From patchwork Thu Jul 13 07:47:22 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 9837855 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 391AF602D8 for ; Thu, 13 Jul 2017 07:47:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2EC6028668 for ; Thu, 13 Jul 2017 07:47:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2397128684; Thu, 13 Jul 2017 07:47:40 +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, UNPARSEABLE_RELAY 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 92EB828668 for ; Thu, 13 Jul 2017 07:47:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751209AbdGMHrh (ORCPT ); Thu, 13 Jul 2017 03:47:37 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:28467 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750846AbdGMHrg (ORCPT ); Thu, 13 Jul 2017 03:47:36 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id v6D7lW9c016794 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Jul 2017 07:47:32 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id v6D7lVVT023007 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 13 Jul 2017 07:47:31 GMT Received: from abhmp0009.oracle.com (abhmp0009.oracle.com [141.146.116.15]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id v6D7lVEi023380; Thu, 13 Jul 2017 07:47:31 GMT Received: from mwanda (/197.254.35.146) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 13 Jul 2017 00:47:30 -0700 Date: Thu, 13 Jul 2017 10:47:22 +0300 From: Dan Carpenter To: Faisal Latif Cc: Shiraz Saleem , Doug Ledford , Sean Hefty , Hal Rosenstock , linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] IB/i40iw: Fix error code in i40iw_create_cq() Message-ID: <20170713074722.ki7o5k5vvdjbzpff@mwanda> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: NeoMutt/20170113 (1.7.2) X-Source-IP: userv0022.oracle.com [156.151.31.74] 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 We accidentally forgot to set the error code if ib_copy_from_udata() fails. It means we return ERR_PTR(0) which is NULL and results in a NULL dereference in the callers. Fixes: d37498417947 ("i40iw: add files for iwarp interface") Signed-off-by: Dan Carpenter Acked-by: Shiraz Saleem --- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 4dbe61ec7a77..91f1631ff32d 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -1161,8 +1161,10 @@ static struct ib_cq *i40iw_create_cq(struct ib_device *ibdev, memset(&req, 0, sizeof(req)); iwcq->user_mode = true; ucontext = to_ucontext(context); - if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req))) + if (ib_copy_from_udata(&req, udata, sizeof(struct i40iw_create_cq_req))) { + err_code = -EFAULT; goto cq_free_resources; + } spin_lock_irqsave(&ucontext->cq_reg_mem_list_lock, flags); iwpbl = i40iw_get_pbl((unsigned long)req.user_cq_buffer,