linux-kernel - Re: mmap_min_addr and your local LSM (ok, just SELinux)

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Message-ID: <20090728144854.GN15310@basil.fritz.box>
Date:	Tue, 28 Jul 2009 16:48:54 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Brad Spengler <spender@...ecurity.net>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	James Morris <jmorris@...ei.org>,
	James Carter <jwcart2@...ho.nsa.gov>,
	Eric Paris <eparis@...hat.com>, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
	Stephen Smalley <sds@...ho.nsa.gov>,
	Daniel J Walsh <dwalsh@...hat.com>, cl@...ux-foundation.org,
	Arjan van de Ven <arjan@...radead.org>, kees@...flux.net,
	Chad Sellers <csellers@...sys.com>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	mingo@...e.hu
Subject: Re: mmap_min_addr and your local LSM (ok, just SELinux)

On Tue, Jul 28, 2009 at 09:35:47AM -0400, Brad Spengler wrote:
> > If you use all available break points (making all gdb users unhappy)
> > then you could still only cover 64 bytes on 64bit, 32 on 32bit.
> 
> Might want to double-check that math I think ;)

Good catch. I was off by one bit. It's 32 / 16.
Doesn't change the result I would guess though.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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