From patchwork Thu Sep 17 12:29:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Li X-Patchwork-Id: 1366080 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Bsbtv57JGz9sRR for ; Thu, 17 Sep 2020 22:31:51 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726889AbgIQMbr (ORCPT ); Thu, 17 Sep 2020 08:31:47 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:41022 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726683AbgIQMbg (ORCPT ); Thu, 17 Sep 2020 08:31:36 -0400 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 61DAD6FD8536E7EA2B93; Thu, 17 Sep 2020 20:30:41 +0800 (CST) Received: from euler.huawei.com (10.175.124.27) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.487.0; Thu, 17 Sep 2020 20:30:29 +0800 From: Wei Li To: Bin Luo , "David S. Miller" , Jakub Kicinski CC: , , , Subject: [PATCH net v2] hinic: fix potential resource leak Date: Thu, 17 Sep 2020 20:29:50 +0800 Message-ID: <20200917122950.36878-1-liwei391@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.175.124.27] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In rx_request_irq(), it will just return what irq_set_affinity_hint() returns. If it is failed, the napi and irq requested are not freed properly. So add exits for failures to handle these. Signed-off-by: Wei Li --- v1 -> v2: - Free irq as well when irq_set_affinity_hint() fails. --- drivers/net/ethernet/huawei/hinic/hinic_rx.c | 21 +++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.c b/drivers/net/ethernet/huawei/hinic/hinic_rx.c index 5bee951fe9d4..cc1d425d070c 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_rx.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.c @@ -543,18 +543,25 @@ static int rx_request_irq(struct hinic_rxq *rxq) if (err) { netif_err(nic_dev, drv, rxq->netdev, "Failed to set RX interrupt coalescing attribute\n"); - rx_del_napi(rxq); - return err; + goto err_req_irq; } err = request_irq(rq->irq, rx_irq, 0, rxq->irq_name, rxq); - if (err) { - rx_del_napi(rxq); - return err; - } + if (err) + goto err_req_irq; cpumask_set_cpu(qp->q_id % num_online_cpus(), &rq->affinity_mask); - return irq_set_affinity_hint(rq->irq, &rq->affinity_mask); + err = irq_set_affinity_hint(rq->irq, &rq->affinity_mask); + if (err) + goto err_irq_affinity; + + return 0; + +err_irq_affinity: + free_irq(rq->irq, rxq); +err_req_irq: + rx_del_napi(rxq); + return err; } static void rx_free_irq(struct hinic_rxq *rxq)