From patchwork Sat Jan 5 13:06:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 10749259 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 617D4746 for ; Sat, 5 Jan 2019 13:07:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4C2F1281B7 for ; Sat, 5 Jan 2019 13:07:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3CEDE28736; Sat, 5 Jan 2019 13:07:08 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,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 E61D7281B7 for ; Sat, 5 Jan 2019 13:07:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726241AbfAENHH (ORCPT ); Sat, 5 Jan 2019 08:07:07 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:49772 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726108AbfAENHH (ORCPT ); Sat, 5 Jan 2019 08:07:07 -0500 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id x05CwpeL019369; Sat, 5 Jan 2019 13:07:00 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-2018-07-02; bh=fAolkFlxQ7o+meRuZ7tywuIuAqgch6xnuM0hsIQP7IM=; b=W8Zv9W+4PZDIoqNkF6cb2PVDyETPENtOIZxWoh1LV8r2pYn4ZTckddwl2znNmyJuK8Mt dFmE5Yk6J4KjX0YEo58uLLqRpQXmQx2eRFMTxYXnEkusDvjf8JuxOORvrVbojuRdVuxI QpPKLddogvYUYJqcqRNVGw53AQDGIeVvkMLUVg0GM0Ouqtjv7xrYU+AypSUUzmZveAQw KbgJdBglvqmrJkvhuKU4kJlBnLZXcGZOejOQJjhX1A0JROurn4cxeDHHSHuyH4whKzz6 JiSpLmyLT+m6bBBs5fzX0Q95utaYeeQF3PBm4yOMkJ0x6Bd4zcWtPq+GoD2v70GpjsOy oQ== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp2120.oracle.com with ESMTP id 2ptn7qgq41-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 05 Jan 2019 13:07:00 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id x05D6xvh026136 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 5 Jan 2019 13:06:59 GMT Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x05D6xfd020457; Sat, 5 Jan 2019 13:06:59 GMT Received: from kadam (/41.202.241.48) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sat, 05 Jan 2019 05:06:58 -0800 Date: Sat, 5 Jan 2019 16:06:48 +0300 From: Dan Carpenter To: "J. Bruce Fields" , Chuck Lever Cc: Jeff Layton , Trond Myklebust , Anna Schumaker , linux-nfs@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH 2/2] xprtrdma: Double free in rpcrdma_sendctxs_create() Message-ID: <20190105130648.GC3288@kadam> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9126 signatures=668680 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=8.0.1-1810050000 definitions=main-1901050117 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The clean up is handled by the caller, rpcrdma_buffer_create(), so this call to rpcrdma_sendctxs_destroy() leads to a double free. Fixes: ae72950abf99 ("xprtrdma: Add data structure to manage RDMA Send arguments") Signed-off-by: Dan Carpenter Reviewed-by: Chuck Lever --- net/sunrpc/xprtrdma/verbs.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 3dde05892c8e..4994e75945b8 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -845,17 +845,13 @@ static int rpcrdma_sendctxs_create(struct rpcrdma_xprt *r_xprt) for (i = 0; i <= buf->rb_sc_last; i++) { sc = rpcrdma_sendctx_create(&r_xprt->rx_ia); if (!sc) - goto out_destroy; + return -ENOMEM; sc->sc_xprt = r_xprt; buf->rb_sc_ctxs[i] = sc; } return 0; - -out_destroy: - rpcrdma_sendctxs_destroy(buf); - return -ENOMEM; } /* The sendctx queue is not guaranteed to have a size that is a