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Mon, 10 Nov 2025 08:38:33 -0800 (PST) From: Jinchao Wang To: Andrew Morton , "Masami Hiramatsu (Google)" , Peter Zijlstra , Randy Dunlap , Marco Elver , Mike Rapoport , Alexander Potapenko , Adrian Hunter , Alexander Shishkin , Alice Ryhl , Andrey Konovalov , Andrey Ryabinin , Andrii Nakryiko , Ard Biesheuvel , Arnaldo Carvalho de Melo , Ben Segall , Bill Wendling , Borislav Petkov , Catalin Marinas , Dave Hansen , David Hildenbrand , David Kaplan , "David S. Miller" , Dietmar Eggemann , Dmitry Vyukov , "H. Peter Anvin" , Ian Rogers , Ingo Molnar , James Clark , Jinchao Wang , Jinjie Ruan , Jiri Olsa , Jonathan Corbet , Juri Lelli , Justin Stitt , kasan-dev@googlegroups.com, Kees Cook , "Liam R. Howlett" , "Liang Kan" , Linus Walleij , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, llvm@lists.linux.dev, Lorenzo Stoakes , Mark Rutland , Masahiro Yamada , Mathieu Desnoyers , Mel Gorman , Michal Hocko , Miguel Ojeda , Nam Cao , Namhyung Kim , Nathan Chancellor , Naveen N Rao , Nick Desaulniers , Rong Xu , Sami Tolvanen , Steven Rostedt , Suren Baghdasaryan , Thomas Gleixner , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Valentin Schneider , Vincent Guittot , Vincenzo Frascino , Vlastimil Babka , Will Deacon , workflows@vger.kernel.org, x86@kernel.org Subject: [PATCH v8 25/27] tools/ksw: add arch-specific test script Date: Tue, 11 Nov 2025 00:36:20 +0800 Message-ID: <20251110163634.3686676-26-wangjinchao600@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251110163634.3686676-1-wangjinchao600@gmail.com> References: <20251110163634.3686676-1-wangjinchao600@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: A253D140006 X-Stat-Signature: or3yx9azy96b7mb35o5c3fgzuursirox X-Rspam-User: X-HE-Tag: 1762792715-82918 X-HE-Meta: U2FsdGVkX18UctDXA3jThi3phmWQz/MChK+apXJ0+M+HUaCzpQj/u8rOWR6N6+k0uXheLR1ihkx3HwZzT9vNAiblAwYlP0q1I7Jtc4iwbbiZeGLE0o435Ndoczt0z39fnPbiLkY70IrXAo+Irg9SxgxTWpQErT0lJzw7kjt7wsxhBs66w8Y+foFzOqJ5UwWxvhqBk6FGCYvD7jr6P6eYOe0TBzRidGvQq+dHz1AW47BUAPpDwpTd+Sv9DV0IL/wC/CjFavzRrtSIBRWbFrozAWBX9sUEA+vGqHddTxvEjVdpoz4hdaf1oQcT5hTDNPZ1aXdBvPpwW1rTl4rsXULTjKTXYoMNe5uNPqjY+v3Nqw+KNnFv4b7LCBlUrditU9EVC1qjp87DmAco432apBOu/5Za3nVkmnUkQ8WRjenBLucfFGB6RTzNuGa1CH93yJibFi0s0Hq0BhlhrWBPjImLqC36Q17xC4zEQGpp1n02FyVcVNuXskD3XxWfnUfv/f4da+/UbSSddSfGrGGHL5UR+mgV/s1vR58ZB/nFynrBO9zAKJEA7dwtBKwZgr7EnDbBwODmT9ooNJh9AAYrWyC7j/Q/zKM+mU24JRXvK+T1fEP8I+lH8snTOXlsh22GU4fvhk4Z9u9QSUmWNtqY0wqPRGyH3WgyrvbR7FjgpkmeW43oRRa0YtSnCmrmN1KLTwSEsiK+ac2ZXT0ndwscUHXFUqgpcqc/1TUqkmoTX/c9Q9OIelc5Igk1wieKxOnC4sfYEtYK9QRPYZ/S0vRsK/uWUg0Dg8KVol4SQK5wMSwh8Hvr5ouqdlIVhKasso1K+2mNvbspiCCRKk98GrssOFO6tHwjwmXMiMOwGYaK+7ejdFr6qFBZsBZzsCLtrJNGj4QFk2XXr5QULXs+UkGgOCzJIFjqW4gS/Tu8Z2EXquu4OLwVG1XftEnE6RhEFRweTvGceRczXgabuuwtJsq6tAX Devi3H5A K4NtKwq7NUu2fEsWmZwa9jOiDM6zJRiFPAI4edBFQOkMtyCJMGSdSSFuziJHeEd+2G/6mVOdjC8vd3KHHFlYwu2AuNUFFkP0pdt2e9NeUWL66XA1om307W2bpgZ4Z/+65spogBIG62EhHAiOMJQMCPl8ng/wjhtOer16+tbzv4aqJklVHHLwm0k2ZNldk/hNqfsNHqDGF2Ci6CEKrUP+7tqsoF4LOIJ6SWlo6Ep8HrjHY33ScRj+gQd6CwYBMPJnrxw3pMBjfx0W59GsUCLE60hvhiHmQKiGke4/cVKlcawJ/NtmLmg0wA9b1ddzRIfXUO6h+uLINTwodbRiyXgqglZOOxlWYPDc31V2S/UPcFsZrkkgKKQPojKMX3maSb20sAMMWAwKBAHQn46gdWYzlRZqQQqxu798qqP2WZLimgTCcKGGupSpQwKa5jgOGtwaRHzFC88tfh1sCnS1Ht5Hxn6YTJOlfyhPlSNl3X1fI51TrWPkSDbH3YiAIdcdsT6PZdzu+VMLWeH5kw/Ra5z/pQp/hCjx/iu6ZM+hOQcf7urjwHHP92G0obe1QvA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Add