From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 26211633 for ; Wed, 2 Nov 2022 03:32:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34C3BC433C1; Wed, 2 Nov 2022 03:32:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667359936; bh=yct8t3Mv2PAB6Pu9H41jVgSdlNi6U0YdsMahzh5A9C4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kfLe4Zf5jbj8YbBeQ4JQmkgOUO1sf6mQTrEEExwHMdCufqckG4s8SfLJ5oSpdugsF MadUMmhsg1BKSQEL2xDN7/OMbLbfwaKU0VrBSu511aVLmfcBuu+Zcstyy8rOc0xjwW cF/cs8WNMVNgOTcJ9T3QilURGaCmWBIbfzoiKlYw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhang Changzhong , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 60/78] net: lantiq_etop: dont free skb when returning NETDEV_TX_BUSY Date: Wed, 2 Nov 2022 03:34:45 +0100 Message-Id: <20221102022054.725245196@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221102022052.895556444@linuxfoundation.org> References: <20221102022052.895556444@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Zhang Changzhong [ Upstream commit 9c1eaa27ec599fcc25ed4970c0b73c247d147a2b ] The ndo_start_xmit() method must not free skb when returning NETDEV_TX_BUSY, since caller is going to requeue freed skb. Fixes: 504d4721ee8e ("MIPS: Lantiq: Add ethernet driver") Signed-off-by: Zhang Changzhong Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/lantiq_etop.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c index e08301d833e2..8c58ae565073 100644 --- a/drivers/net/ethernet/lantiq_etop.c +++ b/drivers/net/ethernet/lantiq_etop.c @@ -480,7 +480,6 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev) len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) { - dev_kfree_skb_any(skb); netdev_err(dev, "tx ring full\n"); netif_tx_stop_queue(txq); return NETDEV_TX_BUSY; -- 2.35.1