i915 modeset memory corruption issues? (Fwd: Oops in ext3_block_to_path.isra.40+0x26/0x11b)

[Hugh Dickins]

On Sun, 18 Mar 2012, Rafael J. Wysocki wrote:
> On Sunday, March 18, 2012, Hugh Dickins wrote:
> > On Sat, 17 Mar 2012, Keith Packard wrote:
> > > On Sat, 17 Mar 2012 18:44:18 -0700 (PDT), Hugh Dickins <hughd at google.com> wrote:
> > > > I keep worrying about the sequence when the machine is powered on again
> > > > after hibernation: can i915 get up to anything before it is resumed from
> > > > the hibernation image?
...
> 
> Well, pretty much the only explanation of the observed symptoms I can imagine
> is some kind of "leakage" of the boot kernel's memory mappings through the
> graphics adapter into the post-restore system.

Thanks for your detailed confirmations, Rafael.  I see from other threads
that pretty much everyone has now converged upon this hypothesis - which
perhaps I read first elsewhere, forgot, and then thought it my idea!
I'll leave it to the i915 experts: good luck in tracking it down.

Hugh