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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DE49C6379F for ; Fri, 24 Feb 2023 01:15:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229535AbjBXBPx (ORCPT ); Thu, 23 Feb 2023 20:15:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55986 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229536AbjBXBPv (ORCPT ); Thu, 23 Feb 2023 20:15:51 -0500 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12BBBB77B for ; Thu, 23 Feb 2023 17:15:48 -0800 (PST) Received: from dggpemm500014.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4PNBhq4YzGzRsCc; Fri, 24 Feb 2023 09:12:59 +0800 (CST) Received: from [10.174.178.120] (10.174.178.120) by dggpemm500014.china.huawei.com (7.185.36.153) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.17; Fri, 24 Feb 2023 09:15:45 +0800 Message-ID: <248aff47-f049-4f4f-a6ac-cf01c5d2ac61@huawei.com> Date: Fri, 24 Feb 2023 09:15:45 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.7.0 CC: , , , , , , , , , Subject: Re: [RFC PATCH 1/1] x86/mm/pat: Clear VM_PAT if copy_p4d_range failed Content-Language: en-US To: References: <20230217025615.1595558-1-mawupeng1@huawei.com> <20230223141412.cdf900eef1cd191895a650ed@linux-foundation.org> From: mawupeng In-Reply-To: <20230223141412.cdf900eef1cd191895a650ed@linux-foundation.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.178.120] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500014.china.huawei.com (7.185.36.153) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2023/2/24 6:14, Andrew Morton wrote: > On Fri, 17 Feb 2023 10:56:15 +0800 Wupeng Ma wrote: > >> From: Ma Wupeng >> >> x86/mm/pat: Clear VM_PAT if copy_p4d_range failed. >> >> Syzbot reports > > Thanks. It would be nice to have a Link: to this report - I cannot > find that email anywhere :( This WARN_ON_ONCE was originally reported by syz since v4.19[1] and we found that this problem can be reproduced in v5.10 and the latest master. [1]: https://syzkaller.appspot.com/bug?id=2ab293a84ed98e600f31dede8e082dc81be8a4fe > >