./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4079067788 <...> Warning: Permanently added '10.128.0.35' (ED25519) to the list of known hosts. execve("./syz-executor4079067788", ["./syz-executor4079067788"], 0x7ffc7765e650 /* 10 vars */) = 0 brk(NULL) = 0x555560de2000 brk(0x555560de2d00) = 0x555560de2d00 arch_prctl(ARCH_SET_FS, 0x555560de2380) = 0 set_tid_address(0x555560de2650) = 299 set_robust_list(0x555560de2660, 24) = 0 rseq(0x555560de2ca0, 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-executor4079067788", 4096) = 28 getrandom("\xb7\x92\x4c\xf8\xc1\x77\x32\x3a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555560de2d00 brk(0x555560e03d00) = 0x555560e03d00 brk(0x555560e04000) = 0x555560e04000 mprotect(0x7f7633a33000, 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 300 attached , child_tidptr=0x555560de2650) = 300 [pid 300] set_robust_list(0x555560de2660, 24) = 0 [pid 300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 300] getppid() = 0 [pid 300] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 300] unshare(CLONE_NEWNS) = 0 [pid 300] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 300] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 300] unshare(CLONE_NEWCGROUP) = 0 [pid 300] unshare(CLONE_NEWUTS) = 0 [pid 300] unshare(CLONE_SYSVSEM) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] getpid() = 1 [pid 300] 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 91 17 b2 ff 4c 8d [ 28.602934][ T300] RSP: 0018:ffffc900009c7af0 EFLAGS: 00010293 [ 28.608812][ T300] RAX: ffffffff81be4f0b RBX: ffff8881212cd470 RCX: ffff88810ceb4f00 [ 28.616794][ T300] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 28.624612][ T300] RBP: ffffc900009c7b58 R08: ffffffff81be489f R09: 0000000000000003 [ 28.632423][ T300] R10: fffff52000138f40 R11: dffffc0000000001 R12: ffff8881212cdee0 [ 28.640315][ T300] R13: 1ffff11024259bdc R14: ffff888112145900 R15: dffffc0000000000 [ 28.648134][ T300] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 28.656894][ T300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.663317][ T300] CR2: 0000556a258010c0 CR3: 000000010d0c2000 CR4: 00000000003506a0 [ 28.671136][ T300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.678937][ T300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.686747][ T300] Call Trace: [ 28.689875][ T300] [ 28.692737][ T300] ? __die_body+0x62/0xb0 [ 28.696980][ T300] ? die+0x88/0xb0 [ 28.700460][ T300] ? do_trap+0x103/0x330 [ 28.704541][ T300] ? notify_die+0x1b0/0x280 [ 28.708880][ T300] ? may_delete+0x6eb/0x6f0 [ 28.713220][ T300] ? handle_invalid_op+0x95/0xc0 [ 28.718019][ T300] ? may_delete+0x6eb/0x6f0 [ 28.722332][ T300] ? exc_invalid_op+0x32/0x50 [ 28.726846][ T300] ? asm_exc_invalid_op+0x1b/0x20 [ 28.731706][ T300] ? may_delete+0x7f/0x6f0 [ 28.735963][ T300] ? may_delete+0x6eb/0x6f0 [ 28.740300][ T300] ? may_delete+0x6eb/0x6f0 [ 28.744639][ T300] vfs_rmdir+0x32/0x470 [ 28.748630][ T300] incfs_kill_sb+0x113/0x230 [ 28.753064][ T300] deactivate_locked_super+0xad/0x110 [ 28.758264][ T300] deactivate_super+0xbe/0xf0 [ 28.762779][ T300] cleanup_mnt+0x45c/0x510 [ 28.767038][ T300] __cleanup_mnt+0x19/0x20 [ 28.771379][ T300] task_work_run+0x129/0x190 [ 28.775804][ T300] do_exit+0xc48/0x2ca0 [ 28.779796][ T300] ? put_task_struct+0x80/0x80 [ 28.784396][ T300] ? _raw_spin_unlock_irq+0x4e/0x70 [ 28.789434][ T300] ? ptrace_notify+0x24c/0x350 [ 28.794035][ T300] ? do_notify_parent+0xa30/0xa30 [ 28.798894][ T300] do_group_exit+0x141/0x310 [ 28.803325][ T300] __x64_sys_exit_group+0x3f/0x40 [ 28.808204][ T300] x64_sys_call+0x610/0x9a0 [ 28.812519][ T300] do_syscall_64+0x3b/0xb0 [ 28.816769][ T300] ? clear_bhb_loop+0x35/0x90 [ 28.821281][ T300] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 28.827186][ T300] RIP: 0033:0x7f76339bcec9 [ 28.831525][ T300] Code: Unable to access opcode bytes at RIP 0x7f76339bce9f. [ 28.838726][ T300] RSP: 002b:00007ffe4ea99538 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.846973][ T300] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f76339bcec9 [ 28.854958][ T300] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 28.862770][ T300] RBP: 00007f7633a39370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 28.870581][ T300] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7633a39370 [ 28.878391][ T300] R13: 0000000000000000 R14: 00007f7633a3a0e0 R15: 00007f763398b190 [ 28.886294][ T300] [ 28.889151][ T300] Modules linked in: [ 28.893561][ T300] ---[ end trace 7486a3f08bbf4324 ]--- [ 28.899187][ T300] RIP: 0010:may_delete+0x6eb/0x6f0 [ 28.904162][ T300] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 c6 6f f4 ff e9 72 fe ff ff e8 ac 17 b2 ff 0f 0b e8 a5 17 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 17 b2 ff 4c 8d [ 28.923598][ T300] RSP: 0018:ffffc900009c7af0 EFLAGS: 00010293 [ 28.929468][ T300] RAX: ffffffff81be4f0b RBX: ffff8881212cd470 RCX: ffff88810ceb4f00 [ 28.937305][ T300] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 28.945196][ T300] RBP: ffffc900009c7b58 R08: ffffffff81be489f R09: 0000000000000003 [ 28.953014][ T300] R10: fffff52000138f40 R11: dffffc0000000001 R12: ffff8881212cdee0 [ 28.960799][ T300] R13: 1ffff11024259bdc R14: ffff888112145900 R15: dffffc0000000000 [ 28.968638][ T300] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 28.977394][ T300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.983833][ T300] CR2: 0000556a258010c0 CR3: 000000010d0b3000 CR4: 00000000003506a0 [ 28.991647][ T300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.999420][ T300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.007278][ T300] Kernel panic - not syncing: Fatal exception [ 29.013394][ T300] Kernel Offset: disabled [ 29.017522][ T300] Rebooting in 86400 seconds..