With a IO block size of 1 byte potentially megabytes are quite slow to read, thus limit the number
Fixes: 26511/clusterfuzz-testcase-minimized-ffmpeg_dem_NUV_fuzzer-5679249073373184 Fixes: 26517/clusterfuzz-testcase-minimized-ffmpeg_dem_XMV_fuzzer-6316634501021696 Fixes: 26518/clusterfuzz-testcase-minimized-ffmpeg_dem_WSVQA_fuzzer-485568285324083 Fixes: OOM Fixes: Timeout Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- tools/target_dem_fuzzer.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/target_dem_fuzzer.c b/tools/target_dem_fuzzer.c index 992b1a4d89..dbfed6354a 100644 --- a/tools/target_dem_fuzzer.c +++ b/tools/target_dem_fuzzer.c @@ -88,6 +88,7 @@ static int64_t io_seek(void *opaque, int64_t offset, int whence) // Ensure we don't loop forever const uint32_t maxiteration = 8096; +const int maxblocks= 100000; static const uint64_t FUZZ_TAG = 0x4741542D5A5A5546ULL; @@ -160,6 +161,10 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { av_strlcatf(filename, sizeof(filename), ".%s", extension); } } + + if (!io_buffer_size || size / io_buffer_size > maxblocks) + io_buffer_size = size; + io_buffer = av_malloc(io_buffer_size); if (!io_buffer) error("Failed to allocate io_buffer"); -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
