# Fuzzing Linkerd

The scripting setup for fuzzing is used by [google/oss-fuzz] which
performs continuous fuzzing for the Linkerd project.

The fuzzing configuration for Linkerd is located in the [linkerd2
project directory][of-l2] which handles the docker build and execution of the
fuzzers.

## Running locally

Instructions for running the fuzzers locally can be found in the oss-fuzz
[docs].

This will require cloning the [google/oss-fuzz] repository locally and running
the commands outlined in the instructions.

### oss-fuzz File Setup

- [Dockerfile] provides the necessary environment for running the
  fuzzer; the main thing being the `oss-fuzz-base` image which provides the
  `compile_go_fuzzer` funtions seen in this directory's `build.sh`.
- [build.sh] is responsible for calling the fuzzing functions for each
  fuzzer in the linkerd2 project.

<!-- refs -->
[google/oss-fuzz]: https://github.com/google/oss-fuzz
[of-l2]: https://github.com/google/oss-fuzz/tree/master/projects/linkerd2
[docs]: https://google.github.io/oss-fuzz/getting-started/new-project-guide/#testing-locally
[Dockerfile]: https://github.com/google/oss-fuzz/blob/master/projects/linkerd2/Dockerfile
[build.sh]: https://github.com/google/oss-fuzz/blob/master/projects/linkerd2/build.sh