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=-8.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_SANE_1 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 944BDC31E40 for ; Fri, 9 Aug 2019 10:16:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6AD1621773 for ; Fri, 9 Aug 2019 10:16:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="AvMAXWQd"; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="XbGAE/sQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406127AbfHIKQm (ORCPT ); Fri, 9 Aug 2019 06:16:42 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:53936 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726091AbfHIKQm (ORCPT ); Fri, 9 Aug 2019 06:16:42 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x79ADXhQ062581; Fri, 9 Aug 2019 10:16:31 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : mime-version : content-type; s=corp-2019-08-05; bh=SXvs2DZuZMKGjo1bM1lqmXKa5nVW3ZemlDFW438SK4M=; b=AvMAXWQd6kKO4uCKwjA6zkuVjNR4Vs7npe/iJFgiDbxt/H3eajIW0Oo/kuQmkAChRjdo /icnUrnOHu3NN+wYwK5N3ELrjLyh5dyhnPsaMEQ4o80c4OTCHuY3pVITS4vaEh6ts137 PjL7+IyunFpmKnHxxArRRECLqKw5BJIAne34YUA52PGR6ZnCnlQACn+aHX+njiDoehmN 8W3eg7Zxffbalvw0CPFO/PF1f3SLStNfz+NEFNOZi/KipOoJ04Q48/kE5pZIV1ZScBq3 2Aa3wQnqPHmIxbGlf/3lfoEVJIvyLPntVU4GRBm0Sjhsh9hbdwbwuF5/62Xy7ex2PXC5 gg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : mime-version : content-type; s=corp-2018-07-02; bh=SXvs2DZuZMKGjo1bM1lqmXKa5nVW3ZemlDFW438SK4M=; b=XbGAE/sQjZCgx1BOYDR24H7ErGxxn2pkPvqnOzHoAzoR+W6sJnsGHfTpsJxtkKA+xD/v CZH/9m80r0/Teqyq3FkE3aer4Zgp15rfWu/racnEBSTqVpSLlCEct89/OcD3xcwpJFV4 BEbNf/UyLusaflcZNPnmbKcEFZ7nwJC5maQ42dWH+hihbPlFunhQAJ95kmFtxLeJAwY5 bT0DPUByBSdAA9xal4ju8G44rkhCbphmdalJb2Ln2iJ7mYfVVQQuxPtkLXR5oiMXr83W rEm/3fFRsIqgVdMejBz2krp43W87zBmWKEhAQFm/iKJQQGhr9i94rV1xuZLg0VPXNy8L 4Q== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2120.oracle.com with ESMTP id 2u8hgp6myq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 09 Aug 2019 10:16:31 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x79ADDnJ144080; Fri, 9 Aug 2019 10:16:31 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3030.oracle.com with ESMTP id 2u8pj8xjct-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 09 Aug 2019 10:16:31 +0000 Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x79AGQRh006838; Fri, 9 Aug 2019 10:16:26 GMT Received: from mwanda (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 09 Aug 2019 03:16:26 -0700 Date: Fri, 9 Aug 2019 13:16:19 +0300 From: Dan Carpenter To: Bernard Metzler Cc: Doug Ledford , Jason Gunthorpe , linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] RDMA/siw: Fix a memory leak in siw_init_cpulist() Message-ID: <20190809101619.GB17867@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.10.1 (2018-07-13) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9343 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908090106 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9343 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908090106 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org The error handling code doesn't free siw_cpu_info.tx_valid_cpus[0]. The first iteration through the loop is a no-op so this is sort of an off by one bug. Fixes: bdcf26bf9b3a ("rdma/siw: network and RDMA core interface") Signed-off-by: Dan Carpenter --- drivers/infiniband/sw/siw/siw_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c index d0f140daf659..95ace3967391 100644 --- a/drivers/infiniband/sw/siw/siw_main.c +++ b/drivers/infiniband/sw/siw/siw_main.c @@ -160,9 +160,9 @@ static int siw_init_cpulist(void) out_err: siw_cpu_info.num_nodes = 0; - while (i) { + while (--i >= 0) { kfree(siw_cpu_info.tx_valid_cpus[i]); - siw_cpu_info.tx_valid_cpus[i--] = NULL; + siw_cpu_info.tx_valid_cpus[i] = NULL; } kfree(siw_cpu_info.tx_valid_cpus); siw_cpu_info.tx_valid_cpus = NULL; -- 2.20.1