[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 64.957314][ T27] audit: type=1800 audit(1561238959.164:25): pid=8659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 64.991693][ T27] audit: type=1800 audit(1561238959.164:26): pid=8659 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.013220][ T27] audit: type=1800 audit(1561238959.164:27): pid=8659 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 '10.128.0.154' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 74.365464][ T8816] IPVS: ftp: loaded support on port[0] = 21 [ 74.401931][ T8818] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.437376][ T8820] IPVS: ftp: loaded support on port[0] = 21 [ 74.471960][ T8822] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.516406][ T8824] IPVS: ftp: loaded support on port[0] = 21 [ 74.554546][ T8826] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.590186][ T8828] IPVS: ftp: loaded support on port[0] = 21 [ 74.627487][ T8830] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.664671][ T8832] IPVS: ftp: loaded support on port[0] = 21 [ 74.697787][ T8834] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.736634][ T8836] IPVS: ftp: loaded support on port[0] = 21 [ 74.773382][ T8838] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.810119][ T8840] IPVS: ftp: loaded support on port[0] = 21 [ 74.847768][ T8842] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.882743][ T8844] IPVS: ftp: loaded support on port[0] = 21 [ 74.921722][ T8846] IPVS: ftp: loaded support on port[0] = 21 executing program [ 74.961771][ T8848] IPVS: ftp: loaded support on port[0] = 21 [ 74.995056][ T8850] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program [ 75.070423][ T8854] IPVS: ftp: loaded support on port[0] = 21 [ 75.104758][ T8856] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.140298][ T8858] IPVS: ftp: loaded support on port[0] = 21 [ 75.214529][ T8860] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.285531][ T8862] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.364734][ T8864] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 75.437956][ T8866] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.507084][ T8868] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.577341][ T8870] IPVS: ftp: loaded support on port[0] = 21 [ 75.647142][ T8872] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.727431][ T8874] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 75.804594][ T8876] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.857898][ T8878] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.921915][ T8880] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 75.980408][ T8882] IPVS: ftp: loaded support on port[0] = 21 [ 76.019483][ T8884] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.065500][ T8886] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.125939][ T8888] IPVS: ftp: loaded support on port[0] = 21 [ 76.161915][ T8890] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.197366][ T8892] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.244056][ T8894] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.304599][ T8896] IPVS: ftp: loaded support on port[0] = 21 [ 76.340836][ T8898] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.378552][ T8900] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.420778][ T8902] IPVS: ftp: loaded support on port[0] = 21 [ 76.457760][ T8904] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.491366][ T8906] IPVS: ftp: loaded support on port[0] = 21 [ 76.527108][ T8908] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.563304][ T8910] IPVS: ftp: loaded support on port[0] = 21 [ 76.599757][ T8912] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.637595][ T8914] IPVS: ftp: loaded support on port[0] = 21 [ 76.672388][ T8916] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.707729][ T8918] IPVS: ftp: loaded support on port[0] = 21 [ 76.743888][ T8920] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.780055][ T8922] IPVS: ftp: loaded support on port[0] = 21 [ 76.814755][ T8924] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.849359][ T8926] IPVS: ftp: loaded support on port[0] = 21 [ 76.886268][ T8928] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.922089][ T8930] IPVS: ftp: loaded support on port[0] = 21 [ 76.957968][ T8932] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.991320][ T8934] IPVS: ftp: loaded support on port[0] = 21 [ 77.030088][ T8936] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.067843][ T8938] IPVS: ftp: loaded support on port[0] = 21 [ 77.103735][ T8940] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.140896][ T8942] IPVS: ftp: loaded support on port[0] = 21 [ 77.176926][ T8944] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.216207][ T8946] IPVS: ftp: loaded support on port[0] = 21 [ 77.254089][ T8948] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.291865][ T8950] IPVS: ftp: loaded support on port[0] = 21 [ 77.328779][ T8952] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.386526][ T8954] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.442209][ T8956] IPVS: ftp: loaded support on port[0] = 21 [ 77.478026][ T8958] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.517056][ T8960] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.574510][ T8962] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.616756][ T8964] IPVS: ftp: loaded support on port[0] = 21 [ 77.654698][ T8966] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.692490][ T8968] IPVS: ftp: loaded support on port[0] = 21 [ 77.728075][ T8970] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.763340][ T8972] IPVS: ftp: loaded support on port[0] = 21 [ 77.801237][ T8974] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.837425][ T8976] IPVS: ftp: loaded support on port[0] = 21 [ 77.875364][ T8978] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.910936][ T8980] IPVS: ftp: loaded support on port[0] = 21 [ 77.948273][ T8982] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.046710][ T8984] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 78.143037][ T8986] IPVS: ftp: loaded support on port[0] = 21 [ 78.188346][ T8988] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.280736][ T8990] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.378514][ T8992] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 78.478497][ T8994] IPVS: ftp: loaded support on port[0] = 21 [ 78.520169][ T8996] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.617834][ T8998] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.726112][ T9000] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.813419][ T9002] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.898571][ T9004] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 79.005667][ T9006] IPVS: ftp: loaded support on port[0] = 21 [ 79.041454][ T9008] IPVS: ftp: loaded support on port[0] = 21 [ 79.241782][ T9008] kasan: CONFIG_KASAN_INLINE enabled [ 79.247277][ T9008] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.255474][ T9008] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 79.262455][ T9008] CPU: 1 PID: 9008 Comm: syz-executor342 Not tainted 5.2.0-rc5+ #40 [ 79.270407][ T9008] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.280500][ T9008] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 79.285677][ T9008] 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 [ 79.305869][ T9008] RSP: 0018:ffff8880908e7b10 EFLAGS: 00010206 [ 79.311925][ T9008] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff1101304e18e [ 79.319879][ T9008] RDX: 000000000000000a RSI: 1ffff1101304e195 RDI: 0000000000000282 [ 79.327837][ T9008] RBP: ffff8880908e7b50 R08: ffff888098270400 R09: 0000000000000002 [ 79.336033][ T9008] R10: ffffed1015d26c77 R11: ffff8880ae9363bb R12: 0000000000000000 [ 79.346117][ T9008] R13: ffff8880940e6180 R14: ffff88808fed4dc0 R15: dffffc0000000000 [ 79.354125][ T9008] FS: 00007ff1cd893700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.363091][ T9008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.369658][ T9008] CR2: 00000000004cc870 CR3: 000000009910b000 CR4: 00000000001406e0 [ 79.377610][ T9008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.385563][ T9008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.393516][ T9008] Call Trace: [ 79.396827][ T9008] ? kasan_check_read+0x11/0x20 [ 79.401669][ T9008] ovs_exit_net+0x1f8/0xc30 [ 79.406216][ T9008] ? synchronize_rcu.part.0+0xcf/0xe0 [ 79.411572][ T9008] ? kfree_call_rcu+0x10/0x10 [ 79.416229][ T9008] ? ovs_dp_cmd_del+0x270/0x270 [ 79.421098][ T9008] ? ovs_dp_cmd_del+0x270/0x270 [ 79.425964][ T9008] ops_exit_list.isra.0+0xaa/0x150 [ 79.431061][ T9008] setup_net+0x518/0x870 [ 79.435301][ T9008] ? ops_init+0x410/0x410 [ 79.439619][ T9008] ? kasan_check_write+0x14/0x20 [ 79.444563][ T9008] ? down_read_killable+0x51/0x220 [ 79.449666][ T9008] copy_net_ns+0x1df/0x340 [ 79.454078][ T9008] create_new_namespaces+0x400/0x7b0 [ 79.459413][ T9008] unshare_nsproxy_namespaces+0xc2/0x200 [ 79.465064][ T9008] ksys_unshare+0x440/0x980 [ 79.469578][ T9008] ? walk_process_tree+0x2c0/0x2c0 [ 79.474687][ T9008] ? up_read+0xc4/0x200 [ 79.478860][ T9008] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 79.484321][ T9008] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.490399][ T9008] ? do_syscall_64+0x26/0x680 [ 79.495207][ T9008] ? lockdep_hardirqs_on+0x418/0x5d0 [ 79.500522][ T9008] __x64_sys_unshare+0x31/0x40 [ 79.505290][ T9008] do_syscall_64+0xfd/0x680 [ 79.509826][ T9008] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.515725][ T9008] RIP: 0033:0x4465f9 [ 79.519631][ T9008] 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 [ 79.540316][ T9008] RSP: 002b:00007ff1cd892db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 79.548724][ T9008] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004465f9 [ 79.556687][ T9008] RDX: 0000000000402634 RSI: 754866fd48e7b0a5 RDI: 0000000040000000 [ 79.564650][ T9008] RBP: 00000000006dbc20 R08: 00007ff1cd893700 R09: 0000000000000000 [ 79.572625][ T9008] R10: 00007ff1cd893700 R11: 0000000000000246 R12: 00000000006dbc2c [ 79.580588][ T9008] R13: 00007ffcec03b68f R14: 00007ff1cd8939c0 R15: 0000000000000000 [ 79.588553][ T9008] Modules linked in: [ 79.592720][ T9008] ---[ end trace 6a8ce22e9b1f6ea0 ]--- [ 79.598202][ T9008] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 79.603507][ T9008] 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 [ 79.623201][ T9008] RSP: 0018:ffff8880908e7b10 EFLAGS: 00010206 [ 79.629624][ T9008] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff1101304e18e [ 79.637768][ T9008] RDX: 000000000000000a RSI: 1ffff1101304e195 RDI: 0000000000000282 [ 79.645833][ T9008] RBP: ffff8880908e7b50 R08: ffff888098270400 R09: 0000000000000002 [ 79.653881][ T9008] R10: ffffed1015d26c77 R11: ffff8880ae9363bb R12: 0000000000000000 [ 79.661913][ T9008] R13: ffff8880940e6180 R14: ffff88808fed4dc0 R15: dffffc0000000000 [ 79.669894][ T9008] FS: 00007ff1cd893700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.679247][ T9008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.685909][ T9008] CR2: 00000000004cc870 CR3: 000000009910b000 CR4: 00000000001406e0 [ 79.693936][ T9008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.702040][ T9008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.710098][ T9008] Kernel panic - not syncing: Fatal exception [ 79.716904][ T9008] Kernel Offset: disabled [ 79.721248][ T9008] Rebooting in 86400 seconds..