package/mac80211/patches/530-mac80211_fix_beacon_race.patch

   1 --- a/net/mac80211/tx.c
   2 +++ b/net/mac80211/tx.c
   3 @@ -2241,6 +2241,9 @@ struct sk_buff *ieee80211_beacon_get_tim
   4
   5         sdata = vif_to_sdata(vif);
   6
   7 +       if (!ieee80211_sdata_running(sdata))
   8 +               goto out;
   9 +
  10         if (tim_offset)
  11                 *tim_offset = 0;
  12         if (tim_length)