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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 0:0x85fcfffd, in IntelHwCodec [3958], reason render ring hung"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93749">93749</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU HANG: ecode 0:0x85fcfffd, in IntelHwCodec [3958], reason render ring hung
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (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>zhixue.xie@intel.com
          </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=121100" name="attach_121100" title="/sys/class/drm/card0/error">attachment 121100</a> <a href="attachment.cgi?id=121100&action=edit" title="/sys/class/drm/card0/error">[details]</a></span>
/sys/class/drm/card0/error

GPU hung on Android 5.1, Linux kernel 3.14.55, here is the serial port log:

[  306.037014] atomisp-css2400b0_v21 0000:00:03.0: DFS target freq is rejected
by HW.
[  306.181557] atomisp-css2400b0_v21 0000:00:03.0: atomisp_isr:no
subdev.event:8192
[  306.203808] atomisp-css2400b0_v21 0000:00:03.0: stop stream timeout.
[  306.268207] atomisp-css2400b0_v21 0000:00:03.0: stop stream timeout.
[  306.421314] atomisp-css2400b0_v21 0000:00:03.0: DFS target freq is rejected
by HW.
[  306.442146] compat_ioctl32: unknown ioctl '>', dir=1, #0 (0x40043e00)
[  306.509024] atomisp-css2400b0_v21 0000:00:03.0: DFS target freq is rejected
by HW.
[  335.128824] CPU0: Core temperature above threshold, cpu clock throttled
(total events = 1)
[  335.128829] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 1)
[  335.128855] CPU2: Core temperature above threshold, cpu clock throttled
(total events = 1)
[  335.128900] CPU3: Core temperature above threshold, cpu clock throttled
(total events = 1)
[  336.195246] CPU0: Core temperature/speed normal
[  336.195257] CPU1: Core temperature/speed normal
[  336.195273] CPU2: Core temperature/speed normal
[  336.195283] CPU3: Core temperature/speed normal
[  491.933138] fence timeout on [ffff880070697440] after 2000ms
[  492.798333] fence timeout on [ffff8800590ba300] after 3000ms
[  495.797511] [drm] GPU HANG: ecode 0:0x85fcfffd, in IntelHwCodec [3958],
reason render ring hung
[  495.807834] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  495.818341] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  495.828461] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  495.839385] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  495.849541] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  495.856910] i915_gem_wedged() (0) intr 0
[  495.861439] [drm:intel_update_plane] *ERROR* pin and fence of fb failed with
-5
[  495.861466] i915_gem_wedged() (0) intr 1
[  495.861468] i915_gem_wedged() (0) intr 1
[  495.861470] i915_gem_wedged() (0) intr 1
[  495.861505] i915_gem_wedged() (0) intr 1
[  495.861507] i915_gem_wedged() (0) intr 1
[  495.861509] i915_gem_wedged() (0) intr 1
[  495.861545] i915_gem_wedged() (0) intr 1
[  495.861546] i915_gem_wedged() (0) intr 1
[  495.861548] i915_gem_wedged() (0) intr 1
[  495.910328] [drm:intel_set_disp_plane_update] *ERROR* drm_mode_setplane
failed
[  516.819791] [drm] GPU HANG: ecode 0:0x85fcfffd, in IntelHwCodec [3958],
reason render ring hung
[  516.829971] i915_gem_wedged: 4 callbacks suppressed
[  516.835531] i915_gem_wedged() (0) intr 1
[  516.840095] i915_gem_wedged() (0) intr 1
[  516.840105] i915_gem_wedged() (0) intr 1
[  516.840108] i915_gem_wedged() (0) intr 1
[  516.840111] i915_gem_wedged() (0) intr 1
[  516.857812] i915_gem_wedged() (0) intr 1
[  516.858779] i915_gem_wedged() (0) intr 1
[  516.858783] i915_gem_wedged() (0) intr 1
[  516.858787] i915_gem_wedged() (0) intr 1
[  516.875483] i915_gem_wedged() (0) intr 1
[  601.928031] mce: [Hardware Error]: Machine check events logged
[  643.194217] CPU0: Core temperature above threshold, cpu clock throttled
(total events = 70)
[  643.194221] CPU1: Core temperature above threshold, cpu clock throttled
(total events = 70)
[  643.194245] CPU2: Core temperature above threshold, cpu clock throttled
(total events = 70)
[  643.194280] CPU3: Core temperature above threshold, cpu clock throttled
(total events = 70)
[  645.793067] CPU0: Core temperature/speed normal
[  645.793495] CPU1: Core temperature/speed normal
[  645.793509] CPU3: Core temperature/speed normal
[  645.793519] CPU2: Core temperature/speed normal
[  752.141518] mce: [Hardware Error]: Machine check events logged</pre>
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