[asterisk-bugs] [Asterisk 0013505]: Memory leak in channel variables

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=13505 
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Reported By:                mav3rick
Assigned To:                Corydon76
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Project:                    Asterisk
Issue ID:                   13505
Category:                   Channels/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 143334 
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2008-09-17 11:06 CDT
Last Modified:              2008-09-18 15:04 CDT
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Summary:                    Memory leak in channel variables
Description: 
I detected the leak on Asterisk 1.4.21.2. I reproduced the bug easily on
the SVN trunk version. 

After 5000 calls, Asterisk is using more than 500Mb. 

I recompiled with MALLOC_DEBUG (and DONT_OPTIMIZE), and after around 500
calls I found :

661364 bytes in 6321 allocations in file 'config.c'
(numbers increase with calls).

That was the only abnormal allocation (and the only increasing).

All 'config.c' allocations are :

XX bytes allocated in ast_variable_new at line 240 of config.c
(appeared a lot of times with different values).

I added debug to config.c to know which variable was concerned. The only
variables I saw was the variables I set in call files (outgoing calls).

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 (0092674) Corydon76 (administrator) - 2008-09-18 15:04
 http://bugs.digium.com/view.php?id=13505#c92674 
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Okay, patch uploaded that should address both reported leaks.  pj, if you
want to provide more information similar to the chan_sip.c output as to
where leaks are occurring, I can take a look at those, as well.

Please keep the current debugging patch, as well as applying this new
patch, so that we can verify that I found and correctly patched these
issues. 

Issue History 
Date Modified    Username       Field                    Change               
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2008-09-18 15:04 Corydon76      Note Added: 0092674                          
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