2017/08/15 15:18:03 parsed 1 programs 2017/08/15 15:18:03 executed programs: 0 syzkaller login: [ 18.454661] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.467995] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.478937] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.489074] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.499687] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.509033] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.520351] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.530329] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.540991] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.551783] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.563156] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.573297] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.583976] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.594597] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.604252] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.614793] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.625281] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.641578] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.666727] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.694375] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.707073] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.738931] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.757600] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.771079] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.812093] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.837032] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.849455] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.865309] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.877687] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.892456] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.905736] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.921451] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.936409] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.949932] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 18.982837] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.002269] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.016893] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.043057] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.071360] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.101488] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.156928] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.181917] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.216417] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.250712] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.285835] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.322408] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.343353] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.393225] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.422758] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.467921] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.498328] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.516872] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.546120] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.583435] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.627666] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.658527] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.671466] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.684503] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.707816] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.727306] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.738284] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.749849] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.762649] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.774913] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.788924] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.806692] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.831627] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.849673] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.860927] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.878652] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.897063] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.913467] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.937130] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.965105] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 19.977329] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.004299] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.033761] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.070550] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.090477] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.100711] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.117093] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.129077] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.140641] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.154716] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.168056] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.180670] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.193373] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.203663] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.215017] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.227180] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.238688] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.252559] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.273829] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.293911] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.313479] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.350630] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.380935] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.392335] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.405309] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.418539] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.430980] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.458640] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.477644] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.488519] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.505930] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.521253] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.548153] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.565564] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.582577] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.611240] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.631661] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.643763] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.657762] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.680384] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.694587] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.719533] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.756357] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.771049] TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. [ 20.933432] syz-executor0: page allocation failure: order:0, mode:0x1080020(GFP_ATOMIC), nodemask=(null) [ 20.934263] syz-executor0 cpuset=/ mems_allowed=0-1 [ 20.934763] CPU: 0 PID: 3982 Comm: syz-executor0 Not tainted 4.13.0-rc5-next-20170815+ #3 [ 20.935470] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 20.936071] Call Trace: [ 20.936257] dump_stack+0x194/0x257 [ 20.936586] ? arch_local_irq_restore+0x53/0x53 [ 20.936971] ? isolate_lru_page+0x11d0/0x11d0 [ 20.937286] warn_alloc+0x1c2/0x2f0 [ 20.937523] ? zone_watermark_ok_safe+0x430/0x430 [ 20.937829] ? get_page_from_freelist+0x123e/0x3430 [ 20.938157] ? wake_all_kswapds+0x181/0x390 [ 20.938488] __alloc_pages_slowpath+0x26ce/0x2ee0 [ 20.938821] ? task_fork_fair+0x7b0/0x7b0 [ 20.939141] ? warn_alloc+0x2f0/0x2f0 [ 20.939393] ? dequeue_task_fair+0x16d8/0x68b0 [ 20.939694] ? __get_user_pages_fast+0xa22/0x2ea0 [ 20.940029] ? get_dump_page+0x150/0x150 [ 20.940307] ? dequeue_task_fair+0x16d8/0x68b0 [ 20.940610] ? trace_hardirqs_on+0xd/0x10 [ 20.940879] ? __get_user_pages_fast+0xa22/0x2ea0 [ 20.941221] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.941540] ? retint_kernel+0x10/0x10 [ 20.941791] __alloc_pages_nodemask+0x9f7/0xd80 [ 20.942098] ? __alloc_pages_slowpath+0x2ee0/0x2ee0 [ 20.942434] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.942745] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.943050] ? retint_kernel+0x10/0x10 [ 