callout_reset page fault panic

[John Baldwin]

On Wednesday 24 May 2006 16:22, Pawel Worach wrote:
> John Baldwin wrote:
> > On Saturday 20 May 2006 09:22, Pawel Worach wrote:
> >> One day old CURRENT, i368 UP. Died while installing some ports and 
> >> running mplayer. vmcore and kernel available (minidumps kick ass!).
> >>
> >> Unread portion of the kernel message buffer:
> >> kernel trap 12 with interrupts disabled
> > 
> > I think the previous 'struct callout' on the callout wheel
> > is unmapped, maybe a kernel module was unloaded and it forgot
> > to do a callout_stop() or callout_drain() or somehow did a
> > callout_reset() after doing the stop() or drain()?
> > 
> 
> If nothing was unloaded automagically it's unlikely.

It could have been free'd perhaps and the page later subsequently unmapped 
from KVA?  (Not sure if that can happen.)

-- 
John Baldwin