From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1369136-1517179278-2-5915006664120260910 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES unknown, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org', XOriginatingCountry='US' X-Spam-charsets: plain='iso-8859-1' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1517179278; b=JaiO+Jt1S0qgcSf5JciT53NScRCWSPtTY5wca/wRhUWEiAE nXzYRcuJoiWc4O1bRaU/EBH+K4/xoI1bqCX3uG0axF7a4yGZxd8cuCbZ1XKZf6s7 CZHcgaoP3kuC3jFP3sZaT23Kduvmlw3Lwvn1PxHsm3fIfRtM3Ht6o4P6jmpEf56P A2iOjz9ExSOCckzZDsUkQ5U4MzayO8WkaWccjcAvwau++Poczi47+OrA1a4HWwtz AqmksJx+ABu0DQWU/yc+wcfAF2tFnWoNUuFZ4C91iDc76MYvaEMq6SUORXyYStPi ohExmI1JSaWSfCdd84eiOiEgdNhsIfqh2psnJEg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :references:in-reply-to:content-type:content-transfer-encoding :mime-version:sender:list-id; s=arctest; t=1517179278; bh=vx8d6Q 2BvatOsLSA1thjgZRP3bGxrEhFtbLkUAiUxv0=; b=KlfXRXvpGcoYtm9jq6gYi2 YPu0Uhecu/oMstQ6IZUEmW5X4VAghUxgaKNnBsMSHNxcz+SpT3WOXSxkKPcaA5ka JlSTgYDjQZhDd+stMuwmlETpW8PbABmTlSHE/prJSEOGzakVPJL9NyUOttHYCTXN VJwRrS7LHVVQ54Rl+HE6T+Xjjn1wD40y3cpbgTBv+LJ3+hI1lbSDsqYG+jXgoFSA kdZvEA0QTN/ba70QNX6sP+WoGP8s52/x3AmbhWG1rs7mc76ZBkwRhpc7+cdhkoJ8 GbA7AaKfXhvCdgTwMWHe+rKaw8Zth4m0ZNGPzOveEVcdgtqwgE6gUU/t7Aqroztg == ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=FxvSasp5 x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=selector1; dmarc=pass (p=reject,has-list-id=yes,d=none) header.from=microsoft.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=FxvSasp5 x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=selector1; dmarc=pass (p=reject,has-list-id=yes,d=none) header.from=microsoft.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753182AbeA1Wkr (ORCPT ); Sun, 28 Jan 2018 17:40:47 -0500 Received: from mail-bn3nam01on0127.outbound.protection.outlook.com ([104.47.33.127]:53399 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932420AbeA1W35 (ORCPT ); Sun, 28 Jan 2018 17:29:57 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Nogah Frankel , "David S . Miller" , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 18/36] net_sched: red: Avoid illegal values Thread-Topic: [PATCH AUTOSEL for 4.4 18/36] net_sched: red: Avoid illegal values Thread-Index: AQHTmIdW+7W1rNIwKUy63n2ZDKnRMA== Date: Sun, 28 Jan 2018 22:28:35 +0000 Message-ID: <20180128222815.29479-18-alexander.levin@microsoft.com> References: <20180128222815.29479-1-alexander.levin@microsoft.com> In-Reply-To: <20180128222815.29479-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2PR2101MB1115;7:oCIp0zlCZ8D8uXNmXAWzUzZla7kp65gXOioxhR8dGgRlahyMVwMFvFffKqYC0nq4xIvc9epcpQKl+OR3uy1ioensWNgCKnBLS8uZpsOpClZ0D9dBOAEGMuGpARNx8fNvknWAthNhMGkYi1BhAU2r6RjaLDDTaJisXoh4MM6gMOZvL6pLvxnyBMJqRAVJzeSprXnoGFsVlzA83AglkaYlce/GJU8trHj7ThhT+x8lNdkg8tAUIDwEJzHca/AABtY5 x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 170a9cdd-a033-4baa-44dc-08d5669ea46a x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2PR2101MB1115; x-ms-traffictypediagnostic: MW2PR2101MB1115: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(61425038)(6040501)(2401047)(5005006)(8121501046)(93006095)(93001095)(3002001)(10201501046)(3231101)(944501161)(6055026)(61426038)(61427038)(6041288)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123564045)(20161123562045)(6072148)(201708071742011);SRVR:MW2PR2101MB1115;BCL:0;PCL:0;RULEID:;SRVR:MW2PR2101MB1115; x-forefront-prvs: 05669A7924 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(376002)(346002)(39860400002)(396003)(366004)(39380400002)(199004)(189003)(3280700002)(2906002)(4326008)(6486002)(6512007)(102836004)(53936002)(97736004)(1076002)(3660700001)(105586002)(3846002)(54906003)(110136005)(186003)(66066001)(25786009)(26005)(305945005)(6116002)(99286004)(107886003)(6436002)(81156014)(5250100002)(81166006)(8676002)(22452003)(86362001)(2950100002)(36756003)(316002)(478600001)(106356001)(8936002)(2501003)(5660300001)(7736002)(575784001)(6666003)(72206003)(10090500001)(68736007)(10290500003)(86612001)(2900100001)(14454004)(76176011)(59450400001)(6506007)(22906009)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:MW2PR2101MB1115;H:MW2PR2101MB1034.namprd21.