Page fault from IRQL (0xD1)

This blog post is about an interesting dump file I came across on our forum.
So far an IRP was sent from the Logitech Webcam down the driver stack of the USB parent driver, and then the USB 3.0 host controller. The IRP was changing the power state of this device, and incurred a page fault at Dispatch IRQL, a big no no.

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