WdfDeviceWdmGetDeviceObject on a WDFDEVICE inside EXPORT_DRIVER

NTDEV
1

Hi,

I am trying to call WdfDeviceWdmGetDeviceObject in an export driver, on a WDFDEVICE created by a driver that is using this export driver.

I see that it crashes with 0x7e code.SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

I see that IP has become NULL soon after WdfDeviceWdmGetDeviceObject.

Hence wanted to know if it is allowed to do such an operation or I must debug my driver in order to find the real cause.

2

WDF handles are local to a driver. What you're trying to do will never
work.

Jake Oshins
Windows Kernel Team

This message offers no warranties and confers no rights.

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Hi,

I am trying to call WdfDeviceWdmGetDeviceObject in an export driver, on a
WDFDEVICE created by a driver that is using this export driver.

I see that it crashes with 0x7e code.SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

I see that IP has become NULL soon after WdfDeviceWdmGetDeviceObject.

Hence wanted to know if it is allowed to do such an operation or I must
debug my driver in order to find the real cause.