[asterisk-bugs] [Asterisk 0018619]: Asterisk deadlocks with no errors

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=18619 
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Reported By:                wufan
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18619
Category:                   Core/General
Reproducibility:            random
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.2.15 
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:             2011-01-14 07:57 CST
Last Modified:              2011-01-20 01:16 CST
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Summary:                    Asterisk deadlocks with no errors
Description: 
Hi,

we have every https://issues.asterisk.org/view.php?id=5#c1-2 weeks a deadlock. 
Max 10 cc. About 40 users.
Never get any error message or warning.

Last time it happend 2010-12-21 (with version 1.6.2.13) the console
outputs some sip destroying packets and the peers go offline about 5
minutes later availible again and so on.. the asterisk didnt answered to
the sip packets or answered after a few seconds.

This time it happened (1 hour ago) (with version 1.6.2.15) there are no
such errors .. only nothing :)

When i wrote "sip show peers" it showed me the peers
but console dial 50 at context did nothing.


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Relationships       ID      Summary
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related to          0018310 [patch] hint state changes deadlock/race
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 (0130762) sysreq (reporter) - 2011-01-20 01:16
 https://issues.asterisk.org/view.php?id=18619#c130762 
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We've had the same problem here, where Asterisk would stop processing SIP
requests altogether. Unfortunately, we haven't been able to provide the
output of a 'core show locks' since enabling the DEBUG_THREADS compilation
flag on our servers would more than double the CPU utilization and affect
calls through audio quality issues and such.

Although, we did notice that the issue seemed to arise from 1.6.2.10 up
until 1.6.2 SVN r299242M (a little after 1.6.2.15, which had issues with
blind transfers.. so we had to upgrade). I have 1.6.2.8 running on a server
that used to hang once a day when using 1.6.2.15 and I haven't had any
problems since about a week now.

Here's a couple bug tracker issues I stumbled upon while seeking for
patches that might be related to the issue at hand:

https://issues.asterisk.org/view.php?id=18036
https://issues.asterisk.org/view.php?id=18511
https://issues.asterisk.org/view.php?id=18132 

Issue History 
Date Modified    Username       Field                    Change               
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2011-01-20 01:16 sysreq         Note Added: 0130762                          
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