[Bug 64811] New: [HSW-ULT regression] GPU hang when run x11perf enabling SNA

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64811

          Priority: medium
            Bug ID: 64811
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW-ULT regression] GPU hang when run x11perf
                    enabling SNA
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mengmeng.meng at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 79606
  --> https://bugs.freedesktop.org/attachment.cgi?id=79606&action=edit
Xorg.0.log

Environment:
----------------
Platform: HSW-ULT(id=0x0a26, rev09)
Libdrm:  (master)2.4.44-9-g96e90aabc4c0238de2f2d245899f991a3b996587
Mesa:    (master)888fc7a89197972aac614fc19d1c82ed1adbb3f2
Xserver: (master)xorg-server-1.14.99.1-81-g2f1aedcaed8fd99b823
Xf86_video_intel:(master)2.21.6-31-g2217f6356b53263b6ce8f92b5c29c0614d4ef2a5
Cairo:   (master)728e58e60f89076f626329ee3f006f011783f90b
Kernel:  (drm-intel-nightly) fa643cb2d17c011fdddd5e0cc8fc808e097dc5bb

Bug description:
--------------------------
GPU hang when run x11perf enabling SNA on ULT and it works well with UXA.
The problem doesn’t exist on HSW desktop and IVB.
It’s kernel regression on nightlytop branch. It’s good on
–nightlytop_2013-05-03(git-040e2924d).
The problem doesn’t exist on all sub-branches of nightlytop. It seems that
kernel merge cause the problem. Please see Xorg.0.log and i915_error_state
attached.

Reproduce steps:
----------------
1.enable SNA
2.xinit&
3.x11perf –aa10text

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