[Bug 70598] [PNV/945]igt/gen3_mixed_blits randomly causes [drm:i915_report_and_clear_eir] *ERROR* EIR stuck: 0x00000010, masking

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70598

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #5 from lu hua <huax.lu at intel.com> ---
(In reply to comment #4)
> The display state seems valid - the block that faulted is pointing to an
> uncached buffer, the scanout is not being written to by the render engine
> and there is not even a nearby Y-fence.
> 
> I think this is a WONTFIX - but lets see if we can understand the trigger a
> bit better first. Does this appear to a recent regression? Would it be
> possible to bisect?

It is not a recent regression.
Test on earlier commit, It also has this issue.
Test commit:8abbbaf6adb46157b6bd416f7616b555cc6a332f.
commit 8abbbaf6adb46157b6bd416f7616b555cc6a332f
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Wed Mar 27 21:42:00 2013 +0100

    drm: don't unlock in the addfb error paths

    We don't grab the modeset locks any more since

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