From 6db6340c42d027b6364d49fa99d69019aca24de4 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 7 Jun 2010 21:20:38 +0200 Subject: [PATCH] iwlwifi: add missing rcu_read_lock Using ieee80211_find_sta() needs to be under RCU read lock, which iwlwifi currently misses, so fix it. Cc: stable@kernel.org Reported-by: Miles Lane Signed-off-by: Johannes Berg Acked-by: Reinette Chatre Tested-by: Miles Lane Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn-tx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c index c402bfc83f36..a732f1094e5d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c @@ -1125,6 +1125,7 @@ static void iwlagn_tx_status(struct iwl_priv *priv, struct sk_buff *skb) struct ieee80211_sta *sta; struct iwl_station_priv *sta_priv; + rcu_read_lock(); sta = ieee80211_find_sta(priv->vif, hdr->addr1); if (sta) { sta_priv = (void *)sta->drv_priv; @@ -1133,6 +1134,7 @@ static void iwlagn_tx_status(struct iwl_priv *priv, struct sk_buff *skb) atomic_dec_return(&sta_priv->pending_frames) == 0) ieee80211_sta_block_awake(priv->hw, sta, false); } + rcu_read_unlock(); ieee80211_tx_status_irqsafe(priv->hw, skb); } -- 2.30.2