[asterisk-bugs] [Asterisk 0013160]: Memory leak in iax2-parser.c

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=13160 
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Reported By:                tavius
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13160
Category:                   Channels/chan_iax2
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.21.2 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2008-07-25 10:10 CDT
Last Modified:              2008-07-31 07:41 CDT
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Summary:                    Memory leak in iax2-parser.c
Description: 
We have found compiling asterisk without LOW_MEMORY has a memory leak in
iax_frame_new. It seems that the AST_LIST_TRAVERSE_SAFE_BEGIN macro is not
traversing the linked list in good way.
We have traced adding some ast_log in the code that iax_frame_free add
buffers in the frame cache linked list and after that iax_frame_new does
not find this free buffer in the list and allocates a new buffer with
ast_calloc_cache.
With the time and with our system, that receives too many calls, asterisk
gets all the available memory in the system and produces an error.
If we compile with LOW_MEMORY, then this piece of code is not compiled and
asterisk does not have memory leaks.
====================================================================== 

---------------------------------------------------------------------- 
 (0090899) tavius (reporter) - 2008-07-31 07:41
 http://bugs.digium.com/view.php?id=13160#c90899 
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ops, first call, three seconds and this:

[2008-07-31 13:47:37] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:37] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616'
[2008-07-31 13:47:37] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:37] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616'
[2008-07-31 13:47:37] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:37] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616'
[2008-07-31 13:47:38] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:38] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616'
[2008-07-31 13:47:39] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:39] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616'
[2008-07-31 13:47:39] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:39] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616'
[2008-07-31 13:47:39] ERROR[27861]: iax2-parser.c:1034 iax_frame_free:
Frame cache full for thread 3066825616
[2008-07-31 13:47:39] ERROR[27861]: utils.c:861 ast_log_thread_info:
Thread 'iax2_process_thread  started at [ 9130] chan_iax2.c
start_network_thread()' ID '3066825616' 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2008-07-31 07:41 tavius         Note Added: 0090899                          
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