Re: [PATCH] ACPI: Fix potential NULL pointer dereference in acpi_processor_add()

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On Thu, May 30, 2013 at 03:57:58PM +0200, Rafael J. Wysocki wrote:
> On Thursday, May 30, 2013 10:29:54 AM Hanjun Guo wrote:
> > On 2013-5-29 19:07, Martin Mokrejs wrote:
> > > Hanjun Guo wrote:
> > >> On 2013-5-29 7:30, Rafael J. Wysocki wrote:
> > >>> On Thursday, May 23, 2013 08:44:26 PM Hanjun Guo wrote:
> > >>>> In acpi_processor_add(), get_cpu_device() will return NULL sometimes,
> > >>>> although the chances are small, I think it should be fixed.
> > >>>>
> > >>>> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
> > >>>
> > >>> This patch isn't necessary any more after the changes queued up for 3.11
> > >>> in the acpi-hotplug branch of the linux-pm.git tree.
> > >>
> > >> Ok, I noticed your patch set, just drop my patch.
> > > 
> > > But shouldn't this go to stable at least? I checked linux-3.9.4
> > > and it applies fine. Whether this is relevant for other stable
> > > series I will leave up to somebody else. ;)
> > 
> > Hi Rafeal,
> > 
> > What's your opinion on Martin's suggestion?
> 
> Well, this is kind of hard to say.  We generally don't apply patches to -stable
> that don't have mainline counterparts.
> 
> Greg, I wonder what your opinion is?

We do not apply patches to -stable that are not in Linus's tree, unless
there is no problem in Linus's tree due to a major rewrite of the code,
and it has been confirmed that the same problem isn't there.

thanks,

greg k-h
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