[Bug 754120] avdec_hevc: Segfault in hevc decode with glimagesink and AVX2 CPU feature

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=754120

--- Comment #13 from Tim-Philipp Müller <t.i.m at zen.co.uk> ---
Did some more poking around.

Does not seem to be threading related (setting max-threads=1 and adding locking
to the function doesn't help.

If I comment out the two 'mova' at the end of TR_ADD_SSE_16_32_8 it works:
http://git.videolan.org/?p=ffmpeg.git;a=blob;f=libavcodec/x86/hevc_res_add.asm;hb=ed450d4acfc9fea0dae2df2b0a543ec0d602d31a#l132

Can't see any obvious alignment issues with the pointers passed to it, judging
from printfs (and it doesn't even seem to require 16-byte alignment).

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