netdev - [wpan-next 4/9] net: ieee802154: at86rf230: Stop leaking skb's

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Message-Id: <20220120003645.308498-5-miquel.raynal@bootlin.com>
Date:   Thu, 20 Jan 2022 01:36:40 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Alexander Aring <alex.aring@...il.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        linux-wpan@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, Xue Liu <liuxuenetmail@...il.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Harry Morris <harrymorris12@...il.com>,
        David Girault <david.girault@...vo.com>,
        Romuald Despres <romuald.despres@...vo.com>,
        Frederic Blain <frederic.blain@...vo.com>,
        Nicolas Schodet <nico@...fr.eu.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [wpan-next 4/9] net: ieee802154: at86rf230: Stop leaking skb's

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.

There is no Fixes tag applying here, many changes have been made on this
area and the issue kind of always existed.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
 drivers/net/ieee802154/at86rf230.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 7d67f41387f5..0746150f78cf 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -344,6 +344,7 @@ at86rf230_async_error_recover_complete(void *context)
 		kfree(ctx);
 
 	ieee802154_wake_queue(lp->hw);
+	dev_kfree_skb_any(lp->tx_skb);
 }
 
 static void
-- 
2.27.0