CancelSpinLock rule (wdm)
The CancelSpinLock rule specifies that the driver calls IoAcquireCancelSpinLock before calling IoReleaseCancelSpinLock and that the driver calls IoReleaseCancelSpinLock before any subsequent calls to IoAcquireCancelSpinLock.
This rule also specifies that the driver must not hold any spin locks when the dispatch routine or cancel routine ends. Nested calls are permitted.
How to test
|At compile time|
Run Static Driver Verifier and specify the CancelSpinLock rule.Use the following steps to run an analysis of your code:
For more information, see Using Static Driver Verifier to Find Defects in Drivers.