From owner-freebsd-current@FreeBSD.ORG  Wed Dec 28 05:38:18 2005
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Date: Tue, 27 Dec 2005 22:38:03 -0700 (MST)
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To: mph@lima.dyndns.dk
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: freebsd-current@freebsd.org
Subject: Re: if_dc.c causes page fault while in kernel mode; coredump;
 reproducible
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In message: <20051228002430.GA27330@echobase.hoth.dk>
            "Martin P. Hansen" <mph@lima.dyndns.dk> writes:
: On Tue, 27 Dec 2005, Gleb Smirnoff wrote:
: >   please try out the attached patch.
: 
: It works. Thank you very much.
: 
: Just of curiosity, why is the NIC still active when the system shuts
: down? I mean is the ``IFF_DRV_RUNNING'' _the_ method to stop an
: interface?

Just because an interface has been stopped, doesn't mean that its ISR
won't be called because another (shared) interrupt happens.

: I though in a simple setup one would disable the devices when
: shutting down by disabling interrupts or raising the interrupt
: priority level.

Without shared interrupts, one can usually get away with this...

Warner