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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 --- - [BDW]igt/gem_persistent_relocs/forked-faulting-reloc-thrash-inactive causes assertion failure function"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=72103">72103</a>
          </td>
        </tr>

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

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

        <tr>
          <th>Summary</th>
          <td>[BDW]igt/gem_persistent_relocs/forked-faulting-reloc-thrash-inactive causes assertion failure function
          </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>All
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jinxianx.guo@intel.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </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>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=89944" name="attach_89944" title="dmesg">attachment 89944</a> <a href="attachment.cgi?id=89944&action=edit" title="dmesg">[details]</a></span>
dmesg

System Environment:
--------------------------
Platform: Broadwell
kernel   (drm-intel-nexe-queued)8b4f49e03901e82898540bd1189333edf9588d74
Some additional commit info:
Author: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>>
Date:   Mon Nov 25 15:51:16 2013 -0800

    drm/i915: split fb allocation and initialization v2

    If we use a stolen buffer, our probe callback shouldn't allocate a new
    buffer; we should re-use the one from the BIOS instead if possible.

    v2: fix locking (Jesse)

Bug detailed description:
-----------------------------
Assertion failure shown while run the case.

This is the first time to run igt test on Broadwell.

Following cases also have this issue.
igt/gem_persistent_relocs/forked-faulting-reloc-thrashing
igt/gem_persistent_relocs/forked-interruptible-faulting-reloc
igt/gem_persistent_relocs/forked-interruptible-faulting-reloc-thrash-inactive
igt/gem_persistent_relocs/forked-interruptible-faulting-reloc-thrashing
igt/gem_persistent_relocs/forked-interruptible-thrash-inactive
igt/gem_persistent_relocs/forked-interruptible-thrashing
igt/gem_persistent_relocs/forked-thrash-inactive
igt/gem_persistent_relocs/forked-thrashing

Error log:
Test assertion failure function gem_execbuf, file drmtest.c:556:
Failed assertion: ret == 0
Test assertion failure function gem_execbuf, file drmtest.c:556:
Failed assertion: ret == 0
Test assertion failure function gem_execbuf, file drmtest.c:556:
Test assertion failure function gem_execbuf, file drmtest.c:556:
Failed assertion: ret == 0
Failed assertion: ret == 0
child 0 failed with exit status 99
Subtest forked-faulting-reloc-thrash-inactive: FAIL
gem_persistent_relocs: drmtest.c:1181: children_exit_handler: Assertion
`kill(test_children[nc], 3) == 0' failed.
Aborted (core dumped)

Steps:
---------------------------
./gem_persistent_relocs --run-subtest forked-faulting-reloc-thrash-inactive</pre>
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