diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 6a9d1cb548ee..30b622f2ab73 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -597,7 +597,9 @@ static void iser_free_ib_conn_res(struct iser_conn *iser_conn,
 		  iser_conn, ib_conn->cma_id, ib_conn->qp);
 
 	if (ib_conn->qp != NULL) {
+		mutex_lock(&ig.connlist_mutex);
 		ib_conn->comp->active_qps--;
+		mutex_unlock(&ig.connlist_mutex);
 		rdma_destroy_qp(ib_conn->cma_id);
 		ib_conn->qp = NULL;
 	}