20.943314] alloc_pages_current+0xb6/0x1e0 [ 20.943598] skb_copy_ubufs+0x41d/0x1940 [ 20.943866] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 20.944221] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 20.944570] ? skb_release_data+0x790/0x790 [ 20.944854] ? lock_acquire+0x1d5/0x580 [ 20.945132] ? __is_insn_slot_addr+0x1fc/0x330 [ 20.945442] ? lock_downgrade+0x990/0x990 [ 20.945726] ? lock_release+0xa40/0xa40 [ 20.945998] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 20.946434] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 20.946770] ? bpf_prog_kallsyms_find+0xbd/0x440 [ 20.947105] ? lock_acquire+0x1d5/0x580 [ 20.947384] ? lock_acquire+0x1d5/0x580 [ 20.947654] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 20.948009] ? lock_release+0xa40/0xa40 [ 20.948295] ? __free_insn_slot+0x5c0/0x5c0 [ 20.948588] ? unwind_dump+0x4c0/0x4c0 [ 20.948858] __netif_receive_skb_core+0x2084/0x33d0 [ 20.949218] ? unwind_get_return_address+0x61/0xa0 [ 20.949557] ? nf_ingress+0x9f0/0x9f0 [ 20.949817] ? save_stack+0xa3/0xd0 [ 20.950073] ? save_stack_trace+0x16/0x20 [ 20.950373] ? save_stack+0x43/0xd0 [ 20.950618] ? kasan_kmalloc+0xad/0xe0 [ 20.950881] ? kasan_slab_alloc+0x12/0x20 [ 20.951185] ? kmem_cache_alloc+0x12e/0x760 [ 20.951479] ? __build_skb+0x9d/0x450 [ 20.951760] ? build_skb+0x6f/0x260 [ 20.952079] ? tun_get_user+0x1db7/0x2150 [ 20.952846] ? tun_chr_write_iter+0xd8/0x190 [ 20.953145] ? __vfs_write+0x684/0x970 [ 20.953413] ? vfs_write+0x189/0x510 [ 20.953667] ? SyS_write+0xef/0x220 [ 20.953905] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 20.954277] ? __skb_flow_dissect+0xfa1/0x3ae0 [ 20.954713] ? __sched_text_start+0x8/0x8 [ 20.955219] ? plist_check_list+0x7e/0xa0 [ 20.955650] ? __skb_flow_get_ports+0x400/0x400 [ 20.956085] ? lock_acquire+0x1d5/0x580 [ 20.956454] ? netif_receive_skb_internal+0x1d7/0x5e0 [ 20.956956] ? lock_downgrade+0x990/0x990 [ 20.957385] ? pvclock_read_flags+0x160/0x160 [ 20.957805] ? __build_skb+0x325/0x450 [ 20.958172] ? lock_acquire+0x1d5/0x580 [ 20.958567] ? lock_acquire+0x1d5/0x580 [ 20.958950] ? netif_receive_skb_internal+0x93/0x5e0 [ 20.959441] ? ktime_get_with_offset+0x2c1/0x420 [ 20.959918] ? lock_release+0xa40/0xa40 [ 20.960300] ? do_gettimeofday+0x190/0x190 [ 20.960693] ? __build_skb+0x450/0x450 [ 20.961350] __netif_receive_skb+0x2c/0x1b0 [ 20.961714] ? __netif_receive_skb+0x2c/0x1b0 [ 20.962134] netif_receive_skb_internal+0x10b/0x5e0 [ 20.962604] ? dev_cpu_dead+0xb00/0xb00 [ 20.962998] ? tun_device_event+0xca0/0xca0 [ 20.963722] ? futex_wake+0x680/0x680 [ 20.964376] ? __unqueue_futex+0x1c0/0x290 [ 20.964734] ? drop_futex_key_refs.isra.13+0x63/0xb0 [ 20.965245] netif_receive_skb+0xae/0x390 [ 20.965722] ? netif_receive_skb_internal+0x5e0/0x5e0 [ 20.966611] ? mark_wake_futex+0xc0/0x1c0 [ 20.967237] ? futex_wait_setup+0x3d0/0x3d0 [ 20.967662] ? tun_rx_batched.isra.43+0x5bd/0x860 [ 20.968151] tun_rx_batched.isra.43+0x5e7/0x860 [ 20.968607] ? skb_get_hash_perturb+0x9d0/0x9d0 [ 20.969103] ? tun_sock_write_space+0x370/0x370 [ 20.969767] ? tun_free_netdev+0x1b0/0x1b0 [ 20.970248] tun_get_user+0x11dd/0x2150 [ 20.970650] ? tun_flow_update+0xf70/0xf70 [ 20.971130] ? lock_acquire+0x1d5/0x580 [ 20.971505] ? lock_acquire+0x1d5/0x580 [ 20.971826] ? __tun_get+0x1ab/0x2e0 [ 20.972033] ? lock_downgrade+0x990/0x990 [ 20.972321] ? lock_release+0xa40/0xa40 [ 20.972896] ? __fget+0x35c/0x570 [ 20.973224] ? __tun_get+0x1d4/0x2e0 [ 20.973564] ? tun_chr_close+0x60/0x60 [ 20.973925] tun_chr_write_iter+0xd8/0x190 [ 20.974277] __vfs_write+0x684/0x970 [ 20.974515] ? default_llseek+0x290/0x290 [ 20.974804] ? _cond_resched+0x14/0x30 [ 20.975082] ? avc_policy_seqno+0x9/0x20 [ 20.975349] ? selinux_file_permission+0x82/0x460 [ 20.975688] ? rw_verify_area+0xe5/0x2b0 [ 20.975965] ? __fdget_raw+0x20/0x20 [ 20.976246] vfs_write+0x189/0x510 [ 20.976499] SyS_write+0xef/0x220 [ 20.976741] ? SyS_read+0x220/0x220 [ 20.976995] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 20.977372] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 20.977699] RIP: 0033:0x40bab1 [ 20.977919] RSP: 002b:00007ffbc9ef6c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 20.978697] RAX: ffffffffffffffda RBX: 0000000000000036 RCX: 000000000040bab1 [ 20.979172] RDX: 0000000000000036 RSI: 0000000020002000 RDI: 0000000000000003 [ 20.979568] RBP: 0000000000a5f870 R08: 0000000000000000 R09: 0000000000000000 [ 