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Message-ID: <20160406205429.GA13901@kroah.com>
Date: Wed, 6 Apr 2016 13:54:29 -0700
From: Greg KH <gregkh@...uxfoundation.org>
To: kernel-hardening@...ts.openwall.com
Cc: Christoph Lameter <cl@...ux.com>, Pekka Enberg <penberg@...nel.org>,
David Rientjes <rientjes@...gle.com>,
Joonsoo Kim <iamjoonsoo.kim@....com>,
Andrew Morton <akpm@...ux-foundation.org>, gthelen@...gle.com,
keescook@...omium.org, linux-kernel@...r.kernel.org,
linux-mm@...ck.org, labbott@...oraproject.org,
Thomas Garnier <thgarnie@...gle.com>
Subject: Re: [RFC v1] mm: SLAB freelist randomization
On Wed, Apr 06, 2016 at 12:35:48PM -0700, Thomas Garnier wrote:
> Provide an optional config (CONFIG_FREELIST_RANDOM) to randomize the
> SLAB freelist. This security feature reduces the predictability of
> the kernel slab allocator against heap overflows.
>
> Randomized lists are pre-computed using a Fisher-Yates shuffle and
> re-used on slab creation for performance.
> ---
> Based on next-20160405
> ---
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