[FFmpeg-cvslog] avcodec/vc1dec: use av_mallocz for luma_mv

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Dec 17 21:53:07 2013 +0100| [3e626548ce6d1ecb86733576dd7272b6ba6352ea] | committer: Michael Niedermayer

avcodec/vc1dec: use av_mallocz for luma_mv

This ensures that no mvs are uninitialized at the time of loop filtering
Fixes: msan_uninit-mem_7f0b6dfe293c_2786_SA20021.vc1
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3e626548ce6d1ecb86733576dd7272b6ba6352ea
---

 libavcodec/vc1dec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 9ed565c..50c7b2d 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -5516,7 +5516,7 @@ av_cold int ff_vc1_decode_init_alloc_tables(VC1Context *v)
     v->ttblk            = v->ttblk_base + s->mb_stride;
     v->is_intra_base    = av_mallocz(sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
     v->is_intra         = v->is_intra_base + s->mb_stride;
-    v->luma_mv_base     = av_malloc(sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
+    v->luma_mv_base     = av_mallocz(sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
     v->luma_mv          = v->luma_mv_base + s->mb_stride;
 
     /* allocate block type info in that way so it could be used with s->block_index[] */