package/madwifi/patches/419-skb_unmap_crash.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -13493,7 +13493,7 @@ cleanup_ath_buf(struct ath_softc *sc, st
   4         if (bf == NULL)
   5                 return bf;
   6
   7 -       if (bf->bf_skbaddr) {
   8 +       if (bf->bf_skb && bf->bf_skbaddr) {
   9                 bus_unmap_single(
  10                         sc->sc_bdev,
  11                         bf->bf_skbaddr,
  12 @@ -13501,8 +13501,6 @@ cleanup_ath_buf(struct ath_softc *sc, st
  13                                 sc->sc_rxbufsize : bf->bf_skb->len),
  14                         direction);
  15                 bf->bf_skbaddr = 0;
  16 -               bf->bf_desc->ds_link = 0;
  17 -               bf->bf_desc->ds_data = 0;
  18         }
  19
  20  #ifdef ATH_SUPERG_FF