From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 103351] Machine check exception on Broadwell quad-core with SpeedStep enabled Date: Mon, 14 Sep 2015 00:32:37 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail.kernel.org ([198.145.29.136]:47384 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752143AbbINAcl (ORCPT ); Sun, 13 Sep 2015 20:32:41 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8A02320663 for ; Mon, 14 Sep 2015 00:32:40 +0000 (UTC) Received: from bugzilla2.web.kernel.org (bugzilla2.web.kernel.org [172.20.200.52]) by mail.kernel.org (Postfix) with ESMTP id 0320A20653 for ; Mon, 14 Sep 2015 00:32:39 +0000 (UTC) In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: linux-pm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=103351 Jonas Platte changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |linux@jonasplatte.de --- Comment #11 from Jonas Platte --- Can reproduce with i7-5775C as well. Adding cpufreq.governor=performance to the kernel command line makes the system more stable, but doesn't completely make the problem go away. I was also able to freeze Fedora 22, not with VM, but with chrooting into my arch system and running the configure script for glade (which is one of the things that reliably freezes my arch install) from there. Running the same script with the Fedora autotools and whatever is called by them doesn't freeze the system. FWIW, me and a few other people affected by this were discussing this are also discussing thing on the arch linux forums (https://bbs.archlinux.org/viewtopic.php?id=201194), and the best guess so far has been that this is caused by some exotic CPU instruction used by a core library like glibc, which is disabled in the Fedora build of that library. -- You are receiving this mail because: You are the assignee for the bug.