./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor156778393 <...> Warning: Permanently added '10.128.0.157' (ED25519) to the list of known hosts. execve("./syz-executor156778393", ["./syz-executor156778393"], 0x7fffe63fbf00 /* 10 vars */) = 0 brk(NULL) = 0x555564584000 brk(0x555564584d00) = 0x555564584d00 arch_prctl(ARCH_SET_FS, 0x555564584380) = 0 set_tid_address(0x555564584650) = 290 set_robust_list(0x555564584660, 24) = 0 rseq(0x555564584ca0, 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-executor156778393", 4096) = 27 getrandom("\xb2\x75\xf3\x55\x3e\x3d\x84\xf5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555564584d00 brk(0x5555645a5d00) = 0x5555645a5d00 brk(0x5555645a6000) = 0x5555645a6000 mprotect(0x7fa0b9cc5000, 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=0x555564584650) = 291 ./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x555564584660, 24) = 0 [pid 291] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 291] setsid() = 1 [pid 291] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 291] unshare(CLONE_NEWNS) = 0 [pid 291] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 291] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 291] unshare(CLONE_NEWCGROUP) = 0 [pid 291] unshare(CLONE_NEWUTS) = 0 [pid 291] unshare(CLONE_SYSVSEM) = 0 [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] getpid() = 1 [pid 291] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 [ 24.092392][ T291] RSP: 0018:ffffc90000b67ad8 EFLAGS: 00010293 [ 24.098297][ T291] RAX: ffffffff81b414b5 RBX: ffff88811cb05580 RCX: ffff888120630000 [ 24.106192][ T291] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.113993][ T291] RBP: ffffc90000b67b58 R08: ffffffff81b40dd3 R09: 0000000000000003 [ 24.121894][ T291] R10: fffff5200016cf40 R11: dffffc0000000001 R12: 0000000000000001 [ 24.129702][ T291] R13: ffff88811cabaaa0 R14: ffff8881105ec878 R15: dffffc0000000000 [ 24.137517][ T291] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.146303][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.152703][ T291] CR2: 00007fa0b9cc9130 CR3: 000000010cf17000 CR4: 00000000003506b0 [ 24.160518][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.168330][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.176133][ T291] Call Trace: [ 24.179357][ T291] ? __die_body+0x62/0xb0 [ 24.183514][ T291] ? die+0x88/0xb0 [ 24.187072][ T291] ? do_trap+0x1a4/0x310 [ 24.191159][ T291] ? may_delete+0x755/0x760 [ 24.195494][ T291] ? handle_invalid_op+0x95/0xc0 [ 24.200267][ T291] ? may_delete+0x755/0x760 [ 24.204606][ T291] ? exc_invalid_op+0x32/0x50 [ 24.209122][ T291] ? asm_exc_invalid_op+0x12/0x20 [ 24.213977][ T291] ? may_delete+0x73/0x760 [ 24.218231][ T291] ? may_delete+0x755/0x760 [ 24.222570][ T291] ? may_delete+0x755/0x760 [ 24.226996][ T291] ? may_delete+0x755/0x760 [ 24.231335][ T291] vfs_rmdir+0x2c/0x3f0 [ 24.235333][ T291] incfs_kill_sb+0x108/0x220 [ 24.239768][ T291] deactivate_locked_super+0xad/0x110 [ 24.244990][ T291] deactivate_super+0xbe/0xf0 [ 24.249482][ T291] cleanup_mnt+0x45c/0x510 [ 24.253732][ T291] __cleanup_mnt+0x19/0x20 [ 24.257984][ T291] task_work_run+0x129/0x190 [ 24.262431][ T291] do_exit+0xc83/0x2a50 [ 24.266493][ T291] ? put_task_struct+0x80/0x80 [ 24.271095][ T291] ? _raw_spin_unlock_irq+0x4e/0x70 [ 24.276167][ T291] ? ptrace_notify+0x24c/0x350 [ 24.280734][ T291] ? do_notify_parent+0xa10/0xa10 [ 24.285592][ T291] ? debug_smp_processor_id+0x17/0x20 [ 24.290812][ T291] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 24.296729][ T291] do_group_exit+0x141/0x310 [ 24.301134][ T291] __x64_sys_exit_group+0x3f/0x40 [ 24.305997][ T291] do_syscall_64+0x34/0x70 [ 24.310236][ T291] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.315971][ T291] RIP: 0033:0x7fa0b9c4ee09 [ 24.320216][ T291] Code: Unable to access opcode bytes at RIP 0x7fa0b9c4eddf. [ 24.327411][ T291] RSP: 002b:00007ffe046f9148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.335656][ T291] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fa0b9c4ee09 [ 24.343479][ T291] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 24.351279][ T291] RBP: 00007fa0b9ccb370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 24.359093][ T291] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa0b9ccb370 [ 24.366903][ T291] R13: 0000000000000000 R14: 00007fa0b9ccc0e0 R15: 00007fa0b9c1d0d0 [ 24.374712][ T291] Modules linked in: [ 24.378544][ T291] ---[ end trace a12bda5cf3db719a ]--- [ 24.383769][ T291] RIP: 0010:may_delete+0x755/0x760 [ 24.388854][ T291] Code: 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c db fd ff ff 4c 89 ef e8 1c 32 f4 ff e9 ce fd ff ff e8 32 98 b6 ff 0f 0b e8 2b 98 b6 ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 [ 24.408315][ T291] RSP: 0018:ffffc90000b67ad8 EFLAGS: 00010293 [ 24.414140][ T291] RAX: ffffffff81b414b5 RBX: ffff88811cb05580 RCX: ffff888120630000 [ 24.421958][ T291] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.429771][ T291] RBP: ffffc90000b67b58 R08: ffffffff81b40dd3 R09: 0000000000000003 [ 24.437577][ T291] R10: fffff5200016cf40 R11: dffffc0000000001 R12: 0000000000000001 [ 24.445436][ T291] R13: ffff88811cabaaa0 R14: ffff8881105ec878 R15: dffffc0000000000 [ 24.453215][ T291] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.461968][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.468384][ T291] CR2: 00007fa0b9cc9130 CR3: 000000010cf17000 CR4: 00000000003506b0 [ 24.476174][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.484017][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.491817][ T291] Kernel panic - not syncing: Fatal exception [ 24.497915][ T291] Kernel Offset: disabled [ 24.502032][ T291] Rebooting in 86400 seconds..