[FFmpeg-devel,6/7] tools/target_dec_fuzzer: adjust pixel threshold for TRUEMOTION2, as it allows coding gigantic images on tiny input

Submitted by Michael Niedermayer on Aug. 15, 2019, 9:49 p.m.

Details

Message ID 20190815214915.909-6-michael@niedermayer.cc
State New
Headers show

Commit Message

Michael Niedermayer Aug. 15, 2019, 9:49 p.m.
Fixes: Timeout (137sec -> 6sec)
Fixes: 16090/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5674245178261504

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 tools/target_dec_fuzzer.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Michael Niedermayer Aug. 31, 2019, 4:08 p.m.
On Thu, Aug 15, 2019 at 11:49:14PM +0200, Michael Niedermayer wrote:
> Fixes: Timeout (137sec -> 6sec)
> Fixes: 16090/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5674245178261504
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>  tools/target_dec_fuzzer.c | 1 +
>  1 file changed, 1 insertion(+)

will apply

[...]

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diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index d83039417c..c5fc4f0537 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -173,6 +173,7 @@  int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     case AV_CODEC_ID_MSRLE:     maxpixels /= 16;  break;
     case AV_CODEC_ID_QTRLE:     maxpixels /= 16;  break;
     case AV_CODEC_ID_GIF:       maxpixels /= 16;  break;
+    case AV_CODEC_ID_TRUEMOTION2: maxpixels /= 1024; break;
         // Performs slow frame rescaling in C
     case AV_CODEC_ID_GDV:       maxpixels /= 256; break;
         // Postprocessing in C