Nightly Fuzz #131
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| name: Nightly Fuzz | |
| on: | |
| workflow_dispatch: | |
| inputs: | |
| max_total_time: | |
| description: "Per-target fuzz duration in seconds" | |
| default: "600" | |
| required: false | |
| schedule: | |
| - cron: "0 2 * * *" | |
| jobs: | |
| fuzz: | |
| runs-on: ubuntu-24.04 | |
| permissions: | |
| contents: read | |
| actions: write # needed to save the corpus cache | |
| steps: | |
| - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4 | |
| - name: Install dependencies | |
| run: | | |
| sudo apt-get update | |
| sudo apt-get install -y clang llvm libbpf-dev pkg-config cmake ninja-build libgtest-dev | |
| - name: Configure | |
| env: | |
| CC: clang | |
| CXX: clang++ | |
| run: cmake -S . -B build-fuzz -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DENABLE_FUZZING=ON -DBUILD_TESTING=OFF -DSKIP_BPF_BUILD=ON | |
| - name: Build | |
| run: cmake --build build-fuzz --target fuzz_policy fuzz_bundle fuzz_network fuzz_path fuzz_event | |
| # The runtime corpus is a union of (a) checked-in seeds and | |
| # (b) interesting inputs libFuzzer discovered on previous nightly | |
| # runs. Restoring from cache lets coverage compound night-over-night | |
| # rather than starting from zero-byte seeds every run. | |
| - name: Restore previous corpus | |
| uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4 | |
| with: | |
| path: runtime-corpus | |
| key: fuzz-corpus-${{ github.run_id }} | |
| restore-keys: | | |
| fuzz-corpus- | |
| - name: Prepare runtime corpus | |
| run: | | |
| for target in fuzz_policy fuzz_bundle fuzz_network fuzz_path fuzz_event; do | |
| mkdir -p "runtime-corpus/${target}" | |
| # -n: do not overwrite inputs discovered by previous runs | |
| if [ -d "tests/fuzz/corpus/${target}" ]; then | |
| cp -an "tests/fuzz/corpus/${target}/." "runtime-corpus/${target}/" 2>/dev/null || true | |
| fi | |
| echo "${target}: $(ls "runtime-corpus/${target}" | wc -l) inputs" | |
| done | |
| - name: Run fuzzers (nightly deep) | |
| env: | |
| MAX_TOTAL_TIME: ${{ inputs.max_total_time || '600' }} | |
| run: | | |
| for target in fuzz_policy fuzz_bundle fuzz_network fuzz_path fuzz_event; do | |
| echo "Fuzzing ${target} for ${MAX_TOTAL_TIME}s" | |
| if [ "${target}" = "fuzz_event" ]; then | |
| # fuzz_event decodes events to stdout; redirect to keep logs | |
| # manageable while still surfacing libFuzzer stderr stats. | |
| ./build-fuzz/${target} "runtime-corpus/${target}" \ | |
| -max_total_time="${MAX_TOTAL_TIME}" \ | |
| -print_final_stats=1 \ | |
| >/dev/null | |
| else | |
| ./build-fuzz/${target} "runtime-corpus/${target}" \ | |
| -max_total_time="${MAX_TOTAL_TIME}" \ | |
| -print_final_stats=1 | |
| fi | |
| done | |
| # Save the grown corpus so tomorrow's run starts from here. | |
| # Key includes run_id so we never overwrite; actions/cache uses LRU | |
| # eviction if the repo exceeds its 10 GB quota. | |
| - name: Save corpus cache | |
| if: always() | |
| uses: actions/cache/save@0057852bfaa89a56745cba8c7296529d2fc39830 # v4 | |
| with: | |
| path: runtime-corpus | |
| key: fuzz-corpus-${{ github.run_id }} | |
| - name: Upload fuzz crash artifacts | |
| if: failure() | |
| uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4 | |
| with: | |
| name: nightly-fuzz-crashes | |
| path: | | |
| crash-* | |
| build-fuzz/crash-* |