[MPlayer-users] Major regression in r36452, sig 11 demux_open

Josh joshf87 at live.com
Wed Sep 25 05:49:25 CEST 2013


On 9/24/2013 03:49, Reimar Döffinger wrote:
> Josh <joshf87 at live.com> wrote:
>> On 9/22/2013 03:34, Reimar Döffinger wrote:
>>> On Sun, Sep 22, 2013 at 12:29:05AM -0400, Josh wrote:
>>>> I thought this was an FFmpeg regression but reverting to a known
>>>> good FFmpeg revision didn't fix the regression. Basically, in every
>>>> single h264/webm file I am getting a "Signal 11: demux_open" error.
>>>> I have traced this to r36452. There might be other formats affected.
>>>
>>> Should be fixed.
>>> It only happened "randomly", depending on your system, compilation
>>> options, configuration etc.
>>> The backtrace was completely misleading though.
>>> I don't know if you care about these things, but
>>> http://www.drmemory.org/ is a great tool for Windows that like
>>> valgrind on Linux/OSX makes tracking down these things much simpler.
>>> _______________________________________________
>>> MPlayer-users mailing list
>>> MPlayer-users at mplayerhq.hu
>>> https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
>>>
>>>
>>
>> Is this easier to decipher? Do you care about the 'leak' errors?
>
> Not easier to decipher, but at least contains the correct information :-)
> But just to avoid misunderstandings: you can confirm it is fixed?
>
>> Error #1: UNINITIALIZED READ: reading register eax
>> # 0 av_dict_get                       [libavutil/dict.c:43]
>
> This one points directly to the issue: an uninitialized dict pointer.
> Some of the leaks sound worrying, but I suspect they only appear because MPlayer crashed and this could not free things. So unless they appear when it does not crash they are not relevant.
>
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> MPlayer-users at mplayerhq.hu
> https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
>
Yes it was fixed.


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