[ 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 '10.128.0.203' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 33.568815] divide error: 0000 [#1] PREEMPT SMP KASAN [ 33.568818] Modules linked in: [ 33.568824] CPU: 1 PID: 8008 Comm: syz-executor767 Not tainted 4.14.231-syzkaller #0 [ 33.568827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.568830] task: ffff8880b330e4c0 task.stack: ffff88808d6a0000 [ 33.568838] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 33.568840] RSP: 0018:ffff88808d6a77e0 EFLAGS: 00010246 [ 33.568844] RAX: 0000000000000000 RBX: ffff8880b098f340 RCX: 1ffff11016131e9f [ 33.568846] RDX: 0000000000000000 RSI: ffff8880b3149af4 RDI: ffff8880b098f4f8 [ 33.568849] RBP: ffff8880b3149740 R08: ffffffff8b9c22e0 R09: 0000000000000000 [ 33.568851] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823881a5c0 [ 33.568853] R13: 0000000000000000 R14: ffff8880b3149a74 R15: 0000000000000000 [ 33.568857] FS: 0000000000c50300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 33.568859] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.568861] CR2: 0000000000496dd3 CR3: 00000000a5e8a000 CR4: 00000000001406e0 [ 33.568867] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.568869] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.568870] Call Trace: [ 33.568880] visual_init+0x332/0x5e0 [ 33.568885] vc_allocate+0x2c5/0x640 [ 33.568890] ? lock_acquire+0x170/0x3f0 [ 33.568894] ? vc_cons_allocated+0x70/0x70 [ 33.568898] con_install+0x4d/0x450 [ 33.568902] ? vc_allocate+0x640/0x640 [ 33.568908] tty_init_dev.part.0+0x99/0x400 [ 33.568911] tty_open+0x669/0x8b0 [ 33.568916] ? tty_kopen+0x1c0/0x1c0 [ 33.568920] ? tty_kopen+0x1c0/0x1c0 [ 33.568924] chrdev_open+0x23c/0x6d0 [ 33.568928] ? __register_chrdev+0x3d0/0x3d0 [ 33.568932] do_dentry_open+0x44b/0xec0 [ 33.568936] ? __register_chrdev+0x3d0/0x3d0 [ 33.568941] ? __inode_permission+0xcd/0x2f0 [ 33.568945] vfs_open+0x105/0x220 [ 33.568949] path_openat+0x628/0x2970 [ 33.568955] ? path_lookupat+0x780/0x780 [ 33.568959] ? trace_hardirqs_on+0x10/0x10 [ 33.568962] ? lock_downgrade+0x740/0x740 [ 33.568967] do_filp_open+0x179/0x3c0 [ 33.568971] ? may_open_dev+0xe0/0xe0 [ 33.568977] ? do_raw_spin_unlock+0x164/0x220 [ 33.568982] ? __alloc_fd+0x1be/0x490 [ 33.568986] do_sys_open+0x296/0x410 [ 33.568990] ? filp_open+0x60/0x60 [ 33.568997] ? __do_page_fault+0x159/0xad0 [ 33.569002] ? do_syscall_64+0x4c/0x640 [ 33.569005] ? SyS_open+0x30/0x30 [ 33.569008] do_syscall_64+0x1d5/0x640 [ 33.569015] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.569018] RIP: 0033:0x402427 [ 33.569020] RSP: 002b:00007ffc593748f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 33.569024] RAX: ffffffffffffffda RBX: 00000000000082c2 RCX: 0000000000402427 [ 33.569026] RDX: 0000000000000002 RSI: 00007ffc59374970 RDI: 00000000ffffff9c [ 33.569028] RBP: 00007ffc59374970 R08: 0000000000000000 R09: 000000000000000e [ 33.569030] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 33.569032] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 33.569036] 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 [ 33.569110] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff88808d6a77e0 [ 33.569121] ---[ end trace a8eaa3e3a659ff1e ]--- [ 33.569124] Kernel panic - not syncing: Fatal exception [ 33.569769] Kernel Offset: disabled [ 33.894357] Rebooting in 86400 seconds..