�Stop 0xB8 ATTEMPTED_SWITCH_FROM_DPC� Error During Shutdown or When Entering Hibernation on Windows Server 2008 and Server 2008 R2

Consider the following scenario:

��Windows Server 2008 or Windows Server 2008 R2
��PCI-Express Fibre Channel (FC) Host Bus Adapter (HBA) installed and configured as the boot device

During shut down or when entering hibernation, the system may bugcheck with the following stop code.

NOTE: The specific parameters and address may vary.

STOP: 0x000000B8 (0xAAAAAAAA,0xBBBBBBBB,0xCCCCCCCC,0xDDDDDDDD)
ATTEMPTED_SWITCH_FROM_DPC address 0xf729a248 in pci.sys

During device power down, the PCI.sys driver will read the status register of the PCI-Express device to see if the TransactionsPending bit is set.

http://msdn.microsoft.com/en-us/library/ff537465(VS.85).aspx

If the TransactionsPending bit is set, the PCI.sys driver will attempt to suspend the thread by entering a voluntary wait, to allow the bit to be cleared.� This type of wait is not legal when processing a Deferred Procedural Call (DPC).

http://msdn.microsoft.com/en-us/library/ff560140(VS.85).aspx

Microsoft is aware that this problem exists in the versions of Windows listed in this article.� Currently there are no solutions for this problem. This is a contained failure and the subsequent system reboot/resume should proceed normally.

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