[asterisk-bugs] [Zaptel 0010593]: Zaptel crashes kernel - zt_init_tone_state

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
====================================================================== 
http://bugs.digium.com/view.php?id=10593 
====================================================================== 
Reported By:                jmhunter
Assigned To:                
====================================================================== 
Project:                    Zaptel
Issue ID:                   10593
Category:                   zaptel (the module)
Reproducibility:            sometimes
Severity:                   crash
Priority:                   normal
Status:                     new
Zaptel Version:             1.4.5.1  
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
====================================================================== 
Date Submitted:             08-29-2007 13:02 CDT
Last Modified:              08-29-2007 17:30 CDT
====================================================================== 
Summary:                    Zaptel crashes kernel - zt_init_tone_state
Description: 
When zaptel is compiled and installed on my system, any use of my TDM400P
card will eventually lead to a kernel crash - see attached trace.

The problem is reproducible by simply picking up a Zap channel handset. It
won't always crash straight away, though. Sometimes it takes longer to
crash, sometimes it's quicker - and I also get some really strange
"dialtones" varying from complete silence, through loud single tones, right
up to weird multiple tones similar to a fax or modem.

I don't believe this to be a hardware issue, as this system has been rock
solid under an older version of zaptel. The older zaptel versions no longer
compile cleanly under current kernels, however, so it's time for me to bite
the bullet and try to track down the cause of the crash.

Any suggestions gratefully received - where do I start?!
====================================================================== 

---------------------------------------------------------------------- 
 jmhunter - 08-29-07 17:30  
---------------------------------------------------------------------- 
I have now upgraded Asterisk from 1.4.9 to 1.4.11; the machine does still
crash.

It crashed straight away when unloading svn zaptel modules & reloading
1.4.5.1 modules (It hadn't crashed by this point after installing Asterisk
1.4.11 and I wanted to see if it still would crash with the non-svn
zaptel)

I noticed a crazy dialtone before it crashed most recently - not a regular
tone as I would expect but many tones being played at the same time. Quite
harsh, similar to a modem transmitting data.

This is my home machine so it's hard for me to test when I'm not there,
but I will leave it running with svn zaptel and Asterisk 1.4.11 for now. If
there's anything else I can check or do, or if you want the latest trace as
well, please let me know. 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
08-29-07 17:30  jmhunter       Note Added: 0069671                          
======================================================================