[sr-dev] segfault with t_suspend() / t_continue()

[Daniel-Constantin Mierla]

Hello,

at first sight looks like a missing safety check, but I may be wrong 
after a long day. I need to look a bit deeper at it.

Did you stress test it or was just casual trying? You said it happened 
one, couldn't be reproduced, right?

Cheers,
Daniel

On 4/4/13 8:28 PM, Dragos Oancea wrote:
> Hi Daniel,
>
> Here is the output of `bt full`:
> http://pastebin.com/tnrWML3L
> Let me know if I can be of any assistance further.
>
> Regards,
> Dragos
>
> ------------------------------------------------------------------------
> *From:* Daniel-Constantin Mierla <miconda at gmail.com>
> *To:* Dragos Oancea <droancea at yahoo.com>; Kamailio (SER) - Development 
> Mailing List <sr-dev at lists.sip-router.org>
> *Sent:* Thursday, April 4, 2013 7:28 PM
> *Subject:* Re: [sr-dev] segfault with t_suspend() / t_continue()
>
> Hello,
>
> could be related, but the issue seems to be while processing a SIP 
> reply, not with suspend/continue of a request. Can you send the output 
> of 'bt full'?
>
> Cheers,
> Daniel
>
> On 4/4/13 6:56 PM, Dragos Oancea wrote:
>> Hello,
>>
>>
>> I got the following coredump while doing some testing with 
>> t_suspend() and t_continue() on the first INVITE:
>>
>> (gdb) bt
>> #0  qm_detach_free (qm=0x7fe2dae65000, size=16) at mem/q_malloc.c:269
>> #1  qm_malloc (qm=0x7fe2dae65000, size=16) at mem/q_malloc.c:386
>> #2  0x00007fe2e5e6d541 in update_totag_set (t=0x7fe2db0f42d0, 
>> ok=<value optimized out>) at t_reply.c:372
>> #3  0x00007fe2e5e72387 in relay_reply (t=<value optimized out>, 
>> p_msg=<value optimized out>, branch=2, msg_status=200, 
>> cancel_data=0x7fff63fdf9b0, do_put_on_wait=1) at t_reply.c:1854
>> #4  0x00007fe2e5e733e6 in reply_received (p_msg=0x7fe2e6a55ba0) at 
>> t_reply.c:2370
>> #5  0x00000000004547f5 in do_forward_reply (msg=0x7fe2e6a55ba0, 
>> mode=<value optimized out>) at forward.c:799
>> #6  0x000000000049a5ba in receive_msg (buf=<value optimized out>, 
>> len=961, rcv_info=0x7fff63fdfc40) at receive.c:270
>> #7  0x00000000005281a6 in udp_rcv_loop () at udp_server.c:544
>> #8  0x0000000000464d3a in main_loop () at main.c:1638
>> #9  0x0000000000467a6c in main (argc=<value optimized out>, 
>> argv=<value optimized out>) at main.c:2566
>>
>>
>>
>> I suspend the transaction in one route and then I continue it in 
>> another route, similar to below:
>>
>> route[INVITE]
>> # Suspend and put to memcache:
>> t_suspend();
>>      xlog("proceesing suspended in transaction 
>> [$T(id_index):$T(id_label)]\n");
>>  $var(transaction_index)=$T(id_index);
>>  $var(transaction_label)=$T(id_label);
>>      $mct(wait_$tU)= "" + $var(transaction_index) + ":" + 
>> $var(transaction_label);
>>      $mctex(wait_$tU) = 100;
>> }
>>
>> route[INVITE_resume] {
>>
>> # get the transaction index and lable from memcache
>>     $avp(check) = $mct(wait_$tU) ; # I should have the transaction 
>> index and the transaction label here
>>  $var(my_transaction_index) =  $(avp(check){s.select,0,:});
>>  $var(my_transaction_label) =  $(avp(check){s.select,1,:});
>>  $var(a)= $(var(my_transaction_index){s.int});
>>  $var(b) = $(var(my_transaction_label){s.int});
>>
>>  t_continue( "$var(a)",  "$var(b)" , "my_relay_route");
>> }
>>
>> route[INVITE_resume] executes only on an asynchronous event (a 
>> certain SIP message that might come or not) .
>>
>> I use kamailio 4.0.0/Centos Linux. I suspect it happened when I sent 
>> CANCEL, but I could not reproduce. I still have the core file.
>>
>> Regards,
>> Dragos
>>
>>
>>
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>
> -- 
> Daniel-Constantin Mierla - http://www.asipto.com
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio World Conference, April 16-17, 2013, Berlin
>   - http://conference.kamailio.com -
>
>

-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
  - http://conference.kamailio.com -

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