[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.93' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 529.893914] audit: type=1400 audit(1602099390.682:8): avc: denied { execmem } for pid=6352 comm="syz-executor740" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program executing program executing program [ 530.323985] divide error: 0000 [#1] PREEMPT SMP KASAN [ 530.323988] Modules linked in: [ 530.323997] CPU: 0 PID: 6374 Comm: syz-executor740 Not tainted 4.14.198-syzkaller #0 [ 530.324001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 530.324005] task: ffff88809008a680 task.stack: ffff888097720000 [ 530.324115] RIP: 0010:fbcon_init+0xccc/0x1dd0 [ 530.324119] RSP: 0018:ffff8880977277d8 EFLAGS: 00010246 [ 530.324126] RAX: 0000000000000000 RBX: ffff8882191c70c0 RCX: 1ffff11043238e4f [ 530.324131] RDX: 0000000000000000 RSI: ffff888097662f34 RDI: ffff8882191c7278 [ 530.324134] RBP: ffff888097662b80 R08: ffff8882191c70c0 R09: 0000000000000000 [ 530.324137] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882191f2000 [ 530.324140] R13: ffff888097662eb4 R14: 0000000000000000 R15: 0000000000000017 [ 530.324145] FS: 0000000001906880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 530.324148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 530.324151] CR2: 000000000049f830 CR3: 00000000a802b000 CR4: 00000000001406f0 [ 530.324157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 530.324160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 530.324162] Call Trace: [ 530.324234] visual_init+0x332/0x5e0 [ 530.324242] vc_allocate+0x2c5/0x640 [ 530.324299] ? lock_acquire+0x170/0x3f0 [ 530.324305] ? vc_cons_allocated+0x70/0x70 [ 530.324313] con_install+0x4d/0x450 [ 530.324319] ? vc_allocate+0x640/0x640 [ 530.324378] tty_init_dev.part.0+0x99/0x400 [ 530.324387] tty_open+0x669/0x8b0 [ 530.324396] ? tty_kopen+0x1c0/0x1c0 [ 530.324405] ? tty_kopen+0x1c0/0x1c0 [ 530.324466] chrdev_open+0x23c/0x6d0 [ 530.324475] ? __register_chrdev+0x3d0/0x3d0 [ 530.324510] do_dentry_open+0x44b/0xec0 [ 530.324516] ? __register_chrdev+0x3d0/0x3d0 [ 530.324523] ? __inode_permission+0xcd/0x2f0 [ 530.324528] vfs_open+0x105/0x220 [ 530.324535] path_openat+0x628/0x2970 [ 530.324550] ? path_lookupat+0x780/0x780 [ 530.324557] ? trace_hardirqs_on+0x10/0x10 [ 530.324567] do_filp_open+0x179/0x3c0 [ 530.324574] ? may_open_dev+0xe0/0xe0 [ 530.324585] ? do_raw_spin_unlock+0x164/0x220 [ 530.324602] ? __alloc_fd+0x1be/0x490 [ 530.324610] do_sys_open+0x296/0x410 [ 530.324615] ? filp_open+0x60/0x60 [ 530.324645] ? __do_page_fault+0x19a/0xb50 [ 530.324652] ? do_syscall_64+0x4c/0x640 [ 530.324655] ? do_sys_open+0x410/0x410 [ 530.324661] do_syscall_64+0x1d5/0x640 [ 530.324693] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 530.324698] RIP: 0033:0x401260 [ 530.324700] RSP: 002b:00007ffe7e8d14a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 530.324706] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000401260 [ 530.324709] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007ffe7e8d14d0 [ 530.324711] RBP: 0000000000081641 R08: 0000000000000000 R09: 000000000000000e [ 530.324714] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402280 [ 530.324717] R13: 0000000000402310 R14: 0000000000000000 R15: 0000000000000000 [ 530.324722] Code: 24 38 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 ad 0d 00 00 8b 44 24 20 31 d2 48 8b 74 24 40 b5 b0 03 00 00 48 89 f2 48 c1 ea 03 89 44 24 20 48 b8 00 00 [ 530.324817] RIP: fbcon_init+0xccc/0x1dd0 RSP: ffff8880977277d8 [ 530.324826] ---[ end trace 949837dd60167af5 ]--- [ 530.324830] Kernel panic - not syncing: Fatal exception [ 530.326191] Kernel Offset: disabled [ 530.647689] Rebooting in 86400 seconds..