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

[雞]

> 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.

Regards,
C.C.