Microsoft KB Archive/820841

= A &quot;Stop 0x00000010&quot; Error Occurs in Scsiport.sys in Windows 2000 =

Article ID: 820841

Article Last Modified on 2/22/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
During periods of substantial input/output (I/O) to the hard disks in a computer, you may receive a &quot;Stop 0x00000010&quot; error message on a blue screen.



CAUSE
When substantial I/O is occuring to the hard disks, the Scsiport driver's completion DPC routine releases the device extension spinlock, and then reacquires the lock if the current hard disk's Logical Unit Number (LUN) ReadyLogicalUnit field is not null. This behavior causes a &quot;Stop 0x00000010&quot; error message because the thread is unsynchronized. Another thread can update the ReadyLogicalUnit field after the owning thread tests the field but before the owning thread runs the next loop iteration. The loop test succeeds because the ReadyLogicalUnit field is not null and the GetNextLuRequest field is called while not holding the spinlock.

The Scsiport driver does not unconditionally reacquire the adapter spinlock at the bottom of the loop. The Scsiport driver reacquires the adapter spinlock conditionally and releases the spinlock when the loop is exited.



Hotfix Information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

File Information
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date        Time  Version       Size   File name ---  19-May-2003 18:40 5.0.2195.6745 74,192 Scsiport.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New Naming Schema for Microsoft Windows Hotfix Packages

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe kbwin2000presp5fix KB820841

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