following comandline will crash the ffmpeg
ffmpeg -threads 17 -thread_type slice -i WPP_A_ericsson_MAIN_2.bit out.yuv -y
the HEVCContext->sList size is MAX_NB_THREADS(16), any > 16 thread number will
crash the application
---
libavcodec/hevcdec.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 699c13bbcc..457f75b551 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -3406,7 +3406,7 @@ static av_cold int hevc_decode_free(AVCodecContext *avctx)
av_freep(&s->sh.offset);
av_freep(&s->sh.size);
- for (i = 1; i < s->threads_number; i++) {
+ for (i = 1; i < FFMIN(s->threads_number, MAX_NB_THREADS); i++) {
HEVCLocalContext *lc = s->HEVClcList[i];
if (lc) {
av_freep(&s->HEVClcList[i]);
@@ -3608,6 +3608,10 @@ static av_cold int hevc_decode_init(AVCodecContext
*avctx)
s->threads_type = FF_THREAD_FRAME;
else
s->threads_type = FF_THREAD_SLICE;
+ if (s->threads_type == FF_THREAD_SLICE && s->threads_number >
MAX_NB_THREADS) {
+ av_log(s->avctx, AV_LOG_WARNING, "too many threads (%d), reducing to
%d.\n", s->threads_number, MAX_NB_THREADS);
+ s->threads_number = MAX_NB_THREADS;
+ }
return 0;
}
--
2.25.1
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