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Date: Mon, 5 Dec 2011 19:15:49 +0100 From: Markus Trippelsdorf <markus@...ppelsdorf.de> To: Jerome Glisse <j.glisse@...il.com> Cc: Dave Airlie <airlied@...il.com>, Christoph Lameter <cl@...ux.com>, "Alex, Shi" <alex.shi@...el.com>, Eric Dumazet <eric.dumazet@...il.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, dri-devel@...ts.freedesktop.org, Pekka Enberg <penberg@...nel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, Matt Mackall <mpm@...enic.com>, tj@...nel.org, Alex Deucher <alexander.deucher@....com> Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413 On 2011.12.05 at 12:10 -0500, Jerome Glisse wrote: > On Sun, Dec 04, 2011 at 02:02:00AM +0100, Markus Trippelsdorf wrote: > > On 2011.12.03 at 14:31 -0500, Jerome Glisse wrote: > > > On Sat, Dec 3, 2011 at 7:29 AM, Markus Trippelsdorf > > > <markus@...ppelsdorf.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. > > > > > > > > > > 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...) > > > > Can you try if attached patch fix the issue when you don't pass the > radeon.no_wb=1 option ? Yes the patch finally fixes the issue for me (tested with 120 kexec iterations). Thanks Jerome! -- Markus -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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