Windows Driver Kit: Driver Development Tools
Bug Check 0x44: MULTIPLE_IRP_COMPLETE_REQUESTS
The MULTIPLE_IRP_COMPLETE_REQUESTS bug check has a value of 0x00000044. This indicates that a driver has tried to requested an IRP be completed that is already complete.
Parameters
The following parameters are displayed on the blue screen.
| Parameter | Description |
|---|
| 1 | The address of the IRP |
| 2 | Reserved |
| 3 | Reserved |
| 4 | Reserved |
Cause
A driver has called IoCompleteRequest to ask that an IRP be completed, but the packet has already been completed.
Resolving the Problem
This is a tough bug to find because the simplest case — a driver that attempted to complete its own packet twice — is usually not the source of the problem. More likely, two separate drivers each believe that they own the packet, and each has attempted to complete it. The first request succeeds, and the second fails, resulting in this bug check.
Tracking down which drivers in the system caused the error is difficult, because the trail of the first driver has been covered by the second. However, the driver stack for the current request can be found by examining the device object fields in each of the stack locations.