Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.63' (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: [ 28.754030] divide error: 0000 [#1] PREEMPT SMP KASAN [ 28.754034] Modules linked in: [ 28.754044] CPU: 1 PID: 7966 Comm: syz-executor248 Not tainted 4.14.232-syzkaller #0 [ 28.754048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.754053] task: ffff8880959581c0 task.stack: ffff8880b3a60000 [ 28.754064] RIP: 0010:fbcon_init+0xcb4/0x1cc0 [ 28.754068] RSP: 0018:ffff8880b3a677e0 EFLAGS: 00010246 [ 28.754074] RAX: 00000000000003c0 RBX: ffff888238fc0540 RCX: 1ffff110471f80df [ 28.754077] RDX: 0000000000000000 RSI: ffff8880b30398f4 RDI: ffff888238fc06f8 [ 28.754080] RBP: ffff8880b3039540 R08: ffffffff8b9ac5e8 R09: 0000000000000000 [ 28.754084] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0b21700 [ 28.754088] R13: 0000000000000000 R14: ffff8880b3039874 R15: 00000000000003c0 [ 28.754093] FS: 00000000010f9300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.754096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.754099] CR2: 0000000000496dd3 CR3: 000000009c17d000 CR4: 00000000001406e0 [ 28.754107] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.754111] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.754113] Call Trace: [ 28.754127] visual_init+0x332/0x5e0 [ 28.754134] vc_allocate+0x2c5/0x640 [ 28.754142] ? lock_acquire+0x170/0x3f0 [ 28.754153] ? vc_cons_allocated+0x70/0x70 [ 28.754161] con_install+0x4d/0x450 [ 28.754167] ? vc_allocate+0x640/0x640 [ 28.754176] tty_init_dev.part.0+0x99/0x400 [ 28.754182] tty_open+0x669/0x8b0 [ 28.754190] ? tty_kopen+0x1c0/0x1c0 [ 28.754197] ? tty_kopen+0x1c0/0x1c0 [ 28.754205] chrdev_open+0x23c/0x6d0 [ 28.754211] ? __register_chrdev+0x3d0/0x3d0 [ 28.754219] do_dentry_open+0x44b/0xec0 [ 28.754224] ? __register_chrdev+0x3d0/0x3d0 [ 28.754237] ? __inode_permission+0xcd/0x2f0 [ 28.754243] vfs_open+0x105/0x220 [ 28.754250] path_openat+0x628/0x2970 [ 28.754258] ? path_lookupat+0x780/0x780 [ 28.754264] ? trace_hardirqs_on+0x10/0x10 [ 28.754269] ? lock_downgrade+0x740/0x740 [ 28.754277] do_filp_open+0x179/0x3c0 [ 28.754283] ? may_open_dev+0xe0/0xe0 [ 28.754292] ? do_raw_spin_unlock+0x164/0x220 [ 28.754299] ? __alloc_fd+0x1be/0x490 [ 28.754306] do_sys_open+0x296/0x410 [ 28.754311] ? filp_open+0x60/0x60 [ 28.754320] ? __do_page_fault+0x159/0xad0 [ 28.754327] ? do_syscall_64+0x4c/0x640 [ 28.754331] ? SyS_open+0x30/0x30 [ 28.754337] do_syscall_64+0x1d5/0x640 [ 28.754346] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.754350] RIP: 0033:0x402487 [ 28.754353] RSP: 002b:00007ffe9dd910c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 28.754359] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 0000000000402487 [ 28.754362] RDX: 0000000000000002 RSI: 00007ffe9dd91150 RDI: 00000000ffffff9c [ 28.754365] RBP: 00007ffe9dd91150 R08: 0000000000000000 R09: 000000000000000e [ 28.754369] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 28.754372] R13: 00007ffe9dd911ec R14: 00007ffe9dd91200 R15: 00007ffe9dd911f0 [ 28.754377] 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 [ 28.754482] RIP: fbcon_init+0xcb4/0x1cc0 RSP: ffff8880b3a677e0 [ 28.754520] ---[ end trace 0417128cc806e9ca ]--- [ 28.754524] Kernel panic - not syncing: Fatal exception [ 28.755237] Kernel Offset: disabled [ 29.078622] Rebooting in 86400 seconds..