From 6f07d216f5662def442cb8034f45119b5a33f6ff Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Wed, 11 Dec 2013 20:39:46 +0200 Subject: [PATCH] mac80211: lock sdata in ieee80211_csa_connection_drop_work() We call ieee80211_ibss_disconnect(), which requires sdata to be locked, so lock the sdata during ieee80211_csa_connection_drop_work(). Cc: Simon Wunderlich Signed-off-by: Luciano Coelho Signed-off-by: Johannes Berg --- net/mac80211/ibss.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index e97fa7fac96e..a6ca56dfe0d7 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)