请教，KeSetEvent蓝屏

我首先由应用层调用CreateEvent创建事件
SharedEvent = CreateEvent(NULL, TRUE, FALSE, "SharedEvent");
然后通过DeviceIoControl将事件名称发送到驱动
DeviceIoControl(DeviceDriver,
     IOCTL_OPEN_EVENT,
     NULL, 0,
     NULL, 0,
            &bytesReturned,
     NULL);
内核程序在IOCTL_OPEN_EVENT的处理中

HANDLE        SharedEventHandle = NULL;PKEVENT         SharedEvent   = NULL;
UNICODE_STRING       EventName;

       RtlInitUnicodeString(&EventName, L"\BaseNamedObjects\SharedEvent");
       SharedEvent = IoCreateNotificationEvent(&EventName, &SharedEventHandle);
       if (SharedEvent != NULL) {
              Status = STATUS_SUCCESS;
       } else {
              Status = STATUS_UNSUCCESSFUL;
       }

然后我想在IRP_MN_START_DEVICE事件发生的时候设置该事件
KeSetEvent(SharedEvent,0,FALSE);
大部分时候插入U盘时候正常，但是有的时候慧蓝屏
提示:IRQL_NOT_LESS_OR_EQUAL
请问怎么回事？

If Wait is set to FALSE, the caller can be running at IRQL <= DISPATCH_LEVEL. Otherwise, callers of KeSetEvent must be running at IRQL PASSIVE_LEVEL and in a nonarbitrary thread context.
大概是这个意思吧, 不知道怎么用的