linux-kernel - Re: [PATCH v2] mm: Fix possible off-by-one in walk_pte

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Message-Id: <1208295296.616.1.camel@calx>
Date:	Tue, 15 Apr 2008 14:34:56 -0700
From:	Matt Mackall <mpm@...enic.com>
To:	Johannes Weiner <hannes@...urebad.de>
Cc:	Mikael Pettersson <mikpe@...uu.se>,
	LKML <linux-kernel@...r.kernel.org>,
	Roel Kluin <12o3l@...cali.nl>, Andreas Schwab <schwab@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2] mm: Fix possible off-by-one in walk_pte_range()

On Tue, 2008-04-15 at 18:16 +0200, Johannes Weiner wrote:
> From: Johannes Weiner <hannes@...urebad.de>
> Subject: [PATCH] mm: Fix possible off-by-one in walk_pte_range()
> 
> After the loop in walk_pte_range() pte might point to the first address
> after the pmd it walks.  The pte_unmap() is then applied to something
> bad.
> 
> Spotted by Roel Kluin and Andreas Schwab.
> 
> Signed-off-by: Johannes Weiner <hannes@...urebad.de>

Acked-by: Matt Mackall <mpm@...enic.com>

-- 
Mathematics is the supreme nostalgia of our time.

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