On Mon, Dec 12, 2011 at 10:16, Rocko Requin <rockorequin at hotmail.com> wrote: >> If you can wire up netconsole you should be able to gather the full >> backtrace and that would be really useful. Otherwise can you please >> confirm by reverting that commit from your current tree that it is >> indeed the culprit? Otherwise please bisect the issue. > > I built 3.2-rc5 with the patch from commit > eb1711bb94991e93669c5a1b5f84f11be2d51ea1 reversed, and have been using it > now for a day and a half without any i915_gem issues. So at this stage it > does seem likely it is the culprit, based on the fact that I had at least 2 > and probably 3 i915_gem crashes in around 12 hours with the commit applied. > When I get some free time I'll reapply the patch and see if I can reproduce > the crash and get a netconsole dump. Backtraces from another reporter seriously look like we're hitting some ugly use-after free. Can you please test whether the patch "drm/i915: Only clear the GPU domains upon a successful finish" by Chris Wilson fixes anything for you? You can grab it from http://cgit.freedesktop.org/~danvet/drm/patch/?id=389a55581e30607af0fcde6cdb4e54f189cf46cf Thanks, Daniel -- Daniel Vetter daniel.vetter at ffwll.ch - +41 (0) 79 365 57 48 - http://blog.ffwll.ch
