Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752797AbdI3LxT (ORCPT ); Sat, 30 Sep 2017 07:53:19 -0400 Received: from mail.skyhub.de ([5.9.137.197]:34108 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751677AbdI3LxT (ORCPT ); Sat, 30 Sep 2017 07:53:19 -0400 Date: Sat, 30 Sep 2017 13:53:02 +0200 From: Borislav Petkov To: Adam Borowski Cc: linux-kernel@vger.kernel.org, Andy Lutomirski , x86-ml Subject: Re: random insta-reboots on AMD Phenom II Message-ID: <20170930115302.ezvch7pdx7ws2k5h@pd.tnic> References: <20170930020516.sybqsf5yn2gzuph3@angband.pl> <20170930111137.sxmygy3577iu2hj4@pd.tnic> <20170930112903.kompuesgn6jjuwil@angband.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20170930112903.kompuesgn6jjuwil@angband.pl> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 726 Lines: 33 On Sat, Sep 30, 2017 at 01:29:03PM +0200, Adam Borowski wrote: > On Sat, Sep 30, 2017 at 01:11:37PM +0200, Borislav Petkov wrote: > > On Sat, Sep 30, 2017 at 04:05:16AM +0200, Adam Borowski wrote: > > > Any hints how to debug this? > > > > Do > > rdmsr -a 0xc0010015 > > as root and paste it here. > > 1000010 > 1000010 > 1000010 > 1000010 > 1000010 > 1000010 > > on both 4.13.4 and 4.14-rc2+. Boot into -rc2+ and do as root: # wrmsr -a 0xc0010015 0x1000018 If the issue gets fixed then Mr. Luto better revert the new lazy TLB flushing fun'n'games for 4.14 before it is too late and that kernel releases b0rked. Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.