From owner-freebsd-bugs@FreeBSD.ORG Tue Feb 21 23:10:11 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8A33E1065672 for ; Tue, 21 Feb 2012 23:10:11 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 4EE338FC0A for ; Tue, 21 Feb 2012 23:10:11 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q1LNABrq019193 for ; Tue, 21 Feb 2012 23:10:11 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q1LNABux019192; Tue, 21 Feb 2012 23:10:11 GMT (envelope-from gnats) Resent-Date: Tue, 21 Feb 2012 23:10:11 GMT Resent-Message-Id: <201202212310.q1LNABux019192@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Jamie Gritton Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 42392106564A for ; Tue, 21 Feb 2012 23:05:36 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id 321188FC0C for ; Tue, 21 Feb 2012 23:05:36 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.4/8.14.4) with ESMTP id q1LN5agq037955 for ; Tue, 21 Feb 2012 23:05:36 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.4/8.14.4/Submit) id q1LN5aq0037954; Tue, 21 Feb 2012 23:05:36 GMT (envelope-from nobody) Message-Id: <201202212305.q1LN5aq0037954@red.freebsd.org> Date: Tue, 21 Feb 2012 23:05:36 GMT From: Jamie Gritton To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/165381: powerd(8) eats CPUs for breakfast X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Feb 2012 23:10:11 -0000 >Number: 165381 >Category: kern >Synopsis: powerd(8) eats CPUs for breakfast >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Feb 21 23:10:10 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Jamie Gritton >Release: 9.0 >Organization: >Environment: FreeBSD glorfindel.gritton.org 9.0-RELEASE FreeBSD 9.0-RELEASE #1: Sat Jan 28 23:11:49 MST 2012 gritton@glorfindel.gritton.org:/usr/obj/usr/src/sys/GLORFINDEL amd64 >Description: I have a desktop amd64 system with an Athlon 7750 CPU (don't know the chipset offhand) that I decided to try powerd on, as I'm fond of quiet fans. I set powerd_enable="YES" in rc.conf and ran "sh /etc/rc.d/powerd start". After one or two minutes, my display froze. After resetting the box, I got nothing. After a hard power-cycle, nothing. After waiting ten minutes for everything to get nice and cool and another power cycle, nothing. Not even the first BIOS screen. It was pretty clear something was fried, most likely the CPU. That's OK, I had another currently unused system (don't we all?) and I swapped CPUs... >How-To-Repeat: Swap CPUs and turn the computer on again, without remembering to removed the powerd_enable="YES" like from rc.conf. Sure enough, two minutes later I fried my second CPU. After a quick eBay purchase of a third 7750, this times I remembered to fix my rc.conf and everything works again. I apologize for not having more information, but with no CPU it's hard to get a good crash dump. >Fix: >Release-Note: >Audit-Trail: >Unformatted: