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            <b><a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - [BDW Regression]igt/gem_close_race/process-exit causes system hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=87477#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - [BDW Regression]igt/gem_close_race/process-exit causes system hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=87477">bug 87477</a>
              from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=111208" name="attach_111208" title="screen shot">attachment 111208</a> <a href="attachment.cgi?id=111208&action=edit" title="screen shot">[details]</a></span>
screen shot

I tried to use netconsole and serial port. 
Our usb network card doesn't not support netconsole.
Attach serial port, system boots fail, and stop at below lines:
[   28.646597] dracut: Switching root
[   28.723991] random: init urandom read with 78 bits of entropy available
[   28.821374] init: plymouth-upstart-bridge main process (2710) terminated
with status 1
[   28.917644] init: plymouth-upstart-bridge main process ended, respawning
[   29.003485] init: plymouth-upstart-bridge main process (2720) terminated
with status 1
[   29.099711] init: plymouth-upstart-bridge main process ended, respawning
 * Startin

Attachment is the screen shot, looks like it's about OOM killer.</pre>
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