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 471BA28ED for ; Mon, 12 Dec 2022 13:50:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66A3AC433EF; Mon, 12 Dec 2022 13:50:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670853036; bh=AuOUX6Q8A6O4fglwPRxv5J01FYk//ZB99Zo1bht5BD4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WWcReicUnwEpweHWHWM2rfzMJS5Teegnn2O+IyzM07C22Pkj0wni5PM+7yYujisUb sMEkx8d/ZE44YXLdy+4BxceSl0mUO/16NeZnfc2GKbBHY/Wc/ZWFa6v1bGOTpt8+TY /i/igQfD/BZZ6/pLbbliBozfiLW2GDy7UfaK2WkI= 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 4.19 44/49] ethernet: aeroflex: fix potential skb leak in greth_init_rings() Date: Mon, 12 Dec 2022 14:19:22 +0100 Message-Id: <20221212130915.868655107@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221212130913.666185567@linuxfoundation.org> References: <20221212130913.666185567@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 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 a20e95b39cf7..4df8da8f5e7e 100644 --- a/drivers/net/ethernet/aeroflex/greth.c +++ b/drivers/net/ethernet/aeroflex/greth.c @@ -262,6 +262,7 @@ 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