linux-kernel - [PATCH v4 19/21] tools/ksw: add test script

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Message-ID: <20250912101145.465708-20-wangjinchao600@gmail.com>
Date: Fri, 12 Sep 2025 18:11:29 +0800
From: Jinchao Wang <wangjinchao600@...il.com>
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Cc: Jinchao Wang <wangjinchao600@...il.com>
Subject: [PATCH v4 19/21] tools/ksw: add test script

Provide a shell script to trigger test cases.

Signed-off-by: Jinchao Wang <wangjinchao600@...il.com>
---
 tools/kstackwatch/kstackwatch_test.sh | 40 +++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100755 tools/kstackwatch/kstackwatch_test.sh

diff --git a/tools/kstackwatch/kstackwatch_test.sh b/tools/kstackwatch/kstackwatch_test.sh
new file mode 100755
index 000000000000..61e171439ab6
--- /dev/null
+++ b/tools/kstackwatch/kstackwatch_test.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+echo "IMPORTANT: Before running, make sure you have updated the offset values!"
+
+usage() {
+	echo "Usage: $0 [0-3]"
+	echo "  0  - Canary Write Test"
+	echo "  1  - Canary Overflow Test"
+	echo "  2  - Silent Corruption Test"
+	echo "  3  - Recursive Corruption Test"
+}
+
+run_test() {
+	local test_num=$1
+	case "$test_num" in
+	0) echo "canary_test_write+0x19" >/proc/kstackwatch
+	   echo "test0" >/proc/kstackwatch_test ;;
+	1) echo "canary_test_overflow+0x1a" >/proc/kstackwatch
+	   echo "test1" >/proc/kstackwatch_test ;;
+	2) echo "silent_corruption_victim+0x32 0:8" >/proc/kstackwatch
+	   echo "test2" >/proc/kstackwatch_test ;;
+	3) echo "recursive_corruption_test+0x21+3 0:8" >/proc/kstackwatch
+	   echo "test3" >/proc/kstackwatch_test ;;
+	*) usage
+	   exit 1 ;;
+	esac
+	# Reset watch after test
+	echo >/proc/kstackwatch
+}
+
+# Check root and module
+[ "$EUID" -ne 0 ] && echo "Run as root" && exit 1
+for f in /proc/kstackwatch /proc/kstackwatch_test; do
+	[ ! -f "$f" ] && echo "$f not found" && exit 1
+done
+
+# Run
+[ -z "$1" ] && { usage; exit 0; }
+run_test "$1"
-- 
2.43.0