[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 51.670121][ T26] audit: type=1800 audit(1561259787.352:25): pid=8310 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 51.710579][ T26] audit: type=1800 audit(1561259787.352:26): pid=8310 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 51.749873][ T26] audit: type=1800 audit(1561259787.352:27): pid=8310 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 62.847683][ T8468] IPVS: ftp: loaded support on port[0] = 21 [ 62.881568][ T8470] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program [ 62.912068][ T8472] IPVS: ftp: loaded support on port[0] = 21 [ 62.944674][ T8474] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 62.980529][ T8476] IPVS: ftp: loaded support on port[0] = 21 [ 63.014564][ T8478] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.049031][ T8480] IPVS: ftp: loaded support on port[0] = 21 [ 63.083163][ T8482] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.118058][ T8484] IPVS: ftp: loaded support on port[0] = 21 [ 63.147998][ T8486] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.184821][ T8488] IPVS: ftp: loaded support on port[0] = 21 [ 63.218984][ T8490] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.251239][ T8492] IPVS: ftp: loaded support on port[0] = 21 [ 63.285930][ T8494] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.321363][ T8496] IPVS: ftp: loaded support on port[0] = 21 [ 63.357568][ T8498] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.440189][ T8501] IPVS: ftp: loaded support on port[0] = 21 [ 63.473514][ T8504] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.532653][ T8506] IPVS: ftp: loaded support on port[0] = 21 [ 63.602520][ T8508] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 63.672772][ T8510] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.734645][ T8512] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.794499][ T8514] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.854606][ T8516] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.914707][ T8518] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.974622][ T8520] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.034601][ T8522] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.094501][ T8524] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.154633][ T8526] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.215768][ T8528] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.272158][ T8530] IPVS: ftp: loaded support on port[0] = 21 [ 64.304575][ T8532] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.339768][ T8534] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.389496][ T8536] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.437976][ T8538] IPVS: ftp: loaded support on port[0] = 21 [ 64.471444][ T8540] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.503533][ T8542] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.548441][ T8544] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.600703][ T8546] IPVS: ftp: loaded support on port[0] = 21 [ 64.632732][ T8548] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.663312][ T8550] IPVS: ftp: loaded support on port[0] = 21 [ 64.703440][ T8552] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.737295][ T8554] IPVS: ftp: loaded support on port[0] = 21 [ 64.768959][ T8556] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.800786][ T8558] IPVS: ftp: loaded support on port[0] = 21 [ 64.831912][ T8560] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.863251][ T8562] IPVS: ftp: loaded support on port[0] = 21 [ 64.895434][ T8564] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.929273][ T8566] IPVS: ftp: loaded support on port[0] = 21 [ 64.962723][ T8568] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 64.995827][ T8570] IPVS: ftp: loaded support on port[0] = 21 [ 65.028772][ T8572] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.059458][ T8574] IPVS: ftp: loaded support on port[0] = 21 [ 65.090842][ T8576] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.123231][ T8578] IPVS: ftp: loaded support on port[0] = 21 [ 65.155421][ T8580] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.185929][ T8582] IPVS: ftp: loaded support on port[0] = 21 [ 65.217304][ T8584] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.248842][ T8586] IPVS: ftp: loaded support on port[0] = 21 [ 65.279036][ T8588] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.310683][ T8590] IPVS: ftp: loaded support on port[0] = 21 [ 65.344311][ T8592] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.374780][ T8594] IPVS: ftp: loaded support on port[0] = 21 [ 65.404685][ T8596] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.435902][ T8598] IPVS: ftp: loaded support on port[0] = 21 [ 65.468017][ T8600] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.500905][ T8602] IPVS: ftp: loaded support on port[0] = 21 [ 65.534323][ T8604] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.565044][ T8606] IPVS: ftp: loaded support on port[0] = 21 [ 65.598100][ T8608] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.631053][ T8610] IPVS: ftp: loaded support on port[0] = 21 [ 65.662989][ T8612] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.694457][ T8614] IPVS: ftp: loaded support on port[0] = 21 [ 65.725599][ T8616] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.757053][ T8618] IPVS: ftp: loaded support on port[0] = 21 [ 65.789920][ T8620] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.821009][ T8622] IPVS: ftp: loaded support on port[0] = 21 [ 65.853952][ T8624] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.884895][ T8626] IPVS: ftp: loaded support on port[0] = 21 [ 65.916009][ T8628] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 