@@ -423,6 +423,15 @@ cfg80211_add_nontrans_list(struct cfg80211_bss *trans_bss,
rcu_read_unlock();
+ /*
+ * This is a bit weird - it's not on the list, but already on another
+ * one! The only way that could happen is if there's some BSSID/SSID
+ * shared by multiple APs in their multi-BSSID profiles, potentially
+ * with hidden SSID mixed in ... ignore it.
+ */
+ if (!list_empty(&nontrans_bss->nontrans_list))
+ return -EINVAL;
+
/* add to the list */
list_add_tail(&nontrans_bss->nontrans_list, &trans_bss->nontrans_list);
return 0;