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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 - [SNB]igt/gem_read_read_speed/read-read-512x512 crash"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90393">90393</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[SNB]igt/gem_read_read_speed/read-read-512x512 crash
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>All
          </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>high
          </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>huax.lu@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=115675" name="attach_115675" title="dmesg">attachment 115675</a> <a href="attachment.cgi?id=115675&action=edit" title="dmesg">[details]</a></span>
dmesg

==System Environment==
--------------------------
Regression: not sure

Non-working platforms: SNB

==kernel==
--------------------------
drm-intel-nightly/a1e469d124cad96cd0d0e149c84f7ebd43ca1893
commit a1e469d124cad96cd0d0e149c84f7ebd43ca1893
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date:   Fri May 8 17:48:23 2015 +0200

    drm-intel-nightly: 2015y-05m-08d-15h-47m-50s UTC integration manifest


2015_04_24/drm-intel-nightly/92bb36c80e561f82b1f4b63cc269a71833137841/
commit 92bb36c80e561f82b1f4b63cc269a71833137841
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date:   Fri Apr 24 00:26:53 2015 +0300

    drm-intel-nightly: 2015y-04m-23d-21h-26m-24s UTC integration manifest

==Bug detailed description==
-----------------------------
Run following case list, it will crash. run ./gem_read_read_speed --run-subtest
read-read-512x512 10 cycles, I don't meet crash.

Run  drm-intel-nightly/a1e469d124cad96cd0d0e149c84f7ebd43ca1893 and
rm-intel-nightly/92bb36c80e561f82b1f4b63cc269a71833137841, both of them have
this issue.

case list:
Intel_gpu_tools/igt@gem_pwrite_pread@display-copy-correctness    PASS
Intel_gpu_tools/igt@gem_pwrite_pread@display-copy-performance    DMESG_WARN
Intel_gpu_tools/igt@gem_pwrite_pread@display-pwrite-blt-gtt_mmap-correctness   
PASS
Intel_gpu_tools/igt@gem_pwrite_pread@display-pwrite-blt-gtt_mmap-performance   
PASS
Intel_gpu_tools/igt@gem_pwrite_pread@snooped-copy-correctness    PASS
Intel_gpu_tools/igt@gem_pwrite_pread@snooped-copy-performance    PASS
Intel_gpu_tools/igt@gem_pwrite_pread@snooped-pwrite-blt-cpu_mmap-correctness   
PASS
Intel_gpu_tools/igt@gem_pwrite_pread@snooped-pwrite-blt-cpu_mmap-performance   
PASS
Intel_gpu_tools/igt@gem_pwrite_pread@uncached-copy-correctness    PASS
Intel_gpu_tools/igt@gem_pwrite_pread@uncached-copy-performance    PASS
Intel_gpu_tools/igt@gem_pwrite_pread@uncached-pwrite-blt-gtt_mmap-correctness  
 PASS
Intel_gpu_tools/igt@gem_pwrite_pread@uncached-pwrite-blt-gtt_mmap-performance  
 PASS
Intel_gpu_tools/igt@gem_pwrite@snoop    PASS
Intel_gpu_tools/igt@gem_pwrite@uncached    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-1024x1024    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-128x128    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-1x1    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-2048x2048    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-256x256    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-4096x4096    PASS
Intel_gpu_tools/igt@gem_read_read_speed@read-read-512x512    CRASH

dmesg:
[  342.257192] gem_read_read_speed: starting subtest read-read-512x512
[  347.947011] [drm] stuck on render ring
[  347.947894] [drm] stuck on blitter ring
[  347.949319] [drm] GPU HANG: ecode 6:0:0x85fffffc, in gem_read_read_s [8985],
reason: Ring hung, action: reset
[  347.950222] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  347.951127] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  347.952048] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  347.952982] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  347.953931] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  347.955113] [drm:i915_reset_and_wakeup] resetting chip
[  347.955275] [drm:i915_context_is_banned [i915]] *ERROR* gpu hanging too
fast, banning!
[  348.459411] drm/i915: Resetting chip after gpu hang
[  348.460405] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -110
[  348.462280] gem_read_read_speed: exiting, ret=0


==Reproduce steps==
---------------------------- 
1.  Run above case list</pre>
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