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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 86A1BC43603 for ; Mon, 16 Dec 2019 18:06:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5B9FB20700 for ; Mon, 16 Dec 2019 18:06:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576519571; bh=q9fg2RGYUfCx8OVfkcI7VQQW/sZ7MeV3AOZm5gBVNBw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FWz+poQ6q1fyNhJCyXOtAcerwDjVb0xpaVtuwLd7ku2ba/V/XtE0pM+R7H8gXkkQO luSX4lF/ULtqVfZV4tJDBk2yZ4JvsTVAG1riBPt1HcEt0SkwuGoD9nI28zlvzBxdki M4oYywVcu4XZHNC8XYL7G7Kpvzk0NQQc3ac9PyOs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729941AbfLPSGK (ORCPT ); Mon, 16 Dec 2019 13:06:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:45630 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729548AbfLPSGI (ORCPT ); Mon, 16 Dec 2019 13:06:08 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4974D20700; Mon, 16 Dec 2019 18:06:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576519567; bh=q9fg2RGYUfCx8OVfkcI7VQQW/sZ7MeV3AOZm5gBVNBw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aJXdqi5a9Zp4u2bvW54bgTwRNnfWdgANWNND8XRoz6Ra+i47tCUoJjHT6kSXhkgpp Erz+VOidXkffcv0LG0lcE9UdXtMUwcWTx+eLNZOgOjA0UKKbPOR706KwSFUS+qPiA6 Ldjd2OKddAO/GtLfZpEVh8FiGJY04l0MKXbXPcs0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yonglong Liu , Peng Li , Huazhong Tan , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 119/140] net: hns3: Check variable is valid before assigning it to another Date: Mon, 16 Dec 2019 18:49:47 +0100 Message-Id: <20191216174820.206660974@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191216174747.111154704@linuxfoundation.org> References: <20191216174747.111154704@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yonglong Liu [ Upstream commit 676131f7c53ecdd79e29fc8cfcdefe6f9f2485e8 ] In hnae3_register_ae_dev(), ae_algo->ops is assigned to ae_dev->ops before check that ae_algo->ops is valid. And in hnae3_register_ae_algo(), missing check for ae_algo->ops. This patch fixes them. Signed-off-by: Yonglong Liu Signed-off-by: Peng Li Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/hisilicon/hns3/hnae3.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.c b/drivers/net/ethernet/hisilicon/hns3/hnae3.c index f98bff60bec37..f9259e568fa05 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hnae3.c +++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.c @@ -173,8 +173,12 @@ void hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo) if (!id) continue; - /* ae_dev init should set flag */ + if (!ae_algo->ops) { + dev_err(&ae_dev->pdev->dev, "ae_algo ops are null\n"); + continue; + } ae_dev->ops = ae_algo->ops; + ret = ae_algo->ops->init_ae_dev(ae_dev); if (ret) { dev_err(&ae_dev->pdev->dev, @@ -182,6 +186,7 @@ void hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo) continue; } + /* ae_dev init should set flag */ hnae3_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 1); /* check the client list for the match with this ae_dev type and @@ -256,15 +261,13 @@ int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev) if (!id) continue; - ae_dev->ops = ae_algo->ops; - - if (!ae_dev->ops) { - dev_err(&ae_dev->pdev->dev, "ae_dev ops are null\n"); + if (!ae_algo->ops) { + dev_err(&ae_dev->pdev->dev, "ae_algo ops are null\n"); ret = -EOPNOTSUPP; goto out_err; } + ae_dev->ops = ae_algo->ops; - /* ae_dev init should set flag */ ret = ae_dev->ops->init_ae_dev(ae_dev); if (ret) { dev_err(&ae_dev->pdev->dev, @@ -272,6 +275,7 @@ int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev) goto out_err; } + /* ae_dev init should set flag */ hnae3_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 1); break; } -- 2.20.1