[ OK ] Reached target Login Prompts. [ OK ] Started System Logging Service. [ 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 Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.4' (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 executing program executing program syzkaller login: [ 30.072139] divide error: 0000 [#1] PREEMPT SMP KASAN [ 30.072143] Modules linked in: [ 30.072153] CPU: 0 PID: 8000 Comm: syz-executor444 Not tainted 4.14.237-syzkaller #0 [ 30.072157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.072162] task: ffff888095a002c0 task.stack: ffff8880b3ea8000 [ 30.072173] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 30.072177] RSP: 0018:ffff8880b3eaf7e0 EFLAGS: 00010246 [ 30.072183] RAX: 0000000000000000 RBX: ffff888238f735c0 RCX: 1ffff110471ee6ef [ 30.072187] RDX: 0000000000000000 RSI: ffff888093a4edb4 RDI: ffff888238f73778 [ 30.072191] RBP: ffff888093a4ea00 R08: ffffffff8b9c32e0 R09: 0000000000000000 [ 30.072195] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0ae3640 [ 30.072199] R13: 0000000000000000 R14: ffff888093a4ed34 R15: 0000000000000000 [ 30.072204] FS: 00000000012ef300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 30.072208] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.072211] CR2: 0000000000496dd3 CR3: 000000009fda8000 CR4: 00000000001406f0 [ 30.072218] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.072221] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.072223] Call Trace: [ 30.072235] visual_init+0x332/0x5e0 [ 30.072243] vc_allocate+0x2c5/0x640 [ 30.072251] ? lock_acquire+0x170/0x3f0 [ 30.072257] ? vc_cons_allocated+0x70/0x70 [ 30.072265] con_install+0x4d/0x450 [ 30.072271] ? vc_allocate+0x640/0x640 [ 30.072279] tty_init_dev.part.0+0x99/0x400 [ 30.072286] tty_open+0x669/0x8b0 [ 30.072293] ? tty_kopen+0x1c0/0x1c0 [ 30.072301] ? tty_kopen+0x1c0/0x1c0 [ 30.072307] chrdev_open+0x23c/0x6d0 [ 30.072313] ? __register_chrdev+0x3d0/0x3d0 [ 30.072322] do_dentry_open+0x44b/0xec0 [ 30.072328] ? __register_chrdev+0x3d0/0x3d0 [ 30.072335] ? __inode_permission+0xcd/0x2f0 [ 30.072342] vfs_open+0x105/0x220 [ 30.072350] path_openat+0x628/0x2970 [ 30.072358] ? path_lookupat+0x780/0x780 [ 30.072365] ? trace_hardirqs_on+0x10/0x10 [ 30.072370] ? lock_downgrade+0x740/0x740 [ 30.072379] do_filp_open+0x179/0x3c0 [ 30.072385] ? may_open_dev+0xe0/0xe0 [ 30.072394] ? do_raw_spin_unlock+0x164/0x220 [ 30.072400] ? __alloc_fd+0x1be/0x490 [ 30.072408] do_sys_open+0x296/0x410 [ 30.072413] ? filp_open+0x60/0x60 [ 30.072422] ? __do_page_fault+0x159/0xad0 [ 30.072429] ? do_syscall_64+0x4c/0x640 [ 30.072433] ? SyS_open+0x30/0x30 [ 30.072439] do_syscall_64+0x1d5/0x640 [ 30.072448] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.072452] RIP: 0033:0x402487 [ 30.072455] RSP: 002b:00007ffc249042e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 30.072461] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 0000000000402487 [ 30.072464] RDX: 0000000000000002 RSI: 00007ffc24904370 RDI: 00000000ffffff9c [ 30.072467] RBP: 00007ffc24904370 R08: 0000000000000000 R09: 000000000000000e [ 30.072471] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 30.072474] R13: 00007ffc2490440c R14: 00007ffc24904420 R15: 00007ffc24904410 [ 30.072480] 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 [ 30.072591] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff8880b3eaf7e0 [ 30.072608] ---[ end trace 0fce953255df1d12 ]--- [ 30.072612] Kernel panic - not syncing: Fatal exception [ 30.074047] Kernel Offset: disabled [ 30.416090] Rebooting in 86400 seconds..