syzkaller login: [ 47.680947] ------------[ cut here ]------------ [ 47.685819] kernel BUG at mm/vmstat.c:1420! [ 47.690681] invalid opcode: 0000 [#1] PREEMPT SMP [ 47.696393] Modules linked in: [ 47.699720] CPU: 1 PID: 457 Comm: kworker/1:1 Not tainted 4.4.184 #12 [ 47.706636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.716170] Workqueue: vmstat vmstat_update [ 47.721571] task: ffff8800bbb287c0 ti: ffff8800bbb2c000 task.ti: ffff8800bbb2c000 [ 47.729281] RIP: 0010:[] [] vmstat_update+0x8c/0xc0 [ 47.737643] RSP: 0018:ffff8800bbb2fd70 EFLAGS: 00010293 [ 47.743074] RAX: 0000000000000001 RBX: ffff8800bba17040 RCX: 0000000000000000 [ 47.750364] RDX: 0000000000000000 RSI: ffffffff82f4c8c8 RDI: ffffffff82f07192 [ 47.757791] RBP: ffff8800bbb2fd90 R08: 0000000000000000 R09: 0000000000000003 [ 47.765461] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88012c1168c0 [ 47.773167] R13: ffffe8ffffd0a400 R14: ffff88012c110e20 R15: ffffffff834369f8 [ 47.780569] FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 [ 47.789008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.795242] CR2: 0000558ebec28000 CR3: 00000000b6311000 CR4: 00000000001406f0 [ 47.802621] Stack: [ 47.804743] ffff8800bba17040 ffff88012c1168c0 ffffe8ffffd0a400 ffff88012c110e20 [ 47.812877] ffff8800bbb2fe00 ffffffff81191677 ffffffff811915e4 ffff88012c116a08 [ 47.821846] 0000000000000000 ffffffff84310f90 ffffffff83da5a00 0000000000000000 [ 47.829926] Call Trace: [ 47.832488] [] process_one_work+0x237/0x7f0 [ 47.839274] [] ? process_one_work+0x1a4/0x7f0 [ 47.845485] [] worker_thread+0x49/0x460 [ 47.851235] [] ? process_one_work+0x7f0/0x7f0 [ 47.857354] [] kthread+0xe3/0x100 [ 47.862427] [] ? kthread_create_on_node+0x210/0x210 [ 47.869112] [] ret_from_fork+0x3f/0x70 [ 47.874627] [] ? kthread_create_on_node+0x210/0x210 [ 47.881533] Code: 41 5c 41 5d 41 5e 5d c3 e8 32 82 62 00 83 f8 3f 77 1b 89 c0 f0 48 0f ab 05 ba 4a 07 03 72 0c 48 83 c4 08 41 5c 41 5d 41 5e 5d c3 <0f> 0b 80 3d bd ae 16 02 00 75 dc be 75 00 00 00 48 c7 c7 67 e4 [ 47.910018] RIP [] vmstat_update+0x8c/0xc0 [ 47.915997] RSP [ 47.919674] ---[ end trace b0abbf75bdd90185 ]--- [ 47.924429] Kernel panic - not syncing: Fatal exception [ 47.931400] Kernel Offset: disabled [ 47.935106] Rebooting in 86400 seconds..