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[infra] Indicate coverage run failure when libFuzzer reports an error #13103

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[infra] Indicate coverage run failure when libFuzzer reports an error #13103

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15 changes: 14 additions & 1 deletion infra/base-images/base-runner/coverage
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Original file line number Diff line number Diff line change
Expand Up @@ -99,7 +99,14 @@ function run_fuzz_target {

export LLVM_PROFILE_FILE=$profraw_file
timeout $TIMEOUT $OUT/$target $args &> $LOGS_DIR/$target.log
if (( $? != 0 )); then
cov_retcode=$?

target_error_log="$LOGS_DIR/${target}_error.log"
grep -E "==[0-9]+== ERROR: libFuzzer:" "$LOGS_DIR/$target.log" > "$target_error_log"
grep_retcode=$?

echo "Cov returncode: $cov_retcode, grep returncode: $grep_retcode"
if (( $cov_retcode != 0 || $grep_retcode == 0 )); then
echo "Error occured while running $target:"
cat $LOGS_DIR/$target.log
fi
Expand All @@ -126,6 +133,12 @@ function run_fuzz_target {
llvm-cov export -summary-only -instr-profile=$profdata_file -object=$target \
$shared_libraries $LLVM_COV_COMMON_ARGS > $FUZZER_STATS_DIR/$target.json

# If grep returned zero an error was matched.
echo "Coverage error, creating log file: $FUZZER_STATS_DIR/${target}_error.log"
if (( $cov_retcode != 0 || $grep_retcode == 0 )); then
mv "$target_error_log" "$FUZZER_STATS_DIR/${target}_error.log";
fi

# For introspector.
llvm-cov show -instr-profile=$profdata_file -object=$target -line-coverage-gt=0 $shared_libraries $BRANCH_COV_ARGS $LLVM_COV_COMMON_ARGS > ${TEXTCOV_REPORT_DIR}/$target.covreport
}
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