[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 29.712243] divide error: 0000 [#1] PREEMPT SMP KASAN [ 29.712245] Modules linked in: [ 29.712252] CPU: 0 PID: 8004 Comm: syz-executor605 Not tainted 4.14.212-syzkaller #0 [ 29.712254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.712257] task: ffff888095aee3c0 task.stack: ffff888095660000 [ 29.712265] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 29.712267] RSP: 0018:ffff8880956677e0 EFLAGS: 00010246 [ 29.712271] RAX: 0000000000000320 RBX: ffff888238faa340 RCX: 1ffff110471f549f [ 29.712274] RDX: 0000000000000000 RSI: ffff888095a3f7f4 RDI: ffff888238faa4f8 [ 29.712276] RBP: ffff888095a3f440 R08: ffffffff8b9bd3f8 R09: 0000000000000000 [ 29.712278] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0afb640 [ 29.712281] R13: 0000000000000000 R14: ffff888095a3f774 R15: 0000000000000320 [ 29.712284] FS: 000000000262c880(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.712286] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.712289] CR2: 00000000004b4c53 CR3: 00000000a1b42000 CR4: 00000000001406f0 [ 29.712296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.712298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.712300] Call Trace: [ 29.712311] visual_init+0x332/0x5e0 [ 29.712316] vc_allocate+0x2c5/0x640 [ 29.712322] ? lock_acquire+0x170/0x3f0 [ 29.712326] ? vc_cons_allocated+0x70/0x70 [ 29.712331] con_install+0x4d/0x450 [ 29.712334] ? vc_allocate+0x640/0x640 [ 29.712340] tty_init_dev.part.0+0x99/0x400 [ 29.712344] tty_open+0x669/0x8b0 [ 29.712349] ? tty_kopen+0x1c0/0x1c0 [ 29.712354] ? tty_kopen+0x1c0/0x1c0 [ 29.712359] chrdev_open+0x23c/0x6d0 [ 29.712362] ? __register_chrdev+0x3d0/0x3d0 [ 29.712368] do_dentry_open+0x44b/0xec0 [ 29.712371] ? __register_chrdev+0x3d0/0x3d0 [ 29.712376] ? __inode_permission+0xcd/0x2f0 [ 29.712380] vfs_open+0x105/0x220 [ 29.712384] path_openat+0x628/0x2970 [ 29.712390] ? path_lookupat+0x780/0x780 [ 29.712393] ? trace_hardirqs_on+0x10/0x10 [ 29.712398] do_filp_open+0x179/0x3c0 [ 29.712402] ? may_open_dev+0xe0/0xe0 [ 29.712410] ? do_raw_spin_unlock+0x164/0x220 [ 29.712415] ? __alloc_fd+0x1be/0x490 [ 29.712420] do_sys_open+0x296/0x410 [ 29.712424] ? filp_open+0x60/0x60 [ 29.712430] ? __do_page_fault+0x159/0xad0 [ 29.712435] ? do_syscall_64+0x4c/0x640 [ 29.712438] ? do_sys_open+0x410/0x410 [ 29.712442] do_syscall_64+0x1d5/0x640 [ 29.712449] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.712453] RIP: 0033:0x4011f0 [ 29.712455] RSP: 002b:00007ffff8088ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 29.712459] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004011f0 [ 29.712461] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffff8088ad0 [ 29.712463] RBP: 00000000000073b6 R08: 0000000000000000 R09: 000000000000000e [ 29.712466] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402210 [ 29.712468] R13: 00000000004022a0 R14: 0000000000000000 R15: 0000000000000000 [ 29.712472] 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 [ 29.712548] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff8880956677e0 [ 29.712554] ---[ end trace 0f0cf99c7e06923d ]--- [ 29.712557] Kernel panic - not syncing: Fatal exception [ 29.713106] Kernel Offset: disabled [ 30.033242] Rebooting in 86400 seconds..