diff --git a/.github/scripts/gen-build-failure-report.sh b/.github/scripts/gen-build-failure-report.sh
index fd3215fc7fe..c8336a5f7a1 100644
--- a/.github/scripts/gen-build-failure-report.sh
+++ b/.github/scripts/gen-build-failure-report.sh
@@ -24,12 +24,19 @@
 # questions.
 #
 
+# Import common utils
+. report-utils.sh
+
 GITHUB_STEP_SUMMARY="$1"
 BUILD_DIR="$(ls -d build/*)"
 
 # Send signal to the do-build action that we failed
 touch "$BUILD_DIR/build-failure"
 
+# Collect hs_errs for build-time crashes, e.g. javac, jmod, jlink, CDS.
+# These usually land in make/
+hs_err_files=$(ls make/hs_err*.log 2> /dev/null || true)
+
 (
   echo '### :boom: Build failure summary'
   echo ''
@@ -46,6 +53,20 @@ touch "$BUILD_DIR/build-failure"
   echo '</details>'
   echo ''
 
+  for hs_err in $hs_err_files; do
+    echo "<details><summary><b>View HotSpot error log: "$hs_err"</b></summary>"
+    echo ''
+    echo '```'
+    echo "$hs_err:"
+    echo ''
+    cat "$hs_err"
+    echo '```'
+    echo '</details>'
+    echo ''
+  done
+
   echo ''
   echo ':arrow_right: To see the entire test log, click the job in the list to the left. To download logs, see the `failure-logs` [artifact above](#artifacts).'
 ) >> $GITHUB_STEP_SUMMARY
+
+truncate_summary
diff --git a/.github/scripts/gen-test-results.sh b/.github/scripts/gen-test-results.sh
index 9e85eef4dc0..6c6cbaa3740 100644
--- a/.github/scripts/gen-test-results.sh
+++ b/.github/scripts/gen-test-results.sh
@@ -24,6 +24,9 @@
 # questions.
 #
 
+# Import common utils
+. report-utils.sh
+
 GITHUB_STEP_SUMMARY="$1"
 
 test_suite_name=$(cat build/run-test-prebuilt/test-support/test-last-ids.txt)
@@ -89,18 +92,6 @@ for test in $failures $errors; do
   fi
 done >> $GITHUB_STEP_SUMMARY
 
-# With many failures, the summary can easily exceed 1024 kB, the limit set by Github
-# Trim it down if so.
-summary_size=$(wc -c < $GITHUB_STEP_SUMMARY)
-if [[ $summary_size -gt 1000000 ]]; then
-  # Trim to below 1024 kB, and cut off after the last detail group
-  head -c 1000000 $GITHUB_STEP_SUMMARY | tac | sed -n -e '/<\/details>/,$ p' | tac > $GITHUB_STEP_SUMMARY.tmp
-  mv $GITHUB_STEP_SUMMARY.tmp $GITHUB_STEP_SUMMARY
-  (
-    echo ''
-    echo ':x: **WARNING: Summary is too large and has been truncated.**'
-    echo ''
-  )  >> $GITHUB_STEP_SUMMARY
-fi
-
 echo ':arrow_right: To see the entire test log, click the job in the list to the left.'  >> $GITHUB_STEP_SUMMARY
+
+truncate_summary
diff --git a/.github/scripts/report-utils.sh b/.github/scripts/report-utils.sh
new file mode 100644
index 00000000000..da5b6c04b3c
--- /dev/null
+++ b/.github/scripts/report-utils.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.  Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+function truncate_summary() {
+  # With large hs_errs, the summary can easily exceed 1024 kB, the limit set by Github
+  # Trim it down if so.
+  summary_size=$(wc -c < $GITHUB_STEP_SUMMARY)
+  if [[ $summary_size -gt 1000000 ]]; then
+    # Trim to below 1024 kB, and cut off after the last detail group
+    head -c 1000000 $GITHUB_STEP_SUMMARY | tac | sed -n -e '/<\/details>/,$ p' | tac > $GITHUB_STEP_SUMMARY.tmp
+    mv $GITHUB_STEP_SUMMARY.tmp $GITHUB_STEP_SUMMARY
+    (
+      echo ''
+      echo ':x: **WARNING: Summary is too large and has been truncated.**'
+      echo ''
+    )  >> $GITHUB_STEP_SUMMARY
+  fi
+}