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

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Message-ID: <aNSjYrXXO2BjYA87@mdev>
Date: Thu, 25 Sep 2025 10:05:22 +0800
From: Jinchao Wang <wangjinchao600@...il.com>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
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Subject: Re: [PATCH v5 04/23] mm/ksw: add build system support

On Wed, Sep 24, 2025 at 10:06:10AM -0700, Randy Dunlap wrote:
> 
> 
> 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.
Thanks, will fix in next version.
> 
> > +
> > +	  If unsure, say N.
> 
> 
> -- 
> ~Randy
> 

-- 
Jinchao