[ 38.627339][ T26] audit: type=1800 audit(1555106885.168:26): pid=7704 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.649555][ T26] audit: type=1800 audit(1555106885.168:27): pid=7704 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 38.677586][ T26] audit: type=1800 audit(1555106885.238:28): pid=7704 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 39.600778][ T26] audit: type=1800 audit(1555106886.168:29): pid=7704 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.200' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.311841][ T7857] WARNING: CPU: 0 PID: 7857 at kernel/kthread.c:399 __kthread_bind_mask+0x3b/0xc0 [ 60.321074][ T7857] Kernel panic - not syncing: panic_on_warn set ... [ 60.327707][ T7857] CPU: 0 PID: 7857 Comm: syz-executor746 Not tainted 5.1.0-rc4-next-20190412 #24 [ 60.336827][ T7857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.346877][ T7857] Call Trace: [ 60.350180][ T7857] dump_stack+0x172/0x1f0 [ 60.354518][ T7857] ? __kthread_bind_mask+0x20/0xc0 [ 60.359613][ T7857] panic+0x2cb/0x72b [ 60.363494][ T7857] ? __warn_printk+0xf3/0xf3 [ 60.368070][ T7857] ? __kthread_bind_mask+0x3b/0xc0 [ 60.373172][ T7857] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.379422][ T7857] ? __warn.cold+0x5/0x46 [ 60.383763][ T7857] ? __warn+0xe8/0x1d0 [ 60.387822][ T7857] ? __kthread_bind_mask+0x3b/0xc0 [ 60.392918][ T7857] __warn.cold+0x20/0x46 [ 60.397146][ T7857] ? __kthread_bind_mask+0x3b/0xc0 [ 60.402264][ T7857] report_bug+0x263/0x2b0 [ 60.406582][ T7857] do_error_trap+0x11b/0x200 [ 60.411186][ T7857] do_invalid_op+0x37/0x50 [ 60.415605][ T7857] ? __kthread_bind_mask+0x3b/0xc0 [ 60.420721][ T7857] invalid_op+0x14/0x20 [ 60.424867][ T7857] RIP: 0010:__kthread_bind_mask+0x3b/0xc0 [ 60.430570][ T7857] Code: 48 89 fb e8 f7 ab 24 00 4c 89 e6 48 89 df e8 ac e1 02 00 31 ff 49 89 c4 48 89 c6 e8 7f ad 24 00 4d 85 e4 75 15 e8 d5 ab 24 00 <0f> 0b e8 ce ab 24 00 5b 41 5c 41 5d 41 5e 5d c3 e8 c0 ab 24 00 4c [ 60.450256][ T7857] RSP: 0018:ffff88808cce7bb8 EFLAGS: 00010293 [ 60.456310][ T7857] RAX: ffff88808c08e000 RBX: ffff888088616700 RCX: ffffffff814bdd11 [ 60.464278][ T7857] RDX: 0000000000000000 RSI: ffffffff814bdd1b RDI: 0000000000000007 [ 60.472241][ T7857] RBP: ffff88808cce7bd8 R08: ffff88808c08e000 R09: 0000000000000000 [ 60.480198][ T7857] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 60.488192][ T7857] R13: ffffffff87691148 R14: ffff888088616720 R15: ffffffff81c91e10 [ 60.496168][ T7857] ? io_ring_ctx_wait_and_kill+0x510/0x510 [ 60.501977][ T7857] ? __kthread_bind_mask+0x31/0xc0 [ 60.507096][ T7857] ? __kthread_bind_mask+0x3b/0xc0 [ 60.512196][ T7857] ? __kthread_bind_mask+0x3b/0xc0 [ 60.517289][ T7857] kthread_unpark+0x123/0x160 [ 60.521959][ T7857] kthread_stop+0xfa/0x6c0 [ 60.526361][ T7857] io_finish_async+0xab/0x180 [ 60.531035][ T7857] io_ring_ctx_wait_and_kill+0x133/0x510 [ 60.536688][ T7857] io_uring_release+0x42/0x50 [ 60.541354][ T7857] __fput+0x2e5/0x8d0 [ 60.545327][ T7857] ____fput+0x16/0x20 [ 60.549310][ T7857] task_work_run+0x14a/0x1c0 [ 60.553888][ T7857] do_exit+0x90a/0x2fa0 [ 60.558029][ T7857] ? mm_update_next_owner+0x640/0x640 [ 60.563415][ T7857] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 60.568865][ T7857] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 60.574331][ T7857] do_group_exit+0x135/0x370 [ 60.578949][ T7857] __x64_sys_exit_group+0x44/0x50 [ 60.583971][ T7857] do_syscall_64+0x103/0x610 [ 60.588557][ T7857] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 60.594439][ T7857] RIP: 0033:0x43ee98 [ 60.598351][ T7857] Code: Bad RIP value. [ 60.602429][ T7857] RSP: 002b:00007ffece774268 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 60.610836][ T7857] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee98 [ 60.618797][ T7857] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 60.626759][ T7857] RBP: 00000000004be6a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 60.634727][ T7857] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 [ 60.649826][ T7857] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 60.658703][ T7857] Kernel Offset: disabled [ 60.663103][ T7857] Rebooting in 86400 seconds..