[asterisk-bugs] [Asterisk 0011082]: Asterisk 1.4.13 stock segfault on pthread_mutex_lock

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=11082 
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Reported By:                ljackson
Assigned To:                russell
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Project:                    Asterisk
Issue ID:                   11082
Category:                   Core-General
Reproducibility:            sometimes
Severity:                   crash
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.13  
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             10-24-2007 16:48 CDT
Last Modified:              10-25-2007 09:09 CDT
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Summary:                    Asterisk 1.4.13 stock segfault on pthread_mutex_lock
Description: 
after doing some config changes and issuing a iax2 reload and extensions
reload, it happend on the 3rd iax2 reload, asterisk segfaulted I ran gdb on
the core and this is the BT:

Core was generated by `/usr/sbin/asterisk -f -vvvg -c'.
Program terminated with signal 11, Segmentation fault.
http://bugs.digium.com/view.php?id=0  0x003ca2a0 in pthread_mutex_lock () from
/lib/libpthread.so.0
(gdb) where
http://bugs.digium.com/view.php?id=0  0x003ca2a0 in pthread_mutex_lock () from
/lib/libpthread.so.0
http://bugs.digium.com/view.php?id=1  0x0376c01b in iax2_poke_peer
(peer=0x9d296d8, heldcall=0)
    at /root/asterisk-dist/asterisk-1.4.13/include/asterisk/lock.h:610
http://bugs.digium.com/view.php?id=2  0x0378042c in iax2_process_thread
(data=0x9ce6150) at
chan_iax2.c:8259
http://bugs.digium.com/view.php?id=3  0x080f643b in dummy_start (data=0x9cde360)
at utils.c:806
http://bugs.digium.com/view.php?id=4  0x003c82db in start_thread () from
/lib/libpthread.so.0
http://bugs.digium.com/view.php?id=5  0x0032212e in clone () from /lib/libc.so.6



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---------------------------------------------------------------------- 
 ljackson - 10-25-07 09:09  
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the options DEBUG_THREADS and MALLOC_DEBUG made the audio sound very bad I
had to take them back out. I will still post a backtrace if I get a crash.

I personally believe this issue might be with how the thread mutexs are
handled or a race condition between when a iax reload is issued and the
iax2_peer_poke happens I believe that due to these both happening at the
same time, I think this caused the crash I saw.

Thanks,
Leif 

Issue History 
Date Modified   Username       Field                    Change               
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10-25-07 09:09  ljackson       Note Added: 0072499                          
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