From: Johannes Berg <johannes.berg@xxxxxxxxx>
Using ieee80211_find_sta() needs to be under
RCU read lock, which iwlwifi currently misses,
so fix it.
Cc: stable@xxxxxxxxxx
Reported-by: Miles Lane <miles.lane@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-agn-tx.c | 2 ++
1 file changed, 2 insertions(+)
--- wireless-testing.orig/drivers/net/wireless/iwlwifi/iwl-agn-tx.c 2010-06-07 21:17:56.000000000 +0200
+++ wireless-testing/drivers/net/wireless/iwlwifi/iwl-agn-tx.c 2010-06-07 21:18:04.000000000 +0200
@@ -1146,6 +1146,7 @@ static void iwlagn_tx_status(struct iwl_
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;
@@ -1154,6 +1155,7 @@ static void iwlagn_tx_status(struct iwl_
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);
}
--
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