[temp] fuzz: add timestamps, minimize on all branches

Add timestamp logging to each phase for profiling. Run corpus
minimization on all branches (not just main) for testing purposes.

AI tools were used in preparing this commit.

Author: joostjager

fuzz/ci-fuzz.sh

@@ -2,6 +2,11 @@
 set -e
 set -x
 
+log_time() {
+	echo ":::: $(date '+%Y-%m-%d %H:%M:%S') $1"
+}
+
+log_time "Verifying generated targets"
 pushd src/msg_targets
 rm msg_*.rs
 ./gen_target.sh
@@ -15,12 +20,14 @@ popd
 
 export RUSTFLAGS="--cfg=secp256k1_fuzz --cfg=hashes_fuzz"
 
+log_time "Generating write-seeds"
 mkdir -p hfuzz_workspace/full_stack_target/input
 pushd write-seeds
 RUSTFLAGS="$RUSTFLAGS --cfg=fuzzing" cargo run ../hfuzz_workspace/full_stack_target/input
 cargo clean
 popd
 
+log_time "Installing honggfuzz"
 cargo install --color always --force honggfuzz --no-default-features
 
 # Because we're fuzzing relatively few iterations, the maximum possible
@@ -29,13 +36,17 @@ sed -i 's/lto = true//' Cargo.toml
 
 export HFUZZ_BUILD_ARGS="--features honggfuzz_fuzz"
 
+log_time "Building fuzz targets"
 cargo --color always hfuzz build -j8
+
+log_time "Starting fuzz runs"
 for TARGET in src/bin/*.rs; do
 	FILENAME=$(basename $TARGET)
 	FILE="${FILENAME%.*}"
 	CORPUS_DIR="hfuzz_workspace/$FILE/input"
 	CORPUS_COUNT=$(find "$CORPUS_DIR" -type f 2>/dev/null | wc -l)
 	ITERATIONS=$((CORPUS_COUNT * 8 + 1000))
+	log_time "Fuzzing $FILE (corpus: $CORPUS_COUNT, iterations: $ITERATIONS)"
 	HFUZZ_RUN_ARGS="--exit_upon_crash -q -n8 -N $ITERATIONS --run_time 600"
 	if [ "$FILE" = "chanmon_consistency_target" ]; then
 		HFUZZ_RUN_ARGS="$HFUZZ_RUN_ARGS -F 64 -t 3"
@@ -53,14 +64,12 @@ for TARGET in src/bin/*.rs; do
 		done
 		exit 1
 	fi
-	if [ "$GITHUB_REF" = "refs/heads/main" ]; then
-		HFUZZ_RUN_ARGS="-M -q -n8 -t 3"
-		export HFUZZ_RUN_ARGS
-		cargo --color always hfuzz run $FILE
-		MIN_CORPUS_COUNT=$(find "$CORPUS_DIR" -type f 2>/dev/null | wc -l)
-		MIN_DELTA=$((MIN_CORPUS_COUNT - FUZZ_CORPUS_COUNT))
-		echo "$FILE: original=$CORPUS_COUNT, after fuzz=$FUZZ_CORPUS_COUNT [+$FUZZ_DELTA], after minimize=$MIN_CORPUS_COUNT [$MIN_DELTA]"
-	else
-		echo "$FILE: original=$CORPUS_COUNT, after fuzz=$FUZZ_CORPUS_COUNT [+$FUZZ_DELTA]"
-	fi
+	HFUZZ_RUN_ARGS="-M -q -n8 -t 3"
+	export HFUZZ_RUN_ARGS
+	cargo --color always hfuzz run $FILE
+	MIN_CORPUS_COUNT=$(find "$CORPUS_DIR" -type f 2>/dev/null | wc -l)
+	MIN_DELTA=$((MIN_CORPUS_COUNT - FUZZ_CORPUS_COUNT))
+	log_time "Finished $FILE (original: $CORPUS_COUNT, after fuzz: $FUZZ_CORPUS_COUNT [+$FUZZ_DELTA], after minimize: $MIN_CORPUS_COUNT [$MIN_DELTA])"
 done
+
+log_time "Done"