[asterisk-bugs] [Asterisk 0014057]: Deadlock chan_dahdi.c and channel.c

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
http://bugs.digium.com/view.php?id=14057 
====================================================================== 
Reported By:                rtrauntvein
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   14057
Category:                   Channels/chan_dahdi
Reproducibility:            random
Severity:                   crash
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.22 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
====================================================================== 
Date Submitted:             2008-12-10 17:13 CST
Last Modified:              2008-12-10 17:31 CST
====================================================================== 
Summary:                    Deadlock chan_dahdi.c and channel.c
Description: 
I have an asterisk system that has been deadlocking on a weekly basis at
least once, and we cant seem to reliably reproduce it. It is a production
system with about 25 users that is being constantly used.

Running zaptel 1.4.12.1 with a TE220 card.
(Planning on installing the DAHDI release over the weekend as next
troubleshooting step)
====================================================================== 

---------------------------------------------------------------------- 
 (0096163) putnopvut (administrator) - 2008-12-10 17:31
 http://bugs.digium.com/view.php?id=14057#c96163 
---------------------------------------------------------------------- 
Thank you very much for the absolutely excellent information! You've made
this much easier to track down.

The problem is that there is a thread which is "stuck" trying to stop a
channel from being in autoservice. This thread is holding onto some locks
at the time that it is stuck, and so no other threads can grab them. It's
not clear yet why the thread is stuck yet, but this helps to narrow the
search down by quite a lot. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2008-12-10 17:31 putnopvut      Note Added: 0096163                          
======================================================================