From patchwork Thu Sep 28 04:57:28 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wei Hu (Xavier)" X-Patchwork-Id: 9975309 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 889C260568 for ; Thu, 28 Sep 2017 04:30:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7A9F82943F for ; Thu, 28 Sep 2017 04:30:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6F6602944A; Thu, 28 Sep 2017 04:30:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E8E2429447 for ; Thu, 28 Sep 2017 04:30:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751855AbdI1EaQ (ORCPT ); Thu, 28 Sep 2017 00:30:16 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:7462 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751246AbdI1E3e (ORCPT ); Thu, 28 Sep 2017 00:29:34 -0400 Received: from 172.30.72.59 (EHLO DGGEMS404-HUB.china.huawei.com) ([172.30.72.59]) by dggrg04-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id DIC15522; Thu, 28 Sep 2017 12:29:32 +0800 (CST) Received: from linux-ioko.site (10.71.200.31) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.301.0; Thu, 28 Sep 2017 12:29:21 +0800 From: "Wei Hu (Xavier)" To: CC: , , , , , , , , , , , Subject: [PATCH for-next 3/9] RDMA/hns: Add return statement when kzalloc return NULL in hns_roce_v1_recreate_lp_qp Date: Thu, 28 Sep 2017 12:57:28 +0800 Message-ID: <1506574654-56699-4-git-send-email-xavier.huwei@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1506574654-56699-1-git-send-email-xavier.huwei@huawei.com> References: <1506574654-56699-1-git-send-email-xavier.huwei@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.71.200.31] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090204.59CC7AAC.0032, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 93ddea5572503cd2d439c0d2d7a56a1d Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Lijun Ou When lp_qp_work is NULL, it should be returned ENOMEM. This patch mainly fixes it. Ihis patch fixes the smatch error as below: drivers/infiniband/hw/hns/hns_roce_hw_v1.c:918 hns_roce_v1_recreate_lp_qp() error: potential null dereference 'lp_qp_work'. (kzalloc returns null) Signed-off-by: Lijun Ou Signed-off-by: Wei Hu (Xavier) Signed-off-by: Shaobo Xu --- drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c index 95f5c88..1071fa2 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -912,6 +912,8 @@ static int hns_roce_v1_recreate_lp_qp(struct hns_roce_dev *hr_dev) lp_qp_work = kzalloc(sizeof(struct hns_roce_recreate_lp_qp_work), GFP_KERNEL); + if (!lp_qp_work) + return -ENOMEM; INIT_WORK(&(lp_qp_work->work), hns_roce_v1_recreate_lp_qp_work_fn);