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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 54B4CC47082 for ; Mon, 31 May 2021 10:13:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 22F8A611CB for ; Mon, 31 May 2021 10:13:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231182AbhEaKOy (ORCPT ); Mon, 31 May 2021 06:14:54 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:30046 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230521AbhEaKOx (ORCPT ); Mon, 31 May 2021 06:14:53 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-146-fliy-LFpOQ6W43NwjWtg3w-1; Mon, 31 May 2021 11:13:09 +0100 X-MC-Unique: fliy-LFpOQ6W43NwjWtg3w-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 31 May 2021 11:13:07 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.015; Mon, 31 May 2021 11:13:07 +0100 From: David Laight To: 'David Ahern' , Xin Long , "Jakub Kicinski" CC: network dev , davem , "Eric Dumazet" , Paolo Abeni Subject: RE: [PATCH net] udp: fix the len check in udp_lib_getsockopt Thread-Topic: [PATCH net] udp: fix the len check in udp_lib_getsockopt Thread-Index: AQHXVC4NfGcrFbjRIUWrfZBtSgA3Rar9YS+Q Date: Mon, 31 May 2021 10:13:07 +0000 Message-ID: References: <04cb0c7f6884224c99fbf656579250896af82d5b.1622142759.git.lucien.xin@gmail.com> <20210528153911.4f67a691@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> <54cb4e46-28f9-b6db-85ec-f67df1e6bacf@gmail.com> In-Reply-To: <54cb4e46-28f9-b6db-85ec-f67df1e6bacf@gmail.com> Accept-Language: en-GB, 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org RnJvbTogRGF2aWQgQWhlcm4NCj4gU2VudDogMjkgTWF5IDIwMjEgMDI6NTgNCj4gDQo+IE9uIDUv MjgvMjEgNzo0NyBQTSwgWGluIExvbmcgd3JvdGU6DQo+ID4gVGhlIHBhcnRpYWwgYnl0ZShvciBl dmVuIDApIG9mIHRoZSB2YWx1ZSByZXR1cm5lZCBkdWUgdG8gcGFzc2luZyBhIHdyb25nDQo+ID4g b3B0bGVuIHNob3VsZCBiZSBjb25zaWRlcmVkIGFzIGFuIGVycm9yLiAiT24gZXJyb3IsIC0xIGlz IHJldHVybmVkLCBhbmQNCj4gPiBlcnJubyBpcyBzZXQgYXBwcm9wcmlhdGVseS4iLiBTdWNjZXNz IHJldHVybmVkIGluIHRoYXQgY2FzZSBvbmx5IGNvbmZ1c2VzDQo+ID4gdGhlIHVzZXIuDQo+IA0K PiBJdCBpcyBmZWFzaWJsZSB0aGF0IHNvbWUgYXBwIGNvdWxkIHVzZSBib29sIG9yIHU4IGZvciBv cHRpb25zIHRoYXQgaGF2ZQ0KPiAwIG9yIDEgdmFsdWVzIGFuZCB0aGF0IGNvZGUgaGFzIHNvIGZh ciB3b3JrZWQuIFRoaXMgY2hhbmdlIHdvdWxkIGJyZWFrIHRoYXQuDQoNCkVzcGVjaWFsbHkgc2lu Y2UgdGhlIGNvZGUgaXMgYWxzbyBsaWtlbHkgdG8gaWdub3JlIHRoZSByZXR1cm4NCnZhbHVlIHNp bmNlIHRoZSBjYWxsIGlzbid0IGV4Y2VwdGVkIHRvIGFjdHVhbGx5IGZhaWwhDQoNCk1vc3QgKGJ1 dCBub3QgYWxsKSBBQkkgaGF2ZSAnYm9vbCcgZGVmaW5lZCB0aGUgc2FtZSBhcyAndTMyJy4NCkhv d2V2ZXIgdGhlcmUgd2lsbCBiZSBjb2RlIHRoYXQgdXNlcyAnY2hhcicgKGVzcGVjaWFsbHkgZm9y DQpzZXRzb2Nrb3B0KSBhbmQgZXhwZWN0cyBpdCB0byB3b3JrLg0KKEFuZCBpdCBwcm9iYWJseSBh bHdheXMgaGFzIGRvbmUgb24gTEUgc3lzdGVtcy4pDQoNCkEgY2VydGFpbiBvdGhlciBjb21tb24g T1MgZGVmaW5lcyB0aGUgYXJndW1lbnQgYXMgZWl0aGVyIEJPT0wNCm9yIERXT1JEIC0gYm90aCBv ZiB3aGljaCBhcmUgMzJiaXQuDQpCdXQgSSBiZWxpZXZlIGl0IHdvcmtzIGZpbmUgaWYgJ2NoYXIn IGlzIHVzZWQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJy YW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lz dHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=