Package: bind9
Version: 1:9.5.0.dfsg.P2-1
Severity: important

syslog.log
Sep 30 23:23:54 derek kernel: [791273.512364] named[2244]: segfault at dededef2 
ip b7eaad0e sp b7549f90 error 7 in libdns.so.43.0.1[b7e40000+141000]

I use bind9 running locally on my desktop box as the local recursive
resolver. Although this box has some unusual history (ran sid) as far as I can
ascertain it is running correct version of bind9 and libraries for
lenny. The bind9 config is relatively straight forward, and close to the
Debian default, with addition of some local authoritative zones.

Twice recently bind9 has stopped, dumping two core files in
/var/cache/bind. On both occasions problems were seen resolving some names
(reporting timeouts) immediately before the crash.

-rw------- 1 bind bind 58179584 2008-09-30 23:23 core.2243
-rw------- 1 bind bind 43302912 2008-09-22 19:58 core.2463

On one occasion I immediately ran "rndc dumpdb" when I encountered
issues with name resolution, and the crash took place a few seconds
after the database was written to /var/cache/bind/named_dump.db

-rw-r--r-- 1 bind bind    81933 2008-09-30 23:20 named_dump.db

Please advise if this information would be useful in diagnosing bind
issues.

If any libraries are the wrong version for lenny I will probably
reinstall. I couldn't see other reports of this issue, although there
are other reports of bind silently stopping, which could be related.

Running gdb -c /var/cache/named/core.NNNN gave;

 gdb -c /var/cache/bind/core.2243 
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
(no debugging symbols found)
Core was generated by `/usr/sbin/named -u bind'.
Program terminated with signal 11, Segmentation fault.
[New process 2244]
[New process 2247]
[New process 2246]
[New process 2245]
[New process 2243]
#0  0xb7eaad0e in ?? ()

gdb -c core.2463 
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
(no debugging symbols found)
Core was generated by `/usr/sbin/named -u bind'.
Program terminated with signal 11, Segmentation fault.
[New process 2464]
[New process 2467]
[New process 2466]
[New process 2465]
[New process 2463]
#0  0xb7e0b6d3 in ?? ()

daemon.log entries for most recent issue.

Sep 30 23:18:53 derek named[2243]: too many timeouts resolving
'www.l.google.com
/A' (in 'l.google.com'?): disabling EDNS
Sep 30 23:19:08 derek last message repeated 19 times
Sep 30 23:19:48 derek named[2243]: too many timeouts resolving
'NS7.NIC.uk/A' (i
n 'uk'?): disabling EDNS
Sep 30 23:20:07 derek last message repeated 27 times
Sep 30 23:20:42 derek named[2243]: received control channel command
'dumpdb'
Sep 30 23:20:42 derek named[2243]: dumpdb started
Sep 30 23:20:42 derek named[2243]: dumpdb complete
Sep 30 23:30:35 derek named[18257]: starting BIND 9.5.0-P2 -u bind

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages bind9 depends on:
ii  adduser               3.110              add and remove users and groups
ii  bind9utils            1:9.5.0.dfsg.P2-1  Utilities for BIND
ii  debconf [debconf-2.0] 1.5.22             Debian configuration management sy
ii  libbind9-40           1:9.5.0.dfsg.P2-1  BIND9 Shared Library used by BIND
ii  libc6                 2.7-13             GNU C Library: Shared libraries
ii  libcap2               2.11-2             support for getting/setting POSIX.
ii  libdb4.6              4.6.21-10          Berkeley v4.6 Database Libraries [
ii  libdns43              1:9.5.0.dfsg.P2-1  DNS Shared Library used by BIND
ii  libisc44              1:9.5.0.dfsg.P2-1  ISC Shared Library used by BIND
ii  libisccc40            1:9.5.0.dfsg.P2-1  Command Channel Library used by BI
ii  libisccfg40           1:9.5.0.dfsg.P2-1  Config File Handling Library used 
ii  libkrb53              1.6.dfsg.4~beta1-4 MIT Kerberos runtime libraries
ii  libldap-2.4-2         2.4.10-3           OpenLDAP libraries
ii  liblwres40            1:9.5.0.dfsg.P2-1  Lightweight Resolver Library used 
ii  libssl0.9.8           0.9.8g-13          SSL shared libraries
ii  libxml2               2.6.32.dfsg-4      GNOME XML library
ii  lsb-base              3.2-20             Linux Standard Base 3.2 init scrip
ii  netbase               4.34               Basic TCP/IP networking system

bind9 recommends no packages.

Versions of packages bind9 suggests:
pn  bind9-doc              <none>            (no description available)
ii  dnsutils               1:9.5.0.dfsg.P2-1 Clients provided with BIND
pn  resolvconf             <none>            (no description available)

-- debconf information:
  bind9/different-configuration-file:
  bind9/run-resolvconf: false
  bind9/start-as-user: bind



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