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[23.128.96.18]) by mx.google.com with ESMTP id i24si150871ejy.153.2021.02.02.14.52.15; Tue, 02 Feb 2021 14:52:39 -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 S236058AbhBBQLB (ORCPT + 99 others); Tue, 2 Feb 2021 11:11:01 -0500 Received: from mga17.intel.com ([192.55.52.151]:11622 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236097AbhBBQIw (ORCPT ); Tue, 2 Feb 2021 11:08:52 -0500 IronPort-SDR: DBYL1IgfkCYR1QKpGe0qVQV9QuHZz/lynG89OTa+2rz052fRoNa8PBPI2sFlfS0KJp96uOVOCI ANushj3+7mmA== X-IronPort-AV: E=McAfee;i="6000,8403,9882"; a="160642750" X-IronPort-AV: E=Sophos;i="5.79,395,1602572400"; d="scan'208";a="160642750" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Feb 2021 08:04:20 -0800 IronPort-SDR: l5mKSzRJkP7qVH9nCbGn+kbS5yQY3daL/Y2i01rj7wx1JGQX/CBt9B7GgHg5YKCVRoQTyM8sU5 gQuViiLS7N9g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,395,1602572400"; d="scan'208";a="413312380" Received: from fmsmsx603.amr.corp.intel.com ([10.18.126.83]) by FMSMGA003.fm.intel.com with ESMTP; 02 Feb 2021 08:04:18 -0800 Received: from fmsmsx612.amr.corp.intel.com (10.18.126.92) by fmsmsx603.amr.corp.intel.com (10.18.126.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Tue, 2 Feb 2021 08:04:18 -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 15.1.2106.2; Tue, 2 Feb 2021 08:04:18 -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 15.01.2106.002; Tue, 2 Feb 2021 08:04:18 -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 v5] x86/mce: Avoid infinite loop for copy from user recovery Thread-Topic: [PATCH v5] x86/mce: Avoid infinite loop for copy from user recovery Thread-Index: AQHW820jWhd/BlkCukOtPpk65S5gH6o6RPEAgAA7fACAA1zygIAF1CqAgAGTOQD//8zdUA== Date: Tue, 2 Feb 2021 16:04:17 +0000 Message-ID: References: <20210115232346.GA7967@agluck-desk2.amr.corp.intel.com> <20210119105632.GF27433@zn.tnic> <20210119235759.GA9970@agluck-desk2.amr.corp.intel.com> <20210120121812.GF825@zn.tnic> <20210121210959.GA10304@agluck-desk2.amr.corp.intel.com> <20210125225509.GA7149@agluck-desk2.amr.corp.intel.com> <20210126110314.GC6514@zn.tnic> <20210126223605.GA14355@agluck-desk2.amr.corp.intel.com> <20210128175735.GB2120@zn.tnic> <20210201185812.GA54867@agluck-desk2.amr.corp.intel.com> <20210202110126.GB18075@zn.tnic> In-Reply-To: <20210202110126.GB18075@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 PiBBbmQgdGhlIG11Y2ggbW9yZSBpbXBvcnRhbnQgcXVlc3Rpb24gaXMsIHdoYXQgaXMgdGhlIGNv ZGUgc3VwcG9zZWQgdG8NCj4gZG8gd2hlbiB0aGF0IG92ZXJmbG93ICphY3R1YWxseSogaGFwcGVu cyBpbiByZWFsIGxpZmU/IEJlY2F1c2UgSUlOTSwNCj4gYW4gb3ZlcmZsb3cgY29uZGl0aW9uIG9u IHRoZSBzYW1lIHBhZ2Ugd291bGQgbWVhbiBraWxsaW5nIHRoZSB0YXNrIHRvDQo+IGNvbnRhaW4g dGhlIGVycm9yIGFuZCBub3Qga2lsbGluZyB0aGUgbWFjaGluZS4uLg0KDQpDb3JyZWN0LiBUaGUg Y2FzZXMgSSd2ZSBhY3R1YWxseSBoaXQsIHRoZSBzZWNvbmQgbWFjaGluZSBjaGVjayBpcyBvbiB0 aGUNCnNhbWUgYWRkcmVzcyBhcyB0aGUgZmlyc3QuIEJ1dCBmcm9tIGEgcmVjb3ZlcnkgcGVyc3Bl Y3RpdmUgTGludXggaXMgZ29pbmcNCnRvIHRha2UgYXdheSB0aGUgd2hvbGUgcGFnZSBhbnl3YXkg Li4uIHNvIG5vdCBjb21wbGFpbmluZyBpZiB0aGUgc2Vjb25kDQoob3Igc3Vic2VxdWVudCkgYWNj ZXNzIGlzIHdpdGhpbiB0aGUgc2FtZSBwYWdlIG1ha2VzIHNlbnNlIChhbmQgdGhhdCdzDQp3aGF0 IHRoZSBwYXRjaCBkb2VzKS4NCg0KVGhlIGNvZGUgY2FuJ3QgaGFuZGxlIGl0IGlmIGEgc3Vic2Vx dWVudCAjTUMgaXMgdG8gYSBkaWZmZXJlbnQgcGFnZSAoYmVjYXVzZQ0Kd2Ugb25seSBoYXZlIGEg c2luZ2xlIHNwb3QgaW4gdGhlIHRhc2sgc3RydWN0dXJlIHRvIHN0b3JlIHRoZSBwaHlzaWNhbCBw YWdlDQphZGRyZXNzKS4gIEJ1dCB0aGF0IGxvb2tzIGFkZXF1YXRlLiBJZiB0aGUgY29kZSBpcyB3 aWxkbHkgYWNjZXNzaW5nIGRpZmZlcmVudA0KcGFnZXMgKmFuZCogZ2V0dGluZyBtYWNoaW5lIGNo ZWNrcyBmcm9tIHRob3NlIGRpZmZlcmVudCBwYWdlcyAuLi4gdGhlbg0Kc29tZXRoaW5nIGlzIHZl cnkgc2VyaW91c2x5IHdyb25nIHdpdGggdGhlIHN5c3RlbS4NCg0KLVRvbnkNCg0K