ZFS and sh(1) panic: spin lock [lock addr] (smp rendezvous) held by [sh(1) proc tid] too long

[Attilio Rao]

2010/1/27 Brandon Gooch <jamesbrandongooch at 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).  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.

Attilio


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