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Message-ID: <CAOJsxLFsmoX777Qui_jBSsv7o0sn2wQ9tY2TeRPyv3ZFvNaRLg@mail.gmail.com>
Date: Mon, 19 Sep 2011 22:33:14 +0300
From: Pekka Enberg <penberg@...helsinki.fi>
To: Vasiliy Kulikov <segoon@...nwall.com>
Cc: 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, Sep 19, 2011 at 9:55 PM, Vasiliy Kulikov <segoon@...nwall.com> wrote:
> Is there another way to get directly or indirectly the information about
> slabs?
I didn't check closely but there seems to be some filesystem specific
stats under /proc at least. No idea how useful those are as attack
vectors.
I also suspect there are per-module knobs under /proc and /sys that
can be used to get indirect information. Many subsystems have
implemented their own slab wrappers in the past and they keep popping
up every now and then.
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