[PATCH v3 -next 1/9] DMA, CMA: fix possible memory leak

Joonsoo Kim
2014-06-17T01:33:50Z

On Mon, Jun 16, 2014 at 03:27:19PM +0900, Minchan Kim wrote:
> Hi, Joonsoo
>
> On Mon, Jun 16, 2014 at 02:40:43PM +0900, Joonsoo Kim wrote:
> > We should free memory for bitmap when we find zone mis-match,
> > otherwise this memory will leak.
> >
> > Additionally, I copy code comment from PPC KVM's CMA code to inform
> > why we need to check zone mis-match.
> >
> > * Note
> > Minchan suggested to add a tag for the stable, but, I don't do it,
> > because I found this possibility during code-review and, IMO,
> > this patch isn't suitable for stable tree.
>
> Nice idea to put the comment in here. Thanks Joonsoo.
>
> It seems you obey "It must fix a real bug that bothers people"
> on Documentation/stable_kernel_rules.txt but it's a really obvious
> bug and hard to get a report from people because limited user and
> hard to detect small such small memory leak.
>
> In my experince, Andrew perfered stable marking for such a obvious
> problem but simple fix like this but not sure so let's pass the decision
> to him and will learn a lesson from him and will follow the decision
> from now on.

Yes, I intended to pass the decision to others. :)

>
> Thanks.
>
> Acked-by: Minchan Kim <minchan@kernel.org>

Thanks.