Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp26930yba; Tue, 23 Apr 2019 18:45:08 -0700 (PDT) X-Google-Smtp-Source: APXvYqzDnFkGRmeBp2EYovOs7kjxYlvj+RG0Z0FHLerr00ayLPK8TK0RTDBCYGmi/XmRWj1OXhwv X-Received: by 2002:a63:155d:: with SMTP id 29mr27720703pgv.389.1556070308373; Tue, 23 Apr 2019 18:45:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1556070308; cv=none; d=google.com; s=arc-20160816; b=G6P4pWWhXJJ0XtdnUUDfQbig5Z4B6E+tjUAir7cEMzP+qV3SaocyIT0PgW55Bb3eGH TX2mq91dWv0Mx/S2Lc7QwHJMs0NeDRMf48/fp4LnsNvZZ4tJxhccIut019p3lrPwlt7/ cngP1VXLydRX7u0P0cU6dvqoJSVZ/jbh3lrvOleeXEID73qHf+7B6D8QY8uyxg5xhT9a UlkqxRus/HDmd/CgN2zhwJnbxTLzJGM/+HXIGP5REryJDaZjWDzN5/iPmSLfhdm2CM6K VoTHQ1nW29ITa+S2dO4hx5dYchuLrfaQIqdzE8uDXUOwPf5y7EZR9NkFFBcncGHu7fQa kwsg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-language:accept-language:message-id:date:thread-index :thread-topic:subject:cc:to:from:dkim-signature:dkim-signature; bh=EoBC2YYQEdiCYLgEjsrY1Ma8fce70PkHJPD3rdyfwPU=; b=AhLzdFknkNr5atTqkesz1zshVUTkV1lK73uqGvjBLC+Htb/f4PQ/oFV7JIwipQFsIB LsSgnU3sWfhHceYmTD1Li8MeiYr2mzAT0XJAGYpuBZ1NS7KiHG8i05fFupNRE4SQuT4N dfwpqy2bFwEbNTvKWuPTj/y0zFwQmDDmuqnWSwQA82URyXByTa3Vd0JU8uo3nz3jtnt2 QJybCzMIx8DxyvvcscPUVO2a+m2bzST6E/9eEc/F52lKaP3Py9d0D3LaUDa+K3ud3UqJ 9SuFigOlyMq8ISn/3MS/ISZXJM6ftB4LepDIZ7MX97poqBkvPGIZjXHiE20UilwmQxbr 86zA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b=bPKt8oBS; dkim=pass header.i=@fb.onmicrosoft.com header.s=selector1-fb-com header.b=bo40wxxL; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=fb.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 41si18039671plb.164.2019.04.23.18.44.52; Tue, 23 Apr 2019 18:45:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@fb.com header.s=facebook header.b=bPKt8oBS; dkim=pass header.i=@fb.onmicrosoft.com header.s=selector1-fb-com header.b=bo40wxxL; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=fb.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729332AbfDXBn5 (ORCPT + 99 others); Tue, 23 Apr 2019 21:43:57 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:43646 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfDXBn4 (ORCPT ); Tue, 23 Apr 2019 21:43:56 -0400 Received: from pps.filterd (m0044008.