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 A4F95C433DF for ; Fri, 14 Aug 2020 07:14:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 878042087D for ; Fri, 14 Aug 2020 07:14:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727095AbgHNHOo (ORCPT ); Fri, 14 Aug 2020 03:14:44 -0400 Received: from szxga08-in.huawei.com ([45.249.212.255]:35438 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726283AbgHNHOn (ORCPT ); Fri, 14 Aug 2020 03:14:43 -0400 Received: from dggeme752-chm.china.huawei.com (unknown [172.30.72.53]) by Forcepoint Email with ESMTP id 0A64FF16F2CD84232FF6; Fri, 14 Aug 2020 15:14:40 +0800 (CST) Received: from dggeme753-chm.china.huawei.com (10.3.19.99) by dggeme752-chm.china.huawei.com (10.3.19.98) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1913.5; Fri, 14 Aug 2020 15:14:39 +0800 Received: from dggeme753-chm.china.huawei.com ([10.7.64.70]) by dggeme753-chm.china.huawei.com ([10.7.64.70]) with mapi id 15.01.1913.007; Fri, 14 Aug 2020 15:14:39 +0800 From: linmiaohe To: Willem de Bruijn CC: David Miller , Paolo Abeni , Florian Westphal , Pablo Neira Ayuso , Eric Dumazet , Steffen Klassert , "Jason A. Donenfeld" , "rdunlap@infradead.org" , "decui@microsoft.com" , Jakub Sitnicki , "jeremy@azazel.net" , "mashirle@us.ibm.com" , linux-kernel Subject: Re: [PATCH 1/5] net: Fix potential deadloop in skb_copy_ubufs() Thread-Topic: [PATCH 1/5] net: Fix potential deadloop in skb_copy_ubufs() Thread-Index: AdZyCng8yL/EIjdPQ3Gs3ioJM4VpUQ== Date: Fri, 14 Aug 2020 07:14:39 +0000 Message-ID: <6e3bace9ebea4f59a567a9ab0ef85d90@huawei.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.174.176.252] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org V2lsbGVtIGRlIEJydWlqbiA8d2lsbGVtZGVicnVpam4ua2VybmVsQGdtYWlsLmNvbT4gd3JvdGU6 DQo+T24gVGh1LCBBdWcgNiwgMjAyMCBhdCAxOjQ4IFBNIGxpbm1pYW9oZSA8bGlubWlhb2hlQGh1 YXdlaS5jb20+IHdyb3RlOg0KPj4NCj4+IEZyb206IE1pYW9oZSBMaW4gPGxpbm1pYW9oZUBodWF3 ZWkuY29tPg0KPj4NCj4+IFdlIGNvdWxkIGJlIHRyYXBwZWQgaW4gZGVhZGxvb3Agd2hlbiB3ZSB0 cnkgdG8gY29weSB1c2Vyc3BhY2Ugc2tiIA0KPj4gZnJhZ3MgYnVmZmVycyB0byBrZXJuZWwgd2l0 aCBhIGNsb25lZCBza2I6DQo+PiBSZXByb2R1Y2UgY29kZSBzbmlwcGV0Og0KPj4gICAgICAgICBz a2IgPSBhbGxvY19za2IoVUJVRl9EQVRBX0xFTiwgR0ZQX0FUT01JQyk7DQo+PiAgICAgICAgIGNs b25lID0gc2tiX2Nsb25lKHNrYiwgR0ZQX0FUT01JQyk7DQo+PiAgICAgICAgIHNrYl96Y29weV9z ZXRfbm91YXJnKGNsb25lLCBOVUxMKTsNCj4+ICAgICAgICAgcHNrYl9leHBhbmRfaGVhZChza2Is IDAsIDAsIEdGUF9BVE9NSUMpOw0KPj4NCj4+IENhdGNoIHRoaXMgdW5leHBlY3RlZCBjYXNlIGFu ZCByZXR1cm4gLUVJTlZBTCBpbiBza2Jfb3JwaGFuX2ZyYWdzKCkgDQo+PiBiZWZvcmUgd2UgY2Fs bCBza2JfY29weV91YnVmcygpIHRvIGZpeCBpdC4NCj4NCj5JcyB0aGlzIGEgaHlwb3RoZXRpY2Fs IGNvZGVwYXRoPw0KPg0KPnNrYiB6ZXJvY29weSBjYXJlZnVsbHkgdHJhY2tzIGNsb25lIGNhbGxz IHdoZXJlIG5lY2Vzc2FyeS4gU2VlIHRoZSBjYWxsIHRvIHNrYl9vcnBoYW5fZnJhZ3MgaW4gc2ti X2Nsb25lLCBhbmQgdGhlIGltcGxlbWVudGF0aW9uIG9mIHRoYXQgY2FsbGVlLg0KPg0KPlRoZSBv bmx5IGNhbGxlciBvZiBza2IgemVyb2NvcHkgd2l0aCBub3VhcmcgaXMgdHBhY2tldF9maWxsX3Nr YiwgYXMgb2YgY29tbWl0IDVjZDhkNDZlYTE1NiAoInBhY2tldDogY29weSB1c2VyIGJ1ZmZlcnMg YmVmb3JlIG9ycGhhbiBvciBjbG9uZSIpLg0KPg0KPkFzIHRoZSBjb21taXQgc3ViamVjdCBpbmRp Y2F0ZXMsIHRoaXMgc2V0cyBza2JfemNvcHlfc2V0X25vdWFyZyBleGFjdGx5IHRvIGJlIHN1cmUg dGhhdCBhbnkgY2xvbmUgd2lsbCB0cmlnZ2VyIGEgY29weSBvZiAiemVyb2NvcHkiDQo+dXNlciBk YXRhIHRvIHByaXZhdGUga2VybmVsIG1lbW9yeS4NCj4NCj5ObyBjbG9uZSBtdXN0IGhhcHBlbiBi ZXR3ZWVuIGFsbG9jX3NrYiBhbmQgc2tiX3pjb3B5X3NldF9ub3VhcmcsIGluZGVlZC4gQnV0IEFG QUlLLCBub25lIGV4aXN0cy4NCg0KU2luY2Ugd2UgYWx3YXlzIGNhbGwgc2tiX29ycGhhbl9mcmFn cyBpbiBza2JfY2xvbmUsIGlzIGl0IHVubmVjZXNzYXJ5IHRvIGNhbGwgc2tiX29ycGhhbl9mcmFn cyBpbiBwc2tiX2V4cGFuZF9oZWFkIHdoZW4gc2tiIGlzIGNsb25lZCA/DQoNClRoYW5rcy4NCg0K