possible race on HEAD?

[Peter Avalos]

On Fri, May 11, 2007 at 12:10:57PM -0700, Matthew Dillon wrote:
> 
> : _lwkt_gettokref
> :mp_lock =3D 00000000; cpuid =3D 0; lapic.id =3D 00000000
> :boot() called on cpu#0
> :Uptime: 1d19h17m16s
> :
> :And then it hard locked on me...had to power cycle.
> :
> :--Peter
> 
>     Ok, we have two debugging choices for when this happens again:
> 
>     (1) Debug it while the system is live.  If you want to give me
> 	access when it happens again I can send you my ssh key and
> 	I can try to debug the problem while the system is live.
> 

Sure, next time it happens, I'll let you know.  You need normal user access,
root, or console?

>     (2) Disable filesystem syncing before doing the panic.
> 
> 	sysctl kern.sync_on_panic=0
> 
> 	(or 'w sync_on_panic 0' from ddb> before panicing)
> 
> 	Hopefully this will allow the panic to get to the kernel core
> 	dump.

Yeh, I don't know why that disappeared out of my sysctl.conf.  Anyway, it's
back in.

> 
>     Meanwhile I'll start running cvsup on my test box to try to reproduce
>     the problem.
> 

I think it was a combination of the daily scripts and cvsup cron that gummed
something up.  I'm having no problems running cvsup now.

--Peter
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