[SR-Users] problem unreferencing dialog in dialog module
Daniel-Constantin Mierla
miconda at gmail.com
Wed Mar 2 18:45:33 CET 2011
Hello,
looks like related to the callbacks for dialog module. Are you loading
other modules that require dialog module?
Checking the time staps from the acc and the crash log, the BYE for the
dialog was before the crash but the To-tag is not printed from
dlg_hash.c, although it is in the acc for INVITE and BYE. Do you have
parallel forking in front of this SIP server? I mean, is there another
proxy that can do parallel forking then send two or more branches to
this instance?
I will dig in more to see what went wrong there.
Thanks,
Daniel
On 3/2/11 4:34 PM, Anton Roman wrote:
> Hi all,
>
> we are running Kamailio 3.1.2 in a production environment, using the
> dialog module, and it crashed two hours ago.
>
>
> Here you have the logs we got (addtional log fragments with the acc
> records involved in this call are appended at the end of the mail):
>
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28927]: CRITICAL:
> dialog [dlg_hash.c:599]: bogus ref -1 with cnt 1 for dlg
> 0x7f23f472db30 [2490:1070436595] with clid
> 'e0a20cb844d211e0acd8001422093865@<CLIENT IP>' and tags
> '1577886432-3759264324-335599788-1698171170' ''
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28927]: : <core>
> [mem/q_malloc.c:446]: BUG: qm_free: freeing already freed pointer,
> first free: dialog: dlg_cb.c: destroy_dlg_callbacks_list(80) - aborting
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28896]: ALERT:
> <core> [main.c:741]: child process 28927 exited by a signal 6
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28896]: ALERT:
> <core> [main.c:744]: core was not generated
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28896]: INFO:
> <core> [main.c:756]: INFO: terminating due to SIGCHLD
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28948]: INFO:
> <core> [main.c:807]: INFO: signal 15 received
> Mar 2 14:43:05 kamailio2 /usr/local/sbin/kamailio[28942]: INFO:
> <core> [main.c:807]: INFO: signal 15 received
>
> We get the kamailio code from git last week:
>
> sercmd> core.info <http://core.info/>
> {
> version: kamailio 3.1.2
> id: 4ace86
> compiler: gcc 4.3.2
> compiled: 09:12:36 Feb 23 2011
> flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS,
> USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM,
> SHM_MMAP, PKG_MALLOC, DBG_QM_MALLOC, USE_FUTEX,
> FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR,
> USE_DST_BLACKLIST, HAVE_RESOLV_RES
> }
>
> The problem looks like this other one already fixed:
> http://lists.sip-router.org/pipermail/sr-users/2009-November/027351.html
>
> We set the Kamailio to debug level in case it happens again.
>
> On the other side, I need to know why the core is not been generated.
> I have already checked the points mentioned in
> http://www.kamailio.org/dokuwiki/doku.php/troubleshooting:corefiles
>
> 1. disable_core_dump is not set in the config file.
>
> 2. From /etc/default/kamailio:
> ...
> DUMP_CORE=yes
> ...
>
> 2. From /etc/init.d/kamailio:
> ...
> if test "$DUMP_CORE" = "yes" ; then
> # set proper ulimit
> ulimit -c unlimited
>
> # directory for the core dump files
> COREDIR=/home/corefiles
> [ -d $COREDIR ] || mkdir $COREDIR
> chmod 777 $COREDIR
> echo "$COREDIR/core.%e.sig%s.%p" > /proc/sys/kernel/core_pattern
> fi
> ...
>
> 4. Writting permissions of $COREDIR
>
> ls -hall /home
> ...
> drwxrwxrwx 2 root root 4.0K 2010-12-21 09:15 corefiles
> ...
>
> What else should I check?
>
> Thanks in advance,
> regards
>
> Antón
>
>
> *Acc records related to the dialog whose destruction causes the problem:*
>
> Mar 2 14:42:44 kamailio2 /usr/local/sbin/kamailio[28902]: NOTICE: acc
> [acc.c:275]: ACC: transaction answered:
> timestamp=1299073364;method=INVITE;from_tag=1577886432-3759264324-335599788-1698171170;to_tag=5FFAEA34-6A;call_id=e0a20cb844d211e0acd8001422093865@<client
> IP>;code=200;reason=OK;src_user=<caller number>;src_domain=<client
> IP>;dst_ouser=<called number>;dst_user=<called
> number>;dst_domain=10.90.1.251;src_ip=<client IP>
>
> ...
>
> Mar 2 14:42:44 kamailio2 /usr/local/sbin/kamailio[28920]: NOTICE: acc
> [acc.c:275]: ACC: request acknowledged:
> timestamp=1299073364;method=ACK;from_tag=1577886432-3759264324-335599788-1698171170;to_tag=5FFAEA34-6A;call_id=e0a20cb844d211e0acd8001422093865@<client
> IP>;code=200;reason=OK;src_user=<caller number>;src_domain=<client
> IP>;dst_ouser=<called number>;dst_user=<called
> number>;dst_domain=10.90.1.251;src_ip=<client IP>
> ...
>
>
> Mar 2 14:43:00 kamailio2 /usr/local/sbin/kamailio[28903]: ERROR:
> <script>: ACK WITHOUT MATCHING TRANSACTION in
> e0a20cb844d211e0acd8001422093865@<client IP> call... ignore and discard.
>
> ...
>
> Mar 2 14:43:00 kamailio2 /usr/local/sbin/kamailio[28904]: NOTICE: acc
> [acc.c:275]: ACC: transaction answered:
> timestamp=1299073380;method=BYE;from_tag=1577886432-3759264324-335599788-1698171170;to_tag=5FFAEA34-6A;call_id=e0a20cb844d211e0acd8001422093865@<client
> IP>;code=200;reason=OK;src_user=<caller number>;src_domain=<client
> IP>;dst_ouser=<called number>;dst_user=<called
> number>;dst_domain=10.90.1.251;src_ip=<client IP>
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
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--
Daniel-Constantin Mierla
http://www.asipto.com
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