[ 34.849844][ T26] audit: type=1800 audit(1555111045.496:27): pid=7312 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 34.869561][ T26] audit: type=1800 audit(1555111045.506:28): pid=7312 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 35.790717][ T26] audit: type=1800 audit(1555111046.496:29): pid=7312 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 35.812019][ T26] audit: type=1800 audit(1555111046.516:30): pid=7312 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.51' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.591550][ T7466] WARNING: CPU: 1 PID: 7466 at kernel/kthread.c:398 __kthread_bind_mask+0x3b/0xc0 [ 55.600756][ T7466] Kernel panic - not syncing: panic_on_warn set ... [ 55.607492][ T7466] CPU: 1 PID: 7466 Comm: syz-executor404 Not tainted 5.1.0-rc4+ #65 [ 55.615450][ T7466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.625496][ T7466] Call Trace: [ 55.628773][ T7466] dump_stack+0x172/0x1f0 [ 55.633194][ T7466] ? __kthread_cancel_work+0x280/0x2e0 [ 55.638648][ T7466] panic+0x2cb/0x65c [ 55.642672][ T7466] ? __warn_printk+0xf3/0xf3 [ 55.647246][ T7466] ? __kthread_bind_mask+0x3b/0xc0 [ 55.652338][ T7466] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.658639][ T7466] ? __warn.cold+0x5/0x45 [ 55.662955][ T7466] ? __warn+0xe8/0x1d0 [ 55.667005][ T7466] ? __kthread_bind_mask+0x3b/0xc0 [ 55.672095][ T7466] __warn.cold+0x20/0x45 [ 55.676318][ T7466] ? __kthread_bind_mask+0x3b/0xc0 [ 55.681576][ T7466] report_bug+0x263/0x2b0 [ 55.685885][ T7466] do_error_trap+0x11b/0x200 [ 55.690454][ T7466] do_invalid_op+0x37/0x50 [ 55.694849][ T7466] ? __kthread_bind_mask+0x3b/0xc0 [ 55.699937][ T7466] invalid_op+0x14/0x20 [ 55.704072][ T7466] RIP: 0010:__kthread_bind_mask+0x3b/0xc0 [ 55.709773][ T7466] Code: 48 89 fb e8 27 88 24 00 4c 89 e6 48 89 df e8 dc e7 02 00 31 ff 49 89 c4 48 89 c6 e8 af 89 24 00 4d 85 e4 75 15 e8 05 88 24 00 <0f> 0b e8 fe 87 24 00 5b 41 5c 41 5d 41 5e 5d c3 e8 f0 87 24 00 4c [ 55.729362][ T7466] RSP: 0018:ffff888098e9fbb8 EFLAGS: 00010293 [ 55.735412][ T7466] RAX: ffff888093b4c540 RBX: ffff8880a489c600 RCX: ffffffff814c06f1 [ 55.743369][ T7466] RDX: 0000000000000000 RSI: ffffffff814c06fb RDI: 0000000000000007 [ 55.751331][ T7466] RBP: ffff888098e9fbd8 R08: ffff888093b4c540 R09: 0000000000000000 [ 55.759283][ T7466] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 55.767237][ T7466] R13: ffffffff87691088 R14: ffff8880a489c620 R15: ffffffff81c801d0 [ 55.775322][ T7466] ? io_ring_ctx_wait_and_kill+0x510/0x510 [ 55.781131][ T7466] ? __kthread_bind_mask+0x31/0xc0 [ 55.786224][ T7466] ? __kthread_bind_mask+0x3b/0xc0 [ 55.791317][ T7466] ? __kthread_bind_mask+0x3b/0xc0 [ 55.796585][ T7466] kthread_unpark+0x123/0x160 [ 55.801249][ T7466] kthread_stop+0xfa/0x6c0 [ 55.805643][ T7466] io_finish_async+0xab/0x180 [ 55.810296][ T7466] io_ring_ctx_wait_and_kill+0x133/0x510 [ 55.815919][ T7466] io_uring_release+0x42/0x50 [ 55.820600][ T7466] __fput+0x2e5/0x8d0 [ 55.824652][ T7466] ____fput+0x16/0x20 [ 55.828614][ T7466] task_work_run+0x14a/0x1c0 [ 55.833183][ T7466] do_exit+0x90a/0x2fa0 [ 55.837478][ T7466] ? mm_update_next_owner+0x640/0x640 [ 55.842849][ T7466] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.848288][ T7466] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.853727][ T7466] do_group_exit+0x135/0x370 [ 55.858297][ T7466] __x64_sys_exit_group+0x44/0x50 [ 55.863305][ T7466] do_syscall_64+0x103/0x610 [ 55.867882][ T7466] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.873755][ T7466] RIP: 0033:0x43ee98 [ 55.877638][ T7466] Code: Bad RIP value. [ 55.881924][ T7466] RSP: 002b:00007ffc81c31d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 55.890322][ T7466] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee98 [ 55.898273][ T7466] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 55.906222][ T7466] RBP: 00000000004be6a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 55.914281][ T7466] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 55.922241][ T7466] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 55.931301][ T7466] Kernel Offset: disabled [ 55.935771][ T7466] Rebooting in 86400 seconds..