[ 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 '10.128.0.48' (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: [ 29.732058] divide error: 0000 [#1] PREEMPT SMP KASAN [ 29.732062] Modules linked in: [ 29.732071] CPU: 0 PID: 8011 Comm: syz-executor266 Not tainted 4.14.232-syzkaller #0 [ 29.732075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.732080] task: ffff8880b32ba100 task.stack: ffff88809cc78000 [ 29.732113] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 29.732117] RSP: 0018:ffff88809cc7f7e0 EFLAGS: 00010246 [ 29.732123] RAX: 0000000000000000 RBX: ffff8880b09905c0 RCX: 1ffff110161320ef [ 29.732127] RDX: 0000000000000000 RSI: ffff888095a59174 RDI: ffff8880b0990778 [ 29.732131] RBP: ffff888095a58dc0 R08: ffffffff8b9c43f8 R09: 0000000000000000 [ 29.732134] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238889680 [ 29.732138] R13: 0000000000000000 R14: ffff888095a590f4 R15: 0000000000000000 [ 29.732143] FS: 0000000001510300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.732147] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.732150] CR2: 0000000000496dd3 CR3: 00000000a0692000 CR4: 00000000001406f0 [ 29.732157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.732160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.732162] Call Trace: [ 29.732179] visual_init+0x332/0x5e0 [ 29.732188] vc_allocate+0x2c5/0x640 [ 29.732201] ? lock_acquire+0x170/0x3f0 [ 29.732208] ? vc_cons_allocated+0x70/0x70 [ 29.732214] con_install+0x4d/0x450 [ 29.732219] ? vc_allocate+0x640/0x640 [ 29.732226] tty_init_dev.part.0+0x99/0x400 [ 29.732231] tty_open+0x669/0x8b0 [ 29.732236] ? tty_kopen+0x1c0/0x1c0 [ 29.732242] ? tty_kopen+0x1c0/0x1c0 [ 29.732250] chrdev_open+0x23c/0x6d0 [ 29.732255] ? __register_chrdev+0x3d0/0x3d0 [ 29.732261] do_dentry_open+0x44b/0xec0 [ 29.732265] ? __register_chrdev+0x3d0/0x3d0 [ 29.732274] ? __inode_permission+0xcd/0x2f0 [ 29.732279] vfs_open+0x105/0x220 [ 29.732285] path_openat+0x628/0x2970 [ 29.732292] ? path_lookupat+0x780/0x780 [ 29.732297] ? trace_hardirqs_on+0x10/0x10 [ 29.732302] ? lock_downgrade+0x740/0x740 [ 29.732308] do_filp_open+0x179/0x3c0 [ 29.732313] ? may_open_dev+0xe0/0xe0 [ 29.732321] ? do_raw_spin_unlock+0x164/0x220 [ 29.732326] ? __alloc_fd+0x1be/0x490 [ 29.732332] do_sys_open+0x296/0x410 [ 29.732337] ? filp_open+0x60/0x60 [ 29.732345] ? __do_page_fault+0x159/0xad0 [ 29.732357] ? do_syscall_64+0x4c/0x640 [ 29.732361] ? SyS_open+0x30/0x30 [ 29.732366] do_syscall_64+0x1d5/0x640 [ 29.732374] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.732378] RIP: 0033:0x402487 [ 29.732380] RSP: 002b:00007ffef0930fb0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 29.732385] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 0000000000402487 [ 29.732388] RDX: 0000000000000002 RSI: 00007ffef0931040 RDI: 00000000ffffff9c [ 29.732391] RBP: 00007ffef0931040 R08: 0000000000000000 R09: 000000000000000e [ 29.732393] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 29.732396] R13: 00007ffef09310dc R14: 00007ffef09310f0 R15: 00007ffef09310e0 [ 29.732401] 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 [ 29.732495] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff88809cc7f7e0 [ 29.732503] ---[ end trace 0ed028d7c61378d2 ]--- [ 29.732506] Kernel panic - not syncing: Fatal exception [ 29.733062] Kernel Offset: disabled [ 30.059368] Rebooting in 86400 seconds..