20.979963] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 20.980367] R13: 0000000000000000 R14: 00007ffbc9ef79c0 R15: 00007ffbc9ef7700 [ 20.980855] Mem-Info: [ 20.981161] active_anon:3318 inactive_anon:43 isolated_anon:0 [ 20.981161] active_file:1811 inactive_file:1852 isolated_file:32 [ 20.981161] unevictable:0 dirty:1511 writeback:500 unstable:0 [ 20.981161] slab_reclaimable:4730 slab_unreclaimable:27409 [ 20.981161] mapped:3134 shmem:49 pagetables:299 bounce:0 [ 20.981161] free:8544 free_pcp:1183 free_cma:0 [ 20.984417] Node 0 active_anon:8312kB inactive_anon:96kB active_file:4568kB inactive_file:4644kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:7888kB dirty:2404kB writeback:4096kB shmem:108kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 20.987076] Node 1 active_anon:4964kB inactive_anon:76kB active_file:1632kB inactive_file:1736kB unevictable:0kB isolated(anon):0kB isolated(file):128kB mapped:2840kB dirty:1540kB writeback:0kB shmem:88kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 20.989956] Node 0 DMA free:3744kB min:640kB low:800kB high:960kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 20.991912] lowmem_reserve[]: 0 884 884 884 [ 20.992358] Node 0 DMA32 free:18344kB min:36500kB low:45624kB high:54748kB active_anon:8312kB inactive_anon:96kB active_file:2376kB inactive_file:6860kB unevictable:0kB writepending:2948kB present:1032192kB managed:907904kB mlocked:0kB kernel_stack:2144kB pagetables:632kB bounce:0kB free_pcp:2520kB local_pcp:388kB free_cma:0kB [ 20.994911] lowmem_reserve[]: 0 0 0 0 [ 20.995285] Node 1 DMA32 free:15104kB min:30440kB low:38048kB high:45656kB active_anon:4964kB inactive_anon:76kB active_file:1636kB inactive_file:1732kB unevictable:0kB writepending:1536kB present:1048560kB managed:755224kB mlocked:0kB kernel_stack:1952kB pagetables:564kB bounce:0kB free_pcp:2844kB local_pcp:736kB free_cma:0kB [ 20.997539] lowmem_reserve[]: 0 0 0 0 [ 20.997794] Node 0 DMA: 0*4kB 0*8kB 0*16kB 1*32kB (U) 0*64kB 1*128kB (U) 0*256kB 1*512kB (U) 1*1024kB (U) 1*2048kB (M) 0*4096kB = 3744kB [ 20.998951] Node 0 DMA32: 429*4kB (UME) 227*8kB (UME) 147*16kB (UME) 64*32kB (UME) 20*64kB (UME) 6*128kB (UME) 4*256kB (UME) 3*512kB (ME) 1*1024kB (M) 1*2048kB (U) 1*4096kB (M) = 19708kB [ 21.001798] Node 1 DMA32: 382*4kB (UME) 185*8kB (ME) 67*16kB (UM) 24*32kB (ME) 6*64kB (ME) 3*128kB (UME) 1*256kB (U) 1*512kB (E) 1*1024kB (U) 2*2048kB (ME) 1*4096kB (M) = 15600kB [ 21.003446] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 21.004342] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 21.005028] 2335 total pagecache pages [ 21.005349] 0 pages in swap cache [ 21.005627] Swap cache stats: add 0, delete 0, find 0/0 [ 21.006093] Free swap = 0kB [ 21.006409] Total swap = 0kB [ 21.006709] 524186 pages RAM [ 21.007002] 0 pages HighMem/MovableOnly [ 21.007402] 104427 pages reserved [ 21.137831] kasan: CONFIG_KASAN_INLINE enabled [ 21.138287] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.138802] general protection fault: 0000 [#1] SMP KASAN [ 21.139193] Dumping ftrace buffer: [ 21.139440] (ftrace buffer empty) [ 21.139706] Modules linked in: [ 21.139962] CPU: 0 PID: 3982 Comm: syz-executor0 Not tainted 4.13.0-rc5-next-20170815+ #3 [ 21.140641] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 21.141351] task: ffff880069f265c0 task.stack: ffff880067688000 [ 21.141848] RIP: 0010:skb_release_data+0x26c/0x790 [ 21.142240] RSP: 0018:ffff88006768ef20 EFLAGS: 00010206 [ 21.142670] RAX: 00d70cb5b39acdeb RBX: dffffc0000000000 RCX: 1ffff1000ced1e13 [ 21.143250] RDX: 0000000000000000 RSI: ffff88003ec28c38 RDI: 06b865ad9cd66f59 [ 21.144200] RBP: ffff88006768f040 R08: ffffea0000ee74a0 R09: ffffed0007ab4200 [ 21.144898] R10: 0000000000028c28 R11: 0000000000000010 R12: ffff88003c5581b0 [ 21.145551] R13: ffffed000ced1dfb R14: 1ffff1000ced1df3 R15: 06b865ad9cd66f39 [ 21.146029] FS: 00007ffbc9ef7700(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000 [ 21.146577] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.146954] CR2: 000000002001aff0 CR3: 000000003d623000 CR4: 00000000000006f0 [ 21.147433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.147902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.148409] Call Trace: [ 21.148613] ? __is_insn_slot_addr+0x1fc/0x330 [ 21.148955] ? skb_tx_error+0x2c0/0x2c0 [ 21.149239] ? lock_release+0xa40/0xa40 [ 