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

[Mikael Pettersson]

Johannes Weiner writes:
 > 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>
 > CC: Roel Kluin <12o3l@xxxxxxxxxx>
 > CC: Andreas Schwab <schwab@xxxxxxx>
 > CC: Matt Mackall <mpm@xxxxxxxxxxx>
 > CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

Thanks, v2 looks much nicer.

Acked-by: Mikael Pettersson <mikpe@xxxxxxxx>
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