linux-kernel - Re: [PATCH] x86/mm: Refuse W^X violations

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Message-ID: <202208251113.B5AFA6D@keescook>
Date:   Thu, 25 Aug 2022 11:16:12 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Dave Hansen <dave.hansen@...el.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] x86/mm: Refuse W^X violations

On Thu, Aug 25, 2022 at 02:23:31PM +0200, Peter Zijlstra wrote:
> x86 has STRICT_*_RWX, but not even a warning when someone violates it.

Yes please. I assume this is only kernel pages? Doing this globally is
nice too, but runs into annoying problems[1].

-Kees

[1] https://lore.kernel.org/all/20220701130444.2945106-1-ardb@kernel.org/

-- 
Kees Cook