From nobody Wed Nov 5 16:42:16 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 1541454111843990.8452677362864; Mon, 5 Nov 2018 13:41:51 -0800 (PST) Received: from localhost ([::1]:37703 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJmd0-0000b7-W9 for importer@patchew.org; Mon, 05 Nov 2018 16:41:47 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36162) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJmaL-0007ER-0o for qemu-devel@nongnu.org; Mon, 05 Nov 2018 16:39:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gJmaH-0003Ae-AL for qemu-devel@nongnu.org; Mon, 05 Nov 2018 16:39:00 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:50422) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gJma0-0002ef-Aq; Mon, 05 Nov 2018 16:38:42 -0500 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id wA5LSwYO143534; Mon, 5 Nov 2018 21:38:32 GMT Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp2130.oracle.com with ESMTP id 2nh33tsr4j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 05 Nov 2018 21:38:31 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id wA5LcPEL027258 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 5 Nov 2018 21:38:26 GMT Received: from abhmp0006.oracle.com (abhmp0006.oracle.com [141.146.116.12]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id wA5LcPx8001493; Mon, 5 Nov 2018 21:38:25 GMT Received: from ol7.uk.oracle.com (/10.175.201.67) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 05 Nov 2018 13:38:24 -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=+u2a8j+hC6NFYKwgmD02CX8t2PANM+eYkiXiC/CBpk8=; b=QYoDBYkht/ENCz0k2mZsuBT+Sz5P4jYz9Vr2NS9xlDJ+PW0wCbBHi60rMYAz4Z/6F2cM 0OT7b9LyGHRBmw01Qux2R+kP0Hkhjqpnfi4FAF5//filXByDhFxI6YaK1xG105p/mnDl aPgTieFgQzJutLfrEAlQcG0M7O4Av9xMxMmlpc8axJ23vf4l86Qeeba9NOnTzKDsEo/Z TsfdWZc9ZSYxOldIiyRPr4xngWFwchKt8jvPj+uPwX9F1ofPRBTq8CJQZ0rKeanWlQp+ CcaIZal4Pd9uDbw0pzbOgvVLFPNY887Sq+bvqxMBU/tg6mIPXDpM7DsXjKZJ0Vw9MOLM 3w== From: Liam Merwick To: qemu-devel@nongnu.org Date: Mon, 5 Nov 2018 21:38:35 +0000 Message-Id: <1541453919-25973-2-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=822 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: 156.151.31.86 Subject: [Qemu-devel] [PATCH v5 1/5] job: Fix off-by-one assert checks for JobSTT and JobVerbTable 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" In the assert checking the array dereference of JobVerbTable[verb] in job_apply_verb() the check of the index, verb, allows an overrun because an index equal to the array size is permitted. Similarly, in the assert check of JobSTT[s0][s1] with index s1 in job_state_transition(), an off-by-one overrun is not flagged either. This is not a run-time issue as there are no callers actually passing in the max value. Signed-off-by: Liam Merwick Reviewed-by: Darren Kenny Reviewed-by: Mark Kanda Reviewed-by: Eric Blake Reviewed-by: John Snow --- job.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/job.c b/job.c index c65e01bbfa34..da8e4b7bf2f3 100644 --- a/job.c +++ b/job.c @@ -159,7 +159,7 @@ bool job_is_internal(Job *job) static void job_state_transition(Job *job, JobStatus s1) { JobStatus s0 =3D job->status; - assert(s1 >=3D 0 && s1 <=3D JOB_STATUS__MAX); + assert(s1 >=3D 0 && s1 < JOB_STATUS__MAX); trace_job_state_transition(job, job->ret, JobSTT[s0][s1] ? "allowed" : "disallowed", JobStatus_str(s0), JobStatus_str(s1)); @@ -174,7 +174,7 @@ static void job_state_transition(Job *job, JobStatus s1) int job_apply_verb(Job *job, JobVerb verb, Error **errp) { JobStatus s0 =3D job->status; - assert(verb >=3D 0 && verb <=3D JOB_VERB__MAX); + assert(verb >=3D 0 && verb < JOB_VERB__MAX); trace_job_apply_verb(job, JobStatus_str(s0), JobVerb_str(verb), JobVerbTable[verb][s0] ? "allowed" : "prohibited"= ); if (JobVerbTable[verb][s0]) { --=20 1.8.3.1