113/0x230 [ 24.950723][ T299] deactivate_locked_super+0xad/0x110 [ 24.955933][ T299] deactivate_super+0xbe/0xf0 [ 24.960443][ T299] cleanup_mnt+0x485/0x510 [ 24.964698][ T299] __cleanup_mnt+0x19/0x20 [ 24.968949][ T299] task_work_run+0x24d/0x2e0 [ 24.973374][ T299] ? kmem_cache_free+0x291/0x510 [ 24.978148][ T299] ? task_work_cancel+0x2b0/0x2b0 [ 24.983012][ T299] ? free_nsproxy+0x20d/0x260 [ 24.987545][ T299] ? exit_task_namespaces+0xb4/0xd0 [ 24.992557][ T299] do_exit+0xbd5/0x2b80 [ 24.996564][ T299] ? put_task_struct+0x80/0x80 [ 25.001150][ T299] ? __kasan_check_write+0x14/0x20 [ 25.006191][ T299] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 25.011134][ T299] ? _raw_spin_lock_irqsave+0x210/0x210 [ 25.016513][ T299] ? zap_other_threads+0x29c/0x2d0 [ 25.021547][ T299] do_group_exit+0x21a/0x2d0 [ 25.025977][ T299] __x64_sys_exit_group+0x3f/0x40 [ 25.030836][ T299] do_syscall_64+0x3d/0xb0 [ 25.035087][ T299] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 25.040815][ T299] RIP: 0033:0x7f78c953d549 [ 25.045070][ T299] Code: Unable to access opcode bytes at 0x7f78c953d51f. [ 25.052013][ T299] RSP: 002b:00007ffc4016c148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 25.060258][ T299] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f78c953d549 [ 25.068215][ T299] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 25.076021][ T299] RBP: 00007f78c95bb370 R08: ffffffffffffffb8 R09: 0000000000000000 [ 25.083831][ T299] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78c95bb370 [ 25.091791][ T299] R13: 0000000000000000 R14: 00007f78c95bd140 R15: 00007f78c950b660 [ 25.099723][ T299] [ 25.102553][ T299] Modules linked in: [ 25.106621][ T299] ---[ end trace 0000000000000000 ]--- [ 25.111930][ T299] RIP: 0010:may_delete+0x6eb/0x6f0 [ 25.116835][ T299] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 66 71 f3 ff e9 72 fe ff ff e8 cc 64 ac ff 0f 0b e8 c5 64 ac ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 b1 64 ac ff 4c 8d [ 25.136363][ T299] RSP: 0018:ffffc90000e17a58 EFLAGS: 00010293 [ 25.142221][ T299] RAX: ffffffff81c9210b RBX: ffff88812057dad0 RCX: ffff8881094ed100 [ 25.150026][ T299] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 25.157799][ T299] RBP: ffffc90000e17ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 25.165821][ T299] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888120580660 [ 25.173615][ T299] R13: 1ffff110240b00cc R14: ffff888100567980 R15: dffffc0000000000 [ 25.181433][ T299] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.190198][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.196592][ T299] CR2: 00007f78c9589a38 CR3: 000000010e73d000 CR4: 00000000003506b0 [ 25.204434][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.212247][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.220066][ T299] Kernel panic - not syncing: Fatal exception [ 25.226197][ T299] Kernel Offset: disabled [ 25.230321][ T299] Rebooting in 86400 seconds..