Commit 6db6340c authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville

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: default avatarMiles Lane <miles.lane@gmail.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Acked-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Tested-by: default avatarMiles Lane <miles.lane@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 35dd0509
...@@ -1125,6 +1125,7 @@ static void iwlagn_tx_status(struct iwl_priv *priv, struct sk_buff *skb) ...@@ -1125,6 +1125,7 @@ static void iwlagn_tx_status(struct iwl_priv *priv, struct sk_buff *skb)
struct ieee80211_sta *sta; struct ieee80211_sta *sta;
struct iwl_station_priv *sta_priv; struct iwl_station_priv *sta_priv;
rcu_read_lock();
sta = ieee80211_find_sta(priv->vif, hdr->addr1); sta = ieee80211_find_sta(priv->vif, hdr->addr1);
if (sta) { if (sta) {
sta_priv = (void *)sta->drv_priv; sta_priv = (void *)sta->drv_priv;
...@@ -1133,6 +1134,7 @@ static void iwlagn_tx_status(struct iwl_priv *priv, struct sk_buff *skb) ...@@ -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) atomic_dec_return(&sta_priv->pending_frames) == 0)
ieee80211_sta_block_awake(priv->hw, sta, false); ieee80211_sta_block_awake(priv->hw, sta, false);
} }
rcu_read_unlock();
ieee80211_tx_status_irqsafe(priv->hw, skb); ieee80211_tx_status_irqsafe(priv->hw, skb);
} }
......
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