calcru-triggered panic?

[John Baldwin]

On Monday 20 November 2006 16:38, Rene Ladan wrote:
> Hi,
> 
> I got the attached panic on CURRENT 2006-11-17.
> 
> It was preceded by a lot of 'calcru' messages.

The calcru messages you can ignore.

This is the real problem:

panic: blockable sleep lock (sleep mutex) tty 
@ /usr/src-current/sys/kern/kern_event.c:1670

This panic is due to the recent changes to printf to try to buffer the printf 
output.  It now runs cnputc() under a critical section and syscons(4) tries 
to do a ttwakeup() which invokes KNOTE() and tries to lock a regular mutex 
while inside the critical section.  I'm not sure how best to fix this.

-- 
John Baldwin