[OpenSIPS-Users] crash / coredump with dispatcher module

Samuel Muller sml at l33.fr
Tue Mar 13 18:34:17 CET 2012 

Yep, it's what I tried.

Actually, it's in a lab version, so I do several tests with 2 small servers.

The big picture is :

UA -> stateless proxies (with dispatcher) -> statefull+registrar proxy

Later, the dispatcher will be used to send Register requests to 2 different
registrar servers, and Invite requests to 2 different statefull proxies.

In this actual case, the dispatcher list file contains these lines :

1 sip:1.2.3.4:5060
2 sip:1.2.3.4:5060
3 sip:1.2.3.4:5060
4 sip:1.2.3.4:5060

In the opensips config :

modparam("dispatcher","list_file","/opt/opensips/etc/opensips/dispatcher.list")
modparam("dispatcher","use_default",1)
modparam("dispatcher","dst_avp","$avp(dp_dst)")
modparam("dispatcher","attrs_avp","$avp(dp_attrs)")
modparam("dispatcher","grp_avp","$avp(dp_grp)")
modparam("dispatcher","cnt_avp","$avp(dp_cnt)")
modparam("dispatcher","hash_pvar","$avp(dp_hash)")
modparam("dispatcher","setid_pvar","$avp(dp_setid)")
modparam("dispatcher","ds_ping_from","sip:sep1 at lab.toto.com")
modparam("dispatcher","ds_ping_interval",15)
modparam("dispatcher","ds_probing_mode",1)

In the opensips routing logic, I would like to separate register and invite
requests :

route {
...
    if (!is_method("REGISTER|MESSAGE")) {
        record_route(";rr=edge");
    }
   if (is_method("REGISTER")) {
        if (!ds_select_dst("1", "0")) {
            ds_mark_dst("p");
            ds_select_dst("2", "0");
        }
    }
    if (is_method("INVITE")) {
        if (!ds_select_dst("3", "0")) {
            ds_mark_dst("p");
            ds_select_dst("4", "0");
        }
    }
    route(RELAY);
    exit;
}

But, even if I change the routing logic with :
...
    if (is_method("REGISTER")) {
        ds_select_dst("1", "0");
    }
    if (is_method("INVITE")) {
        ds_select_dst("3", "0");
    }
...

It happens the same crash, same reason.

I'll change the "use_default" param to 0 and re-do tests.


.Sam.

Samuel MULLER

On Tue, Mar 13, 2012 at 6:14 PM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:

