linux-hardening - Re: [PATCH 3/6] PKEY: Apply PKEY_ENFORCE

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Message-ID: <202305161307.77B29D261@keescook>
Date:   Tue, 16 May 2023 13:07:39 -0700
From:   Kees Cook <keescook@...omium.org>
To:     jeffxu@...omium.org
Cc:     dave.hansen@...el.com, luto@...nel.org, jorgelo@...omium.org,
        groeck@...omium.org, jannh@...gle.com, sroettger@...gle.com,
        akpm@...ux-foundation.org, jeffxu@...gle.com,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-mm@...ck.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH 3/6] PKEY: Apply PKEY_ENFORCE_API to mprotect

On Mon, May 15, 2023 at 01:05:49PM +0000, jeffxu@...omium.org wrote:
> From: Jeff Xu <jeffxu@...gle.com>
> 
> This patch enables PKEY_ENFORCE_API for the mprotect and
> mprotect_pkey syscalls.

All callers are from userspace -- this change looks like a no-op?

-Kees

-- 
Kees Cook