📄 bugcheck.htm

📁 WDM驱动范例程序

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<title>The BUGCHECK Sample</title>

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<h2>The BUGCHECK Sample</h2>

<p>The BUGCHECK Sample accompanies Chapter 3 and illustrates how to invoke KeBugCheckEx.</p>



<p>The sample includes one components:</p>

<ul>

<li>BUGCHECK.SYS is a WDM driver for a non-existent device.</li>

</ul>



<h3>Building BUGCHECK</h3>

<p>To build BUGCHECK.SYS, follow the <a href="..\..\wdmbook.htm#wdmbuild">general

instructions for building a WDM sample</a>. The Microsoft Visual C++ project

file is named BUGCHECK.DSP.</p>



<h3>Testing BUGCHECK</h3>

<p>I highly recommend that you make one or all of these prepatory actions before testing BUGCHECK:



<ul>

<li>Download the SYNC.EXE tool from <a href="http://www.sysinternals.com">http://www.sysinternals.com</a>. Run SYNC to

flush all disk caches out to disk. 

<li>Change the Startup and Recovery Settings in My Computer/Properties/Advanced to produce a kernel dump.

<li>Start a kernel debugger

</ul>



Now use <a href="..\..\wdmbook.htm#fastinst">FASINST</a> to install

BUGCHECK.SYS. It will call <b>KeBugCheckEx</b> during DriverEntry.

You can investigate the bug check in the debugger or after the fact

from the crash dump.



<h3>What to look for</h3>

<p>DriverEntry registers a bug check callback and then calls KeBugCheckEx. Note that you're very

unlikely to need to <i>cause</i> a bug check in a driver, but you might very well want to arrange

a callback to record information critical to debugging failures through Online Crash Analysis or

otherwise.</p>



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