Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1754860AbdGJVYJ (ORCPT <rfc822;w@1wt.eu>);
        Mon, 10 Jul 2017 17:24:09 -0400
Received: from mail-wr0-f176.google.com ([209.85.128.176]:35299 "EHLO
        mail-wr0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1754503AbdGJVYI (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 10 Jul 2017 17:24:08 -0400
Date: Tue, 11 Jul 2017 00:24:04 +0300
From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Andy Lutomirski <luto@kernel.org>
Cc: Dmitry Vyukov <dvyukov@google.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        "x86@kernel.org" <x86@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Andi Kleen <ak@linux.intel.com>,
        Dave Hansen <dave.hansen@intel.com>,
        linux-arch <linux-arch@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>,
        kasan-dev <kasan-dev@googlegroups.com>
Subject: Re: KASAN vs. boot-time switching between 4- and 5-level paging
Message-ID: <20170710212403.7ycczkhhki3vrgac@node.shutemov.name>
References: <CACT4Y+bSTOeJtDDZVmkff=qqJFesA_b6uTG__EAn4AvDLw0jzQ@mail.gmail.com>
 <c4f11000-6138-c6ab-d075-2c4bd6a14943@virtuozzo.com>
 <75acbed7-6a08-692f-61b5-2b44f66ec0d8@virtuozzo.com>
 <bc95be68-8c68-2a45-c530-acbc6c90a231@virtuozzo.com>
 <20170710123346.7y3jnftqgpingim3@node.shutemov.name>
 <CACT4Y+aRbC7_wvDv8ahH_JwY6P6SFoLg-kdwWHJx5j1stX_P_w@mail.gmail.com>
 <20170710141713.7aox3edx6o7lrrie@node.shutemov.name>
 <03A6D7ED-300C-4431-9EB5-67C7A3EA4A2E@amacapital.net>
 <20170710184704.realchrhzpblqqlk@node.shutemov.name>
 <CALCETrVJQ_u-agPm8fFHAW1UJY=VLowdbM+gXyjFCb586r0V3g@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CALCETrVJQ_u-agPm8fFHAW1UJY=VLowdbM+gXyjFCb586r0V3g@mail.gmail.com>
User-Agent: NeoMutt/20170609 (1.8.3)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 334
Lines: 11

On Mon, Jul 10, 2017 at 01:07:13PM -0700, Andy Lutomirski wrote:
> Can you give the disassembly of the backtrace lines?  Blaming the
> .endr doesn't make much sense to me.

I don't have backtrace. It's before printk() is functional. I only see
triple fault and reboot.

I had to rely on qemu tracing and gdb.

-- 
 Kirill A. Shutemov