[Bug 66726] New: [PNV Regression]IGT/gen3_render_mixed_blits cause [drm:i915_stolen_to_physical] *ERROR* conflict detected with stolen region: [0x7f800000 - 0x80000000]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66726

          Priority: high
            Bug ID: 66726
                CC: xunx.fang at intel.com, yangweix.shui at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [PNV Regression]IGT/gen3_render_mixed_blits cause
                    [drm:i915_stolen_to_physical] *ERROR* conflict
                    detected with stolen region: [0x7f800000 - 0x80000000]
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 82209
  --> https://bugs.freedesktop.org/attachment.cgi?id=82209&action=edit
dmesg

System Environment:
--------------------------
Platform:       Pineview
Kernel:         drm-intel-fixes 8bbbb45b2125a28ea1de657e7893a521b44b60c3

Bug detailed description:
-----------------------------
It happens on pineview with drm-intel-fixes kernel, It works well on
drm-intel-next-queued kernel.

The first bad commit could be any of:
035dc1e0f9008b48630e02bf0eaa7cc547416d1d
446f8d81ca2d9cefb614e87f2fabcc996a9e4e7e
15fdeefeb69a3a21fb483d1621517c2c8e0cf31a

output:
Using 768 1MiB buffers
Verifying initialisation...done
Cyclic blits, forward...verifying...done
Cyclic blits, backward...verifying...done
Random blits...verifying...done

Reproduce steps:
----------------------------
1.  ./gen3_render_mixed_blits

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