Squid workers segfault occasionally - v3.2.0.13

Hi,

I'm getting occasionally Squid segfaults (from the worker I think) with
version 3.2.0.13. During busy periods these can be several times an
hour, at other times it could be once or twice a day.

What is the best way of tracing the problem? Should I increase the
logging verbosity and see if I can get some useful information?

I have copied the logs that I am seeing in the system log below, but
appreciate that these may not be of much help:

Nov 3 18:28:37 nelsonwr kernel: [39335.587192] squid3[15190]: segfault at 0 ip 000000000055f9b0 sp 00007fffc5674ed0 error 4 in squid[400000+3be000]
Nov 3 19:50:42 nelsonwr kernel: [44260.802547] squid3[17752]: segfault at 0 ip 000000000055f9b0 sp 00007fff1145b1e0 error 4 in squid[400000+3be000]
Nov 3 20:07:37 nelsonwr kernel: [45275.771624] squid3[21493]: segfault at 0 ip 000000000055f9b0 sp 00007fffd8413160 error 4 in squid[400000+3be000]
Nov 3 20:34:08 nelsonwr kernel: [46867.276259] squid3[22728]: segfault at 0 ip 000000000055f9b0 sp 00007fff7bdecab0 error 4 in squid[400000+3be000]
Nov 3 20:39:34 nelsonwr kernel: [47192.724355] squid3[24602]: segfault at 0 ip 000000000055f9b0 sp 00007fff275dff30 error 4 in squid[400000+3be000]
Nov 3 20:45:04 nelsonwr kernel: [47522.764948] squid3[24977]: segfault at 0 ip 000000000055f9b0 sp 00007fff503f74b0 error 4 in squid[400000+3be000]

I am seeing the following in cache.log at the same time:

2011/11/03 20:39:37 kid1| Starting Squid Cache version 3.2.0.13 for x86_64-pc-linux-gnu...
2011/11/03 20:39:37 kid1| Process ID 24977
2011/11/03 20:39:37 kid1| Process Roles: worker
2011/11/03 20:39:37 kid1| With 65535 file descriptors available
2011/11/03 20:39:37 kid1| Initializing IP Cache...
2011/11/03 20:39:37 kid1| DNS Socket created at 0.0.0.0, FD 7
2011/11/03 20:39:37 kid1| Adding nameserver 89.145.254.78 from /etc/resolv.conf
2011/11/03 20:39:37 kid1| Adding nameserver 94.30.127.100 from /etc/resolv.conf
2011/11/03 20:39:37 kid1| Adding domain wardroom from /etc/resolv.conf
2011/11/03 20:39:37 kid1| helperOpenServers: Starting 5/5 'ext_session_acl' processes
2011/11/03 20:39:37 kid1| Logfile: opening log daemon:/var/log/squid3/access.log
2011/11/03 20:39:37 kid1| Logfile Daemon: opening log /var/log/squid3/access.log
2011/11/03 20:39:37 kid1| Unlinkd pipe opened on FD 23
2011/11/03 20:39:37 kid1| Local cache digest enabled; rebuild/rewrite every 3600/3600 sec
2011/11/03 20:39:37 kid1| Store logging disabled
2011/11/03 20:39:37 kid1| Swap maxSize 0 + 262144 KB, estimated 20164 objects
2011/11/03 20:39:37 kid1| Target number of buckets: 1008
2011/11/03 20:39:37 kid1| Using 8192 Store buckets
2011/11/03 20:39:37 kid1| Max Mem size: 262144 KB
2011/11/03 20:39:37 kid1| Max Swap size: 0 KB
2011/11/03 20:39:37 kid1| Using Least Load store dir selection
2011/11/03 20:39:37 kid1| Set Current Directory to /var/spool/squid3

OS is Debian Squeeze.

Thanks for any help,

Andy
Received on Sun Nov 06 2011 - 00:10:47 MDT