From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1BCC4C433E3 for ; Mon, 20 Jul 2020 15:12:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0014322B4D for ; Mon, 20 Jul 2020 15:12:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728555AbgGTPMf (ORCPT ); Mon, 20 Jul 2020 11:12:35 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:45816 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726046AbgGTPMf (ORCPT ); Mon, 20 Jul 2020 11:12:35 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-273-A-a-tjmpPoK8322kbBd5Ag-1; Mon, 20 Jul 2020 16:12:31 +0100 X-MC-Unique: A-a-tjmpPoK8322kbBd5Ag-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Mon, 20 Jul 2020 16:12:30 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Mon, 20 Jul 2020 16:12:30 +0100 From: David Laight To: 'lebon zhou' , "davem@davemloft.net" , "kuba@kernel.org" CC: "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" Subject: RE: [PATCH] Fix memory overwriting issue when copy an address to user space Thread-Topic: [PATCH] Fix memory overwriting issue when copy an address to user space Thread-Index: AQHWXkczL6vjqjZmFUGQHwGvRX8coqkQkxLw Date: Mon, 20 Jul 2020 15:12:30 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogbGVib24gemhvdQ0KPiBTZW50OiAyMCBKdWx5IDIwMjAgMDU6MzUNCj4gVG86IGRhdmVt QGRhdmVtbG9mdC5uZXQ7IGt1YmFAa2VybmVsLm9yZw0KPiBDYzogbGludXgta2VybmVsQHZnZXIu a2VybmVsLm9yZzsgbmV0ZGV2QHZnZXIua2VybmVsLm9yZw0KPiBTdWJqZWN0OiBbUEFUQ0hdIEZp eCBtZW1vcnkgb3ZlcndyaXRpbmcgaXNzdWUgd2hlbiBjb3B5IGFuIGFkZHJlc3MgdG8gdXNlciBz cGFjZQ0KPiANCj4gV2hlbiBhcHBsaWNhdGlvbiBwcm92aWRlZCBidWZmZXIgc2l6ZSBsZXNzIHRo YW4gc29ja2FkZHJfc3RvcmFnZSwgdGhlbg0KPiBrZXJuZWwgd2lsbCBvdmVyd3JpdGUgc29tZSBt ZW1vcnkgYXJlYSB3aGljaCBtYXkgY2F1c2UgbWVtb3J5IGNvcnJ1cHRpb24sDQo+IGUuZy46IGlu IHJlY3Ztc2cgY2FzZSwgbGV0IG1zZ19uYW1lPW1hbGxvYyg4KSBhbmQgbXNnX25hbWVsZW49OCwg dGhlbg0KPiB1c3VhbGx5IGFwcGxpY2F0aW9uIGNhbiBjYWxsIHJlY3Ztc2cgc3VjY2Vzc2Z1bCBi dXQgYWN0dWFsbHkgYXBwbGljYXRpb24NCj4gbWVtb3J5IGdldCBjb3JydXB0ZWQuDQoNCldoZXJl Pw0KVGhlIGNvcHlfdG9fdXNlcigpIHVzZXMgdGhlIHNob3J0IGxlbmd0aCBwcm92aWRlZCBieSB0 aGUgdXNlci4NClRoZXJlIGlzIGV2ZW4gYSBjb21tZW50IHNheWluZyB0aGF0IGlmIHRoZSBhZGRy ZXNzIGlzIHRydW5jYXRlZA0KdGhlIGxlbmd0aCByZXR1cm5lZCB0byB0aGUgdXNlciBpcyB0aGUg ZnVsbCBsZW5ndGguDQoNCk1heWJlIHRoZSBhcHBsaWNhdGlvbiBpcyByZXVzaW5nIHRoZSBtc2cg d2l0aG91dCByZS1pbml0aWFsaXNpbmcNCml0IHByb3Blcmx5Lg0KDQoJRGF2aWQNCg0KLQ0KUmVn aXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRv biBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K