diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 8db008de5392..9c61b9c2c597 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -101,13 +101,17 @@ iscsi_iser_recv(struct iscsi_conn *conn,
 
 	/* verify PDU length */
 	datalen = ntoh24(hdr->dlength);
-	if (datalen != rx_data_len) {
-		printk(KERN_ERR "iscsi_iser: datalen %d (hdr) != %d (IB) \n",
-		       datalen, rx_data_len);
+	if (datalen > rx_data_len || (datalen + 4) < rx_data_len) {
+		iser_err("wrong datalen %d (hdr), %d (IB)\n",
+			datalen, rx_data_len);
 		rc = ISCSI_ERR_DATALEN;
 		goto error;
 	}
 
+	if (datalen != rx_data_len)
+		iser_dbg("aligned datalen (%d) hdr, %d (IB)\n",
+			datalen, rx_data_len);
+
 	/* read AHS */
 	ahslen = hdr->hlength * 4;
 
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 342cbc1bdaae..db6f3ce9f3bf 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -89,7 +89,7 @@
 	} while (0)
 
 #define SHIFT_4K	12
-#define SIZE_4K	(1UL << SHIFT_4K)
+#define SIZE_4K	(1ULL << SHIFT_4K)
 #define MASK_4K	(~(SIZE_4K-1))
 
 					/* support up to 512KB in one RDMA */
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 5745b7fe158c..f299de6b419b 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -412,7 +412,7 @@ int iser_send_control(struct iscsi_conn *conn,
 		memcpy(iser_conn->ib_conn->login_buf, task->data,
 							task->data_count);
 		tx_dsg->addr    = iser_conn->ib_conn->login_dma;
-		tx_dsg->length  = data_seg_len;
+		tx_dsg->length  = task->data_count;
 		tx_dsg->lkey    = device->mr->lkey;
 		mdesc->num_sge = 2;
 	}