[Pdns-users] SIGSEGV after some AXFR queries
bert hubert
bert.hubert at netherlabs.nl
Mon Jun 29 13:23:09 UTC 2009
Marek,
Indeed - both 2.9.21 and 2.9.22 contain important updates to the TCP
component of PowerDNS. So please consider upgrading, or follow
Kenneth's excellent suggestion.
Kind regards,
Bert Hubert
On Mon, Jun 29, 2009 at 3:17 PM, Kenneth Marshall<ktm at rice.edu> wrote:
> Marek,
>
> Version 2.9.20 is pretty old, so maybe this problem is fixed in
> a later release. I know that I have seen this sort of problem when
> bad data was in the database. Maybe you could try validating the
> data for the zone that is being requested by the AXFR? Just a
> thought.
>
> Regards,
> Ken
>
> On Mon, Jun 29, 2009 at 02:12:34PM +0100, Marek Kroemeke wrote:
>> Hi there,
>>
>> We are having some very odd crashes (SIGSEGV) on one of our servers - we
>> found in logs that each crash always happens 1-2 seconds after there are
>> AXFR requests from one particular DNS server (I doubt that it's a
>> coincidence).
>>
>> --
>> OS: Linux, Debian Etch
>> Kernel: 2.6.18-6-686
>> Powerdns-server: 2.9.20-8+etch1
>> --
>>
>> Did anyone notice similar crashes ?
>>
>> Thanks,
>>
>> Marek Kroemeke
>>
>> ----- cut -----
>> Jun 28 07:07:14 pdns[3078]: Got a signal 11, attempting to print trace:
>> Jun 28 07:07:14 pdns[3078]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 07:07:14 pdns[3078]: [0xb7f74420]
>> Jun 28 07:07:14 pdns[3078]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 07:07:14 pdns[3078]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 07:07:14 pdns[3078]: /lib/tls/i686/cmov/libpthread.so.0 [0xb7e2f240]
>> Jun 28 07:07:14 pdns[3078]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dc449e]
>> Jun 28 07:07:15 pdns[31421]: Our pdns instance (3078) exited after signal 6
>> Jun 28 07:07:15 pdns[31421]: Respawning
>> Jun 28 07:07:16 pdns[10651]: Guardian is launching an instance
>> --
>> Jun 28 13:42:48 pdns[10651]: Got a signal 11, attempting to print trace:
>> Jun 28 13:42:48 pdns[10651]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 13:42:48 pdns[10651]: [0xb7f77420]
>> Jun 28 13:42:48 pdns[10651]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 13:42:48 pdns[10651]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 13:42:48 pdns[10651]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e32240]
>> Jun 28 13:42:48 pdns[10651]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dc749e]
>> Jun 28 13:42:49 pdns[31421]: Our pdns instance (10651) exited after
>> signal 6
>> Jun 28 13:42:49 pdns[31421]: Respawning
>> Jun 28 13:42:50 pdns[20919]: Guardian is launching an instance
>> --
>> Jun 28 14:24:05 pdns[20919]: Got a signal 11, attempting to print trace:
>> Jun 28 14:24:05 pdns[20919]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 14:24:05 pdns[20919]: [0xb7f2d420]
>> Jun 28 14:24:05 pdns[20919]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 14:24:05 pdns[20919]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 14:24:05 pdns[20919]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7de8240]
>> Jun 28 14:24:05 pdns[20919]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7d7d49e]
>> Jun 28 14:24:05 pdns[31421]: Our pdns instance (20919) exited after
>> signal 6
>> Jun 28 14:24:05 pdns[31421]: Respawning
>> Jun 28 14:24:06 pdns[25298]: Guardian is launching an instance
>> --
>> Jun 28 16:26:10 pdns[25298]: Got a signal 11, attempting to print trace:
>> Jun 28 16:26:10 pdns[25298]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 16:26:10 pdns[25298]: [0xb7f81420]
>> Jun 28 16:26:11 pdns[25298]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 16:26:11 pdns[25298]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 16:26:11 pdns[25298]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e3c240]
>> Jun 28 16:26:11 pdns[25298]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dd149e]
>> Jun 28 16:26:11 pdns[31421]: Our pdns instance (25298) exited after
>> signal 6
>> Jun 28 16:26:11 pdns[31421]: Respawning
>> Jun 28 16:26:12 pdns[6046]: Guardian is launching an instance
>> --
>> Jun 28 16:41:10 pdns[6046]: Got a signal 11, attempting to print trace:
>> Jun 28 16:41:10 pdns[6046]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 16:41:10 pdns[6046]: [0xb7f3f420]
