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<p class=MsoNormal>Fairly minimal patch to address ticket #6453, and some minor
changes. I release this tiny bit of code under the MIT license.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Problem description and fix:<o:p></o:p></p>
<p class=MsoNormal>If verifier is enabled with “Force Pending IO
requests”, IoCallDriver will return 0x103(STATUS_PENDING). If
IoCallDriver returns pending, we wait for the completion event as we should
– but we fail to copy the status from the IOSB, so the packet is
completed with STATUS_PENDING. This will cause a verifier bugcheck, and
an assertion on checked builds of Windows. The fix is to simply copy the
status value from the IOSB to the status variable after waiting for completion.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>On a side note, if anyone has a few spare cycles to work on
#6183, it should be a pretty simple fix and would be greatly appreciated.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Additional changes: <o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:20.25pt;text-indent:-.25in;
mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span
style='font:7.0pt "Times New Roman"'>
</span></span><![endif]>Optimization from DDK sample event-setting completion
routine added. See WDK\src\general\toaster\wdm\filter\filter.c,
FilterStartCompletionRoutine or <a
href="http://msdn.microsoft.com/en-us/library/ms810023.aspx">http://msdn.microsoft.com/en-us/library/ms810023.aspx</a>.<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:20.25pt;text-indent:-.25in;
mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span
style='font:7.0pt "Times New Roman"'>
</span></span><![endif]>Removed information and Irp->IoStatus.Status check
as they are unnecessary.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>-Dennis Lawler<o:p></o:p></p>
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