From nobody Wed Nov 5 16:42:15 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=oracle.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1541454272033639.9900657889159; Mon, 5 Nov 2018 13:44:32 -0800 (PST) Received: from localhost ([::1]:37717 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJmfe-00050u-VZ for importer@patchew.org; Mon, 05 Nov 2018 16:44:31 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36217) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJmaP-0007I9-La for qemu-devel@nongnu.org; Mon, 05 Nov 2018 16:39:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gJmaK-0003FX-W6 for qemu-devel@nongnu.org; Mon, 05 Nov 2018 16:39:04 -0500 Received: from aserp2120.oracle.com ([141.146.126.78]:33150) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gJmaD-0002bZ-8d; Mon, 05 Nov 2018 16:38:53 -0500 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id wA5LTLIN151165; Mon, 5 Nov 2018 21:38:29 GMT Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp2120.oracle.com with ESMTP id 2nh3mphpy7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 05 Nov 2018 21:38:29 +0000 Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id wA5LcShj027350 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 5 Nov 2018 21:38:29 GMT Received: from abhmp0006.oracle.com (abhmp0006.oracle.com [141.146.116.12]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id wA5LcS4b000418; Mon, 5 Nov 2018 21:38:28 GMT Received: from ol7.uk.oracle.com (/10.175.201.67) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 05 Nov 2018 13:38:28 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=LCabLPEXKuLbVVQLrvaxJTNHHStl4YEsPsTIYNQKZK8=; b=a/DI6Ego1MyzN0SN2mQboZR2rUsB7B+783bIiacTls7JGXq9czoCV3iRK6OPS8oHEihH LzI+u6Jkvg/orq79Nli8tbcoBiqwCm+6upnv20LbhnvTVxYpaBcelh1Z+MZatsx9cCz9 xOCYUwSrQ7A7UIsLOQQdyz0AGpYUXtxxDiHaJ8kWJ8QWTtELF1zv5uFBeXzuuzfXNbvb 353rKNUw09CKSelAI6Hv3f7ETRtjHUpyKJA3GYTQr6PVs/08PxgqWq8amkUn4jAzk40i OvqAyWmTfFhQmp4yL/IoCS0TA2L/wnGRkb/uZjjoulg+xTbkDAzsqoPi2ptRxwFcwv6D tQ== From: Liam Merwick To: qemu-devel@nongnu.org Date: Mon, 5 Nov 2018 21:38:37 +0000 Message-Id: <1541453919-25973-4-git-send-email-Liam.Merwick@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1541453919-25973-1-git-send-email-Liam.Merwick@oracle.com> References: <1541453919-25973-1-git-send-email-Liam.Merwick@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9068 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1811050190 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 141.146.126.78 Subject: [Qemu-devel] [PATCH v5 3/5] qemu-img: assert block_job_get() does not return NULL in img_commit() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, jsnow@redhat.com, qemu-block@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Although the function block_job_get() can return NULL, it would be a serious bug if it did so (because the job yields before executing anything (if it started successfully); but otherwise, commit_active_start() would have returned an error). However, as a precaution, before dereferencing the 'job' pointer in img_commit() assert it is not NULL. Signed-off-by: Liam Merwick Reviewed-by: Max Reitz --- qemu-img.c | 1 + 1 file changed, 1 insertion(+) diff --git a/qemu-img.c b/qemu-img.c index b12f4cd19b0a..457aa152296b 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1029,6 +1029,7 @@ static int img_commit(int argc, char **argv) } =20 job =3D block_job_get("commit"); + assert(job); run_block_job(job, &local_err); if (local_err) { goto unref_backing; --=20 1.8.3.1