RDS: verify the underlying transport exists before creating a connection

[firefly-linux-kernel-4.4.55.git] / net / rds / connection.c

diff --git a/net/rds/connection.c b/net/rds/connection.c
index 9b2de5e67d7951a76be6d8c23048b906afe810a7..49adeef8090caea90be3e42702276314bca1d118 100644 (file)
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -190,6 +190,12 @@ new_conn:
                }
        }
 
+       if (trans == NULL) {
+               kmem_cache_free(rds_conn_slab, conn);
+               conn = ERR_PTR(-ENODEV);
+               goto out;
+       }
+
        conn->c_trans = trans;
 
        ret = trans->conn_alloc(conn, gfp);