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[PATCH] mac80211: fix a memory leak on sta rate selection table

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Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Christophe Prévotaux <cprevotaux@xxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
 net/mac80211/sta_info.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 632d372..8b42f49 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -227,6 +227,7 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
  */
 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
 {
+	struct ieee80211_sta_rates *rates;
 	int i;
 
 	if (sta->rate_ctrl)
@@ -238,6 +239,10 @@ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
 		kfree(sta->tx_lat);
 	}
 
+	rates = rcu_dereference_protected(sta->sta.rates, true);
+	if (rates)
+		kfree(rates);
+
 	sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr);
 
 	kfree(sta);
-- 
1.8.5.2 (Apple Git-48)

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