Google Develops KFuzzTest for Fuzzing Internal Linux Kernel Functions

phoronix.com

2 pointswesturner3 comments

From the linked LKML post:

> To demonstrate this framework's viability, support for KFuzzTest has been prototyped in a development fork of syzkaller, enabling coverage-guided fuzzing. To validate its end-to-end effectiveness, we performed an experiment by manually introducing an off-by-one buffer over-read into [...]

"kfuzztest: a new kernel fuzzing framework" (2025-08) https://lwn.net/Articles/1033619/

google/syzkaller @main: https://github.com/google/syzkaller

But there is also fuzztest?

google/fuzztest: https://github.com/google/fuzztest

I am confused, is KFuzzTest an OSS tool, or just a name for some feature they pushed into the kernal that is proprietary?

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