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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 6014DC433B4 for ; Tue, 13 Apr 2021 16:21:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 20D756124B for ; Tue, 13 Apr 2021 16:21:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243769AbhDMQVp (ORCPT ); Tue, 13 Apr 2021 12:21:45 -0400 Received: from mga17.intel.com ([192.55.52.151]:50746 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243617AbhDMQVn (ORCPT ); Tue, 13 Apr 2021 12:21:43 -0400 IronPort-SDR: vDGbHZqvdumhyllk8hPbLu5kZNRWOKNlWBTW6LTLXo92JlMifG0a0jc9VFZ4cilPaOgTexDrK5 ceSzNy30YXJQ== X-IronPort-AV: E=McAfee;i="6200,9189,9953"; 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Tue, 13 Apr 2021 09:13:03 -0700 Received: from fmsmsx610.amr.corp.intel.com ([10.18.126.90]) by fmsmsx610.amr.corp.intel.com ([10.18.126.90]) with mapi id 15.01.2106.013; Tue, 13 Apr 2021 09:13:03 -0700 From: "Luck, Tony" To: Borislav Petkov CC: "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , Andy Lutomirski , Aili Yao , =?utf-8?B?SE9SSUdVQ0hJIE5BT1lBKCDloIDlj6PjgIDnm7TkuZ8p?= Subject: RE: [PATCH 3/4] mce/copyin: fix to not SIGBUS when copying from user hits poison Thread-Topic: [PATCH 3/4] mce/copyin: fix to not SIGBUS when copying from user hits poison Thread-Index: AQHXIdNZ5cXe1TMEnUGYFh4Lw8pmVKqqGL4A//+RoICAAS+iAIAAFhAAgAfbOAD//+zj8A== Date: Tue, 13 Apr 2021 16:13:03 +0000 Message-ID: References: <20210326000235.370514-1-tony.luck@intel.com> <20210326000235.370514-4-tony.luck@intel.com> <20210407211816.GP25319@zn.tnic> <20210407214310.GA479383@agluck-desk2.amr.corp.intel.com> <20210408084958.GC10192@zn.tnic> <20210408170852.GA485019@agluck-desk2.amr.corp.intel.com> <20210413100722.GC16519@zn.tnic> In-Reply-To: <20210413100722.GC16519@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 PiBTbyB3aGF0IEknbSBtaXNzaW5nIHdpdGggYWxsIHRoaXMgZnVuIGlzLCB5ZWFoLCBzdXJlLCB3 ZSBoYXZlIHRoaXMNCj4gZmFjaWxpdHkgb3V0IHRoZXJlIGJ1dCB3aG8ncyB1c2luZyBpdD8gSXMg YW55b25lIGV2ZW4gdXNpbmcgaXQgYXQgYWxsPw0KDQpFdmVuIGlmIG5vIGFwcGxpY2F0aW9ucyBl dmVyIGRvIGFueXRoaW5nIHdpdGggaXQsIGl0IGlzIHN0aWxsIHVzZWZ1bCB0byBhdm9pZA0KY3Jh c2hpbmcgdGhlIHdob2xlIHN5c3RlbSBhbmQganVzdCB0ZXJtaW5hdGUgb25lIGFwcGxpY2F0aW9u L2d1ZXN0Lg0KDQo+IElmIHNvLCBkb2VzIGl0IGV2ZW4gbWFrZSBzZW5zZSwgZG9lcyBpdCBuZWVk IGltcHJvdmVtZW50cywgZXRjPw0KDQpUaGVyZSdzIG9uZSBtb3JlIGl0ZW0gb24gbXkgbG9uZyB0 ZXJtIFRPRE8gbGlzdC4gQWRkIGZpeHVwcyBzbyB0aGF0DQpjb3B5X3RvX3VzZXIoKSBmcm9tIHBv aXNvbiBpbiB0aGUgcGFnZSBjYWNoZSBkb2Vzbid0IGNyYXNoLCBidXQganVzdA0KY2hlY2tzIHRv IHNlZSBpZiB0aGUgcGFnZSB3YXMgY2xlYW4gLi4gLmluIHdoaWNoIGNhc2UgcmUtcmVhZCBmcm9t IHRoZQ0KZmlsZXN5c3RlbSBpbnRvIGEgZGlmZmVyZW50IHBoeXNpY2FsIHBhZ2UgYW5kIHJldGly ZSB0aGUgb2xkIHBhZ2UgLi4uIHRoZQ0KcmVhZCBjYW4gbm93IHN1Y2NlZWQuIElmIHRoZSBwYWdl IGlzIGRpcnR5LCB0aGVuIGZhaWwgdGhlIHJlYWQgKGFuZCByZXRpcmUNCnRoZSBwYWdlIC4uLiBu ZWVkIHRvIG1ha2Ugc3VyZSBmaWxlc3lzdGVtIGtub3dzIHRoZSBkYXRhIGZvciB0aGUgcGFnZQ0K d2FzIGxvc3Qgc28gc3Vic2VxdWVudCByZWFkcyByZXR1cm4gLUVJTyBvciBzb21ldGhpbmcpLg0K DQpQYWdlIGNhY2hlIG9jY3VwaWVzIGVub3VnaCBtZW1vcnkgdGhhdCBpdCBpcyBhIGJpZyBlbm91 Z2gNCnNvdXJjZSBvZiBzeXN0ZW0gY3Jhc2hlcyB0aGF0IGNvdWxkIGJlIGF2b2lkZWQuIEknbSBu b3Qgc3VyZQ0KaWYgdGhlcmUgYXJlIGFueSBvdGhlciBvYnZpb3VzIGNhc2VzIGFmdGVyIHRoaXMg Li4uIGl0IGFsbCBnZXRzIGludG8NCmRpbWluaXNoaW5nIHJldHVybnMgLi4uIG5vdCByZWFsbHkg d29ydGggaXQgdG8gaGFuZGxlIGEgY2FzZSB0aGF0DQpvbmx5IG9jY3VwaWVzIDAuMDAwMDIlIG9m IG1lbW9yeS4NCg0KPiBCZWNhdXNlIGZyb20gd2hlcmUgSSBzdGFuZCBpdCBhbGwgbG9va3MgbGlr ZSB3ZSBkbyBhbGwgdGhlc2UgZmFuY3kNCj4gcmVjb3ZlcnkgdGhpbmdzIGJ1dCBpcyB1c2Vyc3Bh Y2UgZXZlbiBwYXlpbmcgYXR0ZW50aW9uIG9yIHVzaW5nIHRoZW0gb3INCj4gd2hhdGV2ZXIuLi4N Cg0KU2VlIGFib3ZlLiBXaXRoIGNvcmUgY291bnRzIGNvbnRpbnVpbmcgdG8gaW5jcmVhc2UsIHRo ZSBjbG91ZCBzZXJ2aWNlDQpwcm92aWRlcnMgcmVhbGx5IHdhbnQgdG8gc2VlIGZld2VyIGV2ZW50 cyB0aGF0IGNyYXNoIHRoZSB3aG9sZSBwaHlzaWNhbA0KbWFjaGluZSAodGFraW5nIGRvd24gZG96 ZW5zLCBvciBodW5kcmVkcywgb2YgZ3Vlc3QgVk1zKS4NCg0KLVRvbnkNCg==