Re: [squid-users] 2.3.S5 - Segmentation faults and 'dlmalloc' question

First verify that the problem isn't fixed already. The current version
is 2.4.STABLE2.

If you can reproduce the problem, please get a stacktrace and then file
a bugreport in our Bugzilla database with much the same information as
you provided below plus the mentioned stacktrace.

http://www.squid-cache.org/Doc/FAQ/FAQ-11.html#ss11.19
http://www.squid-cache.org/bugs/

Note: dlmalloc is not required on any current Linux using GNU libc 2.x,
but your testing has already ruled out dlmalloc.

Regards
Henrik Nordström
Squid Hacker
MARA Systems AB, Sweden

Torsten.Lange@GECITS-EU.COM wrote:
>
> hi there,
>
> is there any other possible reason for segmentation faults
> with squid 2.3.stable5 than the known ones (gcc -O2) ?
> i have compiled it using gcc 2.95.3 without the '-O' flags, but
> squid seems to insist on quick segfault nearly each time i
> use 'squid -k reconfigure'.
> +++
> the machine is a p3 866 (dual board, 1 cpu)
> suse 7.2
> kernel 2.4.13 smp
> 1 gb ram
> 2x 18gb uscsi3 disks
>
> squid 2.3.stable5 (built from daily tarball 2001/10/29)
>
> my compile options:
>
> --enable-snmp \
> --enable-cache-digests \
> --disable-ident-lookups \
> --enable-gnuregex \
> --enable-time-hack \
> --enable-dlmalloc
>
> i have also tried building squid without dlmalloc and time-hack
> but it wouldn't spare me from the segfaults.
>
> i have also tried downloading a newer version of 'dlmalloc.c'
> (v2.7.0) and putting it into the 'lib' directory of squid's source tree.
> i have also placed the corresponding 'malloc.h' in the 'include'
> directory - it compiles fine and everything works ok - except from
> the sporadic segfaults.
>
> the error msg in cache.log is:
>
> FATAL: Received Segment Violation...dying.
> 2001/10/30 12:09:58| storeDirWriteCleanLogs: Starting...
> 2001/10/30 12:09:59| WARNING: Closing open FD 9
> 2001/10/30 12:09:59| Finished. Wrote 65464 entries.
> 2001/10/30 12:09:59| Took 0.3 seconds (192720.3 entries/sec).
> CPU Usage: 3901.260 seconds = 1460.060 user + 2441.200 sys
> Maximum Resident Size: 0 KB
> Page faults with physical i/o: 362
> Memory usage for squid via mallinfo():
> total space in arena: 180415 KB
> Ordinary blocks: 166703 KB 5923 blks
> Small blocks: 0 KB 0 blks
> Holding blocks: 824 KB 2 blks
> Free Small blocks: 0 KB
> Free Ordinary blocks: 13711 KB
> Total in use: 167527 KB 93%
> Total free: 13711 KB 8%
> 2001/10/30 12:10:10| Starting Squid Cache version 2.3.STABLE5 for i686-pc-linux
>
> any ideas?
>
> ps: perhaps s.o. can help me out doing a debug trace, i never
> did that before.
Received on Tue Oct 30 2001 - 07:01:14 MST