在calldriver时出现Break Due to Page fault(0EH) Fault=0000是怎么回事???在线等待

 在adddevice成功后,进入startdevice中的如下语句时出错
UsbBuildGetDescriptorRequest (urb,                      (USHORT) sizeofstruct_URB_CONTROL_DESCRIPTOR_REQUEST),                                         USB_DEVICE_DESCRIPTOR_TYPE,
                                         0,
                                         0,
                                         deviceDescriptor,
                                         NULL,
                                         siz,
                                         NULL);

 ntStatus = UsbTest_CallUSBD(DeviceObject, urb);
****错误就在每次进入这个CallUSBD后softice出现page fault的错误信息,这是怎么回事??
CallUSBD源码如下:

KEVENT event;
KeInitializeEvent(&event, NotificationEvent, FALSE);

IO_STATUS_BLOCK iostatus;
PIRP Irp = IoBuildDeviceIoControlRequest(IOCTL_INTERNAL_USB_SUBMIT_URB,
pdx->LowerDeviceObject, NULL, 0, NULL, 0, TRUE, &event, &iostatus);

if (!Irp){
KdPrint((DRIVERNAME " - Unable to allocate IRP for sending URBn"));
return STATUS_INSUFFICIENT_RESOURCES;
}

PIO_STACK_LOCATION stack = IoGetNextIrpStackLocation(Irp);
stack->Parameters.Others.Argument1 = (PVOID) urb;
 KdPrint(("Ready to send Urb to lower devicen"));//此处可以进入
NTSTATUS status = IoCallDriver(pdx->LowerDeviceObject, Irp);
/*****错误就在此调用*******/
 if(ntStatus == STATUS_SUCCESS)
   KdPrint(("Succeed in calling next driver in UsbTest_CallUSBD()n"));
    else
    KdPrint(("Failed in calling next driver in UsbTest_CallUSBD()n"));//调用USBD后失败并输出此错误信息

if (status == STATUS_PENDING){
KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
status = iostatus.Status;
}
return status;

[编辑 -  12/28/04 by  rogerwoo]

没人知道吗?
顶上去

请问楼主，这个问题是怎么产生的，我也遇到这个问题了，不知道如何去解决。。。跪求指导