[ 14.809225] audit: type=1800 audit(1556632514.227:24): pid=5548 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: [ 41.669218] ------------[ cut here ]------------ [ 41.674071] kernel BUG at mm/vmstat.c:1420! [ 41.678375] invalid opcode: 0000 [#1] PREEMPT SMP [ 41.683645] Modules linked in: [ 41.686966] CPU: 1 PID: 16 Comm: kworker/1:0 Not tainted 4.4.179 #3 [ 41.693355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.702694] Workqueue: vmstat vmstat_update [ 41.707105] task: ffff88012b7a4440 ti: ffff88012b7a8000 task.ti: ffff88012b7a8000 [ 41.714697] RIP: 0010:[] [] vmstat_update+0x8c/0xc0 [ 41.723109] RSP: 0018:ffff88012b7abd70 EFLAGS: 00010293 [ 41.728549] RAX: 0000000000000001 RBX: ffff88012b70b880 RCX: 0000000000000000 [ 41.735872] RDX: 0000000000000000 RSI: ffffffff82f4ce5a RDI: ffffffff82f07762 [ 41.743124] RBP: ffff88012b7abd90 R08: 0000000000000000 R09: 0000000000000003 [ 41.750371] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88012c116880 [ 41.757729] R13: ffffe8ffffd0a400 R14: ffff88012c110de0 R15: ffffffff83435738 [ 41.764985] FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 [ 41.773189] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.779056] CR2: 00007fff1e880f70 CR3: 00000000b8637000 CR4: 00000000001406f0 [ 41.786301] Stack: [ 41.788426] ffff88012b70b880 ffff88012c116880 ffffe8ffffd0a400 ffff88012c110de0 [ 41.796474] ffff88012b7abe00 ffffffff8119354d ffffffff811934b4 ffff88012c1168e0 [ 41.804547] 0000000000000000 ffffffff84311ed0 ffffffff83da6e50 0000000000000000 [ 41.812545] Call Trace: [ 41.815207] [] process_one_work+0x23d/0x800 [ 41.821152] [] ? process_one_work+0x1a4/0x800 [ 41.827322] [] worker_thread+0x49/0x460 [ 41.833014] [] ? process_one_work+0x800/0x800 [ 41.839234] [] kthread+0xe5/0x100 [ 41.844323] [] ? kthread_create_on_node+0x210/0x210 [ 41.850969] [] ret_from_fork+0x55/0x80 [ 41.856488] [] ? kthread_create_on_node+0x210/0x210 [ 41.863172] 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 [ 41.890053] RIP [] vmstat_update+0x8c/0xc0 [ 41.896043] RSP [ 41.899776] ---[ end trace 060c1622833ecc9c ]--- [ 41.904524] Kernel panic - not syncing: Fatal exception [ 41.910855] Kernel Offset: disabled [ 41.914466] Rebooting in 86400 seconds..