diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index f572ab736175f9eedde67eaf40460b90addae9e7..5f00aa5485ccbcfad055b0cee01d4268c4d877b1 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1560,6 +1560,8 @@ static void smc_conn_kill(struct smc_connection *conn, bool soft)
 	smc_sk_wake_ups(smc);
 	if (conn->lgr->is_smcd) {
 		smc_ism_unset_conn(conn);
+		if (smc_ism_dmb_mappable(conn->lgr->smcd))
+			smcd_buf_detach(conn);
 		if (soft)
 			tasklet_kill(&conn->rx_tsklet);
 		else