linux-kernel - Re: [PATCH 1/3] x86: fix access_ok() and valid_user_address() using wrong USER_PTR

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Message-ID: <CAHk-=whu7aVmk8zwwhh9+2Okx6aGKFUrY7CKEWK_RLieGizuKA@mail.gmail.com>
Date: Wed, 5 Nov 2025 10:50:21 +0900
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Borislav Petkov <bp@...en8.de>
Cc: Mateusz Guzik <mjguzik@...il.com>, "the arch/x86 maintainers" <x86@...nel.org>, brauner@...nel.org, 
	viro@...iv.linux.org.uk, jack@...e.cz, linux-kernel@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, tglx@...utronix.de, pfalcato@...e.de
Subject: Re: [PATCH 1/3] x86: fix access_ok() and valid_user_address() using
 wrong USER_PTR_MAX in modules

On Wed, 5 Nov 2025 at 01:14, Borislav Petkov <bp@...en8.de> wrote:
>
> Did a deeper look, did randbuilds, boots fine on a couple of machines, so all
> good AFAIIC.
>
> I sincerely hope that helps.

I pushed it out with a proper commit message etc. It might not be an
acute bug right now, but I do want it fixed in 6.18, so that when
Thomas' new scoped accessors get merged - and maybe cause the whole
inlining pattern to be much more commonly used - this is all behind
us.

And the patch certainly _looks_ ObviouslyCorrect(tm). Famous last words.

                Linus