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Date: Fri, 11 Apr 2003 16:40:17 -0400 (EDT)
From: Jeff Roberson <jroberson@chesapeake.net>
To: Steve Kargl <sgk@troutmask.apl.washington.edu>
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cc: current@freebsd.org
Subject: Re: ULE nice bugs are fixed.
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On Fri, 11 Apr 2003, Steve Kargl wrote:

> On Fri, Apr 11, 2003 at 02:49:35PM -0400, Jeff Roberson wrote:
> > On Fri, 11 Apr 2003, Steve Kargl wrote:
> >
> > > On Fri, Apr 11, 2003 at 12:08:29AM -0400, Jeff Roberson wrote:
> > > > Could those of you that have been testing it so far please try it out
> > > > again and let me know how it feels?
> > > >
> > >
> > > Jeff,
> > >
> > > There is a noticable delay in switching from a vty
> > > to the X11R6 server.  Although ctl+alt+F8 takes me
> > > back to X11, there is a few second pause during the
> > > redrawing of the screen.
> >
>
> (change deleted)
>
> >
> > I suspect this is due to priority propagation.  I forgot that I had
> > disabled that code.
> >
> > How is it otherwise?
> >
>
> I started to recompile the kernel and while sitting here decided
> to load linux-mozilla.  The system rebooted before linux-mozilla
> displayed a window.  I'm not sure this ULE related.
>
> Whoops.  The system just panic after coming back up from
> a linux-mozilla induce reboot.  I've left the machine
> at the db> prompt.
>
> Here's a hand transcribed backtrace.
>
> panic: Negative nice count.
> Stack backtrace
> bactrace
> panic
> kseq_nice_rem
> kseq_rem
> sched_switchout
> mi_switch
> msleep
> g_io_schedule_down
> g_down_procbody
> fork_exit
> fork_trampoline
>

In ddb please type 'call kseq_print(0)'  This is on UP right?