divide error: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.14.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events console_callback task: ffff8880a9ec2640 task.stack: ffff8880a9ec8000 RIP: 0010:fbcon_update_softback drivers/video/fbdev/core/fbcon.c:354 [inline] RIP: 0010:fbcon_switch+0x1cb/0x1700 drivers/video/fbdev/core/fbcon.c:2195 RSP: 0018:ffff8880a9ecfa88 EFLAGS: 00010246 RAX: 0000000000008000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8ad6fec0 RDI: ffff888060196cbc RBP: ffff8880a5860040 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888060196980 R13: ffff8882191f8d40 R14: 0000000000000001 R15: ffff888060196df8 FS: 0000000000000000(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f448feb006c CR3: 00000000889d4000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: redraw_screen+0x332/0x760 drivers/tty/vt/vt.c:689 complete_change_console+0xf9/0x350 drivers/tty/vt/vt_ioctl.c:1284 change_console+0x156/0x270 drivers/tty/vt/vt_ioctl.c:1409 console_callback+0x32c/0x380 drivers/tty/vt/vt.c:2473 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 0c a6 bc 07 83 c2 03 48 89 2d 42 a6 bc 07 48 89 2d bb a5 bc 07 38 ca 7c 08 84 c9 0f 85 9a 13 00 00 41 8b 9c 24 3c 03 00 00 31 d2 f3 83 f8 05 89 44 24 10 0f 8e b8 0a 00 00 e8 31 52 40 fe 8b RIP: fbcon_update_softback drivers/video/fbdev/core/fbcon.c:354 [inline] RSP: ffff8880a9ecfa88 RIP: fbcon_switch+0x1cb/0x1700 drivers/video/fbdev/core/fbcon.c:2195 RSP: ffff8880a9ecfa88 ---[ end trace 2546cf33127bf888 ]---