ZwReadFile老是黑屏？

cTempName 中是“\\??\\c:\\abc\\abc.exe”这样的文件名
           RtlInitAnsiString( &fileNameAnsiString, cTempName);
RtlAnsiStringToUnicodeString( &fileNameUnicodeString, &fileNameAnsiString, TRUE );
InitializeObjectAttributes( &objectAttributes,
&fileNameUnicodeString, OBJ_CASE_INSENSITIVE, NULL, NULL );

ntStatus = ZwCreateFile(
&hFileHandle,
FILE_READ_DATA,
&objectAttributes,
&Io_StatusBlock,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ,
FILE_OPEN,
FILE_NON_DIRECTORY_FILE,
NULL,
0 );
if( !NT_SUCCESS( ntStatus ) )
{
RtlFreeUnicodeString(&fileNameUnicodeString);
return FALSE;
}
ntStatus = ZwQueryInformationFile(
hFileHandle,
&Io_StatusBlock,
&File_Infomation,
sizeof(FILE_STANDARD_INFORMATION),
FileStandardInformation );
if( !NT_SUCCESS( ntStatus ) )
{
ZwClose (hFileHandle);
RtlFreeUnicodeString(&fileNameUnicodeString);
return FALSE;
}
llFileSize = File_Infomation.EndOfFile.QuadPart;
pBaseAddress = ExAllocatePool(NonPagedPool, (ULONG)llFileSize);
if (!pBaseAddress)
{
ZwClose (hFileHandle);
RtlFreeUnicodeString(&fileNameUnicodeString);
return FALSE;
}
liByteOffSet.QuadPart =0;
ntStatus = ZwReadFile( hFileHandle,
NULL,
NULL,
NULL,
&Io_StatusBlock,
pBaseAddress,
(ULONG)llFileSize,
&liByteOffSet,
NULL );
if( !NT_SUCCESS( ntStatus ) )
{
ExFreePool(pBaseAddress);
ZwClose (hFileHandle);
RtlFreeUnicodeString(&fileNameUnicodeString);
return FALSE;
}

ExFreePool(pBaseAddress);
ZwClose (hFileHandle);
RtlFreeUnicodeString(&fileNameUnicodeString);
ZwCreateFile和ZwQueryInformationFile都执行正确，ZwReadFile执行时肯定会黑屏，但是黑屏的时机不定。如何解决呢？

我也碰到这问题，呵呵