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Date: Sun, 4 Dec 2011 02:02:00 +0100
From: Markus Trippelsdorf <markus@trippelsdorf.de>
To: Jerome Glisse <j.glisse@gmail.com>
Cc: Dave Airlie <airlied@gmail.com>, Christoph Lameter <cl@linux.com>,
        "Alex, Shi" <alex.shi@intel.com>,
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        Alex Deucher <alexander.deucher@amd.com>
Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413
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On 2011.12.03 at 14:31 -0500, Jerome Glisse wrote:
> On Sat, Dec 3, 2011 at 7:29 AM, Markus Trippelsdorf
> <markus@trippelsdorf.de> wrote:
> > On 2011.12.03 at 12:20 +0000, Dave Airlie wrote:
> >> >> > > > > FIX idr_layer_cache: Marking all objects used
> >> >> > > >
> >> >> > > > Yesterday I couldn't reproduce the issue at all. But today I've hit
> >> >> > > > exactly the same spot again. (CCing the drm list)
> >>
> >> If I had to guess it looks like 0 is getting written back to some
> >> random page by the GPU maybe, it could be that the GPU is in some half
> >> setup state at boot or on a reboot does it happen from a cold boot or
> >> just warm boot or kexec?
> >
> > Only happened with kexec thus far. Cold boot seems to be fine.
> >
> > --
> > Markus
> 
> Can you add radeon.no_wb=1 to your kexec kernel paramater an see if
> you can reproduce.

No, I cannot reproduce the issue with radeon.no_wb=1. (I write this
after 700 successful kexec iterations...)

-- 
Markus