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=-4.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 B4D6CC433E0 for ; Mon, 22 Feb 2021 09:33:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75C9864E2F for ; Mon, 22 Feb 2021 09:33:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229989AbhBVJdA (ORCPT ); Mon, 22 Feb 2021 04:33:00 -0500 Received: from mail.kingsoft.com ([114.255.44.146]:44947 "EHLO mail.kingsoft.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S230179AbhBVJcJ (ORCPT ); Mon, 22 Feb 2021 04:32:09 -0500 X-AuditID: 0a580157-f39ff7000005df43-c6-603373aaf480 Received: from mail.kingsoft.com (localhost [10.88.1.32]) (using TLS with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mail.kingsoft.com (SMG-1-NODE-87) with SMTP id E4.A7.57155.AA373306; Mon, 22 Feb 2021 17:04:42 +0800 (HKT) Received: from alex-virtual-machine (172.16.253.254) by KSBJMAIL2.kingsoft.cn (10.88.1.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Mon, 22 Feb 2021 17:31:09 +0800 Date: Mon, 22 Feb 2021 17:31:09 +0800 From: Aili Yao To: Borislav Petkov CC: , , , , , , , Subject: Re: [PATCH v2] x86/mce: fix wrong no-return-ip logic in do_machine_check() Message-ID: <20210222173109.7b7ac42a@alex-virtual-machine> In-Reply-To: <20210222092403.GA29063@zn.tnic> References: <20210222113124.35f2d552@alex-virtual-machine> <20210222115007.75b7de9b@alex-virtual-machine> <20210222092403.GA29063@zn.tnic> Organization: kingsoft X-Mailer: Claws Mail 3.17.5 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [172.16.253.254] X-ClientProxiedBy: KSBJMAIL1.kingsoft.cn (10.88.1.31) To KSBJMAIL2.kingsoft.cn (10.88.1.32) X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrALMWRmVeSWpSXmKPExsXCFcGooLuq2DjBYPFvaYvPG/6xWUzbKG5x 4VQDk8XlXXPYLC4dWMBksXnTVGaLNxfusVj82PCY1YHD43trH4vH4j0vmTw2repk83h37hy7 x/t9V9k8Pm+S8zjR8oU1gD2KyyYlNSezLLVI3y6BK2PCnISCCSwVC65PYWpgnM3cxcjJISFg InFwTjdrFyMXh5DAdCaJjUfnsEE4rxgl1s+bxgJSxSKgKtH9/DIriM0GZO+6NwvMFhFQkvi6 aC4TSAOzwCFGicPnXgCN5eAQFgiVWDKtEKSGV8BKYvW6H2BzOAV0JW4v+c4IsaCPUeLxrR9g g/gFxCR6r/xngjjJXqJtyyJGiGZBiZMzn4A1MwvoSJxYdYwZwpaX2P52DpgtJKAocXjJL3aI XiWJI90z2CDsWIll816xTmAUnoVk1Cwko2YhGbWAkXkVI0txbrrhJkZIpITvYJzX9FHvECMT ByPQbxzMSiK8bHeNEoR4UxIrq1KL8uOLSnNSiw8xSnOwKInzijnyJQgJpCeWpGanphakFsFk mTg4pRqYNjgJLT6cMrnqyMVLJo+nWDDd/GDasMDImXffJetzPBNutlXFbpfu3L9jzsOqjTl2 ZYpG2YVK8gL/HmbfndAZWPOQ1X2Gy/V3098Y3i3y85h2xkLEwSfB5dDtKVaS4W879zf+FlvX qiqznW87737jiSU7EtOPTd50RJ1TJd5O2Xbe823vW6d7627n+ahpz/pH2Sjl222N9IbfSnfL 53p9cc6YWuARc1fp2ym17XMXWng7e2dPyflb6G0S1nNq3e7CmT+bbfeFbovwrFe4em3HhDsn j/Y/ufa/RbEi9uGLc30Cm9ky7rKb+6lZrVJPMddZ9obp4YWPZtHffE/xJn6Z2a9zd9kGn78a FuoM1ku4lViKMxINtZiLihMB2B5wfgMDAAA= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 22 Feb 2021 10:24:03 +0100 Borislav Petkov wrote: > On Mon, Feb 22, 2021 at 11:50:07AM +0800, Aili Yao wrote: > > From commit b2f9d678e28c ("x86/mce: Check for faults tagged in > > EXTABLE_CLASS_FAULT exception table entries"), When there is a > > memory MCE_AR_SEVERITY error with no return ip, > > What is a "no return ip" - MCG_STATUS_RIPV? yes > How do you trigger this error? you can inject a memory UE to a VM, it should always be MCG_STATUS_RIPV 0. Best Regard! Aili Yao