7.2-release/amd64: panic, spin lock held too long

[barbara]

> > I hope you can get some crash dumps for the developers to look at,
> > Attilio was trying to help me but sadly the machine had to be put into
> > active use so I could no longer play with FreeBSD due to unsolved
> > instability.
> 
> I want to help investigate this problem also but I remembered that the
> /var/crash was empty after the panic.. Just the same as your
> situation.
> So is there other ways to get the crash dumps?
> My machine is also put into service now but I think it should be OK
> for a short down time.

Could that one (on i386) be related?
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/134584