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3O1hVrY001203; Tue, 23 Apr 2019 18:43:36 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : content-type : content-transfer-encoding : mime-version; s=facebook; bh=EoBC2YYQEdiCYLgEjsrY1Ma8fce70PkHJPD3rdyfwPU=; b=bPKt8oBSyGHjKtzvvlgaKTr9ZhPzMHKXI16tSFqADo5iZa9LlyaT0NZxX4x9jzJdNa4A I/HrK5mw21VpzX9McFXWZBUEtloVfezeK4mDJXXVVTsc8ANvSh2U18DOl7Hpar/A9TiB 7/K1U/ESKGPsDPpxxawjr9i91/zvvLThX/c= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2s2dkxr4hg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 23 Apr 2019 18:43:36 -0700 Received: from prn-mbx04.TheFacebook.com (2620:10d:c081:6::18) by prn-hub04.TheFacebook.com (2620:10d:c081:35::128) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.1.1713.5; Tue, 23 Apr 2019 18:43:36 -0700 Received: from prn-hub03.TheFacebook.com (2620:10d:c081:35::127) by prn-mbx04.TheFacebook.com (2620:10d:c081:6::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.1.1713.5; Tue, 23 Apr 2019 18:43:35 -0700 Received: from NAM02-BL2-obe.outbound.protection.outlook.com (192.168.54.28) by o365-in.thefacebook.com (192.168.16.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.1.1713.5 via Frontend Transport; Tue, 23 Apr 2019 18:43:35 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.onmicrosoft.com; s=selector1-fb-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=EoBC2YYQEdiCYLgEjsrY1Ma8fce70PkHJPD3rdyfwPU=; b=bo40wxxLN/Vw2FrSaybc3CEhLyhRcU7/D8b76aphtAKK2Tre1mYAwtYfH8n2P4JJD5TL+C9UyRLPAQViM10Z7lSQTQPWhoC3yqQv1C3x8h7TWyVpVfbLJCT1SJrDdnZ/oxdm0WcUCiZndfZuS2KJL5TWaG3vAbSMBCWl/sOHYkw= Received: from MWHPR15MB1216.namprd15.prod.outlook.com (10.175.2.146) by MWHPR15MB1583.namprd15.prod.outlook.com (10.173.235.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1835.12; Wed, 24 Apr 2019 01:43:32 +0000 Received: from MWHPR15MB1216.namprd15.prod.outlook.com ([fe80::9ccc:f6fa:40e2:f1cd]) by MWHPR15MB1216.namprd15.prod.outlook.com ([fe80::9ccc:f6fa:40e2:f1cd%10]) with mapi id 15.20.1813.017; Wed, 24 Apr 2019 01:43:32 +0000 From: Tao Ren To: "David S . Miller" , Maxim Mikityanskiy , Bartosz Golaszewski , Samuel Mendoza-Jonas , Jakub Kicinski , Joel Stanley , Andrew Jeffery , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "openbmc@lists.ozlabs.org" CC: Tao Ren Subject: [PATCH net v4] net/ncsi: handle overflow when incrementing mac address Thread-Topic: [PATCH net v4] net/ncsi: handle overflow when incrementing mac address Thread-Index: AQHU+j8fb/NadFiWqkOTQghGXrE+GQ== Date: Wed, 24 Apr 2019 01:43:32 +0000 Message-ID: <20190424014310.24253-1-taoren@fb.