[asterisk-bugs] [Asterisk 0018526]: [patch] res_config_mysql.so crashes when processing "#include" with a file which doesn't exist

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=18526 
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Reported By:                makoto
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18526
Category:                   Addons/res_config_mysql
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     feedback
Asterisk Version:           Addons-1.6.2.1 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-12-24 03:14 CST
Last Modified:              2011-01-05 19:30 CST
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Summary:                    [patch] res_config_mysql.so crashes when processing
"#include" with a file which doesn't exist
Description: 
Step:
1. Add the following record to the realtime static table.

  filename  extensions.conf
  category  general
  var_name  #include
  var_val   /tmp/filedoesnotexist.txt

2. Restart Asterisk
3. Asterisk crashes


Attached patch will fix the problem.

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 (0130240) makoto (reporter) - 2011-01-05 19:30
 https://issues.asterisk.org/view.php?id=18526#c130240 
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ast_config_destroy is called at config_mysql() in res_config_mysql.c
But this is also done at ast_config_load2() in main/config.c
Then glibc detected double free and raised an exception.

Attached patch removes calling ast_config_destroy at config_mysql() 

Issue History 
Date Modified    Username       Field                    Change               
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2011-01-05 19:30 makoto         Note Added: 0130240                          
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