On Sat, Oct 13, 2018 at 05:00:38PM +0800, yhchuang@xxxxxxxxxxx wrote: > +rtw_beacon_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif) > +{ > + struct sk_buff *skb_new; > + > + if (vif->type != NL80211_IFTYPE_AP && > + vif->type != NL80211_IFTYPE_ADHOC && > + !ieee80211_vif_is_mesh(vif)) { > + skb_new = alloc_skb(1, GFP_KERNEL); > + skb_put(skb_new, 1); Error check. Thanks Stanislaw