INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-4,10.128.0.10' (ECDSA) to the list of known hosts. 2017/10/29 20:50:04 parsed 1 programs 2017/10/29 20:50:04 executed programs: 0 syzkaller login: [ 57.162583] BUG: unable to handle kernel paging request at fffffbfffffffffe [ 57.163731] IP: devpts_mntget+0x135/0x280 [ 57.164281] PGD 21fff4067 P4D 21fff4067 PUD 21fff3067 PMD 21fff2067 PTE 0 [ 57.165209] Oops: 0000 [#1] SMP KASAN [ 57.165718] Dumping ftrace buffer: [ 57.166191] (ftrace buffer empty) [ 57.166702] Modules linked in: [ 57.167137] CPU: 0 PID: 3141 Comm: syz-executor0 Not tainted 4.14.0-rc5-mm1+ #20 [ 57.168120] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.169339] task: ffff8801d1218080 task.stack: ffff8801d1960000 [ 57.170152] RIP: 0010:devpts_mntget+0x135/0x280 [ 57.170768] RSP: 0018:ffff8801d1967a50 EFLAGS: 00010a03 [ 57.171487] RAX: dffffc0000000000 RBX: ffffffffffffffed RCX: ffffffff81ce63d0 [ 57.172437] RDX: 1ffffffffffffffe RSI: 0000000000000001 RDI: fffffffffffffff5 [ 57.173387] RBP: ffff8801d1967ae0 R08: 0000000000000001 R09: 1ffff1003a32cf05 [ 57.174337] R10: ffff8801d1967760 R11: 0000000000000000 R12: 1ffff1003a32cf4a [ 57.175305] R13: ffff8801d1967a70 R14: ffff8801d371f180 R15: ffff8801d1967b20 [ 57.176282] FS: 00007efece727700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 57.177355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.178139] CR2: fffffbfffffffffe CR3: 00000001d194e000 CR4: 00000000001406f0 [ 57.179093] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.180043] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.180992] Call Trace: [ 57.181348] ? devpts_fill_super+0xad0/0xad0 [ 57.182617] ? __alloc_fd+0x750/0x750 [ 57.185955] ptm_open_peer+0x11a/0x2f0 [ 57.189809] ? pty_unix98_install+0xa30/0xa30 [ 57.194276] tty_ioctl+0x50f/0x15f0 [ 57.197869] ? tty_vhangup+0x30/0x30 [ 57.201552] ? task_work_run+0x16c/0x270 [ 57.205576] ? lock_downgrade+0x990/0x990 [ 57.209691] ? do_raw_spin_trylock+0x190/0x190 [ 57.214247] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 57.220098] ? _raw_spin_unlock_irq+0x27/0x70 [ 57.224563] ? rcu_note_context_switch+0x710/0x710 [ 57.229460] ? tty_vhangup+0x30/0x30 [ 57.233136] do_vfs_ioctl+0x1b1/0x1520 [ 57.236985] ? _cond_resched+0x14/0x30 [ 57.240841] ? ioctl_preallocate+0x2b0/0x2b0 [ 57.245213] ? selinux_capable+0x40/0x40 [ 57.249246] ? security_file_ioctl+0x89/0xb0 [ 57.253618] SyS_ioctl+0x8f/0xc0 [ 57.256949] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 57.261666] RIP: 0033:0x452869 [ 57.264823] RSP: 002b:00007efece726be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 [ 57.272495] RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452869 [ 57.279729] RDX: 00000000202c2000 RSI: 2000000000005441 RDI: 0000000000000000 [ 57.286964] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 57.294199] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f7790 [ 57.301432] R13: 00000000ffffffff R14: 00007efece7276d4 R15: 0000000000000000 [ 57.308672] Code: c1 ea 03 80 3c 02 00 0f 85 56 01 00 00 48 8b 5d 90 e8 70 5b a0 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 24 01 00 00 4c 8b 7b 08 48 b8 00 00 00 00 00 [ 57.327735] RIP: devpts_mntget+0x135/0x280 RSP: ffff8801d1967a50 [ 57.333838] CR2: fffffbfffffffffe [ 57.337260] ---[ end trace 8868e882bc7f3570 ]--- [ 57.341976] Kernel panic - not syncing: Fatal exception [ 57.347328] Dumping ftrace buffer: [ 57.350833] (ftrace buffer empty) [ 57.354508] Kernel Offset: disabled [ 57.358101] Rebooting in 86400 seconds..