Comments (1)
eqv
commented on July 23, 2024
Thats a really good question! You REALLY shouldn't look at the number of paths found (nor at the number of unique crashes). Sometimes it can be very completely independent of the coverage found. Please check if the number of bits in the bitmap is also differing strongly. If it is, I'd recommend you to use a tool like kcov to inspect the code coverage found by each fuzzer. That will also allow you to look at the difference between the individual runs. I assume, there is some part of the codebase that's really hard to reach using the current grammar. If you identify that part, you can improve the grammar so that the fuzzer gets better coverage.
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