From owner-freebsd-bugs@FreeBSD.ORG  Thu Aug 12 19:20:04 2010
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
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 8CBF410656A5
	for <freebsd-bugs@hub.freebsd.org>;
	Thu, 12 Aug 2010 19:20:04 +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 4FF808FC1B
	for <freebsd-bugs@hub.freebsd.org>;
	Thu, 12 Aug 2010 19:20:04 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o7CJK47T030032
	for <freebsd-bugs@freefall.freebsd.org>; Thu, 12 Aug 2010 19:20:04 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o7CJK4SA030031;
	Thu, 12 Aug 2010 19:20:04 GMT (envelope-from gnats)
Resent-Date: Thu, 12 Aug 2010 19:20:04 GMT
Resent-Message-Id: <201008121920.o7CJK4SA030031@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,
	Venkatesh Srinivas <me@endeavour.zapto.org>
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id B1C481065693
	for <freebsd-gnats-submit@FreeBSD.org>;
	Thu, 12 Aug 2010 19:15:33 +0000 (UTC)
	(envelope-from nobody@FreeBSD.org)
Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21])
	by mx1.freebsd.org (Postfix) with ESMTP id 8739E8FC12
	for <freebsd-gnats-submit@FreeBSD.org>;
	Thu, 12 Aug 2010 19:15:33 +0000 (UTC)
Received: from www.freebsd.org (localhost [127.0.0.1])
	by www.freebsd.org (8.14.3/8.14.3) with ESMTP id o7CJFXgJ031188
	for <freebsd-gnats-submit@FreeBSD.org>; Thu, 12 Aug 2010 19:15:33 GMT
	(envelope-from nobody@www.freebsd.org)
Received: (from nobody@localhost)
	by www.freebsd.org (8.14.3/8.14.3/Submit) id o7CJFXVN031187;
	Thu, 12 Aug 2010 19:15:33 GMT (envelope-from nobody)
Message-Id: <201008121915.o7CJFXVN031187@www.freebsd.org>
Date: Thu, 12 Aug 2010 19:15:33 GMT
From: Venkatesh Srinivas <me@endeavour.zapto.org>
To: freebsd-gnats-submit@FreeBSD.org
X-Send-Pr-Version: www-3.1
Cc: 
Subject: misc/149587: Lockup on 8.1-RC2 system enabling vm.idlezero
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 12 Aug 2010 19:20:04 -0000


>Number:         149587
>Category:       misc
>Synopsis:       Lockup on 8.1-RC2 system enabling vm.idlezero
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Aug 12 19:20:03 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Venkatesh Srinivas
>Release:        8.1-RC2
>Organization:
>Environment:
FreeBSD manticore.acm.jhu.edu 8.1-RC2 FreeBSD 8.1-RC2 #3 r209893M: Fri Jul 16 16:00:49 EDT 2010     root@manticore.acm.jhu.edu:/usr/obj/usr/local/ncvs/src/sys/DTRACE  amd64

>Description:
Enabling vm.idlezero_enable results in a system lockup a short time later. Problem also witnessed on 8.0-RELEASE; we are unable to drop to ddb on lockup.
>How-To-Repeat:
sysctl vm.idlezero_enable=1
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: