./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4284818193 <...> Warning: Permanently added '10.128.1.247' (ED25519) to the list of known hosts. execve("./syz-executor4284818193", ["./syz-executor4284818193"], 0x7ffc4f84d6e0 /* 10 vars */) = 0 brk(NULL) = 0x555555b77000 brk(0x555555b77d00) = 0x555555b77d00 arch_prctl(ARCH_SET_FS, 0x555555b77380) = 0 set_tid_address(0x555555b77650) = 299 set_robust_list(0x555555b77660, 24) = 0 rseq(0x555555b77ca0, 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-executor4284818193", 4096) = 28 getrandom("\xec\xf0\x87\x2e\x9f\x95\xb6\x43", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555b77d00 brk(0x555555b98d00) = 0x555555b98d00 brk(0x555555b99000) = 0x555555b99000 mprotect(0x7f486ddae000, 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 getpid() = 299 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "299", 3) = 3 close(3) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b77650) = 300 ./strace-static-x86_64: Process 300 attached [pid 300] set_robust_list(0x555555b77660, 24) = 0 [pid 300] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 300] setsid() = 1 [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 b1 64 ac ff 4c 8d [ 25.750584][ T300] RSP: 0018:ffffc90000ea7a58 EFLAGS: 00010293 [ 25.756487][ T300] RAX: ffffffff81c9210b RBX: ffff88811f990250 RCX: ffff888109726540 [ 25.764296][ T300] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 25.772106][ T300] RBP: ffffc90000ea7ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 25.779918][ T300] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88811f990110 [ 25.787728][ T300] R13: 1ffff11023f32022 R14: ffff88810056c608 R15: dffffc0000000000 [ 25.795545][ T300] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.804309][ T300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.810729][ T300] CR2: 0000556769ac0ca8 CR3: 000000010fe29000 CR4: 00000000003506b0 [ 25.818651][ T300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.826466][ T300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.834271][ T300] Call Trace: [ 25.837405][ T300] [ 25.840174][ T300] ? __die_body+0x62/0xb0 [ 25.844339][ T300] ? die+0x88/0xb0 [ 25.847897][ T300] ? do_trap+0x103/0x330 [ 25.851977][ T300] ? may_delete+0x6eb/0x6f0 [ 25.856318][ T300] ? handle_invalid_op+0x95/0xc0 [ 25.861087][ T300] ? may_delete+0x6eb/0x6f0 [ 25.865430][ T300] ? exc_invalid_op+0x32/0x50 [ 25.869944][ T300] ? asm_exc_invalid_op+0x1b/0x20 [ 25.874803][ T300] ? may_delete+0x7f/0x6f0 [ 25.879055][ T300] ? may_delete+0x6eb/0x6f0 [ 25.883395][ T300] ? may_delete+0x6eb/0x6f0 [ 25.887735][ T300] ? may_delete+0x6eb/0x6f0 [ 25.892076][ T300] vfs_rmdir+0x32/0x500 [ 25.896066][ T300] ? generic_shutdown_super+0x2b8/0x370 [ 25.901453][ T300] incfs_kill_sb+0x113/0x230 [ 25.905874][ T300] deactivate_locked_super+0xad/0x110 [ 25.911082][ T300] deactivate_super+0xbe/0xf0 [ 25.915594][ T300] cleanup_mnt+0x485/0x510 [ 25.919848][ T300] __cleanup_mnt+0x19/0x20 [ 25.924099][ T300] task_work_run+0x24d/0x2e0 [ 25.928526][ T300] ? kmem_cache_free+0x291/0x510 [ 25.933301][ T300] ? task_work_cancel+0x2b0/0x2b0 [ 25.938159][ T300] ? free_nsproxy+0x20d/0x260 [ 25.942674][ T300] ? exit_task_namespaces+0xb4/0xd0 [ 25.947707][ T300] do_exit+0xbd5/0x2b80 [ 25.951707][ T300] ? put_task_struct+0x80/0x80 [ 25.956301][ T300] ? __kasan_check_write+0x14/0x20 [ 25.961247][ T300] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 25.966193][ T300] ? _raw_spin_lock_irqsave+0x210/0x210 [ 25.971575][ T300] ? zap_other_threads+0x29c/0x2d0 [ 25.976524][ T300] do_group_exit+0x21a/0x2d0 [ 25.980953][ T300] __x64_sys_exit_group+0x3f/0x40 [ 25.985812][ T300] do_syscall_64+0x3d/0xb0 [ 25.990063][ T300] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 25.995820][ T300] RIP: 0033:0x7f486dd380c9 [ 26.000043][ T300] Code: Unable to access opcode bytes at 0x7f486dd3809f. [ 26.006899][ T300] RSP: 002b:00007fff7d89b6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 26.015285][ T300] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f486dd380c9 [ 26.023089][ T300] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 26.030904][ T300] RBP: 00007f486ddb4370 R08: ffffffffffffffb8 R09: 00007f486dd830cc [ 26.038710][ T300] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f486ddb4370 [ 26.046523][ T300] R13: 0000000000000000 R14: 00007f486ddb50e0 R15: 00007f486dd06380 [ 26.054339][ T300] [ 26.057207][ T300] Modules linked in: [ 26.061125][ T300] ---[ end trace 0000000000000000 ]--- [ 26.066386][ T300] RIP: 0010:may_delete+0x6eb/0x6f0 [ 26.071373][ T300] 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 [ 26.090927][ T300] RSP: 0018:ffffc90000ea7a58 EFLAGS: 00010293 [ 26.096797][ T300] RAX: ffffffff81c9210b RBX: ffff88811f990250 RCX: ffff888109726540 [ 26.104843][ T300] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 26.112683][ T300] RBP: ffffc90000ea7ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 26.120466][ T300] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88811f990110 [ 26.128288][ T300] R13: 1ffff11023f32022 R14: ffff88810056c608 R15: dffffc0000000000 [ 26.136060][ T300] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.144864][ T300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.151292][ T300] CR2: 0000556769ac0ca8 CR3: 000000010e7af000 CR4: 00000000003506b0 [ 26.159095][ T300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.166885][ T300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.174721][ T300] Kernel panic - not syncing: Fatal exception [ 26.180955][ T300] Kernel Offset: disabled [ 26.185079][ T300] Rebooting in 86400 seconds..