[ 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 '10.128.10.63' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 28.799026] divide error: 0000 [#1] PREEMPT SMP KASAN [ 28.799028] Modules linked in: [ 28.799035] CPU: 1 PID: 7971 Comm: syz-executor365 Not tainted 4.14.232-syzkaller #0 [ 28.799037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.799040] task: ffff888097132200 task.stack: ffff8880b3500000 [ 28.799049] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 28.799051] RSP: 0018:ffff8880b35077e0 EFLAGS: 00010246 [ 28.799055] RAX: 0000000000000000 RBX: ffff8882392d3a80 RCX: 1ffff1104725a787 [ 28.799057] RDX: 0000000000000000 RSI: ffff8880b2c44674 RDI: ffff8882392d3c38 [ 28.799060] RBP: ffff8880b2c442c0 R08: ffffffff8b9c43f8 R09: 0000000000000000 [ 28.799062] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882393aa880 [ 28.799064] R13: 0000000000000320 R14: ffff8880b2c445f4 R15: 0000000000000000 [ 28.799068] FS: 00000000011ae300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.799070] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.799072] CR2: 0000000000496dd3 CR3: 0000000099991000 CR4: 00000000001406e0 [ 28.799077] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.799079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.799080] Call Trace: [ 28.799089] visual_init+0x332/0x5e0 [ 28.799094] vc_allocate+0x2c5/0x640 [ 28.799100] ? lock_acquire+0x170/0x3f0 [ 28.799104] ? vc_cons_allocated+0x70/0x70 [ 28.799108] con_install+0x4d/0x450 [ 28.799111] ? vc_allocate+0x640/0x640 [ 28.799117] tty_init_dev.part.0+0x99/0x400 [ 28.799121] tty_open+0x669/0x8b0 [ 28.799125] ? tty_kopen+0x1c0/0x1c0 [ 28.799130] ? tty_kopen+0x1c0/0x1c0 [ 28.799134] chrdev_open+0x23c/0x6d0 [ 28.799138] ? __register_chrdev+0x3d0/0x3d0 [ 28.799143] do_dentry_open+0x44b/0xec0 [ 28.799146] ? __register_chrdev+0x3d0/0x3d0 [ 28.799151] ? __inode_permission+0xcd/0x2f0 [ 28.799155] vfs_open+0x105/0x220 [ 28.799160] path_openat+0x628/0x2970 [ 28.799166] ? path_lookupat+0x780/0x780 [ 28.799169] ? trace_hardirqs_on+0x10/0x10 [ 28.799173] ? lock_downgrade+0x740/0x740 [ 28.799178] do_filp_open+0x179/0x3c0 [ 28.799182] ? may_open_dev+0xe0/0xe0 [ 28.799188] ? do_raw_spin_unlock+0x164/0x220 [ 28.799193] ? __alloc_fd+0x1be/0x490 [ 28.799197] do_sys_open+0x296/0x410 [ 28.799201] ? filp_open+0x60/0x60 [ 28.799207] ? __do_page_fault+0x159/0xad0 [ 28.799212] ? do_syscall_64+0x4c/0x640 [ 28.799215] ? SyS_open+0x30/0x30 [ 28.799219] do_syscall_64+0x1d5/0x640 [ 28.799225] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.799228] RIP: 0033:0x402427 [ 28.799230] RSP: 002b:00007fff04a11ce0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 28.799235] RAX: ffffffffffffffda RBX: 000000000000701d RCX: 0000000000402427 [ 28.799237] RDX: 0000000000000002 RSI: 00007fff04a11d60 RDI: 00000000ffffff9c [ 28.799239] RBP: 00007fff04a11d60 R08: 0000000000000000 R09: 000000000000000e [ 28.799241] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 28.799243] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 28.799247] 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 [ 28.799320] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff8880b35077e0 [ 28.799327] ---[ end trace 94d192b583985cda ]--- [ 28.799329] Kernel panic - not syncing: Fatal exception [ 28.800280] Kernel Offset: disabled [ 29.125152] Rebooting in 86400 seconds..