[asterisk-bugs] [Asterisk 0017670]: ConfBridge crashes Asterisk

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17670 
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Reported By:                mutex
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17670
Category:                   Applications/app_confbridge
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.2.9 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-07-19 06:52 CDT
Last Modified:              2010-07-20 18:02 CDT
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Summary:                    ConfBridge crashes Asterisk
Description: 
I have an asterisk installation used mainly for ConfBridge use.

Operating system:

Linux atlas 2.6.18-194.3.1.el5.centos.plusPAE
https://issues.asterisk.org/view.php?id=1 SMP Wed May 19 10:00:02
EDT 2010 i686 i686 i386 GNU/Linux

Usage:

ConfBridge is hosting a small number of conferences with variable number
of atendees.
Typically its 1-2 speaker pr conf room and n number of muted listeners.
Conferences are typically 1-2 hours long.

Description of behaviour:

It seems that the crash occours typically when alot of callers is hanging
up, or something like this. Since the crash typically is after 1-2 hour
(near end or at end of conference). Looks like its happening while users
are leaving conference. But not sure! Ending in total crash of asterisk.


Confbridge configuration:

ConfBridge is used with "cM(something)" for speakers or "mM(something)1"
for listeners.

Codecs / Media:

All codecs are same. aLaw between single endpoint Sonus NBS/GSX gateway.

System hardware:

Dell 2850 4 cpu Intel Xeon with 8GB ram.
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 (0124777) mutex (reporter) - 2010-07-20 18:02
 https://issues.asterisk.org/view.php?id=17670#c124777 
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Thanks for you replies. I have compiled without code optimizing now.

I will try to get a usable backtrace from asterisk when it hangs or core
dumps next time.

I will take a look at the other timing sources also.

Today i was unable to get the backtrace during this hang, but i will fix
next time. Im not sure if this was the same since i have got core dumps
earlier, but it might be due to same issue.

See attachment for console info (tried to 'execute core show channels'
with variable success rate)

Top also shows cpu usage of 137% to asterisk.. :) 

Issue History 
Date Modified    Username       Field                    Change               
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2010-07-20 18:02 mutex          Note Added: 0124777                          
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