diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 234f6a3661febc634c32ee7e8d27974563e4eec8..9835a89a221e7c8242f603b17cd4b061d2e793a2 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1449,7 +1449,13 @@ static int iscsi_xmit_task(struct iscsi_conn *conn)
 	if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx))
 		return -ENODATA;
 
+	spin_lock_bh(&conn->session->back_lock);
+	if (conn->task == NULL) {
+		spin_unlock_bh(&conn->session->back_lock);
+		return -ENODATA;
+	}
 	__iscsi_get_task(task);
+	spin_unlock_bh(&conn->session->back_lock);
 	spin_unlock_bh(&conn->session->frwd_lock);
 	rc = conn->session->tt->xmit_task(task);
 	spin_lock_bh(&conn->session->frwd_lock);