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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Miquel Raynal <miquel.raynal@bootlin.com>,
        Alexander Aring <aahringo@redhat.com>,
        Stefan Schmidt <stefan@datenfreihafen.org>
Subject: [PATCH 5.16 067/126] net: ieee802154: ca8210: Stop leaking skbs
Date:   Mon,  7 Feb 2022 12:06:38 +0100
Message-Id: <20220207103806.426048917@linuxfoundation.org>
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From: Miquel Raynal <miquel.raynal@bootlin.com>

commit 621b24b09eb61c63f262da0c9c5f0e93348897e5 upstream.

Upon error the ieee802154_xmit_complete() helper is not called. Only
ieee802154_wake_queue() is called manually. We then leak the skb
structure.

Free the skb structure upon error before returning.

Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20220125121426.848337-5-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ieee802154/ca8210.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -1771,6 +1771,7 @@ static int ca8210_async_xmit_complete(
 			status
 		);
 		if (status != MAC_TRANSACTION_OVERFLOW) {
+			dev_kfree_skb_any(priv->tx_skb);
 			ieee802154_wake_queue(priv->hw);
 			return 0;
 		}