[FFmpeg-trac] #1231(undetermined:new): ffplay access violation
FFmpeg
trac at avcodec.org
Thu Apr 19 21:44:15 CEST 2012
#1231: ffplay access violation
-------------------------------------+-------------------------------------
Reporter: ronag | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: win64 | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by ronag):
I've tried to reproduce it in VS2010 using the ffmpeg libraries:
I can also get the w64 build to crash with the following.
{{{
while(true)
{
AVFormatContext* ic = nullptr;
avformat_open_input(&ic, "M:\\t.mp4", nullptr, nullptr);
avformat_find_stream_info(ic, nullptr);
avformat_close_input(&ic);
Sleep(1000);
}
}}}
Which crashes. It is interesting that it crashes on vmovaps, since I just
recently upgraded to a Sandy Bridge cpu with AVX instructions.
----------------------------------------------
{{{
avcodec-54.dll!000000006a5b7ef0()
[Frames below may be incorrect and/or missing, no symbols loaded for
avcodec-54.dll]
avcodec-54.dll!000000006a5b8035()
avcodec-54.dll!000000006a5b8e95()
avcodec-54.dll!000000006a5b8ed5()
avcodec-54.dll!000000006a5b8f15()
avcodec-54.dll!000000006a5b8f55()
avcodec-54.dll!000000006a5badf6()
avcodec-54.dll!000000006b381fa0()
}}}
--------------------------------------------
{{{
000000006A5B7EF0 vmovaps ymm2,ymmword ptr [rcx+40h] <-- Access
violation reading location 0xffffffffffffffff.
000000006A5B7EF5 vmovaps ymm3,ymmword ptr [rcx+60h]
000000006A5B7EFA vsubps ymm7,ymm2,ymm3
000000006A5B7EFE vaddps ymm2,ymm2,ymm3
000000006A5B7F02 vxorps ymm7,ymm7,ymmword ptr [6ADEA300h]
000000006A5B7F0A vshufps ymm3,ymm2,ymm7,0BEh
000000006A5B7F0F vshufps ymm2,ymm2,ymm7,44h
000000006A5B7F14 vsubps ymm7,ymm2,ymm3
000000006A5B7F18 vaddps ymm2,ymm2,ymm3
000000006A5B7F1C vshufps ymm3,ymm2,ymm7,0DDh
000000006A5B7F21 vshufps ymm2,ymm2,ymm7,88h
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1231#comment:4>
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