Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752693AbdHKKHc (ORCPT ); Fri, 11 Aug 2017 06:07:32 -0400 Received: from mail.skyhub.de ([5.9.137.197]:42524 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751618AbdHKKHb (ORCPT ); Fri, 11 Aug 2017 06:07:31 -0400 Date: Fri, 11 Aug 2017 12:07:04 +0200 From: Borislav Petkov To: Satoru Takeuchi Cc: LKML , x86@kernel.org Subject: Re: [FYI] GCC segfaults under heavy multithreaded compilation with AMD Ryzen Message-ID: <20170811100704.GA10069@nazgul.tnic> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.0 (2016-04-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1625 Lines: 35 On Wed, Jul 26, 2017 at 06:54:01AM +0900, Satoru Takeuchi wrote: > # I'm a LKML subscriber, but not a x86 list subscriber > > I found the following new linux kernel bugzilla about Ryzen related problem. > Since many developers don't check this bugzilla and I've also > encountered this problem, > I decided to introduce this problem here. > > https://bugzilla.kernel.org/show_bug.cgi?id=196481: > > I am running Ubuntu and installed the mainline kernel from the mainline PPA. > > It seems like the Ryzen processor has some bug that leads to gcc crashing > > when compiling a very large program under heavy load. This is easily reproduced > > in my system using the script from > > > > https://github.com/suaefar/ryzen-test > > > > (It assumes that you are running Ubuntu, maybe Debian also works. Just clone it and run the > script kill_ryzen.sh. It downloads the gcc 7.1 code and start multiple compilations of it. If any > > compilations fails its warns the user giving the time to detect failure). > > > > There is already a bug report about this in the FreeBSD bugzilla > > (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399#c89). > > There is also a thread on the subject in AMD community forum > > (https://community.amd.com/thread/215773?start=300&tstart=0) > > and Phoronix (https://www.phoronix.com/forums/forum/hardware/processors-memory/955368-some-ryzen-linux-users-are-facing-issues-with-heavy-compilation-loads). Apparently, you can RMA your CPU: https://www.phoronix.com/scan.php?page=news_item&px=Ryzen-Segv-Response -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. --