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Merged
bdraco merged 1 commit into from
Aug 28, 2026
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ci: add a manually dispatched asan fuzzing workflow with a status gate #1833

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47 changes: 47 additions & 0 deletions .github/workflows/asan.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@
name: ASan fuzz

on:
workflow_dispatch:
inputs:
profile:
description: "Hypothesis profile"
default: "long"
type: choice
options:
- ci
- long

jobs:
asan-fuzz:
runs-on: ubuntu-latest
timeout-minutes: 120
steps:
- uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v4
- name: Set up uv
uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
with:
enable-cache: true
- name: Install poetry
run: uv tool install poetry
- name: Set up Python
uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v5
with:
python-version: "3.13"
cache: "poetry"
- name: Install dependencies
env:
REQUIRE_CYTHON: 1
run: poetry install --only=main,dev
- name: Rebuild the extensions with AddressSanitizer
env:
REQUIRE_CYTHON: 1
CFLAGS: "-fsanitize=address -g -O1"
LDFLAGS: "-fsanitize=address"
run: poetry run python setup.py build_ext --inplace --force
- name: Fuzz the parser under ASan
env:
HYPOTHESIS_PROFILE: ${{ inputs.profile }}
run: |
export LD_PRELOAD=$(gcc -print-file-name=libasan.so)
export ASAN_OPTIONS=detect_leaks=0:halt_on_error=1
poetry run pytest --timeout=1800 -v --no-cov tests/test_fuzz_incoming.py tests/test_protocol.py
21 changes: 21 additions & 0 deletions .github/workflows/ci.yml
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Expand Up @@ -46,6 +46,27 @@ jobs:
didn't match the configured pattern. Please ensure that the subject
starts with a lowercase character.

# The ASan fuzz workflow only runs on manual dispatch; this gate keeps a
# failed run from rotting silently by blocking CI until it is green again.
asan-status:
name: Last ASan fuzz run
runs-on: ubuntu-latest
permissions:
actions: read
steps:
- name: Fail if the most recent ASan fuzz run on master failed
env:
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
run: |
conclusion=$(gh api \
"repos/${{ github.repository }}/actions/workflows/asan.yml/runs?branch=master&status=completed&per_page=1" \
--jq '.workflow_runs[0].conclusion // "none"')
echo "Most recent ASan fuzz run on master: $conclusion"
if [ "$conclusion" = "failure" ]; then
echo "The most recent ASan fuzz run failed; fix the regression or re-run the workflow." >&2
exit 1
fi

test:
strategy:
fail-fast: false
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