linux-kernel - Re: [PATCH v5 04/23] mm/ksw: add build system support

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Message-ID: <3504b378-4360-4e55-b28d-74aabd4308d7@infradead.org>
Date: Wed, 24 Sep 2025 10:06:10 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: Jinchao Wang <wangjinchao600@...il.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Masami Hiramatsu <mhiramat@...nel.org>, Peter Zijlstra
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 linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH v5 04/23] mm/ksw: add build system support

On 9/24/25 4:50 AM, Jinchao Wang wrote:
> Add Kconfig and Makefile infrastructure.
> 
> The implementation is located under `mm/kstackwatch/`.
> 
> Signed-off-by: Jinchao Wang <wangjinchao600@...il.com>
> ---
>  mm/Kconfig.debug             |  8 ++++++++
>  mm/Makefile                  |  1 +
>  mm/kstackwatch/Makefile      |  2 ++
>  mm/kstackwatch/kernel.c      | 23 +++++++++++++++++++++++
>  mm/kstackwatch/kstackwatch.h |  5 +++++
>  mm/kstackwatch/stack.c       |  1 +
>  mm/kstackwatch/watch.c       |  1 +
>  7 files changed, 41 insertions(+)
>  create mode 100644 mm/kstackwatch/Makefile
>  create mode 100644 mm/kstackwatch/kernel.c
>  create mode 100644 mm/kstackwatch/kstackwatch.h
>  create mode 100644 mm/kstackwatch/stack.c
>  create mode 100644 mm/kstackwatch/watch.c
> 
> diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
> index 32b65073d0cc..89be351c0be5 100644
> --- a/mm/Kconfig.debug
> +++ b/mm/Kconfig.debug
> @@ -309,3 +309,11 @@ config PER_VMA_LOCK_STATS
>  	  overhead in the page fault path.
>  
>  	  If in doubt, say N.
> +
> +config KSTACK_WATCH
> +	bool "Kernel Stack Watch"
> +	depends on HAVE_HW_BREAKPOINT && KPROBES && FPROBE && STACKTRACE
> +	help
> +	  A lightweight real-time debugging tool to detect stack corrupting.

	                                                         corruption.

> +
> +	  If unsure, say N.

-- 
~Randy