From owner-freebsd-emulation@FreeBSD.ORG Mon Feb 22 19:36:16 2010 Return-Path: Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 36EAF10656A7; Mon, 22 Feb 2010 19:36:16 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 05A168FC1A; Mon, 22 Feb 2010 19:36:16 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 9280F46B2D; Mon, 22 Feb 2010 14:36:15 -0500 (EST) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPA id 2F35E8A01F; Mon, 22 Feb 2010 14:36:03 -0500 (EST) From: John Baldwin To: Attilio Rao Date: Mon, 22 Feb 2010 12:02:29 -0500 User-Agent: KMail/1.12.1 (FreeBSD/7.2-CBSD-20100120; KDE/4.3.1; amd64; ; ) References: <179b97fb1001270941m2d8e9c8au20abc798c16b9c11@mail.gmail.com> <3bbf2fe11002201419v52b249ccg8d82c8ae747cf318@mail.gmail.com> In-Reply-To: <3bbf2fe11002201419v52b249ccg8d82c8ae747cf318@mail.gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201002221202.29747.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Mon, 22 Feb 2010 14:36:03 -0500 (EST) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.3 required=4.2 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: freebsd-fs@freebsd.org, freebsd-emulation@freebsd.org, stable-list freebsd Subject: Re: ZFS and sh(1) panic: spin lock [lock addr] (smp rendezvous) held by [sh(1) proc tid] too long X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Feb 2010 19:36:16 -0000 On Saturday 20 February 2010 5:19:39 pm Attilio Rao wrote: > 2010/1/27 Brandon Gooch : > > The machine, a Dell Optiplex 755, has been locking up recently. The > > situation usually occurs while using VirtualBox (running a 64-bit > > Windows 7 instance) and doing anything else in another xterm (such as > > rebuilding a port). I've been unable to reliably reproduce it (I'm in > > an X session and the machine will not panic "properly"). > > > > However, while rebuilding Xorg today at ttyv0 and runnning > > VBoxHeadless on ttyv1, I managed to trigger what I believe is the > > lockup. > > > > I've attached a textdump in hopes that someone may be able to take a > > look and provide clues or instruction on debugging this. > > I think that jhb@ saw a similar problem while working on nVidia driver > or the like. > Not sure if he made any progress to debug this. That was due to a weird bug where I was accidentally zero'ing the local APIC due to a then-bug in sg_pager.c (it was forcing the VM system to clear the pages it mapped by accident). That should not be the explanation for this. -- John Baldwin