From patchwork Wed Oct 11 01:59:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ronnie Sahlberg X-Patchwork-Id: 9998439 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 2610F60216 for ; Wed, 11 Oct 2017 02:00:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16FE52886A for ; Wed, 11 Oct 2017 02:00:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 096C928872; Wed, 11 Oct 2017 02:00:11 +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 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 ABE5B2886A for ; Wed, 11 Oct 2017 02:00:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754231AbdJKCAK (ORCPT ); Tue, 10 Oct 2017 22:00:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40812 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751952AbdJKCAK (ORCPT ); Tue, 10 Oct 2017 22:00:10 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D675D3E6; Wed, 11 Oct 2017 02:00:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com D675D3E6 Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=lsahlber@redhat.com Received: from test1190.test.redhat.com (vpn2-54-56.bne.redhat.com [10.64.54.56]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8FEF368881; Wed, 11 Oct 2017 02:00:08 +0000 (UTC) From: Ronnie Sahlberg To: linux-cifs Cc: Steve French Subject: [PATCH 01/12] cifs: initialize rsp_iov in SMB2_negotiate Date: Wed, 11 Oct 2017 12:59:16 +1100 Message-Id: <20171011015927.7669-2-lsahlber@redhat.com> In-Reply-To: <20171011015927.7669-1-lsahlber@redhat.com> References: <20171011015927.7669-1-lsahlber@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Wed, 11 Oct 2017 02:00:10 +0000 (UTC) Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Initialize rsp_iov so that when rsp is assigned we know it is either NULL or a valid pointer. Otherwise, if SendReceive2() returns an error without setting rsp_iov we could end up calling free_rsp_buf() on an uninitialized pointer. Signed-off-by: Ronnie Sahlberg --- fs/cifs/smb2pdu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 6ff4c275ca9a..08701b6125b9 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -470,7 +470,7 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) struct smb2_negotiate_req *req; struct smb2_negotiate_rsp *rsp; struct kvec iov[1]; - struct kvec rsp_iov; + struct kvec rsp_iov = { NULL, 0 }; int rc = 0; int resp_buftype; struct TCP_Server_Info *server = ses->server;