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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - GPU HANG ecode 0:0x9f47f9fd, in chromium [28997], reason: Ring hung, action: reset"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=86937">86937</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU HANG ecode 0:0x9f47f9fd, in chromium [28997], reason: Ring hung, action: reset
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

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

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

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

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

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

        <tr>
          <th>Reporter</th>
          <td>dkg@fifthhorseman.net
          </td>
        </tr>

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

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=110362" name="attach_110362" title="error output">attachment 110362</a> <a href="attachment.cgi?id=110362&action=edit" title="error output">[details]</a></span>
error output

I was running chromium which was displaying a video from youtube
(<a href="https://www.youtube.com/watch?v=OnuH-yO0BJE">https://www.youtube.com/watch?v=OnuH-yO0BJE</a>) when i got the gnome frowny-face
and my session failed and had to be restarted.

in dmesg, i see:

[662508.816047] [drm] stuck on render ring
[662508.817097] [drm] GPU HANG: ecode 0:0x9f47f9fd, in chromium [28997],
reason: Ring hung, action: reset
[662508.817100] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[662508.817103] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[662508.817106] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[662508.817108] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[662508.817111] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[662508.817294] [drm:i915_reset] *ERROR* Failed to reset chip: -19
[662510.644230] chromium[29160]: segfault at 1f8 ip 00007fa0e5c40def sp
00007fffc4519960 error 4 in i965_dri.so[7fa0e58eb000+51e000]
[662510.793908] chromium[29168]: segfault at 1f8 ip 00007fcda8e43def sp
00007fff39fdc000 error 4 in i965_dri.so[7fcda8aee000+51e000]
[662519.552681] gnome-shell[29182]: segfault at 1f8 ip 00007f482100fdef sp
00007fff1b4bad90 error 4 in i965_dri.so[7f4820cba000+51e000]


I'm running linux 3.17 from debian experimental:

Linux frigg 3.17-1-amd64 #1 SMP Debian 3.17-1~exp1 (2014-10-14) x86_64
GNU/Linux

libdrm-intel1:amd64 2.4.58-2
xserver-xorg-video-intel 2:2.21.15-2+b2
chromium 39.0.2171.71-2

I'm attaching  the full dump of /sys/class/drm/card0/error, and i'll follow up
with the full dmesg.</pre>
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