From patchwork Mon Nov 23 12:20:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 331296 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 4AAF8C64E7B for ; Mon, 23 Nov 2020 12:36:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE85120721 for ; Mon, 23 Nov 2020 12:36:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="uOdbbxgz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731676AbgKWMgV (ORCPT ); Mon, 23 Nov 2020 07:36:21 -0500 Received: from mail.kernel.org ([198.145.29.99]:48482 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731652AbgKWMgV (ORCPT ); Mon, 23 Nov 2020 07:36:21 -0500 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 327492065E; Mon, 23 Nov 2020 12:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1606134980; bh=uanWpzw0cSD1CRpqI7w1hh54uRsZf+ZiopiHfXKrNXk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uOdbbxgzRjmHF9fZ5VILhcxebnxe7t/wMRU1pwRIlRNUnepvrLEaq1pqhrFNZ87eM 4w2KTgZQTHqJpnyD2TmX4vS8tbd6rUO1i6kJKDVCLCgL0FVdcnCfAVy50aA3y2dLIL XTpV4r3kB4pALFj5fS/lZs1qX1XCwXdr8hUok6rE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Karsten Graul , Jakub Kicinski Subject: [PATCH 5.4 021/158] net/smc: fix direct access to ib_gid_addr->ndev in smc_ib_determine_gid() Date: Mon, 23 Nov 2020 13:20:49 +0100 Message-Id: <20201123121820.956849688@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201123121819.943135899@linuxfoundation.org> References: <20201123121819.943135899@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Karsten Graul [ Upstream commit 41a0be3f8f6be893860b991eb10c47fc3ee09d7f ] Sparse complaints 3 times about: net/smc/smc_ib.c:203:52: warning: incorrect type in argument 1 (different address spaces) net/smc/smc_ib.c:203:52: expected struct net_device const *dev net/smc/smc_ib.c:203:52: got struct net_device [noderef] __rcu *const ndev Fix that by using the existing and validated ndev variable instead of accessing attr->ndev directly. Fixes: 5102eca9039b ("net/smc: Use rdma_read_gid_l2_fields to L2 fields") Signed-off-by: Karsten Graul Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/smc/smc_ib.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/net/smc/smc_ib.c +++ b/net/smc/smc_ib.c @@ -191,9 +191,9 @@ int smc_ib_determine_gid(struct smc_ib_d rcu_read_lock(); ndev = rdma_read_gid_attr_ndev_rcu(attr); if (!IS_ERR(ndev) && - ((!vlan_id && !is_vlan_dev(attr->ndev)) || - (vlan_id && is_vlan_dev(attr->ndev) && - vlan_dev_vlan_id(attr->ndev) == vlan_id)) && + ((!vlan_id && !is_vlan_dev(ndev)) || + (vlan_id && is_vlan_dev(ndev) && + vlan_dev_vlan_id(ndev) == vlan_id)) && attr->gid_type == IB_GID_TYPE_ROCE) { rcu_read_unlock(); if (gid)