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albright
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PostPosted: Sun Jul 13, 2014 11:32 pm    Post subject: defunct process prevents service restart Reply with quote

So ... on a remote machine this was logged:

Code:
Jul 13 10:23:18 olorin kernel: general protection fault: 0000 [#1] PREEMPT SMP
Jul 13 10:23:18 olorin kernel: Modules linked in: xt_REDIRECT xt_statistic xt_CT xt_LOG xt_connlimit xt_realm xt_comment xt_recent xt_nat ipt_ULOG ipt_REJECT ipt_MASQUERADE ipt_ECN ipt_CLUSTERIP ipt_ah nf_conntrack_proto_sctp nf_conntrack_netbios_ns nf_conntrack_broadcast xt_TPROXY xt_time xt_TCPMSS xt_tcpmss xt_sctp xt_policy xt_pkttype xt_owner xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_mark xt_mac xt_limit xt_length xt_iprange xt_helper xt_hashlimit xt_dscp xt_dccp xt_conntrack xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_raw iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink iptable_filter ip_tables x_tables w83627ehf hwmon_vid af_packet usbhid snd_hda_codec_realtek snd_hda_codec_generic nvidia(PO) snd_hda_intel ehci_pci snd_hda_codec ehci_hcd e1000e xhci_hcd x86_pkg_temp_thermal snd_pcm coretemp usbcore r8169 snd_timer ptp usb_common pps_core mii thermal fan acpi_cpufreq processor unix
Jul 13 10:23:18 olorin kernel: CPU: 0 PID: 16050 Comm: http-replicator Tainted: P           O 3.14.4-gentoo #1
Jul 13 10:23:18 olorin kernel: Hardware name: System manufacturer System Product Name/P8P67 REV 3.1, BIOS 3602 11/01/2012
Jul 13 10:23:18 olorin kernel: task: ffff880408140e20 ti: ffff8803f97a0000 task.ti: ffff8803f97a0000
Jul 13 10:23:18 olorin kernel: RIP: 0010:[<ffffffff813711c8>]  [<ffffffff813711c8>] skb_clone+0x18/0xc0
Jul 13 10:23:18 olorin kernel: RSP: 0018:ffff8803f97a1bb8  EFLAGS: 00010296
Jul 13 10:23:18 olorin kernel: RAX: 00000000000006c0 RBX: ffff8803fff48380 RCX: 00000000000000d0
Jul 13 10:23:18 olorin kernel: RDX: ffff880409ffd800 RSI: 00000000000000d0 RDI: ffff8803fff48380
Jul 13 10:23:18 olorin kernel: RBP: 00000000000000d0 R08: 0000000000000009 R09: 000000000000ffcb
Jul 13 10:23:18 olorin kernel: R10: 00000000d867ca12 R11: 0000000000000004 R12: ffff8803fff48380
Jul 13 10:23:18 olorin kernel: R13: ffff880372320680 R14: 0000000000000000 R15: 00000000000000d0
Jul 13 10:23:18 olorin kernel: FS:  00007f3d63387700(0000) GS:ffff88041ec00000(0000) knlGS:0000000000000000
Jul 13 10:23:18 olorin kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 13 10:23:18 olorin kernel: CR2: 00007f22af8a8328 CR3: 00000001fa73f000 CR4: 00000000000407f0
Jul 13 10:23:18 olorin kernel: Stack:
Jul 13 10:23:18 olorin kernel: ffffffff810fd640 ffff880372320680 ffff8803fff48380 ffffffff813c08da
Jul 13 10:23:18 olorin kernel: 0000000000000246 0000000100200013 00000003000052d0 ffffea0002eb5c00
Jul 13 10:23:18 olorin kernel: ffff8803721da1b0 ffff8803721da1c8 0000000000000af8 0000000000000000
Jul 13 10:23:18 olorin kernel: Call Trace:
Jul 13 10:23:18 olorin kernel: [<ffffffff810fd640>] ? __pollwait+0x110/0x110
Jul 13 10:23:18 olorin kernel: [<ffffffff813c08da>] ? tcp_transmit_skb+0x48a/0x850
Jul 13 10:23:18 olorin kernel: [<ffffffff813c16fe>] ? tcp_write_xmit+0x13e/0xaf0
Jul 13 10:23:18 olorin kernel: [<ffffffff813bffda>] ? tcp_current_mss+0x4a/0x70
Jul 13 10:23:18 olorin kernel: [<ffffffff813b47a0>] ? tcp_sendmsg+0xb70/0xcf0
Jul 13 10:23:18 olorin kernel: [<ffffffff810a9dbf>] ? find_lock_page+0x1f/0x80
Jul 13 10:23:18 olorin kernel: [<ffffffff81366a32>] ? sock_sendmsg+0x62/0x90
Jul 13 10:23:18 olorin kernel: [<ffffffff81366759>] ? sockfd_lookup_light+0x19/0x80
Jul 13 10:23:18 olorin kernel: [<ffffffff81369aeb>] ? SyS_sendto+0xfb/0x160
Jul 13 10:23:18 olorin kernel: [<ffffffff810ebcc9>] ? vfs_read+0x99/0x160
Jul 13 10:23:18 olorin kernel: [<ffffffff810ebf1f>] ? SyS_read+0x4f/0xc0
Jul 13 10:23:18 olorin kernel: [<ffffffff810eb1ed>] ? SyS_lseek+0x9d/0xb0
Jul 13 10:23:18 olorin kernel: [<ffffffff81406ae2>] ? system_call_fastpath+0x16/0x1b
Jul 13 10:23:18 olorin kernel: Code: c6 00 80 00 00 48 0f 44 c1 eb 9c 0f 1f 84 00 00 00 00 00 55 89 f5 53 48 89 fb 48 83 ec 08 8b 87 bc 00 00 00 48 8b 97 c0 00 00 00 <f6> 44 02 01 08 75 74 0f b6 43 7d 83 e0 18 3c 08 74 36 f6 83 9e
Jul 13 10:23:18 olorin kernel: RIP  [<ffffffff813711c8>] skb_clone+0x18/0xc0
Jul 13 10:23:18 olorin kernel: RSP <ffff8803f97a1bb8>
Jul 13 10:23:18 olorin kernel: ---[ end trace aba3009b12f799cd ]---
Jul 13 10:23:36 olorin kernel: conftest[27265]: segfault at 0 ip 00000000004005a0 sp 00007fffc9cde9d0 error 4 in conftest[400000+1000]
Jul 13 10:23:36 olorin kernel: conftest[27288]: segfault at 0 ip 0000003235520c16 sp 00007fff923bcab8 error 4 in libc-2.17.so[3235400000+1a0000]


now the http-replicator service is not working and will not restart; its process remains
in the tree as defunct

I would prefer not to reboot ...

Is that possible?
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eccerr0r
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PostPosted: Tue Jul 15, 2014 4:39 am    Post subject: Reply with quote

You may be SOL...

Is the parent of the dead task something other than init, can you kill/exit it and hope that reaps up the dead child task?

Can you run on a different port?

Most of the times it's time to reboot unfortunately.
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