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Date:      Wed, 5 Dec 2001 08:22:03 -0800
From:      Luigi Rizzo <luigi@FreeBSD.ORG>
To:        Michael Nottebrock <michaelnottebrock@gmx.net>
Cc:        net@FreeBSD.ORG
Subject:   Re: HEADS-UP: net polling code now in STABLE.
Message-ID:  <20011205082203.A63639@iguana.aciri.org>
In-Reply-To: <3C0E3856.2000507@gmx.net>
References:  <20011203221742.A50473@iguana.aciri.org> <3C0CBE2D.1050505@gmx.net> <20011204175148.B58039@iguana.aciri.org> <3C0E3856.2000507@gmx.net>

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On Wed, Dec 05, 2001 at 04:08:06PM +0100, Michael Nottebrock wrote:
> Luigi Rizzo wrote:
> 
> >i just committed a patch to dev/fxp/if_fxp.c pci/if_dc.c and
> >pci/if_sis.c which should fix this. It's a very simple one so you
> >can just fetch the diff from the cvs repository and rebuild the
> >kernel, without having to upgrade the whole system.
> 
> The system boots fine now, but I got one page fault panic very similar 
> to the one I already reported again when I tried to reboot. Not sure if 

do you have a "dc" or "sis" interface in your system, by chance ?

I used to get a panic on reboot, in a previous version of the
code, which disappeared when i introduced the check for IFF_RUNNING
before invoking xx_poll() on the device.
If it happens again, please let me know, maybe together with
the list of interfaces you have.

(I notice that the original code in dc_stop() and sis_stop() is
slightly incorrect, because it first frees resources and then marks
the interface as not RUNNING. This might lead to a race and explains
the panic and why it does not happen all the times).

	cheers
	luigi
----------------------------------+-----------------------------------------
 Luigi RIZZO, luigi@iet.unipi.it  . ACIRI/ICSI (on leave from Univ. di Pisa)
 http://www.iet.unipi.it/~luigi/  . 1947 Center St, Berkeley CA 94704
 Phone: (510) 666 2927
----------------------------------+-----------------------------------------

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