[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:                     confirmed
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:              2008-10-10 02:15 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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Relationships       ID      Summary
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has duplicate       0013543 Memory leacks in stress test with failure
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---------------------------------------------------------------------- 
 (0093449) pj (reporter) - 2008-10-10 02:15
 http://bugs.digium.com/view.php?id=13505#c93449 
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uploading another set (pj-mem-sum-alloc3.zip) of memory summary/memory
allocations, that showing, that my asterisk still have huge (in comparison,
to relativelly few call processed) memory leaks in chan_sip.
it seems, that something is still wrong with:
copy_vars at line 11743 of chan_sip.c
can't be it related to another my issue http://bugs.digium.com/view.php?id=13115
? from time to time, I
have "could NOT get the channel lock" msg on CLI (mainly during hangup, so
due to this, variables aren't correctly destroyed?) but I haven't any death
sip channels.
Also notice, that I have relatively slow cpu (mobile PII, 300MHz). 

Issue History 
Date Modified    Username       Field                    Change               
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2008-10-10 02:15 pj             Note Added: 0093449                          
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