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    <body><span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [HSW drm] stuck on render ring + Xorg segfault"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93672">bug 93672</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Assignee</td>
           <td>intel-gfx-bugs@lists.freedesktop.org
           </td>
           <td>idr@freedesktop.org
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Product</td>
           <td>DRI
           </td>
           <td>Mesa
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">QA Contact</td>
           <td>intel-gfx-bugs@lists.freedesktop.org
           </td>
           <td>
                
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Version</td>
           <td>XOrg git
           </td>
           <td>unspecified
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Component</td>
           <td>DRM/Intel
           </td>
           <td>Drivers/DRI/i915
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [HSW drm] stuck on render ring + Xorg segfault"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93672#c8">Comment # 8</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [HSW drm] stuck on render ring + Xorg segfault"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93672">bug 93672</a>
              from <span class="vcard"><a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> <span class="fn">yann</span></a>
</span></b>
        <pre>(In reply to Lonni J Friedman from <a href="show_bug.cgi?id=93672#c0">comment #0</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=120967" name="attach_120967" title="/sys/class/drm/card0/error">attachment 120967</a> <a href="attachment.cgi?id=120967&action=edit" title="/sys/class/drm/card0/error">[details]</a></span>
> /sys/class/drm/card0/error
> </span >

Lonni, I recommend you to update your system (kernel as well as Mesa driver) to
benefit of all fix and enhancement done. Please re-test and confirm if this
issue is still occurring or not.

In parallel, assigning to Mesa product (please let me know if I am mistaken
with this GPU Hang).

>From this error dump, hung is happening in render ring batch with active head
at 0x63831560, with 0x7a000002 (PIPE_CONTROL) as IPEHR.

Batch extract (around 0x63831560):

0x63831534:      0x7b000005: 3DPRIMITIVE:
0x63831538:      0x0000000f:    rect list sequential
0x6383153c:      0x00003498:    vertex count
0x63831540:      0x0000497d:    start vertex
0x63831544:      0x00000001:    instance count
0x63831548:      0x00000000:    start instance
0x6383154c:      0x00000000:    index bias
0x63831550:      0x7a000002: PIPE_CONTROL
0x63831554:      0x00100002:    no write, cs stall, stall at scoreboard,
0x63831558:      0x00000000:
0x6383155c:      0x00000000:
0x63831560:      0x782f0000: 3DSTATE_SAMPLER_STATE_POINTERS_PS
0x63831564:      0x000018c0:    dword 1
0x63831568:      0x782a0000: 3DSTATE_BINDING_TABLE_POINTERS_PS
0x6383156c:      0x0000fde0:    dword 1

We can also note in the dump an error:
ERROR: 0x00000105
    TLB page fault error (GTT entry not valid)
    Invalid page directory entry error
    Cacheline containing a PD was marked as invalid</pre>
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