[Bug 70598] New: [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

          Priority: medium
            Bug ID: 70598
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [PNV/945]igt/gen3_mixed_blits randomly causes
                    [drm:i915_report_and_clear_eir] *ERROR* EIR stuck:
                    0x00000010, masking
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 87813
  --> https://bugs.freedesktop.org/attachment.cgi?id=87813&action=edit
dmesg

System Environment:
--------------------------
Platform:  Pineview/945
Kernel:   (drm-intel-fixes)cd66407810869709e0d6764409137d48c6812cfc

Bug detailed description:
-----------------------------
Run ./gen3_mixed_blits, [drm:i915_report_and_clear_eir] *ERROR* EIR stuck:
0x00000010, masking randomly appears in dmesg.It happens 1 in 5 runs.
It happens on pineview and 945 with -fixes kernel.

output:
Using 384 1MiB buffers
Verifying initialisation...done
Cyclic blits, forward...verifying...done
Cyclic blits, backward...verifying...done
Random blits...verifying...done

Reproduce steps:
----------------------------
1../gen3_mixed_blits

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