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        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW]igt/gem_reset_stats sporadically causes system"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=83340">83340</a>
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org, jinxianx.guo@intel.com
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[HSW]igt/gem_reset_stats sporadically causes system
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>huax.lu@intel.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>XOrg CVS
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
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        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=105539" name="attach_105539" title="dmesg">attachment 105539</a> <a href="attachment.cgi?id=105539&action=edit" title="dmesg">[details]</a></span>
dmesg

==System Environment==
--------------------------
Regression: not sure, unstable
Non-working platforms: HSW

==kernel==
--------------------------
drm-intel-nightly/6e9c5b9d428bb075293ec865ba58f90931187a48
drm-intel-fixes/bbe1c2740d3a25aa1dbe5d842d2ff09cddcdde0a
drm-intel-next-queued/c101c5b635bee54e43d0732473d2f80b2a0e00f4


==Bug detailed description==
It sporadically causes system hang, Run 5 cycles, it happens at the 5th cycle.
It happens on HSW with drm-intel-nightly, drm-intel-fixes and
rm-intel-next-queued kernel.

output:
IGT-Version: 1.7-gd0a41b4 (x86_64) (Linux:
3.17.0-rc2_drm-intel-nightly_6e9c5b_20140901+ x86_64)
Subtest params: SUCCESS
Subtest params-ctx-render: SUCCESS
Subtest reset-stats-render: SUCCESS

Reproduce steps:
---------------------------- 
1. run ./gem_reset_stats 5 cycles.</pre>
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