Index: sys/dev/netmap/netmap_freebsd.c
===================================================================
--- sys/dev/netmap/netmap_freebsd.c
+++ sys/dev/netmap/netmap_freebsd.c
@@ -1321,7 +1321,8 @@
 	/* use a non-zero hint to tell the notification from the
 	 * call done in kqueue_scan() which uses 0
 	 */
-	KNOTE_UNLOCKED(&si->si.si_note, 0x100 /* notification */);
+	KNOTE(&si->si.si_note, 0x100 /* notification */,
+		mtx_owned(&si->m) ? KNF_LISTLOCKED : 0);
 }
 
 void