21.149501] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 21.149886] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 21.150224] skb_release_all+0x4a/0x60 [ 21.150477] kfree_skb+0x15d/0x4c0 [ 21.150708] ? __netif_receive_skb_core+0x10f8/0x33d0 [ 21.151115] ? __kfree_skb+0x20/0x20 [ 21.151403] ? __free_insn_slot+0x5c0/0x5c0 [ 21.151717] __netif_receive_skb_core+0x10f8/0x33d0 [ 21.152063] ? unwind_get_return_address+0x61/0xa0 [ 21.152387] ? nf_ingress+0x9f0/0x9f0 [ 21.152635] ? save_stack+0xa3/0xd0 [ 21.152898] ? save_stack_trace+0x16/0x20 [ 21.153205] ? save_stack+0x43/0xd0 [ 21.153444] ? kasan_kmalloc+0xad/0xe0 [ 21.153722] ? kasan_slab_alloc+0x12/0x20 [ 21.154020] ? kmem_cache_alloc+0x12e/0x760 [ 21.154324] ? __build_skb+0x9d/0x450 [ 21.154611] ? build_skb+0x6f/0x260 [ 21.154875] ? tun_get_user+0x1db7/0x2150 [ 21.155211] ? tun_chr_write_iter+0xd8/0x190 [ 21.155503] ? __vfs_write+0x684/0x970 [ 21.155795] ? vfs_write+0x189/0x510 [ 21.156088] ? SyS_write+0xef/0x220 [ 21.156325] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 21.156702] ? __skb_flow_dissect+0xfa1/0x3ae0 [ 21.156993] ? __sched_text_start+0x8/0x8 [ 21.157254] ? plist_check_list+0x7e/0xa0 [ 21.157531] ? __skb_flow_get_ports+0x400/0x400 [ 21.157824] ? lock_acquire+0x1d5/0x580 [ 21.158103] ? netif_receive_skb_internal+0x1d7/0x5e0 [ 21.158502] ? lock_downgrade+0x990/0x990 [ 21.158776] ? pvclock_read_flags+0x160/0x160 [ 21.159062] ? __build_skb+0x325/0x450 [ 21.159341] ? lock_acquire+0x1d5/0x580 [ 21.159644] ? lock_acquire+0x1d5/0x580 [ 21.160038] ? netif_receive_skb_internal+0x93/0x5e0 [ 21.160388] ? ktime_get_with_offset+0x2c1/0x420 [ 21.160706] ? lock_release+0xa40/0xa40 [ 21.161003] ? do_gettimeofday+0x190/0x190 [ 21.161297] ? __build_skb+0x450/0x450 [ 21.161551] __netif_receive_skb+0x2c/0x1b0 [ 21.161829] ? __netif_receive_skb+0x2c/0x1b0 [ 21.162139] netif_receive_skb_internal+0x10b/0x5e0 [ 21.162470] ? dev_cpu_dead+0xb00/0xb00 [ 21.162736] ? tun_device_event+0xca0/0xca0 [ 21.163088] ? futex_wake+0x680/0x680 [ 21.163341] ? __unqueue_futex+0x1c0/0x290 [ 21.163671] ? drop_futex_key_refs.isra.13+0x63/0xb0 [ 21.164031] netif_receive_skb+0xae/0x390 [ 21.164340] ? netif_receive_skb_internal+0x5e0/0x5e0 [ 21.165059] ? mark_wake_futex+0xc0/0x1c0 [ 21.165407] ? futex_wait_setup+0x3d0/0x3d0 [ 21.165766] ? tun_rx_batched.isra.43+0x5bd/0x860 [ 21.166176] tun_rx_batched.isra.43+0x5e7/0x860 [ 21.166577] ? skb_get_hash_perturb+0x9d0/0x9d0 [ 21.166961] ? tun_sock_write_space+0x370/0x370 [ 21.167352] ? tun_free_netdev+0x1b0/0x1b0 [ 21.167710] tun_get_user+0x11dd/0x2150 [ 21.168049] ? tun_flow_update+0xf70/0xf70 [ 21.168407] ? lock_acquire+0x1d5/0x580 [ 21.168737] ? lock_acquire+0x1d5/0x580 [ 21.169069] ? __tun_get+0x1ab/0x2e0 [ 21.169375] ? lock_downgrade+0x990/0x990 [ 21.169728] ? lock_release+0xa40/0xa40 [ 21.170100] ? __fget+0x35c/0x570 [ 21.170437] ? __tun_get+0x1d4/0x2e0 [ 21.170782] ? tun_chr_close+0x60/0x60 [ 21.171177] tun_chr_write_iter+0xd8/0x190 [ 21.171571] __vfs_write+0x684/0x970 [ 21.171883] ? default_llseek+0x290/0x290 [ 21.172247] ? _cond_resched+0x14/0x30 [ 21.172626] ? avc_policy_seqno+0x9/0x20 [ 21.172965] ? selinux_file_permission+0x82/0x460 [ 21.173442] ? rw_verify_area+0xe5/0x2b0 [ 21.173819] ? __fdget_raw+0x20/0x20 [ 21.174132] vfs_write+0x189/0x510 [ 21.174436] SyS_write+0xef/0x220 [ 21.174727] ? SyS_read+0x220/0x220 [ 21.175029] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 21.175456] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 21.175862] RIP: 0033:0x40bab1 [ 21.176171] RSP: 002b:00007ffbc9ef6c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 21.176832] RAX: ffffffffffffffda RBX: 0000000000000036 RCX: 000000000040bab1 [ 21.177454] RDX: 0000000000000036 RSI: 0000000020002000 RDI: 0000000000000003 [ 21.178042] RBP: 0000000000a5f870 R08: 0000000000000000 R09: 0000000000000000 [ 21.178646] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 21.179246] R13: 0000000000000000 R14: 00007ffbc9ef79c0 R15: 00007ffbc9ef7700 [ 21.179846] 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 [ 21.181502] RIP: skb_release_data+0x26c/0x790 RSP: ffff88006768ef20 [ 21.182042] ---[ end trace 54050eb1ec52ff83 ]--- [ 21.182431] Kernel panic - not syncing: Fatal exception in interrupt [ 21.183043] Dumping ftrace buffer: [ 21.183340] (ftrace buffer empty) [ 21.183647] Kernel Offset: disabled [ 21.183954] Rebooting in 86400 seconds..