Date: Mon, 19 Sep 2011 15:02:34 -0500 (CDT) From: Christoph Lameter <cl@...two.org> To: Valdis.Kletnieks@...edu cc: Vasiliy Kulikov <segoon@...nwall.com>, 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: Re: [RFC PATCH 2/2] mm: restrict access to /proc/slabinfo On Mon, 19 Sep 2011, Valdis.Kletnieks@...edu wrote: > On Mon, 19 Sep 2011 12:51:10 CDT, Christoph Lameter said: > > > IMHO a restriction of access to slab statistics is reasonable in a > > hardened environment. Make it dependent on CONFIG_SECURITY or some such > > thing? > > Probably need to invent a separate Kconfig variable - CONFIG_SECURITY > is probably a way-too-big hammer for this nail. I can see lots of systems > that want to enable that, but won't want to tighten access to slab. There is already CONFIG_SECURITY_DMESG_RESTRICT. Generalize that setting to include all sorts of other kernel statistics?
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