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR03CA0029.namprd03.prod.outlook.com (2603:10b6:301:3b::18) To MWHPR15MB1216.namprd15.prod.outlook.com (2603:10b6:320:23::18) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [2620:10d:c090:200::5189] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: d6f28ace-00a5-4db9-1f66-08d6c8564227 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(2017052603328)(7193020);SRVR:MWHPR15MB1583; x-ms-traffictypediagnostic: MWHPR15MB1583: x-microsoft-antispam-prvs: x-forefront-prvs: 00179089FD x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(376002)(136003)(346002)(366004)(396003)(39860400002)(189003)(199004)(64756008)(52116002)(97736004)(316002)(6486002)(14454004)(99286004)(6436002)(110136005)(486006)(8676002)(5660300002)(53936002)(305945005)(7736002)(2616005)(476003)(81166006)(81156014)(6512007)(1076003)(8936002)(46003)(7416002)(36756003)(6506007)(2906002)(386003)(6116002)(25786009)(50226002)(71190400001)(71200400001)(102836004)(4326008)(478600001)(186003)(256004)(14444005)(86362001)(73956011)(66446008)(68736007)(66946007)(2201001)(66476007)(2501003)(66556008)(921003)(1121003);DIR:OUT;SFP:1102;SCL:1;SRVR:MWHPR15MB1583;H:MWHPR15MB1216.namprd15.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: fb.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: pGdFyqX0FszlMoWNwda97bHndhx1ASAlxC0mybhRN2d8qsnCIsNy5TmmyPnjnT6m6cI5LBYIvumdFYAus4CiQ4xYRTHyYwXdcGkDlJ8fiGRAA/0veYac2mAizIeIoDcc0x2oHNGv2rg7Ndz+Y7Vhzjtb80cVuMcWaeI+yqkrchm2wW9/bWvPdXtzwcP9zm22Kgi/q7FRjciIDGL85fD7Le8ZybepDzeqmTgIgDYKveHdweaaX4O6yW0eMDBqzMExCY6FeR/4onwtWqOQ4V4O84LXAE23hHPT8ZXk3FmTpxmhZosUwmLMHGGd+zONTD0jY3HrVh5Nl5MGqh5zfnweGZg1EITXKlbzvW/3nH93m6hctMIJQUX9xYh+AJkNbuL3XvVkW3esv+S88GKsmcFHfPn/3fq3FNHTDlmJi2NwQxI= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: d6f28ace-00a5-4db9-1f66-08d6c8564227 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Apr 2019 01:43:32.6950 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR15MB1583 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-24_01:,, signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org UHJldmlvdXNseSBCTUMncyBNQUMgYWRkcmVzcyBpcyBjYWxjdWxhdGVkIGJ5IHNpbXBseSBhZGRp bmcgMSB0byB0aGUNCmxhc3QgYnl0ZSBvZiBuZXR3b3JrIGNvbnRyb2xsZXIncyBNQUMgYWRkcmVz cywgYW5kIGl0IHByb2R1Y2VzIGluY29ycmVjdA0KcmVzdWx0IHdoZW4gbmV0d29yayBjb250cm9s bGVyJ3MgTUFDIGFkZHJlc3MgZW5kcyB3aXRoIDB4RkYuDQoNClRoZSBwcm9ibGVtIGNhbiBiZSBm aXhlZCBieSBjYWxsaW5nIGV0aF9hZGRyX2luYygpIGZ1bmN0aW9uIHRvIGluY3JlbWVudA0KTUFD IGFkZHJlc3M7IGJlc2lkZXMsIHRoZSBNQUMgYWRkcmVzcyBpcyBhbHNvIHZhbGlkYXRlZCBiZWZv cmUgYXNzaWduaW5nDQp0byBCTUMuDQoNCkZpeGVzOiBjYjEwYzdjMGRmZDkgKCJuZXQvbmNzaTog QWRkIE5DU0kgQnJvYWRjb20gT0VNIGNvbW1hbmQiKQ0KU2lnbmVkLW9mZi1ieTogVGFvIFJlbiA8 dGFvcmVuQGZiLmNvbT4NCi0tLQ0KIGluY2x1ZGUvbGludXgvZXRoZXJkZXZpY2UuaCB8IDEyICsr KysrKysrKysrKw0KIG5ldC9uY3NpL25jc2ktcnNwLmMgICAgICAgICB8ICA2ICsrKysrLQ0KIDIg ZmlsZXMgY2hhbmdlZCwgMTcgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQ0KDQpDaGFuZ2Vz