>> Jun 28 16:41:10 pdns[6046]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 16:41:10 pdns[6046]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 16:41:10 pdns[6046]: AXFR of domain 'thedisabilitychallenge.com'
>> initiated by 69.41.170.223
>> Jun 28 16:41:10 pdns[6046]: /lib/tls/i686/cmov/libpthread.so.0 [0xb7dfa240]
>> Jun 28 16:41:10 pdns[6046]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7d8f49e]
>> Jun 28 16:41:10 pdns[31421]: Our pdns instance (6046) exited after signal 6
>> Jun 28 16:41:10 pdns[31421]: Respawning
>> --
>> Jun 28 16:45:09 pdns[7682]: Got a signal 11, attempting to print trace:
>> Jun 28 16:45:09 pdns[7682]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 16:45:09 pdns[7682]: [0xb7f6b420]
>> Jun 28 16:45:10 pdns[7682]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 16:45:10 pdns[7682]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 16:45:10 pdns[7682]: /lib/tls/i686/cmov/libpthread.so.0 [0xb7e26240]
>> Jun 28 16:45:10 pdns[7682]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dbb49e]
>> Jun 28 16:45:10 pdns[31421]: Our pdns instance (7682) exited after signal 6
>> Jun 28 16:45:10 pdns[31421]: Respawning
>> Jun 28 16:45:10 pdns[8301]: Guardian is launching an instance
>> --
>> Jun 28 22:33:00 pdns[8301]: Got a signal 11, attempting to print trace:
>> Jun 28 22:33:00 pdns[8301]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 22:33:00 pdns[8301]: [0xb7fde420]
>> Jun 28 22:33:00 pdns[8301]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 22:33:00 pdns[8301]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 22:33:00 pdns[8301]: /lib/tls/i686/cmov/libpthread.so.0 [0xb7e99240]
>> Jun 28 22:33:00 pdns[8301]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7e2e49e]
>> Jun 28 22:33:00 pdns[31421]: Our pdns instance (8301) exited after signal 6
>> Jun 28 22:33:00 pdns[31421]: Respawning
>> Jun 28 22:33:01 pdns[15035]: Guardian is launching an instance
>> --
>> Jun 28 22:55:49 pdns[15035]: Got a signal 11, attempting to print trace:
>> Jun 28 22:55:49 pdns[15035]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 28 22:55:49 pdns[15035]: [0xb7f6b420]
>> Jun 28 22:55:49 pdns[15035]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 28 22:55:49 pdns[15035]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 28 22:55:49 pdns[15035]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e26240]
>> Jun 28 22:55:49 pdns[15035]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dbb49e]
>> Jun 28 22:55:49 pdns[31421]: Our pdns instance (15035) exited after
>> signal 6
>> Jun 28 22:55:49 pdns[31421]: Respawning
>> Jun 28 22:55:50 pdns[17623]: Guardian is launching an instance
>> --
>> Jun 29 00:01:52 pdns[17623]: Got a signal 11, attempting to print trace:
>> Jun 29 00:01:52 pdns[17623]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 00:01:52 pdns[17623]: [0xb7f88420]
>> Jun 29 00:01:52 pdns[17623]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 00:01:52 pdns[17623]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 00:01:52 pdns[17623]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e43240]
>> Jun 29 00:01:53 pdns[17623]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dd849e]
>> Jun 29 00:01:53 pdns[31421]: Our pdns instance (17623) exited after
>> signal 6
>> Jun 29 00:01:53 pdns[31421]: Respawning
>> Jun 29 00:01:53 pdns[25601]: Guardian is launching an instance
>> --
>> Jun 29 00:44:03 pdns[25601]: Got a signal 11, attempting to print trace:
>> Jun 29 00:44:03 pdns[25601]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 00:44:03 pdns[25601]: [0xb7f52420]
>> Jun 29 00:44:03 pdns[25601]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 00:44:03 pdns[25601]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 00:44:03 pdns[25601]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e0d240]
>> Jun 29 00:44:03 pdns[25601]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7da249e]
>> Jun 29 00:44:03 pdns[31421]: Our pdns instance (25601) exited after
>> signal 6
>> Jun 29 00:44:03 pdns[31421]: Respawning
>> Jun 29 00:44:04 pdns[29822]: Guardian is launching an instance
>> --
>> Jun 29 00:45:08 pdns[29822]: Got a signal 11, attempting to print trace:
>> Jun 29 00:45:08 pdns[29822]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 00:45:08 pdns[29822]: [0xb7f31420]
