高分求助事件问题

本以为event很简单,看了一下武安河的例子也比较好理解,可自己就是写不对,高手帮看一下
驱动程序相应Ioctl:
  HANDLE hMSecondEvent = *(HANDLE *)I.IoctlBuffer();
if(hMSecondEvent == NULL)
{
t << \"Handle is nulln\";
I.Information() = 0;
status =STATUS_INSUFFICIENT_RESOURCES;
}

m_pEvent =
new (NonPagedPool) KEvent (hMSecondEvent,
OBJECT_TYPE_ALL_ACCESS);

if(m_pEvent != NULL)
{
I.Information() = sizeof(UCHAR);
*(UCHAR *)I.IoctlBuffer() = 1;
status = STATUS_SUCCESS;
t << \"Succed in connect OneSecond eventn\";
}
else
{
I.Information() = sizeof(UCHAR);
*(UCHAR *)I.IoctlBuffer() = 0;
status = STATUS_SUCCESS;
}
应用程序:
if (!DeviceIoControl(m_hDevice, IOCTL_PCITest_EVENT_SET,
&hEventSend, sizeof(hEventSend),  &lReturnedBytes, 2, &lReturnedBytes, NULL))
我用softICE跟踪过,发现两个assert failed,都是kegetcurrentirql
()<Dispatch level.不明白的是事件本来传递就要在低于dispatch下，为什么反而不对了。如果是因为irql高，该怎么改呢。
先谢了，一定高分