[SR-Users] DMQ broadcasting crashes kamailio

[Daniel-Constantin Mierla]

Hello,

have you tried the suggestion from Charles in the other response? It can
help figuring out where the problem resides.

Now, from C point of view, I would need the following output from gdb of
the core file:

frame 0
p *reason

frame 1
p *worker
p *current_job

I would also need to know the modparams for dmq and other dmq_* module,
plus the list if modules for which you enabled dmq (eg, htable, dialog,
presence, ...).

Cheers,
Daniel

On 24.04.20 18:10, SamyGo wrote:
> Oops,apologize, missed that:
>
> version: kamailio 5.3.3 (x86_64/linux) 44ccb9-dirty
> flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC,
> F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX,
> FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR,
> USE_DST_BLACKLIST, HAVE_RESOLV_RES
> ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE
> 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
> id: 44ccb9 -dirty
> compiled on 17:04:55 Apr 17 2020 with gcc 4.9.2
>
> Tried this with version 5.0, 5.2, and now 5.3 same situation.. 
>
> Thankyou for looking into this,
> Sammy
>
> On Fri, Apr 24, 2020 at 2:33 AM Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>     Hello,
>
>     you have to provide the version of kamailio for each reported
>     kamailio issue, otherwise is hard to match with the source code.
>     Use 'kamailio -v' to get version details.
>
>     Cheers,
>     Daniel
>
>     On 23.04.20 23:36, SamyGo wrote:
>>     Hi,
>>
>>     Is there a way to broadcast KDMQ to the cluster but not expect a
>>     reply back !?as far as I've read the source code
>>     dmq_bcast_message is exactly like dmq_send_message in a way that
>>     it expects a callback to be executed on response i.e expects a reply.
>>
>>     So, the situation I'm facing is I'm broadcasting message to
>>     cluster and I do not want a reply back. The following two options
>>     result in crash & core dump.
>>
>>     1 - If my script doesn't respond back, by use of
>>     dmq_handle_message, it marks the destined servers as "inactive"
>>     and stops usrloc sync process which isn't desirable.
>>     2 - If I respond back with the dmq_handle_message it crashes the
>>     Kamailio which just received this broadcasted message.
>>
>>     Here is how its done in script:
>>
>>     *broadcasting message to cluster:*
>>             dmq_bcast_message("userOnline", "$fu", "text/plain");
>>
>>     *Receiving and handling a broadcast message:*
>>     route[DMQ_HANDLE] {
>>         if(!(is_method("KDMQ") || $rm == "KDMQ")) return;
>>        
>>         if(is_method("KDMQ") || $rm == "KDMQ"){
>>                 if($rU =~ "userOnline"){
>>                         //user came online in cluster, resume
>>     transactions if-any suspended
>>                         $avp(remoteUser) = $rb;    
>>                 }
>>                 dmq_handle_message();
>>                 exit;
>>         }
>>     }
>>
>>     *Related log lines:*
>>     Apr 23 21:15:48  kamailio[916]: ALERT: <script>: [da2c1-2f499]
>>     ------ DMQ_HANDLE: UserOnline Event Received ------
>>     Apr 23 21:15:48  kamailio[916]: DEBUG: dmq [message.c:53]:
>>     ki_dmq_handle_message_rc(): dmq_handle_message [KDMQ
>>     sip:userOnline at 9.8.7.123:5060 <http://sip:userOnline@9.8.7.123:5060>]
>>     Apr 23 21:15:48  kamailio[916]: DEBUG: dmq [message.c:66]:
>>     ki_dmq_handle_message_rc(): dmq_handle_message peer found: userOnline
>>     Apr 23 21:15:48  kamailio[916]: DEBUG: <core>
>>     [core/receive.c:437]: receive_msg(): request-route executed in:
>>     401461 usec
>>     Apr 23 21:15:48  kamailio[935]: DEBUG: dmq [worker.c:87]:
>>     worker_loop(): dmq_worker [2 935] lock acquired
>>     and crash/segfault..
>>
>>     Core dump: https://pastebin.com/S7ekCPfF
>>
>>     Any help or pointers to solve this would be really appreciated.
>>
>>     Best Regards,
>>     Sammy
>>
>>     _______________________________________________
>>     Kamailio (SER) - Users Mailing List
>>     sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>     -- 
>     Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>     www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda

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