Writing about #fusil. Some bits:
Fuzzing #CPython with fusil shows it to be a valuable tool for finding and fixing crashers. It started in October 2024 and is ongoing, using free tier cloud instances and personal computers.
Results:
- Fuzzing time: > 25.000 hours
- Fuzzing sessions: > 1.000.000
- Hits: > 50.000
- Issues filled: 52
The original design of fusil makes it well-suited for fuzzing CPython, finding both deep, relevant bugs as well as shallow, low value crashes.