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-next-kasan-gce-4,10.128.15.220' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
syzkaller login: [   31.056723] BUG: unable to handle kernel paging request at ffffc900016f4000
[   31.063839] IP: snd_seq_oss_readq_puts+0x146/0x210
[   31.068742] PGD 1dac75067 P4D 1dac75067 PUD 1dac76067 PMD 1c1cd3067 PTE 0
[   31.075655] Oops: 0000 [#1] SMP KASAN
[   31.079419] Dumping ftrace buffer:
[   31.082920]    (ftrace buffer empty)
[   31.086592] Modules linked in:
[   31.089752] CPU: 0 PID: 3012 Comm: syzkaller659314 Not tainted 4.14.0-rc1-next-20170918+ #24
[   31.098286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.107605] task: ffff8801ce930000 task.stack: ffff8801ce650000
[   31.113631] RIP: 0010:snd_seq_oss_readq_puts+0x146/0x210
[   31.119045] RSP: 0018:ffff8801ce657208 EFLAGS: 00010246
[   31.124374] RAX: ffffed0039ccae4a RBX: ffffc900016f4000 RCX: ffff8801ce657251
[   31.131614] RDX: 0000000000000000 RSI: 1ffff10039d26117 RDI: 0000000000000282
[   31.138854] RBP: ffff8801ce6572b8 R08: ffff8801d807ab50 R09: 0000000000000000
[   31.146087] R10: 0000000000000000 R11: 0000000000000000 R12: 000000003fffffa4
[   31.153328] R13: ffff8801ce657290 R14: ffffc900016f4001 R15: dffffc0000000000
[   31.160569] FS:  00007f9079b19700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   31.168758] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.174605] CR2: ffffc900016f4000 CR3: 00000001ce47d000 CR4: 00000000001406f0
[   31.181842] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.189077] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.196313] Call Trace:
[   31.198874]  ? snd_seq_oss_readq_put_event+0x240/0x240
[   31.204116]  ? trace_hardirqs_on+0xd/0x10
[   31.208231]  ? find_slot+0x11d/0x150
[   31.211912]  snd_seq_oss_midi_input+0xd39/0x1040
[   31.216635]  ? do_raw_spin_trylock+0x190/0x190
[   31.221189]  ? snd_seq_oss_midi_get_addr+0x170/0x170
[   31.226260]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   31.231332]  ? snd_seq_oss_process_event+0x2570/0x2570
[   31.236572]  snd_seq_oss_event_input+0x15d/0x220
[   31.241294]  snd_seq_deliver_single_event.constprop.11+0x2fb/0x940
[   31.247584]  ? snd_seq_ioctl_running_mode+0x150/0x150
[   31.252735]  ? queueptr+0x79/0xa0
[   31.256159]  ? snd_seq_timer_get_cur_tick+0xd/0x40
[   31.261055]  ? update_timestamp_of_queue+0x14d/0x200
[   31.266123]  snd_seq_deliver_event+0x318/0x790
[   31.270672]  ? snd_seq_deliver_single_event.constprop.11+0x940/0x940
[   31.277132]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.282114]  ? snd_seq_client_use_ptr+0x85/0x330
[   31.286834]  snd_seq_kernel_client_dispatch+0x11e/0x150
[   31.292161]  dummy_input+0x2c4/0x400
[   31.295841]  ? dummy_free+0x20/0x20
[   31.299434]  ? snd_seq_port_use_ptr+0x12d/0x1c0
[   31.304068]  ? dummy_free+0x20/0x20
[   31.307659]  snd_seq_deliver_single_event.constprop.11+0x2fb/0x940
[   31.313942]  ? snd_seq_ioctl_running_mode+0x150/0x150
[   31.319094]  ? snd_seq_client_use_ptr+0x3c/0x330
[   31.323829]  snd_seq_deliver_event+0x12c/0x790
