Date: Mon, 1 Mar 2010 12:37:17 -0600 From: Brandon Gooch <jamesbrandongooch@gmail.com> To: Attilio Rao <attilio@freebsd.org> Cc: freebsd-fs@freebsd.org, freebsd-emulation@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>, stable-list freebsd <freebsd-stable@freebsd.org>, John Baldwin <jhb@freebsd.org> Subject: Re: ZFS and sh(1) panic: spin lock [lock addr] (smp rendezvous) held by [sh(1) proc tid] too long Message-ID: <179b97fb1003011037w4828ca1fj8de0cb5da35dfc3f@mail.gmail.com> In-Reply-To: <3bbf2fe11002201419v52b249ccg8d82c8ae747cf318@mail.gmail.com> References: <179b97fb1001270941m2d8e9c8au20abc798c16b9c11@mail.gmail.com> <3bbf2fe11002201419v52b249ccg8d82c8ae747cf318@mail.gmail.com>
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On Sat, Feb 20, 2010 at 4:19 PM, Attilio Rao <attilio@freebsd.org> wrote: > 2010/1/27 Brandon Gooch <jamesbrandongooch@gmail.com>: >> 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). =A0I'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. > The situation has improved slightly, although attempting to run two VirtualBox guests at the same time inevitably leads to a lock-up. I've just taken to running one at a time. Not ideal, but until more debugging can be done, it's the only option I have. I ran into this using nvidia and radeon both. I can't really find a pattern, but I do see it when Windows is trying to draw a new window, or dim the screen when UAC kicks in... BTW, anyone know how to get a good dump when running Xorg? I'm not sure I've ever been able to, even when I panic on something non related to X or video drivers. -Brandon
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