ci: turn on CIFuzz

Now that almost all the bugs reported by OSS-Fuzz have been
fixed libsepol/cil should be stable enough to get CIFuzz working
more or less reliably. It should help to catch regressions/new bugs
faster.

https://google.github.io/oss-fuzz/getting-started/continuous-integration/

The patch was tested on GitHub in #285
The CIFuzz job can be found at https://github.com/SELinuxProject/selinux/actions/runs/1017865690

Signed-off-by: Evgeny Vereshchagin <[email protected]>

.github/workflows/cifuzz.yml

@@ -0,0 +1,39 @@
+---
+name: CIFuzz
+on:
+ push:
+ branches:
+ - master
+ pull_request:
+ branches:
+ - master
+jobs:
+ Fuzzing:
+ runs-on: ubuntu-latest
+ if: github.repository == 'SELinuxProject/selinux'
+ strategy:
+ fail-fast: false
+ matrix:
+ sanitizer: [address, undefined, memory]
+ steps:
+ - name: Build Fuzzers (${{ matrix.sanitizer }})
+ id: build
+ uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+ with:
+ oss-fuzz-project-name: 'selinux'
+ dry-run: false
+ allowed-broken-targets-percentage: 0
+ sanitizer: ${{ matrix.sanitizer }}
+ - name: Run Fuzzers (${{ matrix.sanitizer }})
+ uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+ with:
+ oss-fuzz-project-name: 'selinux'
+ fuzz-seconds: 180
+ dry-run: false
+ sanitizer: ${{ matrix.sanitizer }}
+ - name: Upload Crash
+ uses: actions/upload-artifact@v1
+ if: failure() && steps.build.outcome == 'success'
+ with:
+ name: ${{ matrix.sanitizer }}-artifacts
+ path: ./out/artifacts