[asterisk-dev] Need assistance: ast_frfree(f) causes asterisk to crash

[Artem Makhutov]

Am 03.03.2010 00:54, schrieb Mark Michelson:
> Artem Makhutov wrote:
>> Hello,
>>
>> I need some assistance for chan_datacard.
>>
>> There is a problem that plaing back .wav audio files with Playback()
>> will crash asterisk. This problem does not exist in usual voice calls or
>> playpack of .gsm files.
>>
>> I have hunted the problem and figure out that the crash is caused by
>> ast_frfree(f):
>>
>> http://pastebin.com/xjUbWUdx
>>
>> Can some body explain me, what is going wrong here? And why does this
>> only happen when using Playback() with a .wav file?
>
> It's hard to tell from what you have provided what is going wrong. It would be a
> good idea to provide a backtrace from a crash that you experience. Also, I would
> recommend running your test under valgrind since it can likely more clearly
> point out what the problem is. It would also be worthwhile to playback a gsm
> file with valgrind running just to be absolutely sure the same problem isn't
> happening with it.
>
> Also, if you do provide backtraces and valgrind traces, it would be a good idea
> to specify what version of Asterisk you're developing against as well.

I am developing agains asterisk 1.6.2.5.

I have removed the ast_frfree(f) from the function and could not see any 
complains of valgrind about it. Is it safe to asume that the frame is 
freed somewhere else?

Thanks, Artem

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