[ 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 '10.128.1.34' (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 syzkaller login: [ 30.820947] divide error: 0000 [#1] PREEMPT SMP KASAN [ 30.820951] Modules linked in: [ 30.820961] CPU: 0 PID: 7986 Comm: syz-executor378 Not tainted 4.14.223-syzkaller #0 [ 30.820965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.820970] task: ffff8880973d8300 task.stack: ffff888096150000 [ 30.820980] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 30.820983] RSP: 0018:ffff8880961577e0 EFLAGS: 00010246 [ 30.820989] RAX: 0000000000000000 RBX: ffff888238fb6300 RCX: 1ffff110471f6c97 [ 30.820993] RDX: 0000000000000000 RSI: ffff8880959ab034 RDI: ffff888238fb64b8 [ 30.820997] RBP: ffff8880959aac80 R08: ffffffff8b9be3f8 R09: 0000000000000000 [ 30.821000] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882388668c0 [ 30.821004] R13: 0000000000000240 R14: ffff8880959aafb4 R15: 0000000000000000 [ 30.821009] FS: 0000000001c8f300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 30.821013] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.821017] CR2: 00007fff83424e68 CR3: 000000009d6d4000 CR4: 00000000001406f0 [ 30.821025] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.821029] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.821031] Call Trace: [ 30.821047] visual_init+0x332/0x5e0 [ 30.821054] vc_allocate+0x2c5/0x640 [ 30.821062] ? lock_acquire+0x170/0x3f0 [ 30.821068] ? vc_cons_allocated+0x70/0x70 [ 30.821075] con_install+0x4d/0x450 [ 30.821081] ? vc_allocate+0x640/0x640 [ 30.821088] tty_init_dev.part.0+0x99/0x400 [ 30.821094] tty_open+0x669/0x8b0 [ 30.821102] ? tty_kopen+0x1c0/0x1c0 [ 30.821108] ? tty_kopen+0x1c0/0x1c0 [ 30.821114] chrdev_open+0x23c/0x6d0 [ 30.821120] ? __register_chrdev+0x3d0/0x3d0 [ 30.821128] do_dentry_open+0x44b/0xec0 [ 30.821134] ? __register_chrdev+0x3d0/0x3d0 [ 30.821141] ? __inode_permission+0xcd/0x2f0 [ 30.821148] vfs_open+0x105/0x220 [ 30.821156] path_openat+0x628/0x2970 [ 30.821166] ? path_lookupat+0x780/0x780 [ 30.821172] ? trace_hardirqs_on+0x10/0x10 [ 30.821183] do_filp_open+0x179/0x3c0 [ 30.821189] ? may_open_dev+0xe0/0xe0 [ 30.821199] ? do_raw_spin_unlock+0x164/0x220 [ 30.821205] ? __alloc_fd+0x1be/0x490 [ 30.821214] do_sys_open+0x296/0x410 [ 30.821221] ? filp_open+0x60/0x60 [ 30.821230] ? __do_page_fault+0x159/0xad0 [ 30.821237] ? do_syscall_64+0x4c/0x640 [ 30.821242] ? SyS_open+0x30/0x30 [ 30.821249] do_syscall_64+0x1d5/0x640 [ 30.821259] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.821264] RIP: 0033:0x4024a7 [ 30.821267] RSP: 002b:00007fff83424d70 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 30.821274] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00000000004024a7 [ 30.821277] RDX: 0000000000000002 RSI: 00007fff83424e00 RDI: 00000000ffffff9c [ 30.821281] RBP: 00007fff83424e00 R08: 0000000000000000 R09: 000000000000000e [ 30.821285] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 30.821288] R13: 00007fff83424e9c R14: 00007fff83424eb0 R15: 00007fff83424ea0 [ 30.821295] 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 [ 30.821428] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff8880961577e0 [ 30.821461] ---[ end trace abb4c8429a0e523d ]--- [ 30.821465] Kernel panic - not syncing: Fatal exception [ 30.822166] Kernel Offset: disabled