[ 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 '10.128.0.103' (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: [ 30.354086] divide error: 0000 [#1] PREEMPT SMP KASAN [ 30.354089] Modules linked in: [ 30.354100] CPU: 1 PID: 8000 Comm: syz-executor308 Not tainted 4.14.215-syzkaller #0 [ 30.354104] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.354109] task: ffff8880b1b10580 task.stack: ffff8880b33a8000 [ 30.354120] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 30.354123] RSP: 0018:ffff8880b33af7e0 EFLAGS: 00010246 [ 30.354129] RAX: 0000000000000000 RBX: ffff888238fa00c0 RCX: 1ffff110471f404f [ 30.354134] RDX: 0000000000000000 RSI: ffff8880b1a767b4 RDI: ffff888238fa0278 [ 30.354138] RBP: ffff8880b1a76400 R08: ffffffff8b9be3f8 R09: 0000000000000000 [ 30.354142] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0fc03c0 [ 30.354145] R13: 0000000000000000 R14: ffff8880b1a76734 R15: 0000000000000000 [ 30.354151] FS: 0000000002085880(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 30.354155] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.354159] CR2: 00000000006cc090 CR3: 000000009a8ee000 CR4: 00000000001406e0 [ 30.354168] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.354172] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.354174] Call Trace: [ 30.354190] visual_init+0x332/0x5e0 [ 30.354199] vc_allocate+0x2c5/0x640 [ 30.354206] ? lock_acquire+0x170/0x3f0 [ 30.354213] ? vc_cons_allocated+0x70/0x70 [ 30.354222] con_install+0x4d/0x450 [ 30.354229] ? vc_allocate+0x640/0x640 [ 30.354238] tty_init_dev.part.0+0x99/0x400 [ 30.354246] tty_open+0x669/0x8b0 [ 30.354254] ? tty_kopen+0x1c0/0x1c0 [ 30.354263] ? tty_kopen+0x1c0/0x1c0 [ 30.354270] chrdev_open+0x23c/0x6d0 [ 30.354282] ? __register_chrdev+0x3d0/0x3d0 [ 30.354293] do_dentry_open+0x44b/0xec0 [ 30.354299] ? __register_chrdev+0x3d0/0x3d0 [ 30.354308] ? __inode_permission+0xcd/0x2f0 [ 30.354315] vfs_open+0x105/0x220 [ 30.354322] path_openat+0x628/0x2970 [ 30.354332] ? path_lookupat+0x780/0x780 [ 30.354338] ? trace_hardirqs_on+0x10/0x10 [ 30.354348] do_filp_open+0x179/0x3c0 [ 30.354362] ? may_open_dev+0xe0/0xe0 [ 30.354375] ? do_raw_spin_unlock+0x164/0x220 [ 30.354383] ? __alloc_fd+0x1be/0x490 [ 30.354392] do_sys_open+0x296/0x410 [ 30.354399] ? filp_open+0x60/0x60 [ 30.354409] ? __do_page_fault+0x159/0xad0 [ 30.354416] ? do_syscall_64+0x4c/0x640 [ 30.354422] ? do_sys_open+0x410/0x410 [ 30.354429] do_syscall_64+0x1d5/0x640 [ 30.354441] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.354446] RIP: 0033:0x401260 [ 30.354450] RSP: 002b:00007ffda4325c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 30.354457] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000401260 [ 30.354460] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffda4325c30 [ 30.354464] RBP: 000000000000757f R08: 0000000000000000 R09: 000000000000000e [ 30.354468] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402280 [ 30.354472] R13: 0000000000402310 R14: 0000000000000000 R15: 0000000000000000 [ 30.354480] 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 [ 30.354619] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff8880b33af7e0 [ 30.354737] ---[ end trace bec5aa67cc652302 ]--- [ 30.354742] Kernel panic - not syncing: Fatal exception [ 30.355121] Kernel Offset: disabled