[ 34.673391][ T26] audit: type=1800 audit(1555112063.951:27): pid=7496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 34.695462][ T26] audit: type=1800 audit(1555112063.951:28): pid=7496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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. [ 35.729030][ T26] audit: type=1800 audit(1555112065.061:29): pid=7496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 35.749489][ T26] audit: type=1800 audit(1555112065.061:30): pid=7496 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.178' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.396695][ T7649] WARNING: CPU: 0 PID: 7649 at kernel/kthread.c:398 __kthread_bind_mask+0x3b/0xc0 [ 48.405932][ T7649] Kernel panic - not syncing: panic_on_warn set ... [ 48.412552][ T7649] CPU: 0 PID: 7649 Comm: syz-executor475 Not tainted 5.1.0-rc4+ #64 [ 48.420557][ T7649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.430590][ T7649] Call Trace: [ 48.433888][ T7649] dump_stack+0x172/0x1f0 [ 48.438200][ T7649] ? __kthread_cancel_work+0x280/0x2e0 [ 48.443756][ T7649] panic+0x2cb/0x65c [ 48.447634][ T7649] ? __warn_printk+0xf3/0xf3 [ 48.452200][ T7649] ? __kthread_bind_mask+0x3b/0xc0 [ 48.457301][ T7649] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.463516][ T7649] ? __warn.cold+0x5/0x45 [ 48.467826][ T7649] ? __warn+0xe8/0x1d0 [ 48.471885][ T7649] ? __kthread_bind_mask+0x3b/0xc0 [ 48.476974][ T7649] __warn.cold+0x20/0x45 [ 48.481191][ T7649] ? __kthread_bind_mask+0x3b/0xc0 [ 48.486286][ T7649] report_bug+0x263/0x2b0 [ 48.490591][ T7649] do_error_trap+0x11b/0x200 [ 48.495176][ T7649] do_invalid_op+0x37/0x50 [ 48.499571][ T7649] ? __kthread_bind_mask+0x3b/0xc0 [ 48.504900][ T7649] invalid_op+0x14/0x20 [ 48.509040][ T7649] RIP: 0010:__kthread_bind_mask+0x3b/0xc0 [ 48.514731][ T7649] 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 [ 48.534312][ T7649] RSP: 0018:ffff888092affbb8 EFLAGS: 00010293 [ 48.540369][ T7649] RAX: ffff8880a9a580c0 RBX: ffff88808c906700 RCX: ffffffff814c06f1 [ 48.548322][ T7649] RDX: 0000000000000000 RSI: ffffffff814c06fb RDI: 0000000000000007 [ 48.556270][ T7649] RBP: ffff888092affbd8 R08: ffff8880a9a580c0 R09: 0000000000000000 [ 48.564302][ T7649] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 48.572249][ T7649] R13: ffffffff87691090 R14: ffff88808c906720 R15: ffffffff81c801d0 [ 48.580222][ T7649] ? io_ring_ctx_wait_and_kill+0x510/0x510 [ 48.586028][ T7649] ? __kthread_bind_mask+0x31/0xc0 [ 48.591124][ T7649] ? __kthread_bind_mask+0x3b/0xc0 [ 48.596220][ T7649] ? __kthread_bind_mask+0x3b/0xc0 [ 48.601304][ T7649] kthread_unpark+0x123/0x160 [ 48.605970][ T7649] kthread_stop+0xfa/0x6c0 [ 48.610373][ T7649] io_finish_async+0xab/0x180 [ 48.615024][ T7649] io_ring_ctx_wait_and_kill+0x133/0x510 [ 48.620632][ T7649] io_uring_release+0x42/0x50 [ 48.625290][ T7649] __fput+0x2e5/0x8d0 [ 48.629265][ T7649] ____fput+0x16/0x20 [ 48.633232][ T7649] task_work_run+0x14a/0x1c0 [ 48.637810][ T7649] do_exit+0x90a/0x2fa0 [ 48.641947][ T7649] ? mm_update_next_owner+0x640/0x640 [ 48.647302][ T7649] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.652752][ T7649] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.658188][ T7649] do_group_exit+0x135/0x370 [ 48.662763][ T7649] __x64_sys_exit_group+0x44/0x50 [ 48.667767][ T7649] do_syscall_64+0x103/0x610 [ 48.672338][ T7649] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.678211][ T7649] RIP: 0033:0x43ee98 [ 48.682087][ T7649] Code: Bad RIP value. [ 48.686128][ T7649] RSP: 002b:00007ffc4ac75008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 48.694509][ T7649] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee98 [ 48.702456][ T7649] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 48.710405][ T7649] RBP: 00000000004be6a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 48.718350][ T7649] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 48.726297][ T7649] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 48.735545][ T7649] Kernel Offset: disabled [ 48.739940][ T7649] Rebooting in 86400 seconds..