[   15.628064] audit: type=1800 audit(1557254028.867:24): pid=5696 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="motd" dev="sda1" ino=2480 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   47.722761] ------------[ cut here ]------------
[   47.727666] kernel BUG at mm/vmstat.c:1420!
[   47.732209] invalid opcode: 0000 [#1] PREEMPT SMP 
[   47.737473] Modules linked in:
[   47.740904] CPU: 1 PID: 2786 Comm: kworker/1:2 Not tainted 4.4.179 #3
[   47.747468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.756957] Workqueue: vmstat vmstat_update
[   47.761491] task: ffff8800b8a38180 ti: ffff8800b8b84000 task.ti: ffff8800b8b84000
[   47.769131] RIP: 0010:[<ffffffff8129f01c>]  [<ffffffff8129f01c>] vmstat_update+0x8c/0xc0
[   47.777699] RSP: 0018:ffff8800b8b87d70  EFLAGS: 00010293
[   47.783198] RAX: 0000000000000001 RBX: ffff8800bb38fd00 RCX: 0000000000000000
[   47.790471] RDX: 0000000000000000 RSI: ffffffff82f4ce5a RDI: ffffffff82f07762
[   47.797722] RBP: ffff8800b8b87d90 R08: 0000000000000000 R09: 0000000000000003
[   47.804976] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88012c116880
[   47.812273] R13: ffffe8ffffd0a400 R14: ffff88012c110de0 R15: ffffffff83435738
[   47.819737] FS:  0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000
[   47.828199] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.834058] CR2: 00005604c6702000 CR3: 00000000b2338000 CR4: 00000000001406f0
[   47.841397] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   47.848639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   47.855977] Stack:
[   47.858104]  ffff8800bb38fd00 ffff88012c116880 ffffe8ffffd0a400 ffff88012c110de0
[   47.866211]  ffff8800b8b87e00 ffffffff8119354d ffffffff811934b4 ffff88012c1168e0
[   47.874511]  0000000000000000 ffffffff84311ed0 ffffffff83db9900 0000000000000000
[   47.882982] Call Trace:
[   47.885657]  [<ffffffff8119354d>] process_one_work+0x23d/0x800
[   47.892122]  [<ffffffff811934b4>] ? process_one_work+0x1a4/0x800
[   47.898341]  [<ffffffff81193b59>] worker_thread+0x49/0x460
[   47.904082]  [<ffffffff81193b10>] ? process_one_work+0x800/0x800
[   47.910250]  [<ffffffff81198da5>] kthread+0xe5/0x100
[   47.915536]  [<ffffffff81198cc0>] ? kthread_create_on_node+0x210/0x210
[   47.922179]  [<ffffffff82669d15>] ret_from_fork+0x55/0x80
[   47.928416]  [<ffffffff81198cc0>] ? kthread_create_on_node+0x210/0x210
[   47.935946] Code: 41 5c 41 5d 41 5e 5d c3 e8 12 c0 62 00 83 f8 3f 77 1b 89 c0 f0 48 0f ab 05 ca 2e 07 03 72 0c 48 83 c4 08 41 5c 41 5d 41 5e 5d c3 <0f> 0b 80 3d 11 73 16 02 00 75 dc be 75 00 00 00 48 c7 c7 77 eb 
[   47.963608] RIP  [<ffffffff8129f01c>] vmstat_update+0x8c/0xc0
[   47.969688]  RSP <ffff8800b8b87d70>
[   47.973876] ---[ end trace fc4d0fe7c1293624 ]---
[   47.978622] Kernel panic - not syncing: Fatal exception
[   47.985620] Kernel Offset: disabled
[   47.989234] Rebooting in 86400 seconds..