a shell script under tools/kstackwatch to run self-tests such as canary overflow and recursive depth. The script supports both x86_64 and arm64, selecting parameters automatically based on uname -m. Signed-off-by: Jinchao Wang --- tools/kstackwatch/kstackwatch_test.sh | 85 +++++++++++++++++++++++++++ 1 file changed, 85 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..6e83397d3213 --- /dev/null +++ b/tools/kstackwatch/kstackwatch_test.sh @@ -0,0 +1,85 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +echo "IMPORTANT: Before running, make sure you have updated the config values!" + +usage() { + echo "Usage: $0 [0-5]" + echo " 0 - test watch fire" + echo " 1 - test canary overflow" + echo " 2 - test recursive depth" + echo " 3 - test silent corruption" + echo " 4 - test multi-threaded silent corruption" + echo " 5 - test multi-threaded overflow" +} + +run_test_x86_64() { + local test_num=$1 + case "$test_num" in + 0) echo fn=test_watch_fire fo=0x29 ac=1 >/sys/kernel/debug/kstackwatch/config + echo test0 > /sys/kernel/debug/kstackwatch/test + ;; + 1) echo fn=test_canary_overflow fo=0x14 >/sys/kernel/debug/kstackwatch/config + echo test1 >/sys/kernel/debug/kstackwatch/test + ;; + 2) echo fn=test_recursive_depth fo=0x2f dp=3 wl=8 so=0 >/sys/kernel/debug/kstackwatch/config + echo test2 >/sys/kernel/debug/kstackwatch/test + ;; + 3) echo fn=test_mthread_victim fo=0x4c so=64 wl=8 >/sys/kernel/debug/kstackwatch/config + echo test3 >/sys/kernel/debug/kstackwatch/test + ;; + 4) echo fn=test_mthread_victim fo=0x4c so=64 wl=8 >/sys/kernel/debug/kstackwatch/config + echo test4 >/sys/kernel/debug/kstackwatch/test + ;; + 5) echo fn=test_mthread_buggy fo=0x16 so=0x100 wl=8 >/sys/kernel/debug/kstackwatch/config + echo test5 >/sys/kernel/debug/kstackwatch/test + ;; + *) usage + exit 1 ;; + esac + # Reset watch after test + echo >/sys/kernel/debug/kstackwatch/config +} + +run_test_arm64() { + local test_num=$1 + case "$test_num" in + 0) echo fn=test_watch_fire fo=0x50 ac=1 >/sys/kernel/debug/kstackwatch/config + echo test0 > /sys/kernel/debug/kstackwatch/test + ;; + 1) echo fn=test_canary_overflow fo=0x20 so=264 >/sys/kernel/debug/kstackwatch/config + echo test1 >/sys/kernel/debug/kstackwatch/test + ;; + 2) echo fn=test_recursive_depth fo=0x34 dp=3 wl=8 so=8 >/sys/kernel/debug/kstackwatch/config + echo test2 >/sys/kernel/debug/kstackwatch/test + ;; + 3) echo fn=test_mthread_victim fo=0x6c so=0x48 wl=8 >/sys/kernel/debug/kstackwatch/config + echo test3 >/sys/kernel/debug/kstackwatch/test + ;; + 4) echo fn=test_mthread_victim fo=0x6c so=0x48 wl=8 >/sys/kernel/debug/kstackwatch/config + echo test4 >/sys/kernel/debug/kstackwatch/test + ;; + 5) echo fn=test_mthread_buggy fo=0x20 so=264 >/sys/kernel/debug/kstackwatch/config + echo test5 >/sys/kernel/debug/kstackwatch/test + ;; + *) usage + exit 1 ;; + esac + # Reset watch after test + echo >/sys/kernel/debug/kstackwatch/config +} + +# Check root and module +[ "$EUID" -ne 0 ] && echo "Run as root" && exit 1 +for f in /sys/kernel/debug/kstackwatch/config /sys/kernel/debug/kstackwatch/test; do + [ ! -f "$f" ] && echo "$f not found" && exit 1 +done + +# Run +[ -z "$1" ] && { usage; exit 0; } + +arch=$(uname -m) +case "$arch" in + x86_64|aarch64) run_test_${arch} "$1" ;; + *) echo "Unsupported architecture: $arch" && exit 1 ;; +esac -- 2.43.0