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-3,10.128.0.30' (ECDSA) to the list of known hosts.
2017/08/15 11:19:00 parsed 1 programs
2017/08/15 11:19:00 executed programs: 0
2017/08/15 11:19:05 executed programs: 792
2017/08/15 11:19:10 executed programs: 1527
syzkaller login: [   36.542179] kasan: CONFIG_KASAN_INLINE enabled
[   36.542906] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   36.544130] general protection fault: 0000 [#1] SMP KASAN
[   36.544910] Dumping ftrace buffer:
[   36.545401]    (ftrace buffer empty)
[   36.545893] Modules linked in:
[   36.546342] CPU: 0 PID: 8806 Comm: syz-executor0 Not tainted 4.13.0-rc5-next-20170815+ #3
[   36.547457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.548725] task: ffff8801c1b88380 task.stack: ffff8801c19e0000
[   36.549546] RIP: 0010:skb_release_data+0x26c/0x790
[   36.550228] RSP: 0018:ffff8801c19e6da8 EFLAGS: 00010207
[   36.550963] RAX: 0e824260409bede2 RBX: dffffc0000000000 RCX: 0000000000000000
[   36.551923] RDX: 0000000000000000 RSI: ffffffff85b34bc0 RDI: 7412130204df6f15
[   36.553033] RBP: ffff8801c19e6ec8 R08: ffff8801c1d5eb08 R09: 0000000000000000
[   36.553986] R10: ffff8801c19e76b0 R11: 0000000000000007 R12: ffff8801ce7281b0
[   36.554951] R13: ffffed003833cdcc R14: 1ffff1003833cdc4 R15: 7412130204df6ef5
[   36.555904] FS:  00007f16c4506700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   36.557025] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.557818] CR2: 00007f16c44e4db8 CR3: 00000001c1a32000 CR4: 00000000001406f0
[   36.558769] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.559729] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.560677] Call Trace:
[   36.561039]  ? print_usage_bug+0x480/0x480
[   36.561606]  ? skb_tx_error+0x2c0/0x2c0
[   36.562139]  ? __lock_is_held+0xb6/0x140
[   36.565206]  skb_release_all+0x4a/0x60
[   36.569058]  kfree_skb+0x15d/0x4c0
[   36.572566]  ? ip_rcv+0x40a/0x17d0
[   36.576076]  ? __kfree_skb+0x20/0x20
[   36.579758]  ? __is_insn_slot_addr+0x1fc/0x330
[   36.584308]  ? __lock_acquire+0x6aa/0x3bc0
[   36.588511]  ip_rcv+0x40a/0x17d0
[   36.591855]  ? ip_local_deliver+0x6d0/0x6d0
[   36.596148]  ? debug_check_no_locks_freed+0x3c0/0x3c0
[   36.601304]  ? __lock_acquire+0x6aa/0x3bc0
[   36.605505]  ? __free_insn_slot+0x5c0/0x5c0
[   36.609796]  ? __lock_is_held+0xb6/0x140
[   36.613827]  ? ip_local_deliver+0x6d0/0x6d0
[   36.618116]  __netif_receive_skb_core+0x19af/0x33d0
[   36.623099]  ? unwind_get_return_address+0x61/0xa0
[   36.628011]  ? nf_ingress+0x9f0/0x9f0
[   36.631788]  ? save_stack+0xa3/0xd0
[   36.635381]  ? save_stack_trace+0x16/0x20
[   36.639495]  ? save_stack+0x43/0xd0
[   36.643087]  ? kasan_kmalloc+0xad/0xe0
[   36.646937]  ? kasan_slab_alloc+0x12/0x20
[   36.651050]  ? kmem_cache_alloc+0x12e/0x760
[   36.655344]  ? __build_skb+0x9d/0x450
[   36.659107]  ? build_skb+0x6f/0x260
[   36.662704]  ? tun_get_user+0x1db7/0x2150
[   36.666826]  ? tun_chr_write_iter+0xd8/0x190
[   36.671202]  ? __vfs_write+0x684/0x970
[   36.675060]  ? vfs_write+0x189/0x510
[   36.678750]  ? __skb_flow_get_ports+0x151/0x400
[   36.683385]  ? flow_get_u32_dst+0x130/0x130
[   36.687677]  ? __skb_flow_get_ports+0x151/0x400
[   36.692322]  ? check_noncircular+0x20/0x20
[   36.696529]  ? __skb_flow_dissect+0xfa1/0x3ae0
[   36.701083]  ? __sched_text_start+0x8/0x8
