[FFmpeg-devel,1/2] tools/target_dec_fuzzer: increase snows threshold

Submitted by Michael Niedermayer on Aug. 29, 2019, 7:46 p.m.

Details

Message ID 20190829194632.3918-1-michael@niedermayer.cc
State New
Headers show

Commit Message

Michael Niedermayer Aug. 29, 2019, 7:46 p.m.
snow allows creating large output from tiny input, like other
wavelet codecs

Fixes: Timeout (82sec -> 1.5sec)
Fixes: 9520/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-6286612576075776

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 Sept. 15, 2019, 10:22 p.m.
On Thu, Aug 29, 2019 at 09:46:31PM +0200, Michael Niedermayer wrote:
> snow allows creating large output from tiny input, like other
> wavelet codecs
> 
> Fixes: Timeout (82sec -> 1.5sec)
> Fixes: 9520/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-6286612576075776
> 
> 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 e22a0c5c34..6d7a4e925a 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -139,6 +139,7 @@  int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     case AV_CODEC_ID_HNM4_VIDEO:maxpixels /= 128; break;
         // Cliping in C, generally slow even with small input
     case AV_CODEC_ID_INDEO4:    maxpixels /= 128; break;
+    case AV_CODEC_ID_SNOW:      maxpixels /= 128; break;
     }