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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 EE5A0C432C3 for ; Thu, 14 Nov 2019 18:09:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9A54C20709 for ; Thu, 14 Nov 2019 18:09:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="QU2oLMr8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726640AbfKNSJE (ORCPT ); Thu, 14 Nov 2019 13:09:04 -0500 Received: from mail.skyhub.de ([5.9.137.197]:37896 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726098AbfKNSJE (ORCPT ); Thu, 14 Nov 2019 13:09:04 -0500 Received: from zn.tnic (p200300EC2F15E200329C23FFFEA6A903.dip0.t-ipconnect.de [IPv6:2003:ec:2f15:e200:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id EDBE21EC0C7B; Thu, 14 Nov 2019 19:09:02 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1573754943; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=8zyhxwqKTlBkuN/gtzYWICTpVbITCgZCs6VEKV/QQFE=; b=QU2oLMr8cFpoUBT2Kcqb+kvKm5298gsL6g/8lLPKHHDTnlL/bdRqfmjJp+ZYdRtqRdwcQv 6uRRCmVwdj1wQU+PUOrYvQimrbqALUojzF0glybT8t86oSH2b+jJKslP0yarosC4V9FWXu VAeplvWrJmhcRvdftp7bg0liGTfj5iU= Date: Thu, 14 Nov 2019 19:08:58 +0100 From: Borislav Petkov To: Andy Lutomirski Cc: Sean Christopherson , Jann Horn , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , X86 ML , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , kasan-dev , LKML Subject: Re: [PATCH 2/3] x86/traps: Print non-canonical address on #GP Message-ID: <20191114180858.GA8520@zn.tnic> References: <20191112211002.128278-1-jannh@google.com> <20191112211002.128278-2-jannh@google.com> <20191114174630.GF24045@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 14, 2019 at 10:00:35AM -0800, Andy Lutomirski wrote: > And I think this code should be skipped entirely if error_code != 0. ... or say that the #GP is happening due to a segment descriptor access. Would make the figuring out why it happens a bit simpler as to where to look. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette