[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: [ 39.636176] ------------[ cut here ]------------ [ 39.640967] kernel BUG at mm/vmstat.c:1420! [ 39.645260] invalid opcode: 0000 [#1] PREEMPT SMP [ 39.650520] Modules linked in: [ 39.653806] CPU: 1 PID: 2772 Comm: kworker/1:2 Not tainted 4.4.180 #8 [ 39.660357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.669733] Workqueue: vmstat vmstat_update [ 39.674199] task: ffff8800b84b2300 ti: ffff8800b84bc000 task.ti: ffff8800b84bc000 [ 39.681795] RIP: 0010:[] [] vmstat_update+0x8c/0xc0 [ 39.690166] RSP: 0018:ffff8800b84bfd70 EFLAGS: 00010293 [ 39.695626] RAX: 0000000000000001 RBX: ffff8800bacacc40 RCX: 0000000000000000 [ 39.702877] RDX: 0000000000000000 RSI: ffffffff82f4c7c1 RDI: ffffffff82f070e2 [ 39.710267] RBP: ffff8800b84bfd90 R08: 0000000000000000 R09: 0000000000000003 [ 39.717552] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88012c1168c0 [ 39.724802] R13: ffffe8ffffd0a400 R14: ffff88012c110e20 R15: ffffffff83436878 [ 39.732049] FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 [ 39.740348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.746209] CR2: 000055f71b20a000 CR3: 00000000b3d39000 CR4: 00000000001406f0 [ 39.753456] Stack: [ 39.755579] ffff8800bacacc40 ffff88012c1168c0 ffffe8ffffd0a400 ffff88012c110e20 [ 39.763597] ffff8800b84bfe00 ffffffff811914e7 ffffffff81191454 ffff88012c116a08 [ 39.771757] 0000000000000000 ffffffff84310f90 ffffffff83da60c0 0000000000000000 [ 39.779845] Call Trace: [ 39.782409] [] process_one_work+0x237/0x7f0 [ 39.788356] [] ? process_one_work+0x1a4/0x7f0 [ 39.794480] [] worker_thread+0x49/0x460 [ 39.800078] [] ? process_one_work+0x7f0/0x7f0 [ 39.806204] [] kthread+0xe3/0x100 [ 39.811284] [] ? kthread_create_on_node+0x210/0x210 [ 39.817936] [] ret_from_fork+0x3f/0x70 [ 39.823443] [] ? kthread_create_on_node+0x210/0x210 [ 39.830075] Code: 41 5c 41 5d 41 5e 5d c3 e8 72 7b 62 00 83 f8 3f 77 1b 89 c0 f0 48 0f ab 05 fa 4c 07 03 72 0c 48 83 c4 08 41 5c 41 5d 41 5e 5d c3 <0f> 0b 80 3d 7e af 16 02 00 75 dc be 75 00 00 00 48 c7 c7 17 e4 [ 39.857029] RIP [] vmstat_update+0x8c/0xc0 [ 39.863037] RSP [ 39.866683] ---[ end trace 90844efef539c635 ]--- [ 39.871423] Kernel panic - not syncing: Fatal exception [ 39.877915] Kernel Offset: disabled [ 39.881652] Rebooting in 86400 seconds..