Re: 3.9.0-rc7-next: i915: render error detected

On Fri, Apr 19, 2013 at 11:16:36AM +0200, Jiri Slaby wrote:

Hi, with today's -next I got this:

[drm] capturing error event; look for more information in /sys/kernel/debug/dri/0/i915_error_state i915: render error detected, EIR: 0x00000010 i915: page table error i915: PGTBL_ER: 0x00000002 [drm:i915_report_and_clear_eir] *ERROR* EIR stuck: 0x00000010, masking i915: render error detected, EIR: 0x00000010 i915: page table error i915: PGTBL_ER: 0x00000002

These feel like they are becoming more common, though we have had reports of this style of error since the dawn of time. The error means that the CPU accessed an invalid PTE - so the most likely a missing mb or chipset flush. -Chris