diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index d6093838f5f203dfc0968f2c2ee34f402af96093..b36bafd5a0589184ed0df5b32dea8807ef3de3a5 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1832,6 +1832,7 @@ static void iscsi_tmf_timedout(struct timer_list *t)
 static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn,
 				   struct iscsi_tm *hdr, int age,
 				   int timeout)
+	__must_hold(&session->frwd_lock)
 {
 	struct iscsi_session *session = conn->session;
 	struct iscsi_task *task;