netdev - Re: [PATCH net-next] modules: allow modprobe load regular elf binaries

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Date:   Fri, 09 Mar 2018 13:35:09 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     torvalds@...ux-foundation.org
Cc:     ast@...com, luto@...capital.net, keescook@...omium.org,
        ast@...nel.org, tixxdz@...il.com, viro@...iv.linux.org.uk,
        daniel@...earbox.net, gregkh@...uxfoundation.org,
        mcgrof@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com,
        linux-api@...r.kernel.org
Subject: Re: [PATCH net-next] modules: allow modprobe load regular elf
 binaries

From: Linus Torvalds <torvalds@...ux-foundation.org>
Date: Fri, 9 Mar 2018 10:17:42 -0800

>  - use deny_write_access() to make sure that we don't have active
> writers and cannot get them during the execve.

I agree that this is necessary for image validation purposes.