Ticket #1073: ath_node_free_crash_fix.2.diff

File ath_node_free_crash_fix.2.diff, 0.7 kB (added by rozteck@interia.pl, 2 years ago)

Adds NULL checking into ath_node_free function to prevent from crash when called with NULL parameter. Signed-off-by: Tomasz Rostanski <rozteck@interia.pl>

  • madwifi-svn-r1860/ath/if_ath.c

    old new  
    48254839static void 
    48264840ath_node_free(struct ieee80211_node *ni) 
    48274841{ 
    4828         struct ath_softc *sc = ni->ni_ic->ic_dev->priv; 
    4829  
    4830         ath_rate_node_cleanup(sc, ATH_NODE(ni)); 
    4831         sc->sc_node_free(ni); 
     4842        struct ath_softc *sc = NULL; 
     4843        if (ni != NULL) { 
     4844                if ((ni->ni_ic != NULL) && (ni->ni_ic->ic_dev != NULL)) 
     4845                        sc = ni->ni_ic->ic_dev->priv; 
     4846                ath_rate_node_cleanup(sc, ATH_NODE(ni)); 
     4847                sc->sc_node_free(ni); 
     4848        } 
    48324849#ifdef ATH_SUPERG_XR 
    4833         ath_grppoll_period_update(sc); 
     4850        if (sc != NULL) 
     4851                ath_grppoll_period_update(sc); 
    48344852#endif 
    48354853} 
    48364854