>> Jun 29 00:45:08 pdns[29822]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 00:45:08 pdns[29822]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 00:45:08 pdns[29822]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7dec240]
>> Jun 29 00:45:08 pdns[29822]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7d8149e]
>> Jun 29 02:32:45 pdns[6566]: Guardian is launching an instance
>> --
>> Jun 29 04:53:34 pdns[6566]: Got a signal 11, attempting to print trace:
>> Jun 29 04:53:34 pdns[6566]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 04:53:34 pdns[6566]: [0xb7f6f420]
>> Jun 29 04:53:34 pdns[6566]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 04:53:35 pdns[6566]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 04:53:35 pdns[6566]: /lib/tls/i686/cmov/libpthread.so.0 [0xb7e2a240]
>> Jun 29 04:53:35 pdns[6566]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dbf49e]
>> --
>> Jun 29 05:37:34 pdns[20512]: Got a signal 11, attempting to print trace:
>> Jun 29 05:37:35 pdns[20512]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 05:37:35 pdns[20512]: [0xb7f77420]
>> Jun 29 05:37:35 pdns[20512]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 05:37:35 pdns[20512]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 05:37:35 pdns[20512]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e32240]
>> Jun 29 05:37:35 pdns[20512]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7dc749e]
>> Jun 29 05:37:35 pdns[6564]: Our pdns instance (20512) exited after signal 6
>> Jun 29 05:37:35 pdns[6564]: Respawning
>> Jun 29 05:37:36 pdns[24881]: Guardian is launching an instance
>>
>> Jun 29 07:33:00 pdns[24881]: Got a signal 11, attempting to print trace:
>> Jun 29 07:33:00 pdns[24881]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 07:33:00 pdns[24881]: [0xb7f0a420]
>> Jun 29 07:33:00 pdns[24881]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 07:33:00 pdns[24881]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 07:33:00 pdns[24881]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7dc5240]
>> Jun 29 07:33:00 pdns[24881]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7d5a49e]
>> Jun 29 07:33:00 pdns[6564]: Our pdns instance (24881) exited after signal 6
>> Jun 29 07:33:00 pdns[6564]: Respawning
>> Jun 29 07:33:01 pdns[5184]: Guardian is launching an instance
>> --
>> Jun 29 11:23:19 pdns[5184]: Got a signal 11, attempting to print trace:
>> Jun 29 11:23:19 pdns[5184]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 11:23:19 pdns[5184]: [0xb7f28420]
>> Jun 29 11:23:19 pdns[5184]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 11:23:19 pdns[5184]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 11:23:19 pdns[5184]: /lib/tls/i686/cmov/libpthread.so.0 [0xb7de3240]
>> Jun 29 11:23:19 pdns[5184]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7d7849e]
>> Jun 29 11:23:20 pdns[6564]: Our pdns instance (5184) exited after signal 6
>> Jun 29 11:23:20 pdns[6564]: Respawning
>> Jun 29 11:23:21 pdns[28770]: Guardian is launching an instance
>> --
>> Jun 29 13:39:12 pdns[28770]: Got a signal 11, attempting to print trace:
>> Jun 29 13:39:12 pdns[28770]: /usr/sbin/pdns_server-instance [0x80b76ba]
>> Jun 29 13:39:12 pdns[28770]: [0xb7fc8420]
>> Jun 29 13:39:12 pdns[28770]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver6doAXFRERKSsP9DNSPacketi+0x3ef)
>> [0x80923cf]
>> Jun 29 13:39:12 pdns[28770]:
>> /usr/sbin/pdns_server-instance(_ZN13TCPNameserver12doConnectionEPv+0xede)
>> [0x8094c9e]
>> Jun 29 13:39:12 pdns[28770]: /lib/tls/i686/cmov/libpthread.so.0
>> [0xb7e83240]
>> Jun 29 13:39:12 pdns[28770]: /lib/tls/i686/cmov/libc.so.6(__clone+0x5e)
>> [0xb7e1849e]
>> Jun 29 13:39:13 pdns[6564]: Our pdns instance (28770) exited after signal 6
>> Jun 29 13:39:13 pdns[6564]: Respawning
>> Jun 29 13:39:14 pdns[11116]: Guardian is launching an instance
>> ----- cut -----
>>
>> --
>> All postal correspondence to: Positive House, 24 Broadway, London. W13 0SU
>>
>> The Positive Internet Company Limited is registered in England and Wales.
>> Registered company number: 3673639. VAT no: 726 7072 28.
>> Registered office: Northside House, Mount Pleasant, Barnet, Herts, EN4 9EE.
>> _______________________________________________
>> Pdns-users mailing list
>> Pdns-users at mailman.powerdns.com
>> http://mailman.powerdns.com/mailman/listinfo/pdns-users
>>
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