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    <body><span class="vcard"><a class="email" href="mailto:siglesias@igalia.com" title="Samuel Iglesias <siglesias@igalia.com>"> <span class="fn">Samuel Iglesias</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - brw_meta_fast_clear (brw=brw@entry=0x7fffd4097a08, fb=fb@entry=0x7fffd40fa900, buffers=buffers@entry=2, partial_clear=partial_clear@entry=false)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=86281">bug 86281</a>
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            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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           <td style="text-align:right;">CC</td>
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           <td>siglesias@igalia.com
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            <b><a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - brw_meta_fast_clear (brw=brw@entry=0x7fffd4097a08, fb=fb@entry=0x7fffd40fa900, buffers=buffers@entry=2, partial_clear=partial_clear@entry=false)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=86281#c19">Comment # 19</a>
              on <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - brw_meta_fast_clear (brw=brw@entry=0x7fffd4097a08, fb=fb@entry=0x7fffd40fa900, buffers=buffers@entry=2, partial_clear=partial_clear@entry=false)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=86281">bug 86281</a>
              from <span class="vcard"><a class="email" href="mailto:siglesias@igalia.com" title="Samuel Iglesias <siglesias@igalia.com>"> <span class="fn">Samuel Iglesias</span></a>
</span></b>
        <pre>I reproduced this bug on my SNB laptop and Mesa master (HEAD 7850774). I found
that just before crashing at brw_meta_fast_clear.c:451, it prints out the
following error:

  Failed to open BO for returned DRI2 buffer (1600x900, dri2 back buffer, named
11).
  This is likely a bug in the X Server that will lead to a crash soon.

Which is printed at intel_process_dri2_buffer() when
drm_intel_bo_gem_create_from_name() returns a NULL pointer. I added some traces
to that function at libdrm and found that drmIoctl(bufmgr_gem->fd,
DRM_IOCTL_GEM_OPEN, &open_arg) is returning an error, so this bug seems to be
produced by the kernel driver.

My distro is Debian Jessie with a Linux kernel 3.14.

Hope this helps.</pre>
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