[OpenSIPS-Users] OpenSIPS crashing on 200 OK

Wed Feb 28 17:13:06 EST 2018

Bogdan,

You’re more than warm! Thanks for the quick turnaround on these fixes!

I’ve tested and verified each of them. I’ve not run into any more issues so far.

Ben Newlin

From: Bogdan-Andrei Iancu <bogdan at opensips.org>
Date: Wednesday, February 28, 2018 at 6:27 AM
To: Ben Newlin <Ben.Newlin at genesys.com>, OpenSIPS users mailling list <users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] OpenSIPS crashing on 200 OK

Hi Ben,

This new crash was also fixed - see https://github.com/OpenSIPS/opensips/commit/34f81b223fb466ecddf648f72f615ab24d4a86dc<https://github.com/OpenSIPS/opensips/commit/34f81b223fb466ecddf648f72f615ab24d4a86dc> .

Do you have any more crashes on the pipe to report :D ? I'm getting warm :)

Thanks and regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer

  http://www.opensips-solutions.com<http://www.opensips-solutions.com>

OpenSIPS Summit 2018

  http://www.opensips.org/events/Summit-2018Amsterdam<http://www.opensips.org/events/Summit-2018Amsterdam>
On 02/28/2018 06:19 AM, Ben Newlin wrote:
I was able to reproduce and capture a core dump of the crash. Backtrace is available here: https://pastebin.com/WtBB6cKm<https://pastebin.com/WtBB6cKm>

Thanks,
Ben Newlin

From: Ben Newlin <Ben.Newlin at genesys.com><mailto:Ben.Newlin at genesys.com>
Date: Tuesday, February 27, 2018 at 10:47 PM
To: Bogdan-Andrei Iancu <bogdan at opensips.org><mailto:bogdan at opensips.org>, OpenSIPS users mailling list <users at lists.opensips.org><mailto:users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] OpenSIPS crashing on 200 OK

Unfortunately, I have had another crash during testing. I was not able to capture the core, but I did get this log:

Feb 28 03:35:22 [359] CRITICAL:core:qm_debug_frag:  qm_*: prev. fragm. tail overwritten(c0c0c0c0c0c0c020, abcdefedabcdefed)[0x7fa6cd6c46b8:0x7fa6cd6c46f0] (del_uri_param, checks.c:242)!
Feb 28 03:35:23 [353] INFO:core:handle_sigs: child process 359 exited by a signal 6

I am making adjustments to be able to collect the core if the crash occurs again.

Thanks,
Ben Newlin

From: Ben Newlin <Ben.Newlin at genesys.com><mailto:Ben.Newlin at genesys.com>
Date: Tuesday, February 27, 2018 at 2:47 PM
To: Bogdan-Andrei Iancu <bogdan at opensips.org><mailto:bogdan at opensips.org>, OpenSIPS users mailling list <users at lists.opensips.org><mailto:users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] OpenSIPS crashing on 200 OK

Bogdan,

I found this previous thread that has this error: http://lists.opensips.org/pipermail/users/2016-October/035635.html<http://lists.opensips.org/pipermail/users/2016-October/035635.html>

The fix suggested there worked. When I removed the quotes around the regexp used in re.subst the crash did not occur.

Ben Newlin

From: Ben Newlin <Ben.Newlin at genesys.com><mailto:Ben.Newlin at genesys.com>
Date: Tuesday, February 27, 2018 at 2:20 PM
To: Bogdan-Andrei Iancu <bogdan at opensips.org><mailto:bogdan at opensips.org>, OpenSIPS users mailling list <users at lists.opensips.org><mailto:users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] OpenSIPS crashing on 200 OK

Bogdan,

I just tested it and that crash is no longer occurring. However I am now seeing a different crash, but it seems to still be related to regexp.

Feb 27 19:07:17 [369] ERROR:core:subst_parser: string too short
Feb 27 19:07:17 [369] ERROR:core:tr_eval_re: Can't compile regexp
Feb 27 19:07:17 [369] WARNING:core:do_assign: no value in right expression at /opensips/control.cfg:1952
Feb 27 19:07:17 [361] INFO:core:handle_sigs: child process 369 exited by a signal 11
Feb 27 19:07:17 [361] INFO:core:handle_sigs: core was generated
Feb 27 19:07:17 [361] INFO:core:handle_sigs: terminating due to SIGCHLD

The do_assign error makes it seem like there may be something wrong in my script, but I can’t see what it is. And I’m not sure what the “string too short” error is either or why the regexp could not be compiled. It looks valid to me.

Backtrace: https://pastebin.com/Fk2BRnsg<https://pastebin.com/Fk2BRnsg>

Ben Newlin

From: Bogdan-Andrei Iancu <bogdan at opensips.org><mailto:bogdan at opensips.org>
Date: Tuesday, February 27, 2018 at 12:55 PM
To: OpenSIPS users mailling list <users at lists.opensips.org><mailto:users at lists.opensips.org>, Ben Newlin <Ben.Newlin at genesys.com><mailto:Ben.Newlin at genesys.com>
Subject: Re: [OpenSIPS-Users] OpenSIPS crashing on 200 OK

Hi Ben,

I just committed the fix for this - could you update from GIT and give it a new try ?

Thanks and regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer

  http://www.opensips-solutions.com<http://www.opensips-solutions.com>

OpenSIPS Summit 2018

  http://www.opensips.org/events/Summit-2018Amsterdam<http://www.opensips.org/events/Summit-2018Amsterdam>
On 02/27/2018 06:19 PM, Bogdan-Andrei Iancu wrote:
Thanks Ben for the support in investigating this. The bug was identified and confirm, let me work on a fix right now. I will shortly ping you for testing ;)

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer

  http://www.opensips-solutions.com<http://www.opensips-solutions.com>

OpenSIPS Summit 2018

  http://www.opensips.org/events/Summit-2018Amsterdam<http://www.opensips.org/events/Summit-2018Amsterdam>
On 02/27/2018 12:12 AM, Bogdan-Andrei Iancu wrote:
OK, to be more precise, the crash is around an "If" statement where you have in the condition an REGEXP test (=~) with a left operand translated into "downstream" (maybe a $DLG_dir ??).
Does it sound familiar to you :) ?

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer

  http://www.opensips-solutions.com<http://www.opensips-solutions.com>

OpenSIPS Summit 2018

  http://www.opensips.org/events/Summit-2018Amsterdam<http://www.opensips.org/events/Summit-2018Amsterdam>
On 02/26/2018 11:32 PM, Ben Newlin wrote:
Yes, that is from that exact file, line 435. It’s just a return statement. I can send you the file off-list if you’d like.

I do use the $DLG_dir in my script in a few places, but the only one this crash would have hit is in some logging.

Ben Newlin

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