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The SyncReqSend rule specifies that all synchronous send requests are done by using synchronous-specific KMDF device driver interface methods, and that the methods have a nonzero timeout value set.
If the driver calls a WDFxxxSendXXXSynchronously method without setting a valid timeout, the thread can become stalled if hardware does not respond promptly.
Driver model: KMDF
How to test
| At compile time |
|---|
Run Static Driver Verifier and specify the SyncReqSend 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. |
Applies to
WdfIoTargetSendIoctlSynchronously WdfIoTargetSendReadSynchronously WdfIoTargetSendWriteSynchronously WdfUsbTargetDeviceSendControlTransferSynchronously WdfUsbTargetDeviceSendUrbSynchronously WdfUsbTargetPipeReadSynchronously WdfUsbTargetPipeSendUrbSynchronously WdfUsbTargetPipeWriteSynchronously