[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.144' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 30.500995] divide error: 0000 [#1] PREEMPT SMP KASAN [ 30.500997] Modules linked in: [ 30.501004] CPU: 1 PID: 7990 Comm: syz-executor354 Not tainted 4.14.278-syzkaller #0 [ 30.501007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.501010] task: ffff8880b30ac600 task.stack: ffff88808d6e0000 [ 30.501018] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 30.501020] RSP: 0018:ffff88808d6e77e0 EFLAGS: 00010246 [ 30.501024] RAX: 0000000000000030 RBX: ffff888238eb7c80 RCX: 1ffff110471d6fc7 [ 30.501026] RDX: 0000000000000000 RSI: ffff88809a2cd834 RDI: ffff888238eb7e38 [ 30.501029] RBP: ffff88809a2cd480 R08: ffffffff8b9ba330 R09: 0000000000000000 [ 30.501031] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b04736c0 [ 30.501033] R13: 0000000000000008 R14: ffff88809a2cd7b4 R15: 0000000000000030 [ 30.501037] FS: 00005555556e1300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 30.501039] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.501041] CR2: 00007f4ec1b95033 CR3: 00000000ab2be000 CR4: 00000000003406e0 [ 30.501047] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.501049] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.501050] Call Trace: [ 30.501060] visual_init+0x332/0x5e0 [ 30.501065] vc_allocate+0x2c5/0x640 [ 30.501070] ? lock_acquire+0x170/0x3f0 [ 30.501074] ? vc_cons_allocated+0x70/0x70 [ 30.501078] con_install+0x4d/0x450 [ 30.501082] ? vc_allocate+0x640/0x640 [ 30.501088] tty_init_dev.part.0+0x99/0x400 [ 30.501092] tty_open+0x669/0x8b0 [ 30.501096] ? tty_kopen+0x1c0/0x1c0 [ 30.501100] ? tty_kopen+0x1c0/0x1c0 [ 30.501105] chrdev_open+0x23c/0x6d0 [ 30.501109] ? __register_chrdev+0x3d0/0x3d0 [ 30.501114] do_dentry_open+0x44b/0xec0 [ 30.501117] ? __register_chrdev+0x3d0/0x3d0 [ 30.501122] ? __inode_permission+0xcd/0x2f0 [ 30.501126] vfs_open+0x105/0x220 [ 30.501131] path_openat+0x628/0x2970 [ 30.501136] ? path_lookupat+0x780/0x780 [ 30.501140] ? trace_hardirqs_on+0x10/0x10 [ 30.501144] ? lock_downgrade+0x740/0x740 [ 30.501149] do_filp_open+0x179/0x3c0 [ 30.501153] ? may_open_dev+0xe0/0xe0 [ 30.501159] ? do_raw_spin_unlock+0x164/0x220 [ 30.501165] ? __alloc_fd+0x1be/0x490 [ 30.501170] do_sys_open+0x296/0x410 [ 30.501174] ? filp_open+0x60/0x60 [ 30.501179] ? __do_page_fault+0x159/0xad0 [ 30.501183] ? do_syscall_64+0x4c/0x640 [ 30.501186] ? SyS_open+0x30/0x30 [ 30.501190] do_syscall_64+0x1d5/0x640 [ 30.501196] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.501199] RIP: 0033:0x7f4ec1aff5b7 [ 30.501201] RSP: 002b:00007fff2bc6aaa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 30.501205] RAX: ffffffffffffffda RBX: 00000000000076c6 RCX: 00007f4ec1aff5b7 [ 30.501207] RDX: 0000000000000002 RSI: 00007fff2bc6ab20 RDI: 00000000ffffff9c [ 30.501209] RBP: 00007fff2bc6ab20 R08: 0000000000000000 R09: 000000000000000e [ 30.501211] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 30.501213] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 30.501217] Code: 54 24 30 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 8d 0d 00 00 31 d2 44 89 f8 48 8b 74 24 38 b5 b0 03 00 00 48 89 f2 48 c1 ea 03 89 44 24 30 48 b8 00 00 [ 30.501293] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff88808d6e77e0 [ 30.501299] ---[ end trace a7de4f65769e5828 ]--- [ 30.501301] Kernel panic - not syncing: Fatal exception [ 30.501530] Kernel Offset: disabled [ 30.827904] Rebooting in 86400 seconds..