CASR – collect crash (or UndefinedBehaviorSanitizer error) reports, triage, and estimate severity. It is based on ideas from exploitable and apport. It could be built with exploitable feature for ...
In the tutorial: https://llvm.org/docs/LibFuzzer.html#rejecting-unwanted-inputs it says that "If the fuzz target returns -1 on a given input, libFuzzer will not add ...