python-libphash/.github/workflows/fuzz.yml at main · gudoshnikovn/python-libphash · GitHub

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name: Fuzz

# Each fuzz target of tools/fuzz_targets.py for a quarter of an hour, in the
# AddressSanitizer build of tools/sanitizers.py; the sanitizer job of ci.yml gives them a
# minute each. Every run starts from the corpus in tests/fuzz/: an input that fails a
# target is uploaded, and goes into the corpus with the fix. It runs weekly, by hand,
# and when a target, the corpus or this workflow changes.
on:
  push:
    branches: [ main, 'release/**' ]
    paths: &fuzz-paths
      - tools/fuzz.py
      - tools/fuzz_targets.py
      - tests/fuzz/**
      - .github/workflows/fuzz.yml
  pull_request:
    branches: [ main, 'release/**' ]
    paths: *fuzz-paths
  schedule:
    - cron: '53 4 * * 1'
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  fuzz:
    strategy:
      fail-fast: false
      matrix:
        target: [ load, pixels, digest ]
    runs-on: ubuntu-24.04
    timeout-minutes: 45
    name: fuzz (${{ matrix.target }})
    steps:
    - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      with:
        persist-credentials: false

    - uses: ./.github/actions/setup

    - name: Install Clang and its sanitizer runtimes
      run: |
        sudo apt-get update
        sudo apt-get install -y clang libclang-rt-18-dev

    - name: Build under AddressSanitizer
      run: uv run --no-project python tools/sanitizers.py build address

    - name: Fuzz for 15 minutes
      run: |
        mkdir -p fuzz-crashes
        .venv/bin/python tools/sanitizers.py run fuzz sanitizer-logs -- \
          .venv/bin/python tools/fuzz.py ${{ matrix.target }} -max_total_time=900 \
          -max_len=65536 -artifact_prefix=fuzz-crashes/

    - name: Sanitizer reports
      if: ${{ !cancelled() }}
      run: .venv/bin/python tools/sanitizers.py check sanitizer-logs

    - uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
      if: failure()
      with:
        name: fuzz-${{ matrix.target }}
        path: |
          sanitizer-logs/
          fuzz-crashes/
        if-no-files-found: ignore