panic in daprobedone: Unholding 4 with cnt = 0

[Hans Petter Selasky]

On 02/17/18 15:47, Warner Losh wrote:
> That's interesting. What did you do to get there? There's some code path
> that's unholding the periph without first holding it. I've been trying to
> find a scenario.
> 

I just booted into single user mode with a multi-card USB reader 
attached. Seems like some kind of race. Doesn't happen during normal boot.

--HPS