public void Smb2OverRdmaChannel_InvalidBufferDescriptor_DeregisteredBuffer()
        {
            InitSmbdConnectionForTestCases(smbdAdapter.TestConfig.TestFileName_LargeFile);

            // SMB2 Read file
            BaseTestSite.Log.Add(LogEntryKind.TestStep, "Register memory and get buffer descriptor for SMB2 WRITE");
            SmbdBufferDescriptorV1 descp;

            smbdAdapter.SmbdRegisterBuffer(
                smbdAdapter.Smb2MaxReadSize,
                SmbdBufferReadWrite.RDMA_WRITE_PERMISSION_FOR_READ_FILE,
                out descp);
            smbdAdapter.SmbdDeregisterBuffer(descp);
            byte[] channelInfo = TypeMarshal.ToBytes <SmbdBufferDescriptorV1>(descp);

            BaseTestSite.Log.Add(LogEntryKind.TestStep, "Read content from file over RDMA.");
            READ_Response readResponse;

            byte[] readData;
            try
            {
                NtStatus status = (NtStatus)smbdAdapter.Smb2ReadOverRdmaChannel(
                    0,
                    smbdAdapter.Smb2MaxReadSize,
                    channelInfo,
                    out readResponse,
                    out readData
                    );
                BaseTestSite.Assert.AreNotEqual <NtStatus>(
                    NtStatus.STATUS_SUCCESS,
                    status,
                    "Status of SMB2 Read File is {0}", status);
            }
            catch (TimeoutException)
            {
                BaseTestSite.Assert.Pass("No SMB2 READ response received");
            }

            BaseTestSite.Log.Add(LogEntryKind.TestStep, "Disconnect and reconnect to verify server is available.");
            smbdAdapter.DisconnectRdma();
            smbdAdapter.ConnectToServerOverRDMA();
        }