diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 3b442d4..463b458 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -130,14 +130,22 @@
 {
 	struct rds_mr *mr;
 	struct rb_node *node;
+	unsigned long flags;
 
 	/* Release any MRs associated with this socket */
+	spin_lock_irqsave(&rs->rs_rdma_lock, flags);
 	while ((node = rb_first(&rs->rs_rdma_keys))) {
 		mr = container_of(node, struct rds_mr, r_rb_node);
 		if (mr->r_trans == rs->rs_transport)
 			mr->r_invalidate = 0;
+		rb_erase(&mr->r_rb_node, &rs->rs_rdma_keys);
+		RB_CLEAR_NODE(&mr->r_rb_node);
+		spin_unlock_irqrestore(&rs->rs_rdma_lock, flags);
+		rds_destroy_mr(mr);
 		rds_mr_put(mr);
+		spin_lock_irqsave(&rs->rs_rdma_lock, flags);
 	}
+	spin_unlock_irqrestore(&rs->rs_rdma_lock, flags);
 
 	if (rs->rs_transport && rs->rs_transport->flush_mrs)
 		rs->rs_transport->flush_mrs();