IrqlExPassive rule (wdm)

The IrqlExPassive rule specifies that the driver calls the following executive support routines only at IRQL = PASSIVE_LEVEL:

• ExCreateCallback

• ExIsProcessorFeaturePresent

• ExRaiseAccessViolation

• ExRaiseDatatypeMisalignment

• ExRaiseStatus

• ExUuidCreate

The IrqlExPassive rule also specifies that the driver calls ExRaiseStatus at IRQL <= APC_LEVEL.

Driver model: WDM

Bug check(s) found with this rule: Bug Check 0xC4: DRIVER_VERIFIER_DETECTED_VIOLATION (0x00020008), Bug Check 0xA: IRQL_NOT_LESS_OR_EQUAL

How to test

At compile time
Run Static Driver Verifier and specify the IrqlExPassive 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

ExCreateCallback ExIsProcessorFeaturePresent ExRaiseAccessViolation ExRaiseDatatypeMisalignment ExRaiseStatus ExUuidCreate

See also

Managing Hardware Priorities Preventing Errors and Deadlocks While Using Spin Locks