From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751482AbeAZDUr (ORCPT ); Thu, 25 Jan 2018 22:20:47 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48742 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751174AbeAZDUp (ORCPT ); Thu, 25 Jan 2018 22:20:45 -0500 Subject: Re: [PATCH net-next 00/12] ptr_ring fixes To: "Michael S. Tsirkin" , linux-kernel@vger.kernel.org Cc: netdev@vger.kernel.org, John Fastabend , David Miller References: <1516923320-16959-1-git-send-email-mst@redhat.com> From: Jason Wang Message-ID: <7530384d-2bc9-821a-c1f5-8128a6a92d45@redhat.com> Date: Fri, 26 Jan 2018 11:20:38 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <1516923320-16959-1-git-send-email-mst@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018年01月26日 07:36, Michael S. Tsirkin wrote: > This fixes a bunch of issues around ptr_ring use in net core. > One of these: "tap: fix use-after-free" is also needed on net, > but can't be backported cleanly. > > I will post a net patch separately. > > Lightly tested - Jason, could you pls confirm this > addresses the security issue you saw with ptr_ring? > Testing reports would be appreciated too. With the reproducer provided by syzbot, the problem has been fixed. Thanks