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    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>high
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [ILK Regression]Cairo_test causes X no response"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=76430">76430</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>[ILK Regression]Cairo_test causes X no response
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>critical
          </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>unspecified
          </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=96143" name="attach_96143" title="dmesg">attachment 96143</a> <a href="attachment.cgi?id=96143&action=edit" title="dmesg">[details]</a></span>
dmesg

system Environment:
--------------------------
Platform: Ironlake
Kernel: drm-intel-nightly/2c0d38d786b40c51f9270c525d904a88eec70960

Bug detailed description:
-----------------------------
Run all Cairo_test, X will be no response.
It happens on Ironlake with -queued and -nightly kernel. It doesn't happen on
-fixes kernel.

The latest known good commit: e8e6e6012d68c4967e8f26fdd39ac95c247d4789
The latest known bad commit:  33688d95c458ffca6b247189cc6f15277fd6abf0

[  523.262914] Call Trace:
[  523.262933]  [<ffffffffa007d39c>] ? i915_gem_set_caching_ioctl+0x7d/0xbe
[i915]
[  523.262968]  [<ffffffffa007f616>] ? i915_gem_set_tiling+0x421/0x4fd [i915]
[  523.263000]  [<ffffffffa0002f78>] ? drm_ioctl+0x264/0x38d [drm]
[  523.263031]  [<ffffffffa007d31f>] ?
i915_gem_object_set_cache_level+0x1cb/0x1cb [i915]
[  523.263065]  [<ffffffff812d8c69>] ? timerqueue_add+0x79/0x98
[  523.263090]  [<ffffffff8104d283>] ? enqueue_hrtimer+0x15/0x37
[  523.263115]  [<ffffffff8104d850>] ? __hrtimer_start_range_ns+0x238/0x256
[  523.263144]  [<ffffffff81038055>] ? timespec_add_safe+0x1e/0x4d
[  523.263170]  [<ffffffff810ed5db>] ? do_vfs_ioctl+0x3ec/0x435
[  523.263194]  [<ffffffff810ed66d>] ? SyS_ioctl+0x49/0x78
[  523.263218]  [<ffffffff81092a84>] ? __audit_syscall_exit+0x209/0x225
[  523.263247]  [<ffffffff817214a2>] ? system_call_fastpath+0x16/0x1b
[  523.263273] Code: 4a 01 00 00 48 8b 40 68 48 83 e8 68 48 8d 50 68 49 39 d4
75 e2 eb 3b 49 8b 45 30 f6 40 1c 20 74 0a 4d 8b 7f 68 49 83 ef 68 eb 2a <41> f6
47 20 20 74 ef 4c 89 f6 4c 89 ff e8 7e b7 ff ff 84 c0 75
[  523.263502] RIP  [<ffffffffa007d1c9>]
i915_gem_object_set_cache_level+0x75/0x1cb [i915]
[  523.263542]  RSP <ffff8800cb321d58>
[  523.269979] ---[ end trace 9ab10df298350874 ]---</pre>
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