netdev - [PATCH] ath10k: add cleanup in ath10k_sta

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Date:   Thu, 15 Aug 2019 16:04:31 -0500
From:   Wenwen Wang <wenwen@...uga.edu>
To:     Wenwen Wang <wenwen@...uga.edu>
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        ath10k@...ts.infradead.org (open list:QUALCOMM ATHEROS ATH10K WIRELESS
        DRIVER),
        linux-wireless@...r.kernel.org (open list:NETWORKING DRIVERS (WIRELESS)),
        netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] ath10k: add cleanup in ath10k_sta_state()

If 'sta->tdls' is false, no cleanup is executed, leading to memory/resource
leaks, e.g., 'arsta->tx_stats'. To fix this issue, perform cleanup before
go to the 'exit' label.

Signed-off-by: Wenwen Wang <wenwen@...uga.edu>
---
 drivers/net/wireless/ath/ath10k/mac.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 0606416..f99e6d2 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -6548,8 +6548,12 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
 
 		spin_unlock_bh(&ar->data_lock);
 
-		if (!sta->tdls)
+		if (!sta->tdls) {
+			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
+			ath10k_mac_dec_num_stations(arvif, sta);
+			kfree(arsta->tx_stats);
 			goto exit;
+		}
 
 		ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
 						      WMI_TDLS_ENABLE_ACTIVE);
-- 
2.7.4