From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 39B3AC8F6 for ; Sat, 10 Jun 2023 19:31:52 +0000 (UTC) Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9257F1AB for ; Sat, 10 Jun 2023 12:31:50 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-133-ozbbM19YMVelK_WrTOSHKw-1; Sat, 10 Jun 2023 20:31:48 +0100 X-MC-Unique: ozbbM19YMVelK_WrTOSHKw-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Sat, 10 Jun 2023 20:31:42 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Sat, 10 Jun 2023 20:31:42 +0100 From: David Laight To: 'Rasmus Villemoes' , Petr Mladek , Kees Cook CC: Richard Weinberger , "linux-hardening@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Steven Rostedt , "Sergey Senozhatsky" , Andy Shevchenko , "David S. Miller" , Eric Dumazet , Jakub Kicinski , "Paolo Abeni" , Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho , "Boqun Feng" , Gary Guo , =?utf-8?B?QmrDtnJuIFJveSBCYXJvbg==?= , Benno Lossin , Alexei Starovoitov , "Daniel Borkmann" , Jesper Dangaard Brouer , John Fastabend Subject: RE: [RFC PATCH 0/1] Integer overflows while scanning for integers Thread-Topic: [RFC PATCH 0/1] Integer overflows while scanning for integers Thread-Index: AQHZmrqmhOoyRHuWh0WX/GnnSQjPva+ET1HA Date: Sat, 10 Jun 2023 19:31:42 +0000 Message-ID: <17e5e7c31b2347a6b87c6533c59899d0@AcuMS.aculab.com> References: <20230607223755.1610-1-richard@nod.at> <202306071634.51BBAFD14@keescook> <9cd596d9-0ecb-29fc-fe18-f19b86a5ba44@rasmusvillemoes.dk> In-Reply-To: <9cd596d9-0ecb-29fc-fe18-f19b86a5ba44@rasmusvillemoes.dk> 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] Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net RnJvbTogUmFzbXVzIFZpbGxlbW9lcw0KPiBTZW50OiAwOSBKdW5lIDIwMjMgMTE6MTANCj4gDQo+ IE9uIDA4LzA2LzIwMjMgMTcuMjcsIFBldHIgTWxhZGVrIHdyb3RlOg0KPiA+IE9uIFdlZCAyMDIz LTA2LTA3IDE2OjM2OjEyLCBLZWVzIENvb2sgd3JvdGU6DQo+IA0KPiA+IEl0IHNlZW1zIHRoYXQg dXNlcnNwYWNlIGltcGxlbWVudGF0aW9uIG9mIHNzY2FuZigpIGFuZCB2c3NjYW5mKCkNCj4gPiBy ZXR1cm5zIC1FUkFOR0UgaW4gdGhpcyBjYXNlLiBJdCBtaWdodCBiZSBhIHJlYXNvbmFibGUgc29s dXRpb24uDQo+IA0KPiBXZWxsLiBfU29tZV8gdXNlcnNwYWNlIGltcGxlbWVudGF0aW9uIGRvZXMg dGhhdC4gSXQncyBub3QgaW4gUE9TSVguDQo+IFdoaWxlICJtYW4gc2NhbmYiIGxpc3RzIHRoYXQg RVJBTkdFIGVycm9yLCBpdCBhbHNvIGV4cGxpY2l0bHkgc2F5cyB0aGF0Og0KPiANCj4gQ09ORk9S TUlORyBUTw0KPiAgICAgICAgVGhlIGZ1bmN0aW9ucyBmc2NhbmYoKSwgc2NhbmYoKSwgYW5kIHNz Y2FuZigpIGNvbmZvcm0gdG8gQzg5IGFuZA0KPiBDOTkgYW5kIFBPU0lYLjEtMjAwMS4gIFRoZXNl IHN0YW5kYXJkcyBkbyAgbm90ICBzcGVjaWZ5ICB0aGUNCj4gICAgICAgIEVSQU5HRSBlcnJvci4N Cj4gDQo+IEkgY2FuJ3QgZmlndXJlIG91dCB3aGF0IFBPU0lYIGFjdHVhbGx5IHNheXMgc2hvdWxk IG9yIGNvdWxkIGhhcHBlbiB3aXRoDQo+IHNzY2FuZigiOTk5OTk5OTk5OTk5OTkiLCAiJWkiLCAm eCk7DQoNClBvc3NpYmx5ICd1bmRlZmluZWQgYmVoYXZpb3VyJyAtIHRoZXkgbGlrZSB0aGF0IG9u ZS4NCg0KQnV0IEknbSBzdXJlIEkgcmVtZW1iZXIgdGhlIFRvRyAnVW5peCcgZGVmaW5pdGlvbiBu b3QgcmVxdWlyaW5nIHRoYXQNCid1dGlsaXRpZXMnIGNoZWNrIGZvciBvdmVyZmxvdyBvbiBudW1l cmljIGNvbW1hbmQgbGluZSBwYXJhbWV0ZXJzLg0KKEl0IG1pZ2h0IGV2ZW4gaGF2ZSBzYWlkIHRo ZXkgd291bGRuJ3QgY2hlY2suKQ0KU28gaXQgd2FzIHBlcmZlY3RseSB2YWxpZCBmb3IgYSBzdHVw aWRseSBvdXQgb2YgcmFuZ2UgdmFsdWUNCnRvIGJlIHRyZWF0ZWQgYXMgYSBkaWZmZXJlbnQgKHBv c3NpYmx5IHZhbGlkKSB2YWx1ZS4NCg0KV2hhdCBpcyBjbGVhcmx5IHdyb25nIGlzIHRvIGp1c3Qg c3RvcCBwcm9jZXNzaW5nIHRoZQ0KaW5wdXQgc3RyaW5nLg0Kc3NjYW5mKCI5OTk5OTk5OTk5OTk5 OTk5OTk5c2NhbGUiLCAiJWklcyIsICZ4LCAmc2NhbGUpDQp3cml0aW5nIGFueSAnOScgdG8gc2Nh bGUgaXMgY2xlYXJseSBicm9rZW4uDQoNClBlcnNvbmFsbHkgSSBhdm9pZCBzY2FuZigpIC0gaXQg aXMgZmFyIHRvbyBlYXN5IGZvciBpdCB0byBkbw0Kc29tZXRoaW5nIHlvdSBkaWRuJ3QgcmVhbGx5 IGludGVuZC4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJh bWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0 cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==