[ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ 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 Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.14' (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 syzkaller login: [ 29.209074] divide error: 0000 [#1] PREEMPT SMP KASAN [ 29.209078] Modules linked in: [ 29.209089] CPU: 1 PID: 8000 Comm: syz-executor917 Not tainted 4.14.228-syzkaller #0 [ 29.209093] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.209098] task: ffff8880a9fd4400 task.stack: ffff88809d748000 [ 29.209111] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 29.209115] RSP: 0018:ffff88809d74f7e0 EFLAGS: 00010246 [ 29.209121] RAX: 0000000000000000 RBX: ffff8880b0f907c0 RCX: 1ffff110161f212f [ 29.209131] RDX: 0000000000000000 RSI: ffff88809e75aef4 RDI: ffff8880b0f90978 [ 29.209136] RBP: ffff88809e75ab40 R08: ffffffff8b9c23f8 R09: 0000000000000000 [ 29.209139] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f7b700 [ 29.209143] R13: 0000000000000240 R14: ffff88809e75ae74 R15: 0000000000000000 [ 29.209148] FS: 0000000001934300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.209152] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.209156] CR2: 0000556a96bc32e8 CR3: 000000009b635000 CR4: 00000000001406e0 [ 29.209163] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.209168] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.209171] Call Trace: [ 29.209186] visual_init+0x332/0x5e0 [ 29.209195] vc_allocate+0x2c5/0x640 [ 29.209203] ? lock_acquire+0x170/0x3f0 [ 29.209209] ? vc_cons_allocated+0x70/0x70 [ 29.209217] con_install+0x4d/0x450 [ 29.209223] ? vc_allocate+0x640/0x640 [ 29.209232] tty_init_dev.part.0+0x99/0x400 [ 29.209239] tty_open+0x669/0x8b0 [ 29.209247] ? tty_kopen+0x1c0/0x1c0 [ 29.209255] ? tty_kopen+0x1c0/0x1c0 [ 29.209262] chrdev_open+0x23c/0x6d0 [ 29.209269] ? __register_chrdev+0x3d0/0x3d0 [ 29.209278] do_dentry_open+0x44b/0xec0 [ 29.209284] ? __register_chrdev+0x3d0/0x3d0 [ 29.209292] ? __inode_permission+0xcd/0x2f0 [ 29.209299] vfs_open+0x105/0x220 [ 29.209307] path_openat+0x628/0x2970 [ 29.209317] ? path_lookupat+0x780/0x780 [ 29.209322] ? trace_hardirqs_on+0x10/0x10 [ 29.209332] do_filp_open+0x179/0x3c0 [ 29.209338] ? may_open_dev+0xe0/0xe0 [ 29.209349] ? do_raw_spin_unlock+0x164/0x220 [ 29.209355] ? __alloc_fd+0x1be/0x490 [ 29.209364] do_sys_open+0x296/0x410 [ 29.209370] ? filp_open+0x60/0x60 [ 29.209379] ? __do_page_fault+0x159/0xad0 [ 29.209386] ? do_syscall_64+0x4c/0x640 [ 29.209391] ? SyS_open+0x30/0x30 [ 29.209398] do_syscall_64+0x1d5/0x640 [ 29.209407] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.209412] RIP: 0033:0x4024a7 [ 29.209415] RSP: 002b:00007fffe35415b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 29.209422] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00000000004024a7 [ 29.209426] RDX: 0000000000000002 RSI: 00007fffe3541640 RDI: 00000000ffffff9c [ 29.209429] RBP: 00007fffe3541640 R08: 0000000000000000 R09: 000000000000000e [ 29.209433] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 29.209436] R13: 00007fffe35416dc R14: 00007fffe35416f0 R15: 00007fffe35416e0 [ 29.209443] 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 [ 29.209559] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff88809d74f7e0 [ 29.209605] ---[ end trace 5c1c130efc31bda1 ]--- [ 29.209609] Kernel panic - not syncing: Fatal exception [ 29.210240] Kernel Offset: disabled [ 29.532197] Rebooting in 86400 seconds..