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* tools: add a syz-diff toolAleksandr Nogikh2024-10-251-0/+139
This is the prototype version of the patch series fuzzing functionality based on the syzkaller fuzzing engine. The tool takes two syzkaller configs -- one for the base kernel, one for the patched kernel. Optionally the patch itself can be also provided. syz-diff will consider a bug patched-only if: 1) It happened while fuzzing the patched kernel. 2) It was never observed on the base kernel. 3) The tool found a repro on the patched kernel. 4) The repro did not crash the base kernel.