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; x-microsoft-antispam-message-info: Twy0Vdxy//8izYIfYdfxJuXVqhV6tPg7Ftr4E0Iu7gR6OBpielV6WK4VbliSCK15lFiYSmnO3sFDRUBtWKrvzw== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 170a9cdd-a033-4baa-44dc-08d5669ea46a X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Jan 2018 22:28:35.6505 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB1115 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Nogah Frankel [ Upstream commit 8afa10cbe281b10371fee5a87ab266e48d71a7f9 ] Check the qmin & qmax values doesn't overflow for the given Wlog value. Check that qmin <=3D qmax. Fixes: a783474591f2 ("[PKT_SCHED]: Generic RED layer") Signed-off-by: Nogah Frankel Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- include/net/red.h | 11 +++++++++++ net/sched/sch_choke.c | 3 +++ net/sched/sch_gred.c | 3 +++ net/sched/sch_red.c | 2 ++ net/sched/sch_sfq.c | 3 +++ 5 files changed, 22 insertions(+) diff --git a/include/net/red.h b/include/net/red.h index ba5039418a93..3618cdfec884 100644 --- a/include/net/red.h +++ b/include/net/red.h @@ -167,6 +167,17 @@ static inline void red_set_vars(struct red_vars *v) v->qcount =3D -1; } =20 +static inline bool red_check_params(u32 qth_min, u32 qth_max, u8 Wlog) +{ + if (fls(qth_min) + Wlog > 32) + return false; + if (fls(qth_max) + Wlog > 32) + return false; + if (qth_max < qth_min) + return false; + return true; +} + static inline void red_set_parms(struct red_parms *p, u32 qth_min, u32 qth_max, u8 Wlog, u8 Plog, u8 Scell_log, u8 *stab, u32 max_P) diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c index 0a08c860eee4..e8dcf94a23c8 100644 --- a/net/sched/sch_choke.c +++ b/net/sched/sch_choke.c @@ -438,6 +438,9 @@ static int choke_change(struct Qdisc *sch, struct nlatt= r *opt) =20 ctl =3D nla_data(tb[TCA_CHOKE_PARMS]); =20 + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog)) + return -EINVAL; + if (ctl->limit > CHOKE_MAX_QUEUE) return -EINVAL; =20 diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c index 80105109f756..f9e8deeeac96 100644 --- a/net/sched/sch_gred.c +++ b/net/sched/sch_gred.c @@ -389,6 +389,9 @@ static inline int gred_change_vq(struct Qdisc *sch, int= dp, struct gred_sched *table =3D qdisc_priv(sch); struct gred_sched_data *q =3D table->tab[dp]; =20 + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog)) + return -EINVAL; + if (!q) { table->tab[dp] =3D q =3D *prealloc; *prealloc =3D NULL; diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index 8c0508c0e287..0505b8408c8b 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -199,6 +199,8 @@ static int red_change(struct Qdisc *sch, struct nlattr = *opt) max_P =3D tb[TCA_RED_MAX_P] ? nla_get_u32(tb[TCA_RED_MAX_P]) : 0; =20 ctl =3D nla_data(tb[TCA_RED_PARMS]); + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog)) + return -EINVAL; =20 if (ctl->limit > 0) { child =3D fifo_create_dflt(sch, &bfifo_qdisc_ops, ctl->limit); diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 3f2c3eed04da..8b8c084b32cd 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -633,6 +633,9 @@ static int sfq_change(struct Qdisc *sch, struct nlattr = *opt) if (ctl->divisor && (!is_power_of_2(ctl->divisor) || ctl->divisor > 65536)) return -EINVAL; + if (ctl_v1 && !red_check_params(ctl_v1->qth_min, ctl_v1->qth_max, + ctl_v1->Wlog)) + return -EINVAL; if (ctl_v1 && ctl_v1->qth_min) { p =3D kmalloc(sizeof(*p), GFP_KERNEL); if (!p) --=20 2.11.0