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[FFmpeg-devel,1/5] avcodec/proresdec2: decode picture header before frame allocation

Message ID 20190324224426.24868-1-michael@niedermayer.cc
State Accepted
Commit 468ae6a734b2db5fcfc9596770516d76ca8b2818
Headers show

Commit Message

Michael Niedermayer March 24, 2019, 10:44 p.m. UTC
Fixes: Timeout (21sec -> 0.3sec)
Fixes: 13716/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_fuzzer-5755593333145600

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/proresdec2.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Comments

Michael Niedermayer March 31, 2019, 3:46 p.m. UTC | #1
On Sun, Mar 24, 2019 at 11:44:22PM +0100, Michael Niedermayer wrote:
> Fixes: Timeout (21sec -> 0.3sec)
> Fixes: 13716/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_fuzzer-5755593333145600
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  libavcodec/proresdec2.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

will apply patchset

[...]
diff mbox

Patch

diff --git a/libavcodec/proresdec2.c b/libavcodec/proresdec2.c
index 6209c229c9..2652a31c81 100644
--- a/libavcodec/proresdec2.c
+++ b/libavcodec/proresdec2.c
@@ -778,9 +778,6 @@  static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     buf += frame_hdr_size;
     buf_size -= frame_hdr_size;
 
-    if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
-        return ret;
-
  decode_picture:
     pic_size = decode_picture_header(avctx, buf, buf_size);
     if (pic_size < 0) {
@@ -788,6 +785,10 @@  static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         return pic_size;
     }
 
+    if (ctx->first_field)
+        if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
+            return ret;
+
     if ((ret = decode_picture(avctx)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
         return ret;