[asterisk-bugs] [Asterisk 0014456]: Segfault in chan_iax.so

[Asterisk Bug Tracker]

The following issue requires your FEEDBACK. 
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http://bugs.digium.com/view.php?id=14456 
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Reported By:                kopspa
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14456
Category:                   Channels/chan_iax2
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.21 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-02-11 08:47 CST
Last Modified:              2009-02-11 09:00 CST
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Summary:                    Segfault in chan_iax.so
Description: 
Hi All,
I've some strange problems with some kind of PBXs

i see a lot of

asterisk[16692]: segfault at c6 ip b3887174 sp aeffc3b0 error 4 in
chan_iax2.so[b3868000+3e000]
asterisk[16921]: segfault at c6 ip b38f7174 sp b20893b0 error 4 in
chan_iax2.so[b38d8000+3e000]

in my logs.

Note that it happens only in some cases: all my machines running asterisk
and iaxmodem. The problem occurs in asterisk 1.4.21,22 and 23
It is an Asterisk compiled from scratch in a vmware virtual machine and
packaged by me for Debian Etch
I have also some Asterisk boxes with IAX trunks (for some of my customers
that needs 2 or more PBXs) and on that boxes i haven't see the problem... I
use iaxmodem for getting/sending faxes (after nv_faxdetect)

What i could do to debug the problem? I've not setup some insane CFLAGS to
compile asterisk, simply ./configure; make; make install and then i
manually build the .deb

Thanks
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---------------------------------------------------------------------- 
 (0099883) file (administrator) - 2009-02-11 09:00
 http://bugs.digium.com/view.php?id=14456#c99883 
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Unfortunately this is not very useful. We need a backtrace to see exactly
where it is crashing. Please use the latest version of Asterisk.
Instructions for getting a backtrace are in the backtrace.txt file in the
doc directory of the Asterisk source code. Please make sure that your code
is compiled with DONT_OPTIMIZE enabled. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-02-11 09:00 file           Note Added: 0099883                          
2009-02-11 09:00 file           Status                   new => feedback     
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