[asterisk-dev] [Code Review] 2778: Fix memory corruption when trying to get "core show locks".

[wdoekes]

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Ship it!


Ship It!

- wdoekes


On Aug. 22, 2013, 4:17 p.m., rmudgett wrote:
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> https://reviewboard.asterisk.org/r/2778/
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> (Updated Aug. 22, 2013, 4:17 p.m.)
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> 
> Review request for Asterisk Developers.
> 
> 
> Bugs: ASTERISK-22221
>     https://issues.asterisk.org/jira/browse/ASTERISK-22221
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> Repository: Asterisk
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> Description
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> Review https://reviewboard.asterisk.org/r/2580/ tried to fix the mismatch in memory pools but had a math error determining the buffer size and didn't address other similar memory pool mismatches.
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> * Effectively reverted the previous patch to go in the same direction as trunk for the returned memory pool of ast_bt_get_symbols().
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> * Fixed memory leak in ast_bt_get_symbols() when BETTER_BACKTRACES is defined.
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> * Fixed some formatting in ast_bt_get_symbols().
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> * Fixed sig_pri.c freeing memory allocated by libpri when MALLOC_DEBUG is enabled.
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> * Fixed __dump_backtrace() freeing memory from ast_bt_get_symbols() when MALLOC_DEBUG is enabled.
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> * Moved __dump_backtrace() because of compile issues with the utils directory.
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> Diffs
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>   /branches/1.8/channels/sig_pri.c 397424 
>   /branches/1.8/include/asterisk/astmm.h 397424 
>   /branches/1.8/include/asterisk/lock.h 397424 
>   /branches/1.8/include/asterisk/logger.h 397424 
>   /branches/1.8/include/asterisk/utils.h 397424 
>   /branches/1.8/main/astmm.c 397424 
>   /branches/1.8/main/astobj2.c 397424 
>   /branches/1.8/main/lock.c 397424 
>   /branches/1.8/main/logger.c 397424 
>   /branches/1.8/main/utils.c 397424 
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> Diff: https://reviewboard.asterisk.org/r/2778/diff/
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> Testing
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> * Ran the testsuite masquerade test and it no longer fails/crashes.
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> * Did a manual local channel chain optimization with another console doing a "core show locks".  The other console did not cause a crash when the "core show locks" showed some lock backtraces.
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> 
> Thanks,
> 
> rmudgett
> 
>

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