Messages in this thread | | | Date | Thu, 26 Aug 2010 15:10:17 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] percpu: fix a memory leak in pcpu_extend_area_map() |
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On Sun, 08 Aug 2010 14:42:57 +0200 Tejun Heo <tj@kernel.org> wrote:
> >From 206c53730b8b1707becca7a868ea8d14ebee24d2 Mon Sep 17 00:00:00 2001 > From: Huang Shijie <shijie8@gmail.com> > Date: Sun, 8 Aug 2010 14:39:07 +0200 > > The original code did not free the old map. This patch fixes it. > > tj: use @old as memcpy source instead of @chunk->map, and indentation > and description update > > Signed-off-by: Huang Shijie <shijie8@gmail.com> > Signed-off-by: Tejun Heo <tj@kernel.org>
Should have had a cc:stable in the changelog, IMO.
> --- > Patch applied to percpu#for-linus w/ some updates. Thanks a lot for > catching this. >
This patch appears to have been lost?
> diff --git a/mm/percpu.c b/mm/percpu.c > index e61dc2c..a1830d8 100644 > --- a/mm/percpu.c > +++ b/mm/percpu.c > @@ -393,7 +393,9 @@ static int pcpu_extend_area_map(struct pcpu_chunk *chunk, int new_alloc) > goto out_unlock; > > old_size = chunk->map_alloc * sizeof(chunk->map[0]); > - memcpy(new, chunk->map, old_size); > + old = chunk->map; > + > + memcpy(new, old, old_size); > > chunk->map_alloc = new_alloc; > chunk->map = new;
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