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=-10.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 AB5CFC433DF for ; Tue, 4 Aug 2020 06:11:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B621E2076E for ; Tue, 4 Aug 2020 06:11:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729146AbgHDGLt (ORCPT ); Tue, 4 Aug 2020 02:11:49 -0400 Received: from mx2.suse.de ([195.135.220.15]:33104 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728602AbgHDGLt (ORCPT ); Tue, 4 Aug 2020 02:11:49 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id AD44FAC7D; Tue, 4 Aug 2020 06:12:03 +0000 (UTC) Subject: Re: [PATCH 1/6] xen/gntdev: Fix dmabuf import with non-zero sgt offset To: Oleksandr Andrushchenko , xen-devel@lists.xenproject.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, boris.ostrovsky@oracle.com, airlied@linux.ie, daniel@ffwll.ch Cc: sstabellini@kernel.org, dan.carpenter@oracle.com, intel-gfx@lists.freedesktop.org, Oleksandr Andrushchenko References: <20200731125109.18666-1-andr2000@gmail.com> <20200731125109.18666-2-andr2000@gmail.com> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: Date: Tue, 4 Aug 2020 08:11:47 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200731125109.18666-2-andr2000@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 31.07.20 14:51, Oleksandr Andrushchenko wrote: > From: Oleksandr Andrushchenko > > It is possible that the scatter-gather table during dmabuf import has > non-zero offset of the data, but user-space doesn't expect that. > Fix this by failing the import, so user-space doesn't access wrong data. > > Fixes: 37ccb44d0b00 ("xen/gntdev: Implement dma-buf import functionality") I can't find this commit in the tree. Did you mean bf8dc55b1358? And don't you want to Cc stable for this patch, too? > > Signed-off-by: Oleksandr Andrushchenko Acked-by: Juergen Gross Juergen