Re: [stable] PCI: acpiphp: check whether _ADR evaluation succeeded

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On Mon, 2012-10-08 at 10:37 -0600, Bjorn Helgaas wrote:
> On Mon, Oct 8, 2012 at 10:28 AM, Greg KH <greg@xxxxxxxxx> wrote:
> > On Sun, Oct 07, 2012 at 09:57:47PM +0100, Ben Hutchings wrote:
> >> Based on <https://bugzilla.kernel.org/show_bug.cgi?id=46481>, the
> >> following commit should be cherry-picked for stable series < 3.6:
> >>
> >> commit dfb117b3e50c52c7b3416db4a4569224b8db80bb
> >> Author: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> >> Date:   Wed Jun 20 16:18:29 2012 -0600
> >>
> >>     PCI: acpiphp: check whether _ADR evaluation succeeded
> >>
> >> It applies cleanly to 3.2.y and presumably also to later stable
> >> branches.  I've attached a version that applies to 2.6.32.y and 3.0.y,
> >> and presumably also to the intermediate stable branches.  Only 3.2.y has
> >> actually been tested with this, though.
> >
> > Thanks, now applied.
> 
> Has anybody looked deeper to see exactly *how* this patch fixes the
> problem?  The original reports were oopses caused by dereferencing bad
> pointers in DRM, and it's not obvious to me how this patch is
> connected to those.

Oh, I completely missed the oops log.  Yes, it does look like there's
another more serious bug still to be fixed in 3.2.y (maybe in DRM, maybe
not).

Ben.

-- 
Ben Hutchings
Who are all these weirdos? - David Bowie, about L-Space IRC channel #afp

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