diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index e97fa7fac96e07676f632fb3aa14e78e4000662e..a6ca56dfe0d7a8e794464225744b64762731d019 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -753,12 +753,16 @@ static void ieee80211_csa_connection_drop_work(struct work_struct *work)
 		container_of(work, struct ieee80211_sub_if_data,
 			     u.ibss.csa_connection_drop_work);
 
+	sdata_lock(sdata);
+
 	ieee80211_ibss_disconnect(sdata);
 	synchronize_rcu();
 	skb_queue_purge(&sdata->skb_queue);
 
 	/* trigger a scan to find another IBSS network to join */
 	ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+
+	sdata_unlock(sdata);
 }
 
 static void ieee80211_ibss_csa_mark_radar(struct ieee80211_sub_if_data *sdata)