[   36.705201]  ? __skb_flow_get_ports+0x400/0x400
[   36.709837]  ? find_held_lock+0x35/0x1d0
[   36.713867]  ? netif_receive_skb_internal+0x1d7/0x5e0
[   36.719027]  ? lock_downgrade+0x990/0x990
[   36.723149]  ? pvclock_read_flags+0x160/0x160
[   36.727623]  ? lock_acquire+0x1d5/0x580
[   36.731568]  ? lock_acquire+0x1d5/0x580
[   36.735515]  ? netif_receive_skb_internal+0x93/0x5e0
[   36.740590]  ? ktime_get_with_offset+0x2c1/0x420
[   36.745314]  ? lock_release+0xa40/0xa40
[   36.749252]  ? do_gettimeofday+0x190/0x190
[   36.753464]  __netif_receive_skb+0x2c/0x1b0
[   36.757753]  ? __netif_receive_skb+0x2c/0x1b0
[   36.762217]  netif_receive_skb_internal+0x10b/0x5e0
[   36.767199]  ? dev_cpu_dead+0xb00/0xb00
[   36.771148]  ? tun_device_event+0xca0/0xca0
[   36.775439]  ? rcu_pm_notify+0xc0/0xc0
[   36.779300]  netif_receive_skb+0xae/0x390
[   36.783416]  ? netif_receive_skb_internal+0x5e0/0x5e0
[   36.788583]  ? futex_wait_setup+0x3d0/0x3d0
[   36.792907]  ? tun_rx_batched.isra.43+0x5bd/0x860
[   36.797734]  tun_rx_batched.isra.43+0x5e7/0x860
[   36.802382]  ? skb_get_hash_perturb+0x9d0/0x9d0
[   36.807032]  ? tun_sock_write_space+0x370/0x370
[   36.811673]  ? tun_free_netdev+0x1b0/0x1b0
[   36.815887]  ? check_noncircular+0x20/0x20
[   36.820096]  tun_get_user+0x11dd/0x2150
[   36.824050]  ? tun_flow_update+0xf70/0xf70
[   36.828255]  ? __tun_get+0x1ab/0x2e0
[   36.831938]  ? lock_downgrade+0x990/0x990
[   36.836056]  ? lock_release+0xa40/0xa40
[   36.840007]  ? __lock_is_held+0xb6/0x140
[   36.844054]  ? __tun_get+0x1d4/0x2e0
[   36.847738]  ? tun_chr_close+0x60/0x60
[   36.851596]  tun_chr_write_iter+0xd8/0x190
[   36.855808]  __vfs_write+0x684/0x970
[   36.859498]  ? default_llseek+0x290/0x290
[   36.863622]  ? _cond_resched+0x14/0x30
[   36.867482]  ? avc_policy_seqno+0x9/0x20
[   36.871515]  ? selinux_file_permission+0x82/0x460
[   36.876341]  ? rw_verify_area+0xe5/0x2b0
[   36.880367]  ? __fdget_raw+0x20/0x20
[   36.884050]  vfs_write+0x189/0x510
[   36.887557]  SyS_write+0xef/0x220
[   36.890979]  ? SyS_read+0x220/0x220
[   36.894571]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   36.899555]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   36.904283]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   36.909007] RIP: 0033:0x40b751
[   36.912175] RSP: 002b:00007f16c4505c10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[   36.919847] RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 000000000040b751
[   36.927084] RDX: 000000000000003a RSI: 0000000020002000 RDI: 0000000000000003
[   36.934321] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
[   36.941558] R10: 00000000000f4246 R11: 0000000000000293 R12: 00000000004bab41
[   36.948795] R13: 00000000ffffffff R14: 000000002001aff8 R15: 0000000000000001
[   36.956046] Code: c6 e8 c9 78 8d fd 4c 89 e0 48 c1 e8 03 80 3c 18 00 0f 85 93 04 00 00 4d 8b 3c 24 41 c6 45 00 00 49 8d 7f 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 6b 04 00 00 41 80 7d 00 00 49 8b 47 20 0f 85 
[   36.975127] RIP: skb_release_data+0x26c/0x790 RSP: ffff8801c19e6da8
[   36.981532] ---[ end trace b6609efe2f75a2e9 ]---
[   36.986274] Kernel panic - not syncing: Fatal exception in interrupt
[   36.993083] Dumping ftrace buffer:
[   36.996594]    (ftrace buffer empty)
[   37.000265] Kernel Offset: disabled
[   37.003860] Rebooting in 86400 seconds..