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Date:      Fri, 7 Nov 2003 13:23:04 -0800
From:      Sam Leffler <sam@errno.com>
To:        Steve Kargl <sgk@troutmask.apl.washington.edu>, "Steven G. Kargl" <kargl@troutmask.apl.washington.edu>
Cc:        freebsd-current@freebsd.org
Subject:   Re: panic: mtx_lock() of spin mutex in ip_output.c
Message-ID:  <200311071323.04145.sam@errno.com>
In-Reply-To: <20031107205456.GA42685@troutmask.apl.washington.edu>
References:  <200311071931.hA7JVjen041745@troutmask.apl.washington.edu> <20031107205456.GA42685@troutmask.apl.washington.edu>

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On Friday 07 November 2003 12:54 pm, Steve Kargl wrote:
> On Fri, Nov 07, 2003 at 11:31:45AM -0800, Steven G. Kargl wrote:
> > I have a Dell 4150 laptop using dhcp and ntpd on the
> > xl0 interface.  I did "ifconfig xl0 down" and received
> > the following panic (hand transcribed :-( ).
> >
> > panic: mtx_lock() of spin mutex (null) @
> > /usr/src/sys/netinet/ip_output.c:266 Stack backtrace:
> > backtrace()
> > panic()
> > panic: process 414(ntpd):2 Giant but isn't blocked on a mutex
> >
> > In ddb> I get,
> >
> > Debugger()
> > panic()
> > propagate_priority()
> > _mtx_lock_sleep()
> > _mtx_lock_flags()
> > softclock()
> > ithread_loop()
> > fork_exit()
> > fork_trampoline()
> >
> > I have a crash dump and kernel.debug if further info is need

Make sure you have rev 1.250 of ip_input.c.

	Sam



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