5 Apr
2013
5 Apr
'13
3:28 p.m.
Hello,
On 4/4/13 9:26 PM, Dragos Oancea wrote:
Hi Daniel, hi Guys,
I did not stress test it, I only had one registered device (which sent
the INVITE) , and another one was supposed to register after some
event triggered by kamailio via a http query (using the utils module)
- that's
the reason I parked the transaction with "t_suspend()" .
When the REGISTER for the second device comes I send the INVITE to the
it .( lookup() , t_relay() ) . This is a scenario that works for me. I
could say I tested 10 times and 1 time crashed.
I plan to stress test these days, let me know if I should get some
information for you while doing it.
can you spot if there are any error messages in
the syslog just before
the crash? It can be a buffer overflow done on the previous packet.
If you are doing some tests, maybe is better to re-compile with
'MEMDBG=1', to have details about what functions allocated the chunks.
For now, try to get the following from gdb:
p *(struct qm_frag_end*)(((char*)qm) - sizeof(struct qm_frag_end))
Cheers,
Daniel
Regards,
Dragos
------------------------------------------------------------------------
*From:* Daniel-Constantin Mierla <miconda(a)gmail.com>
*To:* Dragos Oancea <droancea(a)yahoo.com>om>; Kamailio (SER) - Development
Mailing List <sr-dev(a)lists.sip-router.org>
*Sent:* Thursday, April 4, 2013 8:53 PM
*Subject:* Re: [sr-dev] segfault with t_suspend() / t_continue()
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:
--
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 -
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(a)gmail.com>
<mailto:miconda@gmail.com>
*To:* Dragos Oancea <droancea(a)yahoo.com> <mailto:droancea@yahoo.com>;
Kamailio (SER) - Development Mailing List
<sr-dev(a)lists.sip-router.org> <mailto:sr-dev@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:
--
Daniel-Constantin Mierla -http://www.asipto.com <http://www.asipto.com/>
http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda>
-http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
-http://conference.kamailio.com <http://conference.kamailio.com/> -
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 -