ci: use CFLite to test forks (including systemd-stable)

It's like CIFuzz but unlike CIFuzz it's compatible with forks and
it should make it possible to run the fuzzers to make sure that
patches backported to them are backported correctly without introducing
new bugs and regressions.

5 files changed, 80 insertions, 1 deletions

diff --git a/.clusterfuzzlite/Dockerfile b/.clusterfuzzlite/Dockerfile
new file mode 100644
index 0000000000..bdb0378ebc
--- /dev/null
+++ b/.clusterfuzzlite/Dockerfile
@@ -0,0 +1,4 @@
+FROM gcr.io/oss-fuzz-base/base-builder@sha256:14b332de0e18683f37386eaedbf735bc6e8d81f9c0e1138d620f2178e20cd30a
+COPY . $SRC/systemd
+WORKDIR $SRC/systemd
+COPY tools/oss-fuzz.sh $SRC/build.sh
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index a23d6374c1..c6d66e1031 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -12,3 +12,8 @@ updates:
     schedule:
       interval: "monthly"
     open-pull-requests-limit: 2
+  - package-ecosystem: "docker"
+    directory: "/.clusterfuzzlite"
+    schedule:
+      interval: "monthly"
+    open-pull-requests-limit: 2
diff --git a/.github/workflows/cflite_build.yml b/.github/workflows/cflite_build.yml
new file mode 100644
index 0000000000..cfb3721a0e
--- /dev/null
+++ b/.github/workflows/cflite_build.yml
@@ -0,0 +1,31 @@
+---
+# vi: ts=2 sw=2 et:
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+name: ClusterFuzzLite continuous builds
+on:
+  push:
+    branches:
+      - main
+      - v[0-9]+-stable
+
+permissions: read-all
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    if: github.repository != 'systemd/systemd'
+    concurrency:
+      group: ${{ github.workflow }}-${{ matrix.sanitizer }}-${{ github.ref }}
+      cancel-in-progress: true
+    strategy:
+      fail-fast: false
+      matrix:
+        sanitizer: [address, undefined, memory]
+    steps:
+    - name: Build Fuzzers (${{ matrix.sanitizer }})
+      id: build
+      uses: google/clusterfuzzlite/actions/build_fuzzers@41dccd0566905e2a7d1724e7883edbfa66d78877
+      with:
+        sanitizer: ${{ matrix.sanitizer }}
+        upload-build: true
diff --git a/.github/workflows/cflite_pr.yml b/.github/workflows/cflite_pr.yml
new file mode 100644
index 0000000000..3fe2bac618
--- /dev/null
+++ b/.github/workflows/cflite_pr.yml
@@ -0,0 +1,39 @@
+---
+# vi: ts=2 sw=2 et:
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+name: ClusterFuzzLite PR fuzzing
+on:
+  pull_request:
+    branches:
+      - main
+      - v[0-9]+-stable
+
+permissions: read-all
+
+jobs:
+  PR:
+    runs-on: ubuntu-latest
+    if: github.repository != 'systemd/systemd' || github.event.pull_request.user.login == 'dependabot[bot]'
+    concurrency:
+      group: ${{ github.workflow }}-${{ matrix.sanitizer }}-${{ github.ref }}
+      cancel-in-progress: true
+    strategy:
+      fail-fast: false
+      matrix:
+        sanitizer: [address, undefined, memory]
+    steps:
+    - name: Build Fuzzers (${{ matrix.sanitizer }})
+      id: build
+      uses: google/clusterfuzzlite/actions/build_fuzzers@41dccd0566905e2a7d1724e7883edbfa66d78877
+      with:
+        sanitizer: ${{ matrix.sanitizer }}
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+    - name: Run Fuzzers (${{ matrix.sanitizer }})
+      id: run
+      uses: google/clusterfuzzlite/actions/run_fuzzers@41dccd0566905e2a7d1724e7883edbfa66d78877
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        fuzz-seconds: 1200
+        mode: 'code-change'
+        sanitizer: ${{ matrix.sanitizer }}
diff --git a/tools/oss-fuzz.sh b/tools/oss-fuzz.sh
index 1d7412a81b..f227eb0e85 100755
--- a/tools/oss-fuzz.sh
+++ b/tools/oss-fuzz.sh
@@ -80,7 +80,7 @@ rm -rf "$hosts"
 
 # The seed corpus is a separate flat archive for each fuzzer,
 # with a fixed name ${fuzzer}_seed_corpus.zip.
-for d in "$(dirname "$0")/../test/fuzz/fuzz-"*; do
+for d in test/fuzz/fuzz-*; do
     zip -jqr "$OUT/$(basename "$d")_seed_corpus.zip" "$d"
 done