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-7,10.128.0.18' (ECDSA) to the list of known hosts. 2017/08/16 11:21:13 parsed 1 programs 2017/08/16 11:21:13 executed programs: 0 syzkaller login: [ 43.354026] hrtimer: interrupt took 32208 ns 2017/08/16 11:21:18 executed programs: 83 [ 50.530339] BUG: unable to handle kernel paging request at ffffff0100008000 [ 50.537508] IP: skb_release_data+0x3c2/0x790 [ 50.541896] PGD 644c067 [ 50.541901] P4D 644c067 [ 50.544542] PUD 0 [ 50.547183] [ 50.550902] Oops: 0000 [#1] SMP KASAN [ 50.554671] Dumping ftrace buffer: [ 50.558176] (ftrace buffer empty) [ 50.561854] Modules linked in: [ 50.565024] CPU: 0 PID: 3888 Comm: syz-executor0 Not tainted 4.13.0-rc5-next-20170816+ #4 [ 50.573308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.582634] task: ffff8801c7c6a340 task.stack: ffff8801c9b20000 [ 50.588668] RIP: 0010:skb_release_data+0x3c2/0x790 [ 50.593569] RSP: 0018:ffff8801c9b26da8 EFLAGS: 00010246 [ 50.598916] RAX: 1fffffe020001000 RBX: 0000000000000020 RCX: 0000000000000000 [ 50.606172] RDX: 0000000000000000 RSI: ffffffff85b34bc0 RDI: ffff8801cebb0188 [ 50.613424] RBP: ffff8801c9b26ec8 R08: ffff8801cc389b08 R09: 0000000000000000 [ 50.620681] R10: ffff8801c9b276b0 R11: 0000000000000007 R12: dffffc0000000000 [ 50.627929] R13: ffffff0100008000 R14: ffff8801cc389a40 R15: 0000000000000000 [ 50.635179] FS: 00007f0920ccb700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 50.643382] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.649253] CR2: ffffff0100008000 CR3: 00000001c85b5000 CR4: 00000000001406f0 [ 50.656498] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.663741] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.670981] Call Trace: [ 50.673546] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.678283] ? skb_tx_error+0x2c0/0x2c0 [ 50.682234] ? __lock_is_held+0xb6/0x140 [ 50.686282] skb_release_all+0x4a/0x60 [ 50.690140] kfree_skb+0x15d/0x4c0 [ 50.693656] ? ip_rcv+0x40a/0x17d0 [ 50.697175] ? __kfree_skb+0x20/0x20 [ 50.700875] ? find_get_context.isra.84+0x670/0x670 [ 50.705863] ? __is_insn_slot_addr+0x1fc/0x330 [ 50.710425] ? __lock_acquire+0x6aa/0x3bc0 [ 50.714641] ip_rcv+0x40a/0x17d0 [ 50.717993] ? ip_local_deliver+0x6d0/0x6d0 [ 50.722288] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 50.727454] ? __lock_acquire+0x6aa/0x3bc0 [ 50.731659] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.736392] ? __lock_is_held+0xb6/0x140 [ 50.740434] ? ip_local_deliver+0x6d0/0x6d0 [ 50.744732] __netif_receive_skb_core+0x19af/0x33d0 [ 50.749732] ? memcmp+0x91/0x160 [ 50.753084] ? nf_ingress+0x9f0/0x9f0 [ 50.756857] ? perf_trace_run_bpf_submit+0x1a7/0x290 [ 50.761933] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.766929] ? perf_tp_event+0xae0/0xae0 [ 50.770969] ? memset+0x31/0x40 [ 50.774233] ? perf_trace_run_bpf_submit+0x1a7/0x290 [ 50.779320] ? perf_trace_run_bpf_submit+0x1a7/0x290 [ 50.784413] ? perf_trace_run_bpf_submit+0x1ae/0x290 [ 50.789515] ? perf_tp_event+0xae0/0xae0 [ 50.793568] ? memset+0x31/0x40 [ 50.796841] ? perf_trace_lock_acquire+0x445/0x900 [ 50.801764] ? perf_trace_lock+0x860/0x860 [ 50.805976] ? retint_kernel+0x10/0x10 [ 