Re: [PATCH v2] mm: Fix possible off-by-one in walk_pte_range()

[Matt Mackall]

On Tue, 2008-04-15 at 18:16 +0200, Johannes Weiner wrote:
> From: Johannes Weiner <hannes@xxxxxxxxxxxx>
> 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@xxxxxxxxxxxx>

Acked-by: Matt Mackall <mpm@xxxxxxxxxxx>

-- 
Mathematics is the supreme nostalgia of our time.

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