65.948855][ T8630] IPVS: ftp: loaded support on port[0] = 21 [ 65.980631][ T8632] IPVS: ftp: loaded support on port[0] = 21 [ 66.012135][ T8634] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.099025][ T8636] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 66.187601][ T8638] IPVS: ftp: loaded support on port[0] = 21 [ 66.227254][ T8640] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.325781][ T8642] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.393889][ T8644] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.482769][ T8646] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.577750][ T8648] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.677131][ T8650] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.754469][ T8652] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 66.831686][ T8654] IPVS: ftp: loaded support on port[0] = 21 [ 66.874572][ T8656] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.955647][ T8658] IPVS: ftp: loaded support on port[0] = 21 [ 67.369910][ T8658] kasan: CONFIG_KASAN_INLINE enabled [ 67.375404][ T8658] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 67.383543][ T8658] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 67.390520][ T8658] CPU: 0 PID: 8658 Comm: syz-executor880 Not tainted 5.2.0-rc5+ #40 [ 67.398474][ T8658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.408520][ T8658] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 67.413741][ T8658] Code: 01 00 00 00 48 c7 c7 00 37 da 88 e8 ee 76 44 fa 49 8d 44 24 50 48 89 c2 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 67.433336][ T8658] RSP: 0018:ffff888092a57b10 EFLAGS: 00010206 [ 67.439406][ T8658] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff110134d7d46 [ 67.447356][ T8658] RDX: 000000000000000a RSI: 1ffff110134d7d4d RDI: 0000000000000282 [ 67.455328][ T8658] RBP: ffff888092a57b50 R08: ffff88809a6be1c0 R09: 0000000000000002 [ 67.463305][ T8658] R10: ffffed1015d06c77 R11: ffff8880ae8363bb R12: 0000000000000000 [ 67.471274][ T8658] R13: ffff88809fd56140 R14: ffff888089cd5240 R15: dffffc0000000000 [ 67.479247][ T8658] FS: 00007f1b81286700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 67.488154][ T8658] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.494714][ T8658] CR2: 00000000004cc870 CR3: 00000000a0d19000 CR4: 00000000001406f0 [ 67.502674][ T8658] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.510626][ T8658] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.518612][ T8658] Call Trace: [ 67.521886][ T8658] ? kasan_check_read+0x11/0x20 [ 67.526717][ T8658] ovs_exit_net+0x1f8/0xc30 [ 67.531207][ T8658] ? synchronize_rcu.part.0+0xcf/0xe0 [ 67.536592][ T8658] ? kfree_call_rcu+0x10/0x10 [ 67.541248][ T8658] ? ovs_dp_cmd_del+0x270/0x270 [ 67.546075][ T8658] ? ovs_dp_cmd_del+0x270/0x270 [ 67.550904][ T8658] ops_exit_list.isra.0+0xaa/0x150 [ 67.555991][ T8658] setup_net+0x518/0x870 [ 67.560241][ T8658] ? ops_init+0x410/0x410 [ 67.564550][ T8658] ? kasan_check_write+0x14/0x20 [ 67.569638][ T8658] ? down_read_killable+0x51/0x220 [ 67.574733][ T8658] copy_net_ns+0x1df/0x340 [ 67.579130][ T8658] create_new_namespaces+0x400/0x7b0 [ 67.584428][ T8658] unshare_nsproxy_namespaces+0xc2/0x200 [ 67.590053][ T8658] ksys_unshare+0x440/0x980 [ 67.594550][ T8658] ? walk_process_tree+0x2c0/0x2c0 [ 67.599646][ T8658] ? up_read+0xc4/0x200 [ 67.603790][ T8658] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 67.609235][ T8658] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.615300][ T8658] ? do_syscall_64+0x26/0x680 [ 67.619958][ T8658] ? lockdep_hardirqs_on+0x418/0x5d0 [ 67.625228][ T8658] __x64_sys_unshare+0x31/0x40 [ 67.629971][ T8658] do_syscall_64+0xfd/0x680 [ 67.634468][ T8658] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.640335][ T8658] RIP: 0033:0x4465f9 [ 67.644213][ T8658] Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 67.663794][ T8658] RSP: 002b:00007f1b81285db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 67.672181][ T8658] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004465f9 [ 67.680136][ T8658] RDX: 0000000000402634 RSI: 1fea0756f798595e RDI: 0000000060000000 [ 67.688085][ T8658] RBP: 00000000006dbc20 R08: 00007f1b81286700 R09: 0000000000000000 [ 67.696052][ T8658] R10: 00007f1b81286700 R11: 0000000000000246 R12: 00000000006dbc2c [ 67.704005][ T8658] R13: 00007ffeb8eb971f R14: 00007f1b812869c0 R15: 0000000000000000 [ 67.711981][ T8658] Modules linked in: [ 67.717330][ T8658] ---[ end trace ce8cc928e00bc4c7 ]--- [ 67.722859][ T8658] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 67.728040][ T8658] Code: 01 00 00 00 48 c7 c7 00 37 da 88 e8 ee 76 44 fa 49 8d 44 24 50 48 89 c2 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 67.747681][ T8658] RSP: 0018:ffff888092a57b10 EFLAGS: 00010206 [ 67.753763][ T8658] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff110134d7d46 [ 67.761738][ T8658] RDX: 000000000000000a RSI: 1ffff110134d7d4d RDI: 0000000000000282 [ 67.769791][ T8658] RBP: ffff888092a57b50 R08: ffff88809a6be1c0 R09: 0000000000000002 [ 67.777753][ T8658] R10: ffffed1015d06c77 R11: ffff8880ae8363bb R12: 0000000000000000 [ 67.785777][ T8658] R13: ffff88809fd56140 R14: ffff888089cd5240 R15: dffffc0000000000 [ 67.793775][ T8658] FS: 00007f1b81286700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 67.802710][ T8658] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.809287][ T8658] CR2: ffffffffff600400 CR3: 00000000a0d19000 CR4: 00000000001406f0 [ 67.817449][ T8658] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.825437][ T8658] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.833510][ T8658] Kernel panic - not syncing: Fatal exception [ 67.840727][ T8658] Kernel Offset: disabled [ 67.845050][ T8658] Rebooting in 86400 seconds..