50.809848] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 50.814862] ? pvclock_read_flags+0x160/0x160 [ 50.819367] ? lock_acquire+0x1d5/0x580 [ 50.823320] ? lock_acquire+0x1d5/0x580 [ 50.827282] ? netif_receive_skb_internal+0x93/0x5e0 [ 50.832366] ? ktime_get_with_offset+0x2c1/0x420 [ 50.837108] ? lock_release+0xa40/0xa40 [ 50.841056] ? do_gettimeofday+0x190/0x190 [ 50.845284] __netif_receive_skb+0x2c/0x1b0 [ 50.849577] ? __netif_receive_skb+0x2c/0x1b0 [ 50.854048] netif_receive_skb_internal+0x10b/0x5e0 [ 50.859039] ? dev_cpu_dead+0xb00/0xb00 [ 50.862988] ? tun_device_event+0xca0/0xca0 [ 50.867294] ? rcu_pm_notify+0xc0/0xc0 [ 50.871180] netif_receive_skb+0xae/0x390 [ 50.875303] ? netif_receive_skb_internal+0x5e0/0x5e0 [ 50.880467] ? perf_trace_run_bpf_submit+0x1a7/0x290 [ 50.885541] ? memset+0x31/0x40 [ 50.888795] ? perf_trace_run_bpf_submit+0x1a7/0x290 [ 50.893869] ? retint_kernel+0x10/0x10 [ 50.897730] ? tun_rx_batched.isra.43+0x5bd/0x860 [ 50.902552] tun_rx_batched.isra.43+0x5e7/0x860 [ 50.907205] ? tun_sock_write_space+0x370/0x370 [ 50.911847] ? retint_kernel+0x10/0x10 [ 50.915734] tun_get_user+0x11dd/0x2150 [ 50.919707] ? tun_flow_update+0xf70/0xf70 [ 50.923928] ? __tun_get+0x1ab/0x2e0 [ 50.927616] ? lock_downgrade+0x990/0x990 [ 50.931742] ? retint_kernel+0x10/0x10 [ 50.935619] ? irq_move_irq+0xb0/0x1b0 [ 50.939484] ? __tun_get+0x1d4/0x2e0 [ 50.943170] ? tun_chr_close+0x60/0x60 [ 50.947060] tun_chr_write_iter+0xd8/0x190 [ 50.951275] __vfs_write+0x684/0x970 [ 50.954968] ? default_llseek+0x290/0x290 [ 50.959103] ? _cond_resched+0x14/0x30 [ 50.962972] ? avc_policy_seqno+0x9/0x20 [ 50.967016] ? selinux_file_permission+0x82/0x460 [ 50.971860] ? rw_verify_area+0xe5/0x2b0 [ 50.975895] ? __fdget_raw+0x20/0x20 [ 50.979592] vfs_write+0x189/0x510 [ 50.983116] SyS_write+0xef/0x220 [ 50.986539] ? SyS_socket+0x137/0x200 [ 50.990314] ? SyS_read+0x220/0x220 [ 50.993910] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.998899] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 51.003638] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 51.008369] RIP: 0033:0x40b751 [ 51.011531] RSP: 002b:00007f0920ccac10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 51.019208] RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 000000000040b751 [ 51.026445] RDX: 0000000000000036 RSI: 0000000020002000 RDI: 0000000000000003 [ 51.033682] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 51.040919] R10: 00000000000f4246 R11: 0000000000000293 R12: 0000000000000036 [ 51.048155] R13: 00000000ffffffff R14: 0000000000000036 R15: 0000000020002000 [ 51.055418] Code: ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 68 08 4d 85 ed 74 2b e8 60 67 8d fd 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 97 03 00 00 <49> 8b 5d 00 4c 89 ef e8 42 cf ff ff 48 85 db 49 89 dd 75 d5 e8 [ 51.074595] RIP: skb_release_data+0x3c2/0x790 RSP: ffff8801c9b26da8 [ 51.080965] CR2: ffffff0100008000 [ 51.084390] ---[ end trace 61ff4676e624fe1e ]--- [ 51.089124] Kernel panic - not syncing: Fatal exception in interrupt [ 51.095896] Dumping ftrace buffer: [ 51.099412] (ftrace buffer empty) [ 51.103089] Kernel Offset: disabled [ 51.106686] Rebooting in 86400 seconds..