./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4175654900 <...> Warning: Permanently added '10.128.1.82' (ED25519) to the list of known hosts. execve("./syz-executor4175654900", ["./syz-executor4175654900"], 0x7ffeb969b4e0 /* 10 vars */) = 0 brk(NULL) = 0x55556d7fa000 brk(0x55556d7fad00) = 0x55556d7fad00 arch_prctl(ARCH_SET_FS, 0x55556d7fa380) = 0 set_tid_address(0x55556d7fa650) = 294 set_robust_list(0x55556d7fa660, 24) = 0 rseq(0x55556d7faca0, 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-executor4175654900", 4096) = 28 getrandom("\xc2\x1b\x6a\x67\x34\x9d\x99\x92", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556d7fad00 brk(0x55556d81bd00) = 0x55556d81bd00 brk(0x55556d81c000) = 0x55556d81c000 mprotect(0x7f432ab19000, 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, child_tidptr=0x55556d7fa650) = 295 ./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x55556d7fa660, 24) = 0 [pid 295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 295] getppid() = 0 [pid 295] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 295] unshare(CLONE_NEWNS) = 0 [pid 295] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 295] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 295] unshare(CLONE_NEWCGROUP) = 0 [pid 295] unshare(CLONE_NEWUTS) = 0 [pid 295] unshare(CLONE_SYSVSEM) = 0 [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] getpid() = 1 [pid 295] 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 02 b2 ff 4c 8d [ 23.157507][ T295] RSP: 0018:ffffc90000957af0 EFLAGS: 00010293 [ 23.163474][ T295] RAX: ffffffff81be69eb RBX: ffff888109bc6030 RCX: ffff88810ce84f00 [ 23.171335][ T295] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.179142][ T295] RBP: ffffc90000957b58 R08: ffffffff81be637f R09: 0000000000000003 [ 23.186985][ T295] R10: fffff5200012af40 R11: dffffc0000000001 R12: ffff888109bc6ee0 [ 23.194769][ T295] R13: 1ffff11021378ddc R14: ffff8881111af060 R15: dffffc0000000000 [ 23.202574][ T295] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.211435][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.217854][ T295] CR2: 000055a562a12228 CR3: 000000010cc75000 CR4: 00000000003506b0 [ 23.225666][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.233575][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.241650][ T295] Call Trace: [ 23.244871][ T295] [ 23.247646][ T295] ? __die_body+0x62/0xb0 [ 23.251813][ T295] ? die+0x88/0xb0 [ 23.255372][ T295] ? do_trap+0x103/0x330 [ 23.259451][ T295] ? may_delete+0x6eb/0x6f0 [ 23.263787][ T295] ? handle_invalid_op+0x95/0xc0 [ 23.268562][ T295] ? may_delete+0x6eb/0x6f0 [ 23.273481][ T295] ? exc_invalid_op+0x32/0x50 [ 23.277991][ T295] ? asm_exc_invalid_op+0x1b/0x20 [ 23.282854][ T295] ? may_delete+0x7f/0x6f0 [ 23.287281][ T295] ? may_delete+0x6eb/0x6f0 [ 23.291623][ T295] ? may_delete+0x6eb/0x6f0 [ 23.295959][ T295] vfs_rmdir+0x32/0x470 [ 23.299952][ T295] incfs_kill_sb+0x113/0x230 [ 23.304399][ T295] deactivate_locked_super+0xad/0x110 [ 23.309629][ T295] deactivate_super+0xbe/0xf0 [ 23.314107][ T295] cleanup_mnt+0x45c/0x510 [ 23.318366][ T295] __cleanup_mnt+0x19/0x20 [ 23.322616][ T295] task_work_run+0x129/0x190 [ 23.327509][ T295] do_exit+0xc48/0x2ca0 [ 23.331470][ T295] ? put_task_struct+0x80/0x80 [ 23.336154][ T295] ? _raw_spin_unlock_irq+0x4e/0x70 [ 23.341271][ T295] ? ptrace_notify+0x24c/0x350 [ 23.346033][ T295] ? do_notify_parent+0xa30/0xa30 [ 23.350879][ T295] do_group_exit+0x141/0x310 [ 23.355295][ T295] __x64_sys_exit_group+0x3f/0x40 [ 23.360327][ T295] x64_sys_call+0x610/0x9a0 [ 23.364669][ T295] do_syscall_64+0x3b/0xb0 [ 23.368928][ T295] ? clear_bhb_loop+0x35/0x90 [ 23.373453][ T295] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.379166][ T295] RIP: 0033:0x7f432aaa2f09 [ 23.383415][ T295] Code: Unable to access opcode bytes at RIP 0x7f432aaa2edf. [ 23.390710][ T295] RSP: 002b:00007ffd3cf904d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 23.399066][ T295] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f432aaa2f09 [ 23.406982][ T295] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 23.414776][ T295] RBP: 00007f432ab1f370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 23.422666][ T295] R10: 0000000000000147 R11: 0000000000000246 R12: 00007f432ab1f370 [ 23.430477][ T295] R13: 0000000000000000 R14: 00007f432ab200e0 R15: 00007f432aa711c0 [ 23.438309][ T295] [ 23.441152][ T295] Modules linked in: [ 23.445335][ T295] ---[ end trace bd1fac92b5a84f87 ]--- [ 23.450673][ T295] RIP: 0010:may_delete+0x6eb/0x6f0 [ 23.455775][ T295] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 d6 6d f4 ff e9 72 fe ff ff e8 cc 02 b2 ff 0f 0b e8 c5 02 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 b1 02 b2 ff 4c 8d [ 23.475513][ T295] RSP: 0018:ffffc90000957af0 EFLAGS: 00010293 [ 23.481462][ T295] RAX: ffffffff81be69eb RBX: ffff888109bc6030 RCX: ffff88810ce84f00 [ 23.489281][ T295] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.497037][ T295] RBP: ffffc90000957b58 R08: ffffffff81be637f R09: 0000000000000003 [ 23.504897][ T295] R10: fffff5200012af40 R11: dffffc0000000001 R12: ffff888109bc6ee0 [ 23.512683][ T295] R13: 1ffff11021378ddc R14: ffff8881111af060 R15: dffffc0000000000 [ 23.520505][ T295] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.529261][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.535664][ T295] CR2: 000055a562a12228 CR3: 000000011885b000 CR4: 00000000003506b0 [ 23.543524][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.551330][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.559291][ T295] Kernel panic - not syncing: Fatal exception [ 23.565483][ T295] Kernel Offset: disabled [ 23.569616][ T295] Rebooting in 86400 seconds..