[FFmpeg-trac] #5231(avcodec:closed): Crashes in ff_deblock_v_luma_8_sse2
FFmpeg
trac at avcodec.org
Thu Jun 23 18:24:44 CEST 2016
#5231: Crashes in ff_deblock_v_luma_8_sse2
-------------------------------------+-------------------------------------
Reporter: mi | Owner:
Type: defect | Status: closed
Priority: important | Component: avcodec
Version: unspecified | Resolution:
Keywords: h264 crash | needs_more_info
SIGSEGV | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by coypu):
Hi, for context on a working fix, -mstackrealign on GCC
-mstackrealign
Realign the stack at entry. On the Intel x86, the
-mstackrealign
option generates an alternate prologue and epilogue that
realigns
the run-time stack if necessary. This supports mixing legacy
codes
that keep 4-byte stack alignment with modern codes that keep
16-byte stack alignment for SSE compatibility. See also the
attribute "force_align_arg_pointer", applicable to individual
functions.
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Ticket URL: <https://trac.ffmpeg.org/ticket/5231#comment:17>
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