rivet/.github/workflows/fuzz.yml at main · pulseengine/rivet · GitHub

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name: fuzz

# YAML-footgun and CLI fuzz targets.  Separate workflow from `ci.yml` because
# fuzz budgets are measured in minutes, not seconds.
#
# We run:
#   * on every push to main (post-merge confirmation)
#   * on a nightly schedule (06:17 UTC) so corpus growth is cumulative
# We do NOT run on PRs — too expensive for the critical path.
#
# Each target gets a 15-minute time budget.  The job is marked
# `continue-on-error: true` so a single crash does not block other work;
# crashes are surfaced as artifact uploads.

on:
  push:
    branches: [main]
  schedule:
    # Daily at 06:17 UTC.  Offset from round hour to spread CI load.
    - cron: "17 6 * * *"
  workflow_dispatch:

concurrency:
  group: fuzz-${{ github.ref }}
  cancel-in-progress: false

jobs:
  fuzz:
    name: fuzz ${{ matrix.target }}
    runs-on: ubuntu-latest
    continue-on-error: true
    strategy:
      fail-fast: false
      matrix:
        target:
          - yaml_footguns
          - cli_argv
          - artifact_ids
    timeout-minutes: 25

    steps:
      - uses: actions/checkout@v4

      - name: Install nightly toolchain
        uses: dtolnay/rust-toolchain@nightly

      - name: Install cargo-fuzz
        run: cargo install cargo-fuzz --locked

      - name: Build rivet binary (for cli_argv)
        if: matrix.target == 'cli_argv'
        run: cargo build --release --bin rivet

      - name: Cache fuzz corpora
        uses: actions/cache@v4
        with:
          path: |
            fuzz/corpus/${{ matrix.target }}
            fuzz/artifacts/${{ matrix.target }}
          key: fuzz-corpus-${{ matrix.target }}-${{ github.sha }}
          restore-keys: |
            fuzz-corpus-${{ matrix.target }}-

      - name: Run fuzz target for 15 minutes
        env:
          TARGET: ${{ matrix.target }}
          RIVET_BIN: ${{ github.workspace }}/target/release/rivet
        run: |
          cd fuzz
          cargo +nightly fuzz run "$TARGET" -- \
            -max_total_time=900 \
            -timeout=30 \
            -rss_limit_mb=2048

      - name: Upload crash artifacts
        if: failure() || cancelled()
        uses: actions/upload-artifact@v4
        with:
          name: fuzz-crashes-${{ matrix.target }}
          path: |
            fuzz/artifacts/${{ matrix.target }}/
          if-no-files-found: ignore
          retention-days: 30

      - name: Upload corpus snapshot
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: fuzz-corpus-${{ matrix.target }}
          path: fuzz/corpus/${{ matrix.target }}/
          if-no-files-found: ignore
          retention-days: 14