[Pdns-users] SIGSEGV after some AXFR queries

Marek Kroemeke marek at positive-internet.com
Mon Jun 29 13:12:34 UTC 2009


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 -----

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