linux-kernel - Re: [kernel-hardening] Re: [RFC PATCH 2/2] mm: restrict access to /proc/slabinfo

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Message-ID: <14082.1316461507@turing-police.cc.vt.edu>
Date:	Mon, 19 Sep 2011 15:45:07 -0400
From:	Valdis.Kletnieks@...edu
To:	Vasiliy Kulikov <segoon@...nwall.com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Andrew Morton <akpm@...ux-foundation.org>,
	kernel-hardening@...ts.openwall.com, Kees Cook <kees@...ntu.com>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Dan Rosenberg <drosenberg@...curity.com>,
	Theodore Tso <tytso@....edu>, Alan Cox <alan@...ux.intel.com>,
	Jesper Juhl <jj@...osbits.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [kernel-hardening] Re: [RFC PATCH 2/2] mm: restrict access to /proc/slabinfo

On Mon, 19 Sep 2011 18:46:58 +0400, Vasiliy Kulikov said:

> One note: only to _kernel_ developers.  It means it is a strictly
> debugging feature, which shouldn't be enabled in the production systems.

Until somebody at vendor support says "What does 'cat /proc/slabinfo' say?"

Anybody who thinks that debugging tools should be totally disabled on
"production" systems probably hasn't spent enough time actually
running production systems.

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