INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-net-kasan-gce-2,10.128.0.42' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.205356] BUG: unable to handle kernel NULL pointer dereference at 0000000000000286
[   34.213375] IP: 0x286
[   34.215752] PGD 0 
[   34.215754] P4D 0 
[   34.217865] 
[   34.221578] Oops: 0010 [#1] SMP KASAN
[   34.225356] Dumping ftrace buffer:
[   34.228860]    (ftrace buffer empty)
[   34.232537] Modules linked in:
[   34.235698] CPU: 1 PID: 34 Comm: kworker/u4:2 Not tainted 4.13.0-rc6+ #18
[   34.242584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.251931] Workqueue: kstrp strp_work
[   34.255789] task: ffff8801d99540c0 task.stack: ffff8801d9960000
[   34.261815] RIP: 0010:0x286
[   34.264709] RSP: 0018:ffff8801d9967540 EFLAGS: 00010246
[   34.270047] RAX: dffffc0000000000 RBX: ffff8801d5ec5d60 RCX: 0000000000000000
[   34.277285] RDX: 1ffff1003abd8bbd RSI: ffffffff85b38240 RDI: ffff8801d5ec5c48
[   34.284523] RBP: ffff8801d9967558 R08: ffffffff866ad872 R09: 0000000000000000
[   34.291759] R10: ffff8801d9967438 R11: 0000000000000001 R12: ffff8801d5ec5c48
[   34.298994] R13: ffff8801d9805718 R14: ffff8801d9967980 R15: ffff8801d9805700
[   34.306234] FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   34.314431] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.320290] CR2: 0000000000000286 CR3: 0000000005a22000 CR4: 00000000001406e0
[   34.327527] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.334770] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.342023] Call Trace:
[   34.344583]  ? strp_work+0x41/0xf0
[   34.348095]  process_one_work+0xbf3/0x1bc0
[   34.352297]  ? _raw_spin_unlock_irq+0x27/0x70
[   34.356765]  ? pwq_dec_nr_in_flight+0x450/0x450
[   34.361404]  ? preempt_notifier_dec+0x20/0x20
[   34.365871]  ? __schedule+0x8f0/0x2070
[   34.369728]  ? check_noncircular+0x20/0x20
[   34.373927]  ? check_noncircular+0x20/0x20
[   34.378139]  ? debug_check_no_locks_freed+0x3c0/0x3c0
[   34.383292]  ? check_noncircular+0x20/0x20
[   34.387586]  ? lock_acquire+0x1d5/0x580
[   34.391532]  ? lock_acquire+0x1d5/0x580
[   34.395473]  ? worker_thread+0x4a3/0x1860
[   34.399584]  ? lock_downgrade+0x990/0x990
[   34.403698]  ? lock_release+0xa40/0xa40
[   34.407638]  ? do_raw_spin_trylock+0x190/0x190
[   34.412183]  ? pr_cont_work+0x130/0x130
[   34.416158]  ? set_next_entity+0x30e/0xe10
[   34.420375]  worker_thread+0x223/0x1860
[   34.424325]  ? process_one_work+0x1bc0/0x1bc0
[   34.428788]  ? _raw_spin_unlock_irq+0x27/0x70
[   34.433252]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   34.438235]  ? trace_hardirqs_on+0xd/0x10
[   34.442353]  ? _raw_spin_unlock_irq+0x27/0x70
[   34.446824]  ? finish_task_switch+0x1d3/0x740
[   34.451286]  ? finish_task_switch+0x1aa/0x740
[   34.455748]  ? preempt_notifier_dec+0x20/0x20
[   34.460217]  ? __schedule+0x8f0/0x2070
[   34.464082]  ? try_to_wake_up+0xf9/0x1600
[   34.468206]  ? migrate_swap_stop+0x970/0x970
[   34.472602]  ? find_held_lock+0x35/0x1d0
[   34.476637]  ? complete+0x62/0x80
[   34.480063]  ? __schedule+0x2070/0x2070
[   34.484009]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   34.489080]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   34.494064]  ? trace_hardirqs_on+0xd/0x10
[   34.498182]  ? __kthread_parkme+0x173/0x240
[   34.502492]  kthread+0x35e/0x430
[   34.505825]  ? process_one_work+0x1bc0/0x1bc0
[   34.510285]  ? kthread_create_on_node+0x100/0x100
[   34.515094]  ret_from_fork+0x2a/0x40
[   34.518776] Code:  Bad RIP value.
[   34.522195] RIP: 0x286 RSP: ffff8801d9967540
[   34.526563] CR2: 0000000000000286
[   34.529985] ---[ end trace 2def06b95cc33aaa ]---
[   34.534703] Kernel panic - not syncing: Fatal exception
[   34.540327] Dumping ftrace buffer:
[   34.543849]    (ftrace buffer empty)
[   34.547525] Kernel Offset: disabled
[   34.551117] Rebooting in 86400 seconds..