IGluIHY0Og0KIC0gcmV2ZXJ0IHRoZSBjaGFuZ2VzIGluIGV0aF9hZGRyX2RlYygpIGZ1bmN0aW9u IGNvbW1lbnQuDQpDaGFuZ2VzIGluIHYzOg0KIC0gc3F1YXNoIGNoYW5nZXMgaW4gImV0aGVyZGV2 aWNlLmgiIGludG8gdGhpcyBwYXRjaC4NCiAtIGZpeCBmb3JtYXQgaXNzdWUgaW4gZnVuY3Rpb24g Y29tbWVudC4NCkNoYW5nZXMgaW4gdjI6DQogLSBpbmNyZW1lbnQgTUFDIGFkZHJlc3MgYnkgY2Fs bGluZyBldGhfYWRkcl9pbmMoKSBmdW5jdGlvbi4NCiAtIHZhbGlkYXRlIE1BQyBhZGRyZXNzIGJl Zm9yZSBhc3NpZ25pbmcgdG8gQk1DLg0KDQpkaWZmIC0tZ2l0IGEvaW5jbHVkZS9saW51eC9ldGhl cmRldmljZS5oIGIvaW5jbHVkZS9saW51eC9ldGhlcmRldmljZS5oDQppbmRleCBlMmYzYjIxY2Q3 MmEuLmFhOGJmZDZmNzM4YyAxMDA2NDQNCi0tLSBhL2luY2x1ZGUvbGludXgvZXRoZXJkZXZpY2Uu aA0KKysrIGIvaW5jbHVkZS9saW51eC9ldGhlcmRldmljZS5oDQpAQCAtNDQ4LDYgKzQ0OCwxOCBA QCBzdGF0aWMgaW5saW5lIHZvaWQgZXRoX2FkZHJfZGVjKHU4ICphZGRyKQ0KIAl1NjRfdG9fZXRo ZXJfYWRkcih1LCBhZGRyKTsNCiB9DQogDQorLyoqDQorICogZXRoX2FkZHJfaW5jKCkgLSBJbmNy ZW1lbnQgdGhlIGdpdmVuIE1BQyBhZGRyZXNzLg0KKyAqIEBhZGRyOiBQb2ludGVyIHRvIGEgc2l4 LWJ5dGUgYXJyYXkgY29udGFpbmluZyBFdGhlcm5ldCBhZGRyZXNzIHRvIGluY3JlbWVudC4NCisg Ki8NCitzdGF0aWMgaW5saW5lIHZvaWQgZXRoX2FkZHJfaW5jKHU4ICphZGRyKQ0KK3sNCisJdTY0 IHUgPSBldGhlcl9hZGRyX3RvX3U2NChhZGRyKTsNCisNCisJdSsrOw0KKwl1NjRfdG9fZXRoZXJf YWRkcih1LCBhZGRyKTsNCit9DQorDQogLyoqDQogICogaXNfZXRoZXJkZXZfYWRkciAtIFRlbGwg aWYgZ2l2ZW4gRXRoZXJuZXQgYWRkcmVzcyBiZWxvbmdzIHRvIHRoZSBkZXZpY2UuDQogICogQGRl djogUG9pbnRlciB0byBhIGRldmljZSBzdHJ1Y3R1cmUNCmRpZmYgLS1naXQgYS9uZXQvbmNzaS9u Y3NpLXJzcC5jIGIvbmV0L25jc2kvbmNzaS1yc3AuYw0KaW5kZXggZGMwN2ZjYzc5MzhlLi44MDJk YjAxZTMwNzUgMTAwNjQ0DQotLS0gYS9uZXQvbmNzaS9uY3NpLXJzcC5jDQorKysgYi9uZXQvbmNz aS9uY3NpLXJzcC5jDQpAQCAtMTEsNiArMTEsNyBAQA0KICNpbmNsdWRlIDxsaW51eC9rZXJuZWwu aD4NCiAjaW5jbHVkZSA8bGludXgvaW5pdC5oPg0KICNpbmNsdWRlIDxsaW51eC9uZXRkZXZpY2Uu aD4NCisjaW5jbHVkZSA8bGludXgvZXRoZXJkZXZpY2UuaD4NCiAjaW5jbHVkZSA8bGludXgvc2ti dWZmLmg+DQogDQogI2luY2x1ZGUgPG5ldC9uY3NpLmg+DQpAQCAtNjY3LDcgKzY2OCwxMCBAQCBz dGF0aWMgaW50IG5jc2lfcnNwX2hhbmRsZXJfb2VtX2JjbV9nbWEoc3RydWN0IG5jc2lfcmVxdWVz dCAqbnIpDQogCW5kZXYtPnByaXZfZmxhZ3MgfD0gSUZGX0xJVkVfQUREUl9DSEFOR0U7DQogCW1l bWNweShzYWRkci5zYV9kYXRhLCAmcnNwLT5kYXRhW0JDTV9NQUNfQUREUl9PRkZTRVRdLCBFVEhf QUxFTik7DQogCS8qIEluY3JlYXNlIG1hYyBhZGRyZXNzIGJ5IDEgZm9yIEJNQydzIGFkZHJlc3Mg Ki8NCi0Jc2FkZHIuc2FfZGF0YVtFVEhfQUxFTiAtIDFdKys7DQorCWV0aF9hZGRyX2luYygodTgg KilzYWRkci5zYV9kYXRhKTsNCisJaWYgKCFpc192YWxpZF9ldGhlcl9hZGRyKChjb25zdCB1OCAq KXNhZGRyLnNhX2RhdGEpKQ0KKwkJcmV0dXJuIC1FTlhJTzsNCisNCiAJcmV0ID0gb3BzLT5uZG9f c2V0X21hY19hZGRyZXNzKG5kZXYsICZzYWRkcik7DQogCWlmIChyZXQgPCAwKQ0KIAkJbmV0ZGV2 X3dhcm4obmRldiwgIk5DU0k6ICdXcml0aW5nIG1hYyBhZGRyZXNzIHRvIGRldmljZSBmYWlsZWRc biIpOw0KLS0gDQoyLjE3LjENCg0K