[Pdns-users] PowerDNS Segfault - Debian

[bert hubert]

> We are trying to use pdns as a replacement for bind9 - we are using the
> bind (2) backend and just over 57,000 records.  We find that pdns will
> segfault randomly on us generally after rediscover command.  Any help in
> diagnosing and resolving this problem would be greatly appreciated.

Hi,

Thanks for the very good bug report, I'll try to sort this out quickly.

Using your information I think I already know where the problem is.

Thanks!

> Jul 17 10:17:53 dns01 pdns[19288]: Got a signal 11, attempting to print
> trace:
> Jul 17 10:17:53 dns01 pdns[19288]: /usr/sbin/pdns_server-instance
> [0x80a495a] Jul 17 10:17:53 dns01 pdns[19288]: [0xffffe420] Jul 17
> 10:17:53 dns01
> pdns[19288]:
> /usr/sbin/pdns_server-instance(_ZN12Bind2Backend17getUpdatedMastersEPSt6
> vectorI10DomainInfoSaIS1_EE+0x67)
> [0x80ce0f7]
> Jul 17 10:17:53 dns01
> pdns[19288]:
> /usr/sbin/pdns_server-instance(_ZN12UeberBackend17getUpdatedMastersEPSt6
> vectorI10DomainInfoSaIS1_EE+0x33)
> [0x80a9d13]
> Jul 17 10:17:53 dns01
> pdns[19288]:
> /usr/sbin/pdns_server-instance(_ZN17CommunicatorClass17masterUpdateCheck
> EP13PacketHandler+0xa7)
> [0x80b7717]
> Jul 17 10:17:53 dns01
> pdns[19288]:
> /usr/sbin/pdns_server-instance(_ZN17CommunicatorClass8mainloopEv+0x11d)
> [0x80bb90d]
> Jul 17 10:17:53 dns01
> pdns[19288]:
> /usr/sbin/pdns_server-instance(_ZN17CommunicatorClass12launchhelperEPv+0
> x11)
> [0x80c9661]
> Jul 17 10:17:53 dns01 pdns[19288]: /lib/tls/libpthread.so.0 [0x4014dced]
> Jul 17 10:17:53 dns01 pdns[19288]: /lib/tls/libc.so.6(__clone+0x5e)
> [0x4022bdee] Jul 17 10:17:54 dns01 pdns[19286]: Our pdns instance
> (19288) exited after signal 6 Jul 17 10:17:54 dns01 pdns[19286]:
> Respawning Jul 17 10:17:55 dns01 pdns[19427]: Guardian is launching an
> instance Jul 17 10:17:55 dns01 pdns[19427]: This is a guarded instance
> of pdns Jul 17 10:17:55 dns01 pdns[19427]: UDP server bound to
> 10.5.23.50:53 Jul 17 10:17:55 dns01 pdns[19427]: TCP server bound to
> authoritative:53 Jul 17 10:17:55 dns01 pdns[19427]: PowerDNS 2.9.20 (C)
> 2001-2006 PowerDNS.COM BV (May 11 2006, 19:40:40, gcc 4.0.4 20060422
> (prerelease) (Debian 4.0.3-2)) starting up
> Jul 17 10:19:25 dns01 pdns[19427]: Fatal error in control listener:
> Guardian exited - going down as well
> 
> -- 
> Ian Samuel, B.Sc.
> Sr. Linux Administrator
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