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[23.128.96.18]) by mx.google.com with ESMTP id q24si1096944edg.244.2021.01.20.09.20.58; Wed, 20 Jan 2021 09:21:22 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404194AbhATRTB (ORCPT + 99 others); Wed, 20 Jan 2021 12:19:01 -0500 Received: from mga06.intel.com ([134.134.136.31]:12378 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390735AbhATRSj (ORCPT ); Wed, 20 Jan 2021 12:18:39 -0500 IronPort-SDR: tC31yFzbu3rTs2UfCIIhxHqghO71WAusQM2pUwEEg9WbQqRX+SVYDXafACGnT6pMgbCv3pjr5J 9265Y1iHBKLg== X-IronPort-AV: E=McAfee;i="6000,8403,9870"; a="240681976" X-IronPort-AV: E=Sophos;i="5.79,361,1602572400"; d="scan'208";a="240681976" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jan 2021 09:17:49 -0800 IronPort-SDR: IDUk1aqPy7VgkqcXJff/ivsMPleJk4CRYmJ1s9Uu0o9W0tyPECwd9AAGqBybD29jbh25iPM08e z5Oh0HDdvorA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,361,1602572400"; d="scan'208";a="391615567" Received: from fmsmsx601.amr.corp.intel.com ([10.18.126.81]) by orsmga007.jf.intel.com with ESMTP; 20 Jan 2021 09:17:49 -0800 Received: from fmsmsx612.amr.corp.intel.com (10.18.126.92) by fmsmsx601.amr.corp.intel.com (10.18.126.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Wed, 20 Jan 2021 09:17:49 -0800 Received: from fmsmsx610.amr.corp.intel.com (10.18.126.90) by fmsmsx612.amr.corp.intel.com (10.18.126.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 20 Jan 2021 09:17:25 -0800 Received: from fmsmsx610.amr.corp.intel.com ([10.18.126.90]) by fmsmsx610.amr.corp.intel.com ([10.18.126.90]) with mapi id 15.01.1713.004; Wed, 20 Jan 2021 09:17:25 -0800 From: "Luck, Tony" To: Borislav Petkov CC: "x86@kernel.org" , Andrew Morton , Peter Zijlstra , "Darren Hart" , Andy Lutomirski , "linux-kernel@vger.kernel.org" , "linux-edac@vger.kernel.org" , "linux-mm@kvack.org" Subject: RE: [PATCH v4] x86/mce: Avoid infinite loop for copy from user recovery Thread-Topic: [PATCH v4] x86/mce: Avoid infinite loop for copy from user recovery Thread-Index: AQHW64AlZtFSH7GIt0KNvnBLdhzieKopU/SAgAX+pgCAAFQ9AIABVOkA///MFvA= Date: Wed, 20 Jan 2021 17:17:25 +0000 Message-ID: References: <20210111214452.1826-1-tony.luck@intel.com> <20210115003817.23657-1-tony.luck@intel.com> <20210115152754.GC9138@zn.tnic> <20210115193435.GA4663@agluck-desk2.amr.corp.intel.com> <20210115205103.GA5920@agluck-desk2.amr.corp.intel.com> <20210115232346.GA7967@agluck-desk2.amr.corp.intel.com> <20210119105632.GF27433@zn.tnic> <20210119235759.GA9970@agluck-desk2.amr.corp.intel.com> <20210120121812.GF825@zn.tnic> In-Reply-To: <20210120121812.GF825@zn.tnic> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 x-originating-ip: [10.1.200.100] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiBZYWgsIHNvbWUgcHJpbnRrIHNwcmlua2xpbmcgbWlnaHQgYmUgYSBnb29kIHN0YXJ0LiBCdXQg ZGVidWdnaW5nIGluIHRoYXQNCj4gYXRvbWljIGNvbnRleHQgaXMgYWx3YXlzIG5hc3R5LiA7LVwN Cg0KU29tZSB2ZXJ5IGxpZ2h0IHByaW50ayBzcHJpbmtsaW5nIChvbmUgbWVzc2FnZSBpbiBxdWV1 ZV90YXNrX3dvcmsoKSBpbiBhdG9taWMNCmNvbnRleHQsIG9uZSBlYWNoIGluIGtpbGxfbWVfbm93 KCkgYW5kIGtpbGxfbWVfbWF5YmUoKSB0byBjaGVjayB3aGVuIHRhc2tfd29yaw0KYWN0dWFsbHkg Y2FsbGVkIHRoZW0uDQoNCkNhc2VzIDEgJiAyICh1c2VyICYgbm9ybWFsIGNvcHlpbikgbm93IHdv cmsganVzdCBmaW5lIChodW5kcmVkcyBvZiBpdGVyYXRpb25zKS4NCg0KQ2FzZSAzIChteSBmdXRl eCB0ZXN0KSBqdXN0IGhhbmdzIHdpdGggb25seSB0d28gY2hhcmFjdGVycyBtYWtpbmcgaXQgdG8g dGhlIHNlcmlhbCBwb3J0ICJbICINCg0KRGVlcGx5IHN0cmFuZ2UuDQoNCi1Ub255DQo=