> **
> Ok, that's the info I was looking for :)..
>
> Looking at that group, should I understand you have only one destination
> in there, while having the  "use_default" on ? This makes a bit of none
> sense - the group has only the default destination (to be used in case of
> failure), but no regular destination ??
>
> Anyhow, there is a bug there, but I want to understand your setting, to be
> sure that the fix will be the right one ;)
>
> Thanks and regards,
> Bogdan
>
>
> On 03/13/2012 04:51 PM, Samuel Muller wrote:
>
> oups, sorry ...
>
> (gdb) p *idx
> $1 = {id = 1, nr = 1, last = 0, weight_sum = 0, dlist = 0x7f867d60b458,
> next = 0x0}
>
> ;)
>
> .Sam.
>
> Samuel MULLER
>
>
> On Tue, Mar 13, 2012 at 3:40 PM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:
>
>>  Hi Samuel,
>>
>> Print please "*idx" and not only "idx" - I need its content ;)
>>
>> Regards,
>> Bogdan
>>
>>
>> On 03/13/2012 04:35 PM, Samuel Muller wrote:
>>
>> Hello Bogdan,
>>
>> nice to see you again !
>>
>> here the stuff :
>>
>> [Thread debugging using libthread_db enabled]
>> Core was generated by `/opt/opensips/sbin/opensips -P
>> /opt/opensips/var/run/opensips.pid -m 256 -u sam'.
>> Program terminated with signal 8, Arithmetic exception.
>> #0  0x00007f26f086c513 in ds_select_dst (msg=0x80ebe8, set=<optimized
>> out>, alg=0, mode=<optimized out>,
>>     max_results=<optimized out>) at dispatch.c:1235
>> 1235                i = (i+1)%(idx->nr-1);
>>
>> (gdb) p i
>> $1 = 0
>>
>> (gdb) p idx
>> $2 = (ds_set_p) 0x7f26dee90350
>>
>> (gdb) l
>> 1230
>> 1231        i=ds_id;
>> 1232        while ( idx->dlist[i].flags&(DS_INACTIVE_DST|DS_PROBING_DST) )
>> 1233        {
>> 1234            if(ds_use_default!=0)
>> 1235                i = (i+1)%(idx->nr-1);
>> 1236            else
>> 1237                i = (i+1)%idx->nr;
>> 1238            if(i==ds_id)
>> 1239            {
>>
>>
>> I re-tested with a few modifications, like changing IPs in the dispatcher
>> list file, or into the routing logic ("do it simple like in the docs
>> examples"), the same problems still happens :/
>>
>> here's the corefile if needed :
>> http://public.l33.fr/corefile.opensips.tar.gz
>>
>>
>> Best regards,
>>
>> Samuel MULLER
>>
>>
>>
>> On Tue, Mar 13, 2012 at 2:51 PM, Bogdan-Andrei Iancu <bogdan at opensips.org
>> > wrote:
>>
>>> Hello Samuel,
>>>
>>> In gdb, could you please print the '*idx' and 'i' variables ?
>>>
>>> Thanks and regards,
>>> Bogdan
>>>
>>>
>>>
>>>
>>> On 03/07/2012 03:34 PM, Samuel Muller wrote:
>>>
>>>>  Hey all,
>>>>
>>>> I got this crash when testing proxies availability with the dispatcher
>>>> module :
>>>>
>>>> $ gdb  /opt/opensips/sbin/opensips core
>>>>
>>>> GNU gdb (GDB) 7.3-debian
>>>> This GDB was configured as "x86_64-linux-gnu".
>>>> Reading symbols from /opt/opensips/sbin/opensips...done.
>>>> [New LWP 11580]
>>>>
>>>> [Thread debugging using libthread_db enabled]
>>>> Core was generated by `/opt/opensips/sbin/opensips -P
>>>> /opt/opensips/var/run/opensips.pid -m 256 -u sam'.
>>>> Program terminated with signal 8, Arithmetic exception.
>>>> #0  0x00007f87b9b54513 in ds_select_dst (msg=0x80f988, set=<optimized
>>>> out>, alg=0,
>>>>     mode=<optimized out>, max_results=<optimized out>) at
>>>> dispatch.c:1235
>>>> 1235                i = (i+1)%(idx->nr-1);
>>>>
>>>>
>>>> in the opensips.cfg :
>>>>
>>>>
>>>> modparam("dispatcher","list_file","/opt/opensips/etc/opensips/dispatcher.list")
>>>> modparam("dispatcher","use_default",1)
>>>> modparam("dispatcher","dst_avp","$avp(dp_dst)")
>>>> modparam("dispatcher","attrs_avp","$avp(dp_attrs)")
>>>> modparam("dispatcher","grp_avp","$avp(dp_grp)")
>>>> modparam("dispatcher","cnt_avp","$avp(dp_cnt)")
>>>> modparam("dispatcher","hash_pvar","$avp(dp_hash)")
>>>> modparam("dispatcher","setid_pvar","$avp(dp_setid)")
>>>> modparam("dispatcher","ds_ping_from","sip:edge at lab.com")
>>>> modparam("dispatcher","ds_ping_interval",30)
>>>> modparam("dispatcher","ds_probing_mode",1)
>>>>
>>>> route {
>>>> ...
>>>>     if (!is_method("REGISTER|MESSAGE")) {
>>>>         record_route(";rr=edge");
>>>>     }
>>>>    if (is_method("REGISTER")) {
>>>>         if (!ds_select_dst("1", "0")) {
>>>>             ds_mark_dst("p");
>>>>             ds_select_dst("2", "0");
>>>>         }
>>>>     }
>>>>     if (is_method("INVITE")) {
>>>>         if (!ds_select_dst("3", "0")) {
>>>>             ds_mark_dst("p");
>>>>             ds_select_dst("4", "0");
>>>>         }
>>>>     }
>>>>     route(RELAY);
>>>>     exit;
>>>> }
>>>>
>>>>
>>>> in the dispatcher.list :
>>>>
>>>> 1 sip:1.2.3.4:5060
>>>> 2 sip:1.2.3.5:5060
>>>> 3 sip:1.2.3.6:5060
>>>> 4 sip:1.2.3.5:5060
>>>>
>>>> all is running under Debian last stable release + backports.
>>>>
>>>> I would like to know if it's my dispatcher configuration routine
>>>> that's not correct, or if it's a module problem ?
>>>>
>>>> thank you,
>>>>
>>>>
>>>> Samuel MULLER
>>>>
>>>>  _______________________________________________
>>>> Users mailing list
>>>> Users at lists.opensips.org
>>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>>
>>>>
>>>
>>> --
>>> Bogdan-Andrei Iancu
>>> OpenSIPS Founder and Developer
>>> http://www.opensips-solutions.com
>>>
>>>
>>
>>
>> --
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>
>>
>
>
> --
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>
>
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