大家帮忙看一下，为何这段访问注册表的挖码，一运行就重启?

//从注册表读一个字符串
BOOLEAN ReadRegValueKey(
    IN  HANDLE  hHandle, //注册表句柄
    IN  PWCHAR  pwValueNameString, //UNICOD型的键名
    OUT PVOID   pData, //数据指针
    IN  ULONG   iDataLength //数据长度
    )
{
UINT i;
    NTSTATUS        ntStatus;
    UNICODE_STRING  wValueName;//测试，所以没返回，保存在这个值中
WCHAR wValue[1024];
    ULONG           iLength;
BOOLEAN bSuccess = FALSE;
    PKEY_VALUE_FULL_INFORMATION FullInfo;
    PAGED_CODE();
    RtlInitUnicodeString (&wValueName, pwValueNameString);
    iLength = sizeof (KEY_VALUE_FULL_INFORMATION) + wValueName.MaximumLength + iDataLength;
    FullInfo = ExAllocatePool (PagedPool, iLength);
    if (FullInfo)
{
        ntStatus = ZwQueryValueKey (hHandle,
&wValueName,
KeyValueFullInformation,
FullInfo,
iLength,
&iLength);
        if (NT_SUCCESS (ntStatus))
{
DBGPRINT("ZwQueryValueKey is OK\n");
DbgPrint("ZwQueryValueKey return UNICODE length = %d\n",FullInfo->DataLength);
            ASSERT (iDataLength == FullInfo->DataLength);
//RtlCopyMemory(&wValue, ((PUCHAR)FullInfo) + FullInfo->DataOffset, FullInfo->DataLength);
//RtlInitUnicodeString (&wValueName, (PCWSTR)((PUCHAR) FullInfo) + FullInfo->DataOffset);
//RtlUnicodeStringToAnsiString(&sValue,&wValue,TRUE);
//NdisMoveMemory(pData,sValue.Buffer,sValue.Length);
DbgPrint("ZwQueryValueKey return length = %d\n",FullInfo->DataLength);
for(i=0;i<(FullInfo->DataLength)/2;i++)
DbgPrint("%d",((PUCHAR)FullInfo) + FullInfo->DataOffset+i);
DBGPRINT("\n");

bSuccess = TRUE;
        }
else
DBGPRINT("ZwQueryValueKey is FAILRUE\n");
       ExFreePool (FullInfo);
    }
return bSuccess;
}