IrqlDispatch rule (wdm)

The IrqlDispatch rule specifies that the driver calls the following DDIs only when it is executing at IRQL = DISPATCH_LEVEL.

• FreeAdapterChannel

• FreeMapRegisters

• GetScatterGatherList

• IoAllocateAdapterChannel

• IoAllocateController

• IoFreeController

• IoStartNextPacket

• KeAcquireSpinLockAtDpcLevel

• KeInsertByKeyDeviceQueue

• KeInsertDeviceQueue

• KeReleaseSpinLockFromDpcLevel

• KeRemoveByKeyDeviceQueue

• KeRemoveDeviceQueue

• PutScatterGatherList

Driver model: WDM

Bug check(s) found with this rule: Bug Check 0xA: IRQL_NOT_LESS_OR_EQUAL , Bug Check 0xC4: DRIVER_VERIFIER_DETECTED_VIOLATION (0x00020003)

How to test

At compile time
Run Static Driver Verifier and specify the IrqlDispatch rule. Use the following steps to run an analysis of your code: Prepare your code (use role type declarations). Run Static Driver Verifier. View and analyze the results. For more information, see Using Static Driver Verifier to Find Defects in Drivers.

At run time
Run Driver Verifier and select the DDI compliance checking option.

Applies to

AllocateAdapterChannel AllocateCommonBuffer BuildMdlFromScatterGatherList BuildScatterGatherList FlushAdapterBuffers FreeAdapterChannel FreeCommonBuffer FreeMapRegisters GetDmaAlignment GetScatterGatherList IoAllocateController IoFreeController IoStartNextPacket IoWriteErrorLogEntry KeInsertByKeyDeviceQueue KeInsertDeviceQueue KeRemoveByKeyDeviceQueue KeRemoveDeviceQueue MapTransfer PutDmaAdapter PutScatterGatherList ReadDmaCounter

See also

Managing Hardware Priorities Preventing Errors and Deadlocks While Using Spin Locks