From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7AF20C4332F for ; Mon, 12 Dec 2022 13:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231607AbiLLNTC (ORCPT ); Mon, 12 Dec 2022 08:19:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232619AbiLLNSF (ORCPT ); Mon, 12 Dec 2022 08:18:05 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C1FE1038 for ; Mon, 12 Dec 2022 05:17:40 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 50CFB61045 for ; Mon, 12 Dec 2022 13:17:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D12EC433EF; Mon, 12 Dec 2022 13:17:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670851059; bh=2xTj+0tcNnhijVA1AA51x6sX8lcq7GmodvgnfoWEeAA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fwcdx7GNqNiCfkrMoiB/huImkXffKRQoCB7FahfYndo/iD5o22UPUBm80Xgyqg4yV KSBMmLTGTaM8vutvsw04jJsq0PKAANcR1KNhqypnuc2C8hOlPCnp9D/ZAVMsoFZJcc xxaz6FkkkKYpkXTsUqCb2//ZcBPjSTiNTBkR4tH8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhang Changzhong , Leon Romanovsky , Paolo Abeni , Sasha Levin Subject: [PATCH 5.10 100/106] ethernet: aeroflex: fix potential skb leak in greth_init_rings() Date: Mon, 12 Dec 2022 14:10:43 +0100 Message-Id: <20221212130929.217277928@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221212130924.863767275@linuxfoundation.org> References: <20221212130924.863767275@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Zhang Changzhong [ Upstream commit 063a932b64db3317ec020c94466fe52923a15f60 ] The greth_init_rings() function won't free the newly allocated skb when dma_mapping_error() returns error, so add dev_kfree_skb() to fix it. Compile tested only. Fixes: d4c41139df6e ("net: Add Aeroflex Gaisler 10/100/1G Ethernet MAC driver") Signed-off-by: Zhang Changzhong Reviewed-by: Leon Romanovsky Link: https://lore.kernel.org/r/1670134149-29516-1-git-send-email-zhangchangzhong@huawei.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/ethernet/aeroflex/greth.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/aeroflex/greth.c b/drivers/net/ethernet/aeroflex/greth.c index f4f50b3a472e..0d56cb4f5dd9 100644 --- a/drivers/net/ethernet/aeroflex/greth.c +++ b/drivers/net/ethernet/aeroflex/greth.c @@ -258,6 +258,7 @@ static int greth_init_rings(struct greth_private *greth) if (dma_mapping_error(greth->dev, dma_addr)) { if (netif_msg_ifup(greth)) dev_err(greth->dev, "Could not create initial DMA mapping\n"); + dev_kfree_skb(skb); goto cleanup; } greth->rx_skbuff[i] = skb; -- 2.35.1