linux-kernel - Re: [PATCH 3/3] overflow: add range_overflows() and range_end

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Message-ID: <202509040927.30BEE17@keescook>
Date: Thu, 4 Sep 2025 09:27:50 -0700
From: Kees Cook <kees@...nel.org>
To: Jani Nikula <jani.nikula@...el.com>
Cc: intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH 3/3] overflow: add range_overflows() and
 range_end_overflows()

On Thu, Sep 04, 2025 at 10:34:04AM +0300, Jani Nikula wrote:
> On Wed, 03 Sep 2025, Kees Cook <kees@...nel.org> wrote:
> > On Fri, Aug 29, 2025 at 08:46:01PM +0300, Jani Nikula wrote:
> >> Move the range_overflows() and range_end_overflows() along with the _t
> >> variants over from drm/i915 and drm/buddy to overflow.h.
> >> 
> >> Cc: Kees Cook <kees@...nel.org>
> >> Cc: Gustavo A. R. Silva <gustavoars@...nel.org>
> >> Cc: linux-hardening@...r.kernel.org
> >> Signed-off-by: Jani Nikula <jani.nikula@...el.com>
> >
> > Looks good to me! :)
> >
> > Reviewed-by: Kees Cook <kees@...nel.org>
> 
> Cool, thanks! How do you want to handle merging this?

Since it's touching drm, feel free to take it there. I'm not worried
about conflict resolution in overflow.h.

-- 
Kees Cook