[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 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: [ 45.687353] ------------[ cut here ]------------ [ 45.692274] kernel BUG at mm/vmstat.c:1420! [ 45.696674] invalid opcode: 0000 [#1] PREEMPT SMP [ 45.702032] Modules linked in: [ 45.705325] CPU: 1 PID: 713 Comm: kworker/1:1 Not tainted 4.4.182 #10 [ 45.711990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.721582] Workqueue: vmstat vmstat_update [ 45.726009] task: ffff8800baff81c0 ti: ffff8800baf64000 task.ti: ffff8800baf64000 [ 45.733983] RIP: 0010:[] [] vmstat_update+0x8c/0xc0 [ 45.742328] RSP: 0018:ffff8800baf67d70 EFLAGS: 00010293 [ 45.747751] RAX: 0000000000000001 RBX: ffff8800bae84c40 RCX: 0000000000000000 [ 45.754997] RDX: 0000000000000000 RSI: ffffffff82f4c7db RDI: ffffffff82f070ba [ 45.762252] RBP: ffff8800baf67d90 R08: 0000000000000000 R09: 0000000000000003 [ 45.769589] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88012c1168c0 [ 45.776832] R13: ffffe8ffffd0a400 R14: ffff88012c110e20 R15: ffffffff834369f8 [ 45.784134] FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 [ 45.792436] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.798301] CR2: 0000561bd51d2000 CR3: 00000000b862d000 CR4: 00000000001406f0 [ 45.805673] Stack: [ 45.807797] ffff8800bae84c40 ffff88012c1168c0 ffffe8ffffd0a400 ffff88012c110e20 [ 45.815902] ffff8800baf67e00 ffffffff81191647 ffffffff811915b4 ffff88012c116a08 [ 45.824034] 0000000000000000 ffffffff84310f90 ffffffff83da5f10 0000000000000000 [ 45.832102] Call Trace: [ 45.834666] [] process_one_work+0x237/0x7f0 [ 45.840613] [] ? process_one_work+0x1a4/0x7f0 [ 45.846733] [] worker_thread+0x49/0x460 [ 45.852328] [] ? process_one_work+0x7f0/0x7f0 [ 45.858450] [] kthread+0xe3/0x100 [ 45.863532] [] ? kthread_create_on_node+0x210/0x210 [ 45.870407] [] ret_from_fork+0x3f/0x70 [ 45.876034] [] ? kthread_create_on_node+0x210/0x210 [ 45.882855] Code: 41 5c 41 5d 41 5e 5d c3 e8 d2 7f 62 00 83 f8 3f 77 1b 89 c0 f0 48 0f ab 05 ea 4a 07 03 72 0c 48 83 c4 08 41 5c 41 5d 41 5e 5d c3 <0f> 0b 80 3d ed ae 16 02 00 75 dc be 75 00 00 00 48 c7 c7 cf e3 [ 45.910086] RIP [] vmstat_update+0x8c/0xc0 [ 45.916111] RSP [ 45.919816] ---[ end trace 0771a482fb3cce49 ]--- [ 45.924567] Kernel panic - not syncing: Fatal exception [ 45.931382] Kernel Offset: disabled [ 45.946554] Rebooting in 86400 seconds..