https://bugs.freedesktop.org/show_bug.cgi?id=36602
--- Comment #14 from Sven Arvidsson sa@whiz.se 2011-08-05 08:17:12 PDT --- (In reply to comment #13)
It seems kernel patch (0001-drm-radeon-kms-add-htile-support-to-the-cs-checker.patch) is missing.
Hmm, I rebuilt the kernel a second time and have made sure the patch is applied and I'm still getting the same error.