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test(fuzz): record reproducible run seeds (#6547)

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This commit is contained in:
Zhengchao An
2026-08-25 04:32:41 +08:00
committed by GitHub
parent 40e6decc93
commit 82df9ec4fa
5 changed files with 145 additions and 6 deletions
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scripts/fuzz/run.sh
+44 -4
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@@ -25,6 +25,7 @@
# Environment variables:
# FUZZ_TARGET — run only this target (default: all smoke targets)
# MAX_TOTAL_TIME — seconds to fuzz per target (default: 60)
# FUZZ_SEED — replay one libFuzzer seed (default: generate and record one per target)
# ARTIFACT_ROOT — artifact output directory (default: artifacts)
# BUILD_ONLY — set to 1 to skip fuzz runs (default: 0)
# SKIP_BUILD — set to 1 to skip build phase (default: 0)
@@ -37,6 +38,7 @@ SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
REPO_ROOT=$(CDPATH= cd -- "$SCRIPT_DIR/../.." && pwd)
FUZZ_DIR="$REPO_ROOT/fuzz"
MAX_TOTAL_TIME=${MAX_TOTAL_TIME:-60}
FUZZ_SEED=${FUZZ_SEED:-}
ARTIFACT_ROOT=${ARTIFACT_ROOT:-artifacts}
FUZZ_TARGET=${FUZZ_TARGET:-}
BUILD_ONLY=${BUILD_ONLY:-0}
@@ -44,6 +46,15 @@ SKIP_BUILD=${SKIP_BUILD:-0}
USE_PREBUILT_BINARY=${USE_PREBUILT_BINARY:-0}
PREBUILT_BINARY_DIR=${PREBUILT_BINARY_DIR:-}
if [ -n "$FUZZ_SEED" ]; then
case "$FUZZ_SEED" in
0*|*[!0-9]*)
echo "FUZZ_SEED must be a positive decimal integer without leading zeroes: $FUZZ_SEED" >&2
exit 1
;;
esac
fi
cd "$FUZZ_DIR"
mkdir -p "$ARTIFACT_ROOT"
@@ -75,6 +86,35 @@ for target in $targets; do
mkdir -p "$artifact_dir"
mkdir -p "$corpus_dir"
seed="$FUZZ_SEED"
if [ -z "$seed" ]; then
seed=$(printf '%s\n' "${GITHUB_RUN_ID:-local}:${GITHUB_RUN_ATTEMPT:-0}:$target:$(date +%s):$$" | cksum | awk '{print $1}')
if [ "$seed" = "0" ]; then
seed=1
fi
fi
revision=$(git -C "$REPO_ROOT" rev-parse HEAD 2>/dev/null || printf 'unknown')
if [ "$revision" = "unknown" ]; then
git_dirty="unknown"
elif [ -n "$(git -C "$REPO_ROOT" status --porcelain --untracked-files=normal 2>/dev/null)" ]; then
git_dirty="true"
else
git_dirty="false"
fi
if [ "$USE_PREBUILT_BINARY" = "1" ]; then
runner_mode="prebuilt"
else
runner_mode="cargo-fuzz"
fi
{
printf 'target=%s\n' "$target"
printf 'seed=%s\n' "$seed"
printf 'max_total_time=%s\n' "$MAX_TOTAL_TIME"
printf 'git_revision=%s\n' "$revision"
printf 'git_dirty=%s\n' "$git_dirty"
printf 'runner_mode=%s\n' "$runner_mode"
} > "$artifact_dir/run-manifest.txt"
if [ "$USE_PREBUILT_BINARY" = "1" ]; then
binary_dir="$PREBUILT_BINARY_DIR"
if [ -z "$binary_dir" ]; then
@@ -89,11 +129,11 @@ for target in $targets; do
echo "Missing executable prebuilt fuzz binary: $binary_path" >&2
exit 1
fi
echo "==> $binary_path (-max_total_time=$MAX_TOTAL_TIME, -artifact_prefix=$artifact_dir/, corpus=$corpus_dir)"
"$binary_path" -max_total_time="$MAX_TOTAL_TIME" -artifact_prefix="$artifact_dir/" "$corpus_dir"
echo "==> $binary_path (-max_total_time=$MAX_TOTAL_TIME, -seed=$seed, -artifact_prefix=$artifact_dir/, corpus=$corpus_dir)"
"$binary_path" -max_total_time="$MAX_TOTAL_TIME" -seed="$seed" -artifact_prefix="$artifact_dir/" "$corpus_dir"
continue
fi
echo "==> cargo +nightly fuzz run $target (-max_total_time=$MAX_TOTAL_TIME, -artifact_prefix=$artifact_dir/)"
cargo +nightly fuzz run "$target" -- -max_total_time="$MAX_TOTAL_TIME" -artifact_prefix="$artifact_dir/"
echo "==> cargo +nightly fuzz run $target (-max_total_time=$MAX_TOTAL_TIME, -seed=$seed, -artifact_prefix=$artifact_dir/)"
cargo +nightly fuzz run "$target" -- -max_total_time="$MAX_TOTAL_TIME" -seed="$seed" -artifact_prefix="$artifact_dir/"
done