很奇怪的问题，高手请进！

status = IoCallDriver(((PDEVICE_EXTENSION) DeviceObject->DeviceExtension)->FileSystemDeviceObject, Irp);
   if(STATUS_PENDING == status) 
   {
       NTSTATUS localStatus = KeWaitForSingleObject(&waitEvent, Executive, KernelMode, FALSE, NULL);
       ASSERT(STATUS_SUCCESS == localStatus);
   }   if (NT_SUCCESS(Irp->IoStatus.Status)&& IrpSp->FileObject !=NULL)
   {
       FILE_STANDARD_INFORMATION StdInfo;
       if(QueryStdInfo(IrpSp->FileObject, ((PDEVICE_EXTENSION) DeviceObject->DeviceExtension)->FileSystemDeviceObject, &StdInfo))
           bIsDir = StdInfo.Directory;    
       else
       {
           if(FilePath != NULL)
               ExFreePool(FilePath);
           IoCancelFileOpen(((PDEVICE_EXTENSION) DeviceObject->DeviceExtension)->FileSystemDeviceObject,IrpSp->FileObject);
           goto EXIT_BLOCK_RES_IRP;
       }
       if ((FilePath!=NULL)&&(IrpSp->FileObject->FsContext!=NULL)) 
       {
           if (!AddHashEntry(FilePath,IrpSp->FileObject, bIsDir,ucObjAttr,ObjectType)) 
           {            
               if(FilePath != NULL)
                   ExFreePool(FilePath);
               IoCancelFileOpen(((PDEVICE_EXTENSION) DeviceObject->DeviceExtension)->FileSystemDeviceObject,IrpSp->FileObject);
               goto EXIT_BLOCK_RES_IRP;
           }
       }
   }
以上是create例程的代码，其中QueryStdInfo函数如下
BOOLEAN QueryStdInfo(PFILE_OBJECT FileObject, PDEVICE_OBJECT DeviceObject,
           PFILE_STANDARD_INFORMATION FileStdInfo)
{
   IO_STATUS_BLOCK IoStatusBlock;
   PIRP Irp;
   PIO_STACK_LOCATION StackPtr;
   KEVENT Event;
   NTSTATUS Status;    
   KeInitializeEvent(&Event,SynchronizationEvent,FALSE);
   if (FileStdInfo == NULL)        
       return FALSE;
   
   Irp = IoAllocateIrp(DeviceObject->StackSize,
       FALSE);
   if (Irp == NULL)
   {
       return FALSE;
   }
   
   Irp->AssociatedIrp.SystemBuffer = FileStdInfo;
   Irp->UserIosb = &IoStatusBlock;
   Irp->UserEvent = &Event;
   Irp->RequestorMode = KernelMode;
   Irp->Tail.Overlay.Thread = PsGetCurrentThread();
   Irp->Tail.Overlay.OriginalFileObject = FileObject;
   
   StackPtr = IoGetNextIrpStackLocation(Irp);
   StackPtr->MajorFunction = IRP_MJ_QUERY_INFORMATION;
   StackPtr->MinorFunction = 0;
   StackPtr->Flags = 0;
   StackPtr->Control = 0;
   StackPtr->DeviceObject = DeviceObject;
   StackPtr->FileObject = FileObject;
   
   StackPtr->Parameters.QueryFile.FileInformationClass =
       FileStandardInformation;
   StackPtr->Parameters.QueryFile.Length = sizeof(FILE_STANDARD_INFORMATION);
   
   IoSetCompletionRoutine(Irp, QueryStdInfoComplete, 0, TRUE, TRUE, TRUE);
   Status = IoCallDriver(DeviceObject,Irp);
          KeWaitForSingleObject(&Event,Executive,KernelMode,FALSE,NULL);    
   
   return (NT_SUCCESS(IoStatusBlock.Status));
}NTSTATUS 
QueryStdInfoComplete(PDEVICE_OBJECT DeviceObject,
                            PIRP Irp,
                            PVOID Context)
                            //
                            // FilemonQueryFileNameComplete
                            //
                            // This routine is used to handle I/O completion for our self-generated
                            // IRP that is used to query a file's name.
                            //
{
   //
   // Copy the status information back into the "user" IOSB.
   //
   *Irp->UserIosb = Irp->IoStatus;
   
   // Set the user event - wakes up the mainline code doing this.
   //
   KeSetEvent(Irp->UserEvent, 0, FALSE);
   
   //
   // Free the IRP now that we are done with it.    //
   
   IoFreeIrp(Irp);
   //
   // We return STATUS_MORE_PROCESSING_REQUIRED because this "magic" return value
   // tells the I/O Manager that additional processing will be done by this driver
   // to the IRP - in fact, it might (as it is in this case) already BE done - and
   // the IRP cannot be completed.
   //
   return STATUS_MORE_PROCESSING_REQUIRED;
}但是这样在访问网上共享文件时出现死锁，于是将代码该为
   if(STATUS_PENDING == Status && FileObject->Flags & FO_SYNCHRONOUS_IO)
       
   {
       KeWaitForSingleObject(&Event,Executive,KernelMode,FALSE,NULL);
   }
结果和clearcase冲突，已运行就蓝屏，搞不明白为什么，望高手指教。