[   31.328376]  ? do_raw_spin_trylock+0x190/0x190
[   31.332927]  ? snd_seq_deliver_single_event.constprop.11+0x940/0x940
[   31.339383]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   31.344450]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.349430]  ? trace_hardirqs_on+0xd/0x10
[   31.353542]  ? snd_seq_client_use_ptr+0x85/0x330
[   31.358264]  snd_seq_dispatch_event+0x105/0x5b0
[   31.362898]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   31.367964]  ? snd_seq_kernel_client_dispatch+0x150/0x150
[   31.373463]  ? trace_hardirqs_on+0xd/0x10
[   31.377585]  snd_seq_check_queue.part.3+0x38e/0x510
[   31.382572]  snd_seq_enqueue_event+0x32d/0x3d0
[   31.387118]  ? queueptr+0x79/0xa0
[   31.390536]  snd_seq_client_enqueue_event+0x21b/0x420
[   31.395691]  ? snd_seq_deliver_event+0x790/0x790
[   31.400408]  ? trace_hardirqs_on+0xd/0x10
[   31.404520]  ? snd_seq_client_use_ptr+0x85/0x330
[   31.409242]  kernel_client_enqueue.part.10+0xb5/0xd0
[   31.414311]  snd_seq_kernel_client_enqueue_blocking+0xcf/0x110
[   31.420248]  snd_seq_oss_write+0x5fe/0xa80
[   31.424446]  ? __fget+0x362/0x580
[   31.427865]  ? snd_seq_oss_read+0x3e0/0x3e0
[   31.432158]  odev_write+0x64/0x90
[   31.435575]  ? odev_poll+0x80/0x80
[   31.439078]  __vfs_write+0xef/0x970
[   31.442670]  ? kernel_read+0x120/0x120
[   31.446521]  ? __might_sleep+0x95/0x190
[   31.450465]  ? __inode_security_revalidate+0xd9/0x130
[   31.455622]  ? avc_policy_seqno+0x9/0x20
[   31.459644]  ? selinux_file_permission+0x82/0x460
[   31.464453]  ? security_file_permission+0x89/0x1f0
[   31.469348]  ? rw_verify_area+0xe5/0x2b0
[   31.473371]  ? __fdget_raw+0x20/0x20
[   31.477050]  vfs_write+0x18f/0x510
[   31.480554]  SyS_write+0xef/0x220
[   31.483969]  ? lockdep_sys_exit+0x47/0xf0
[   31.488084]  ? SyS_read+0x220/0x220
[   31.491673]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   31.496655]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   31.501389]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   31.506120] RIP: 0033:0x446469
[   31.509274] RSP: 002b:00007f9079b18dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.516946] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446469
[   31.524184] RDX: 0000000000000150 RSI: 0000000020e7f000 RDI: 0000000000000003
[   31.531419] RBP: 0000000000000082 R08: 00007f9079b19700 R09: 00007f9079b19700
[   31.538653] R10: 00007f9079b19700 R11: 0000000000000246 R12: 0000000000000000
[   31.545889] R13: 00007ffe543fcc1f R14: 00007f9079b199c0 R15: 0000000000000000
[   31.553131] Code: d9 4c 8d 73 01 48 c1 e8 03 83 e1 07 42 0f b6 04 38 38 c8 7f 08 84 c0 0f 85 bf 00 00 00 48 8b 85 58 ff ff ff 48 8b 8d 68 ff ff ff <41> 0f b6 5e ff 0f b6 00 83 e1 07 38 c8 7f 08 84 c0 0f 85 89 00 
[   31.572198] RIP: snd_seq_oss_readq_puts+0x146/0x210 RSP: ffff8801ce657208
[   31.579091] CR2: ffffc900016f4000
[   31.582515] ---[ end trace cc8c763aca15dec8 ]---
[   31.587232] Kernel panic - not syncing: Fatal exception
[   31.592585] Dumping ftrace buffer:
[   31.596093]    (ftrace buffer empty)
[   31.599769] Kernel Offset: disabled
[   31.603362] Rebooting in 86400 seconds..