[ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ 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 '10.128.10.6' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 29.053128] divide error: 0000 [#1] PREEMPT SMP KASAN [ 29.053131] Modules linked in: [ 29.053141] CPU: 1 PID: 8005 Comm: syz-executor407 Not tainted 4.14.212-syzkaller #0 [ 29.053145] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.053149] task: ffff8880b29b6640 task.stack: ffff888095828000 [ 29.053159] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 29.053162] RSP: 0018:ffff88809582f7e0 EFLAGS: 00010246 [ 29.053175] RAX: 0000000000000320 RBX: ffff8880b0aa5ac0 RCX: 1ffff11016154b8f [ 29.053179] RDX: 0000000000000000 RSI: ffff8880b2a165b4 RDI: ffff8880b0aa5c78 [ 29.053183] RBP: ffff8880b2a16200 R08: ffffffff8b9bd3f8 R09: 0000000000000000 [ 29.053187] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0b04580 [ 29.053191] R13: 0000000000000000 R14: ffff8880b2a16534 R15: 0000000000000320 [ 29.053196] FS: 00000000006d6880(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.053199] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.053203] CR2: 00000000006cc090 CR3: 00000000ab152000 CR4: 00000000001406e0 [ 29.053210] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.053213] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.053215] Call Trace: [ 29.053230] visual_init+0x332/0x5e0 [ 29.053238] vc_allocate+0x2c5/0x640 [ 29.053245] ? lock_acquire+0x170/0x3f0 [ 29.053251] ? vc_cons_allocated+0x70/0x70 [ 29.053259] con_install+0x4d/0x450 [ 29.053265] ? vc_allocate+0x640/0x640 [ 29.053273] tty_init_dev.part.0+0x99/0x400 [ 29.053279] tty_open+0x669/0x8b0 [ 29.053287] ? tty_kopen+0x1c0/0x1c0 [ 29.053294] ? tty_kopen+0x1c0/0x1c0 [ 29.053301] chrdev_open+0x23c/0x6d0 [ 29.053307] ? __register_chrdev+0x3d0/0x3d0 [ 29.053315] do_dentry_open+0x44b/0xec0 [ 29.053320] ? __register_chrdev+0x3d0/0x3d0 [ 29.053329] ? __inode_permission+0xcd/0x2f0 [ 29.053335] vfs_open+0x105/0x220 [ 29.053342] path_openat+0x628/0x2970 [ 29.053350] ? path_lookupat+0x780/0x780 [ 29.053355] ? trace_hardirqs_on+0x10/0x10 [ 29.053363] do_filp_open+0x179/0x3c0 [ 29.053372] ? may_open_dev+0xe0/0xe0 [ 29.053383] ? do_raw_spin_unlock+0x164/0x220 [ 29.053391] ? __alloc_fd+0x1be/0x490 [ 29.053398] do_sys_open+0x296/0x410 [ 29.053404] ? filp_open+0x60/0x60 [ 29.053413] ? __do_page_fault+0x159/0xad0 [ 29.053423] ? do_syscall_64+0x4c/0x640 [ 29.053430] ? do_sys_open+0x410/0x410 [ 29.053438] do_syscall_64+0x1d5/0x640 [ 29.053452] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.053458] RIP: 0033:0x401260 [ 29.053460] RSP: 002b:00007ffeb1ad4a98 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 29.053474] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000401260 [ 29.053478] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffeb1ad4ac0 [ 29.053482] RBP: 0000000000007043 R08: 0000000000000000 R09: 000000000000000e [ 29.053486] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402280 [ 29.053490] R13: 0000000000402310 R14: 0000000000000000 R15: 0000000000000000 [ 29.053497] 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 [ 29.053607] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff88809582f7e0 [ 29.054108] ---[ end trace 4b3175cbac6e8205 ]--- [ 29.054113] Kernel panic - not syncing: Fatal exception [ 29.054646] Kernel Offset: disabled