linux-kernel - Re: [PATCH] security: unconditionally call Yama

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Message-ID: <20120831223908.4aa5574d@pyramind.ukuu.org.uk>
Date:	Fri, 31 Aug 2012 22:39:08 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Kees Cook <keescook@...omium.org>
Cc:	linux-kernel@...r.kernel.org,
	James Morris <james.l.morris@...cle.com>,
	Eric Paris <eparis@...hat.com>, Jiri Kosina <jkosina@...e.cz>,
	John Johansen <john.johansen@...onical.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH] security: unconditionally call Yama

On Fri, 31 Aug 2012 14:31:26 -0700
Kees Cook <keescook@...omium.org> wrote:

> Unconditionally call Yama, no matter what LSM module is selected.
> 
> Ubuntu and Chrome OS already carry patches to do this, and Fedora has
> voiced interest in doing this as well. Instead of having everyone carry
> these patches, just switch Yama to being unconditional when compiled
> into the kernel.

Not a good plan. What happens when everyone decides to stack every module
by ifdeffing in the kernel - mayhem. I'm all for it being possible but
done right - espeicall as I believe a proper proposal now for stacking
modules, and it should be done as part of that.

Alan
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