linux-kernel - [PATCH v3 18/19] tools/ksw: add test script

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Message-ID: <20250910053147.1152253-10-wangjinchao600@gmail.com>
Date: Wed, 10 Sep 2025 13:31:16 +0800
From: Jinchao Wang <wangjinchao600@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mike Rapoport <rppt@...nel.org>,
	"Naveen N . Rao" <naveen@...nel.org>,
	Andrey Ryabinin <ryabinin.a.a@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Andrey Konovalov <andreyknvl@...il.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Vincenzo Frascino <vincenzo.frascino@....com>,
	kasan-dev@...glegroups.com,
	"David S. Miller" <davem@...emloft.net>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	linux-mm@...ck.org,
	linux-trace-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Jinchao Wang <wangjinchao600@...il.com>
Subject: [PATCH v3 18/19] 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