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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - System fails to reboot after Ctrl-Alt-Del"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=108464#c14">Comment # 14</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - System fails to reboot after Ctrl-Alt-Del"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=108464">bug 108464</a>
              from <span class="vcard"><a class="email" href="mailto:duncan_roe@optusnet.com.au" title="Duncan Roe <duncan_roe@optusnet.com.au>"> <span class="fn">Duncan Roe</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=143008" name="attach_143008" title="dmesg o/p with attachment 143007">attachment 143008</a> <a href="attachment.cgi?id=143008&action=edit" title="dmesg o/p with attachment 143007">[details]</a></span>
dmesg o/p with <span class=""><a href="attachment.cgi?id=143007" name="attach_143007" title="Diagnostic patches to determine which pointer is null">attachment 143007</a> <a href="attachment.cgi?id=143007&action=edit" title="Diagnostic patches to determine which pointer is null">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=108464&attachment=143007'>[review]</a>

The exception occurs in dc_link_aux_transfer, which is called by
dm_dp_aux_transfer which is the top displayed function on the stack after the
BUG line in <span class=""><a href="attachment.cgi?id=142063" name="attach_142063" title="dmesg o/p as requested">attachment 142063</a> <a href="attachment.cgi?id=142063&action=edit" title="dmesg o/p as requested">[details]</a></span>. There is no BUG entry with the patch, instead
there is a line
Cowardly refusing to call through null pointer
after which the patch makes dc_link_aux_transfer return -1.
Code somewhere up the stack attempts 2 retries.</pre>
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