linux-kernel - Re: [PATCH] x86/uaccess: Zero the 8-byte get

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Message-ID: <87frro2h94.ffs@tglx>
Date: Thu, 01 Aug 2024 21:08:23 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>, David Gow
 <davidgow@...gle.com>
Cc: Kees Cook <kees@...nel.org>, Borislav Petkov <bp@...en8.de>, Ingo Molnar
 <mingo@...hat.com>, Dave Hansen <dave.hansen@...ux.intel.com>, Peter
 Zijlstra <peterz@...radead.org>, Andrew Morton
 <akpm@...ux-foundation.org>, "H . Peter Anvin" <hpa@...or.com>,
 x86@...nel.org, kunit-dev@...glegroups.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/uaccess: Zero the 8-byte get_range case on failure

On Thu, Aug 01 2024 at 09:24, Linus Torvalds wrote:
> On Wed, 31 Jul 2024 at 23:35, David Gow <davidgow@...gle.com> wrote:
> But I'm also not going to argue that this is really worth pursuing on
> 32-bit if anybody is in the least worried.
>
> It's on life support, not like it's actively maintained. Your original
> patch may not be exactly "pretty", but it clearly fixes the problem
> without playing any games.

I queue that oe up and if someone really cares, then it can be updated,
but I doubt it's worth the trouble.

Thanks,

        tglx