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Date: Thu, 14 Jul 2016 20:07:01 +1000
From: Michael Ellerman <>
To: Kees Cook <>,
Cc: Kees Cook <>, Rik van Riel <>, Casey Schaufler <>, PaX Team <>, Brad Spengler <>, Russell King <>, Catalin Marinas <>, Will Deacon <>, Ard Biesheuvel <>, Benjamin Herrenschmidt <>, Tony Luck <>, Fenghua Yu <>, "David S. Miller" <>,, Christoph Lameter <>, Pekka Enberg <>, David Rientjes <>, Joonsoo Kim <>, Andrew Morton <>, Andy Lutomirski <>, Borislav Petkov <>, Mathias Krause <>, Jan Kara <>, Vitaly Wool <>, Andrea Arcangeli <>, Dmitry Vyukov <>, Laura Abbott <>, lin,,,,,,
Subject: Re: [PATCH v2 11/11] mm: SLUB hardened usercopy support

Kees Cook <> writes:

> Under CONFIG_HARDENED_USERCOPY, this adds object size checking to the
> SLUB allocator to catch any copies that may span objects. Includes a
> redzone handling fix from Michael Ellerman.

Actually I think you wrote the fix, I just pointed you in that
direction. But anyway, this works for me, so if you like:

Tested-by: Michael Ellerman <>


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