[Kamailio-Users] crashing problem

[Daniel-Constantin Mierla]

Hello,

as it seems to happen in a place that look safe from this point of view, 
might be the case of memory corruption (overwrite, double free, ...).

Needs to compile in memory debug mode, guidelines at:
http://www.kamailio.org/dokuwiki/doku.php/troubleshooting:memory

When run in debug mode, a double free or overwrite is reported in the log.

Cheers,
Daniel


On 08/25/08 11:42, Henning Westerholt wrote:
> On Saturday 23 August 2008, Jonathan K. Creasy wrote:
>   
>> We're using Carrier route with about 53,000 routes stored in a mysql
>> databse. We're getting this crash in production that we never had in the
>> lab.
>>
>> The bt is below. Does anyone have any suggestions?
>>
>> nline static void free_to_params(struct to_body* tb)
>> {
>>         struct to_param *tp=tb->param_lst;
>>         struct to_param *foo;
>>         while (tp){
>>                 foo = tp->next;   <-- ****  Line 75 *****
>>                 pkg_free(tp);
>>                 tp=foo;
>>         }
>> }
>>
>> #0  free_to (tb=0x817cf10) at parser/parse_to.c:75
>> #1  0x080daf70 in clean_hdr_field (hf=0x8a8ee18) at parser/hf.c:182
>> #2  0x080db05b in free_hdr_field_lst (hf=0x8a905b8) at parser/hf.c:209
>> #3  0x080db12d in free_sip_msg (msg=0x8193030) at parser/msg_parser.c:660
>>     
>
> Hi Jonathan,
>
> this seems not related to carrierroute, as you can see from the backtrace the 
> crash is in the parser code. Would be interesting if this is related to some 
> invalid message, or an unrelated error. Have you tried to replay the message 
> in your lab that causes the crash, after isolating it from the backtrace?
> You should also take a look into the "tp" pointer with the debugger, try to 
> investigate why it has an apparently invalid value here.
>
> Cheers,
>
> Henning
>
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>   

-- 
Daniel-Constantin Mierla
http://www.asipto.com