Scripts: Add a script to find kernel panics (#422)

Adds a simple script to find kernel panics in the integration serial
console logs. We're tracking down one related to Swift's Mutex.

scripts/check-integration-test-vm-panics.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+# Copyright © 2025 Apple Inc. and the Containerization project authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+# Script to scan the VM boot logs from the integration tests for kernel panics.
+# Looks for common kernel panic messages like "attempted to kill init" or "Kernel panic".
+
+GIT_ROOT=$(git rev-parse --show-toplevel 2>/dev/null)
+if [ -z "$GIT_ROOT" ]; then
+    echo "Error: Not in a git repository"
+    exit 1
+fi
+
+BOOT_LOGS_DIR="$GIT_ROOT/bin/integration-bootlogs"
+
+if [ ! -d "$BOOT_LOGS_DIR" ]; then
+    echo "Error: Boot logs directory not found: $BOOT_LOGS_DIR"
+    exit 1
+fi
+
+echo "Scanning boot logs in: $BOOT_LOGS_DIR"
+echo "========================================"
+echo ""
+
+PANIC_FOUND=0
+
+for logfile in "$BOOT_LOGS_DIR"/*; do
+    if [ -f "$logfile" ]; then
+        if grep -qi "attempted to kill init\|Kernel panic\|end Kernel panic\|Attempted to kill the idle task\|Oops:" "$logfile"; then
+            echo "🚨 PANIC DETECTED in: $(basename "$logfile")"
+            echo "---"
+            grep -i -B 5 -A 10 "attempted to kill init\|Kernel panic\|end Kernel panic\|Attempted to kill the idle task\|Oops:" "$logfile" | head -30
+            echo ""
+            echo "========================================"
+            echo ""
+            PANIC_FOUND=1
+        fi
+    fi
+done
+
+if [ $PANIC_FOUND -eq 0 ]; then
+    echo "✅ No kernel panics detected in boot logs"
+else
+    echo "❌ Found kernel panics - Virtual machine(s) crashed during integration tests"
+fi
+
+exit $PANIC_FOUND