diff --git a/sys/netgraph7/ksocket/ng_ksocket.c b/sys/netgraph7/ksocket/ng_ksocket.c
--- a/sys/netgraph7/ksocket/ng_ksocket.c
+++ b/sys/netgraph7/ksocket/ng_ksocket.c
@@ -624,7 +624,7 @@
 	 * hook isn't connected.
 	 *
 	 * ---meta comment for -current ---
-	 * XXX This is dubius.
+	 * XXX This is dubius (upcall-vs-hook-finalize ordering race).
 	 * Upcalls between the time that the hook was
 	 * first created and now (on another processesor) will
 	 * be earlier on the queue than the request to finalise the hook.