[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.030409][ T27] audit: type=1800 audit(1561297672.545:25): pid=8734 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.074273][ T27] audit: type=1800 audit(1561297672.545:26): pid=8734 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.095400][ T27] audit: type=1800 audit(1561297672.545:27): pid=8734 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 '10.128.0.226' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 79.248413][ T8892] IPVS: ftp: loaded support on port[0] = 21 [ 79.284586][ T8894] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.318899][ T8896] IPVS: ftp: loaded support on port[0] = 21 [ 79.358831][ T8898] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.396097][ T8900] IPVS: ftp: loaded support on port[0] = 21 [ 79.432471][ T8902] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.468069][ T8904] IPVS: ftp: loaded support on port[0] = 21 [ 79.502992][ T8906] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.537096][ T8908] IPVS: ftp: loaded support on port[0] = 21 [ 79.569375][ T8910] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.603999][ T8912] IPVS: ftp: loaded support on port[0] = 21 [ 79.638117][ T8914] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.672215][ T8916] IPVS: ftp: loaded support on port[0] = 21 [ 79.707857][ T8918] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.745896][ T8920] IPVS: ftp: loaded support on port[0] = 21 [ 79.778926][ T8922] IPVS: ftp: loaded support on port[0] = 21 [ 79.814297][ T8924] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program [ 79.912864][ T8927] IPVS: ftp: loaded support on port[0] = 21 [ 79.947723][ T8929] IPVS: ftp: loaded support on port[0] = 21 executing program [ 79.981264][ T8931] IPVS: ftp: loaded support on port[0] = 21 [ 80.015775][ T8933] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 80.073907][ T8935] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.130778][ T8937] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.188891][ T8939] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.241855][ T8941] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.300090][ T8943] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.358091][ T8945] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.414985][ T8947] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.489424][ T8949] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.559558][ T8951] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.629558][ T8953] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.699356][ T8955] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.769399][ T8957] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.839114][ T8959] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.901273][ T8961] IPVS: ftp: loaded support on port[0] = 21 executing program [ 80.960039][ T8963] IPVS: ftp: loaded support on port[0] = 21 executing program [ 81.019039][ T8965] IPVS: ftp: loaded support on port[0] = 21 executing program [ 81.061686][ T8967] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.121525][ T8969] IPVS: ftp: loaded support on port[0] = 21 [ 81.156665][ T8971] IPVS: ftp: loaded support on port[0] = 21 executing program [ 81.192505][ T8973] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.235853][ T8975] IPVS: ftp: loaded support on port[0] = 21 [ 81.272282][ T8977] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.307146][ T8979] IPVS: ftp: loaded support on port[0] = 21 [ 81.341502][ T8981] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.376271][ T8983] IPVS: ftp: loaded support on port[0] = 21 [ 81.412367][ T8985] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.445708][ T8987] IPVS: ftp: loaded support on port[0] = 21 [ 81.480576][ T8989] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.517398][ T8991] IPVS: ftp: loaded support on port[0] = 21 [ 81.552929][ T8993] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.588897][ T8995] IPVS: ftp: loaded support on port[0] = 21 [ 81.624735][ T8997] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.658734][ T8999] IPVS: ftp: loaded support on port[0] = 21 [ 81.695043][ T9001] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.730679][ T9003] IPVS: ftp: loaded support on port[0] = 21 [ 81.766294][ T9005] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.802518][ T9007] IPVS: ftp: loaded support on port[0] = 21 [ 81.838136][ T9009] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.872818][ T9011] IPVS: ftp: loaded support on port[0] = 21 [ 81.908627][ T9013] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 81.945373][ T9015] IPVS: ftp: loaded support on port[0] = 21 [ 81.981624][ T9017] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.016110][ T9019] IPVS: ftp: loaded support on port[0] = 21 [ 82.051538][ T9021] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.088223][ T9023] IPVS: ftp: loaded support on port[0] = 21 [ 82.125135][ T9025] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.164488][ T9027] IPVS: ftp: loaded support on port[0] = 21 [ 82.203958][ T9029] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.239406][ T9031] IPVS: ftp: loaded support on port[0] = 21 [ 82.276820][ T9033] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.313096][ T9035] IPVS: ftp: loaded support on port[0] = 21 [ 82.349379][ T9037] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.386832][ T9039] IPVS: ftp: loaded support on port[0] = 21 [ 82.421641][ T9041] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.457994][ T9043] IPVS: ftp: loaded support on port[0] = 21 [ 82.495018][ T9045] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.532514][ T9047] IPVS: ftp: loaded support on port[0] = 21 [ 82.567266][ T9049] IPVS: ftp: loaded support on port[0] = 21 executing program [ 82.603398][ T9051] IPVS: ftp: loaded support on port[0] = 21 [ 82.639554][ T9053] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.737422][ T9055] IPVS: ftp: loaded support on port[0] = 21 [ 82.779222][ T9057] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 82.865379][ T9059] IPVS: ftp: loaded support on port[0] = 21 [ 82.921359][ T9061] IPVS: ftp: loaded support on port[0] = 21 executing program [ 83.005544][ T9063] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 83.105236][ T9065] IPVS: ftp: loaded support on port[0] = 21 [ 83.164234][ T9067] IPVS: ftp: loaded support on port[0] = 21 executing program [ 83.249732][ T9069] IPVS: ftp: loaded support on port[0] = 21 executing program [ 83.355956][ T9071] IPVS: ftp: loaded support on port[0] = 21 executing program [ 83.459869][ T9073] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 83.545829][ T9075] IPVS: ftp: loaded support on port[0] = 21 [ 83.579582][ T9077] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 83.662816][ T9079] IPVS: ftp: loaded support on port[0] = 21 [ 83.709454][ T9081] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 83.806120][ T9083] IPVS: ftp: loaded support on port[0] = 21 [ 83.850850][ T9086] IPVS: ftp: loaded support on port[0] = 21 [ 84.303982][ T9086] kasan: CONFIG_KASAN_INLINE enabled [ 84.309480][ T9086] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 84.317696][ T9086] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 84.324809][ T9086] CPU: 1 PID: 9086 Comm: syz-executor646 Not tainted 5.2.0-rc5+ #41 [ 84.332773][ T9086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.342876][ T9086] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 84.348066][ T9086] Code: 01 00 00 00 48 c7 c7 00 37 da 88 e8 ce 65 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 [ 84.367662][ T9086] RSP: 0018:ffff88807e58fb10 EFLAGS: 00010206 [ 84.373725][ T9086] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff1101212657e [ 84.381698][ T9086] RDX: 000000000000000a RSI: 1ffff11012126585 RDI: 0000000000000286 [ 84.389686][ T9086] RBP: ffff88807e58fb50 R08: ffff888090932380 R09: 0000000000000002 [ 84.397673][ T9086] R10: ffffed1015d26c77 R11: ffff8880ae9363bb R12: 0000000000000000 [ 84.405640][ T9086] R13: ffff888097bca1c0 R14: ffff8880a8162d80 R15: dffffc0000000000 [ 84.413606][ T9086] FS: 00007f2181753700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 84.422526][ T9086] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.429103][ T9086] CR2: 00007f2181752e78 CR3: 0000000097a16000 CR4: 00000000001406e0 [ 84.437070][ T9086] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.445039][ T9086] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.453173][ T9086] Call Trace: [ 84.456530][ T9086] ? kasan_check_read+0x11/0x20 [ 84.461405][ T9086] ovs_exit_net+0x1f8/0xc30 [ 84.465930][ T9086] ? synchronize_rcu.part.0+0xcf/0xe0 [ 84.471299][ T9086] ? kfree_call_rcu+0x10/0x10 [ 84.475980][ T9086] ? ovs_dp_cmd_del+0x270/0x270 [ 84.480846][ T9086] ? ovs_dp_cmd_del+0x270/0x270 [ 84.485723][ T9086] ops_exit_list.isra.0+0xaa/0x150 [ 84.490999][ T9086] setup_net+0x518/0x870 [ 84.495261][ T9086] ? ops_init+0x410/0x410 [ 84.499584][ T9086] ? kasan_check_write+0x14/0x20 [ 84.504541][ T9086] ? down_read_killable+0x51/0x220 [ 84.509759][ T9086] copy_net_ns+0x1df/0x340 [ 84.514198][ T9086] create_new_namespaces+0x400/0x7b0 [ 84.519594][ T9086] unshare_nsproxy_namespaces+0xc2/0x200 [ 84.525278][ T9086] ksys_unshare+0x440/0x980 [ 84.529783][ T9086] ? walk_process_tree+0x2c0/0x2c0 [ 84.534889][ T9086] ? up_read+0xc4/0x200 [ 84.539150][ T9086] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 84.544714][ T9086] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.550792][ T9086] ? do_syscall_64+0x26/0x680 [ 84.555551][ T9086] ? lockdep_hardirqs_on+0x418/0x5d0 [ 84.560837][ T9086] __x64_sys_unshare+0x31/0x40 [ 84.565620][ T9086] do_syscall_64+0xfd/0x680 [ 84.570120][ T9086] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.575999][ T9086] RIP: 0033:0x4465f9 [ 84.579887][ T9086] 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 [ 84.599679][ T9086] RSP: 002b:00007f2181752db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 84.608089][ T9086] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004465f9 [ 84.616054][ T9086] RDX: 0000000000402634 RSI: ff54b6e978161331 RDI: 0000000040000000 [ 84.624027][ T9086] RBP: 00000000006dbc20 R08: 00007f2181753700 R09: 0000000000000000 [ 84.631995][ T9086] R10: 00007f2181753700 R11: 0000000000000246 R12: 00000000006dbc2c [ 84.639979][ T9086] R13: 00007fffff202b3f R14: 00007f21817539c0 R15: 0000000000000000 [ 84.647969][ T9086] Modules linked in: [ 84.652608][ T9086] ---[ end trace 410ddc0be489914b ]--- [ 84.658149][ T9086] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 84.663509][ T9086] Code: 01 00 00 00 48 c7 c7 00 37 da 88 e8 ce 65 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 [ 84.683361][ T9086] RSP: 0018:ffff88807e58fb10 EFLAGS: 00010206 [ 84.689526][ T9086] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff1101212657e [ 84.697667][ T9086] RDX: 000000000000000a RSI: 1ffff11012126585 RDI: 0000000000000286 [ 84.705701][ T9086] RBP: ffff88807e58fb50 R08: ffff888090932380 R09: 0000000000000002 [ 84.713683][ T9086] R10: ffffed1015d26c77 R11: ffff8880ae9363bb R12: 0000000000000000 [ 84.721755][ T9086] R13: ffff888097bca1c0 R14: ffff8880a8162d80 R15: dffffc0000000000 [ 84.729772][ T9086] FS: 00007f2181753700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 84.738939][ T9086] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.745564][ T9086] CR2: 00007f2181752e78 CR3: 0000000097a16000 CR4: 00000000001406e0 [ 84.753553][ T9086] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.761592][ T9086] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.769640][ T9086] Kernel panic - not syncing: Fatal exception [ 84.776553][ T9086] Kernel Offset: disabled [ 84.780914][ T9086] Rebooting in 86400 seconds..