Re: [PATCH] tmpfs: fix shared mempolicy leak

From: Tommi Rantala
Date: Wed Dec 05 2012 - 15:25:43 EST

2012/12/5 Mel Gorman <mgorman@xxxxxxx>:
> On Tue, Dec 04, 2012 at 11:24:30PM -0800, Hugh Dickins wrote:
>> From: Mel Gorman <mgorman@xxxxxxx>
>> Commit 00442ad04a5e ("mempolicy: fix a memory corruption by refcount
>> imbalance in alloc_pages_vma()") changed get_vma_policy() to raise the
>> refcount on a shmem shared mempolicy; whereas shmem_alloc_page() went
>> on expecting alloc_page_vma() to drop the refcount it had acquired.
>> This deserves a rework: but for now fix the leak in shmem_alloc_page().
> Thanks Hugh for turning gibber into a patch!
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
> Tommi, just in case, can you confirm this fixes the problem for you please?

Confirmed! No more complaints from kmemleak.

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