Re: IGMPv3 hot interface detach panics?

From: Coleman Kane <cokane_at_FreeBSD.org>
Date: Thu, 12 Mar 2009 23:37:01 -0400
FWIW I just started experiencing a panic that seems to happen in the
igmp code whenever I attempt to "dhclient wlan0"...

I'll try to get more info for ya tomorrow.

The short story is that I just reverted a patch I had made to remove
USB-NDIS stuff (because my adapter is PCI), since I saw that the
ndis_usb --> ndis_usb2 fix was committed.

I can safely use my system on the wired network (bge0) though, and
wpa_supplicant seems to work alright on the ndis card.

On Thu, 2009-03-12 at 03:46 +0000, Bruce Simpson wrote:
> Can I have some volunteers please...
> Sam reports a panic when detaching a card on the fly with the IGMPv3 code.
> 
> Whilst I've taken a few precautions in the netisr against this, most 
> likely there is something getting used-after-free in the domifdetach 
> ping-pong which I've missed in the rush.
> So to track this down, I really need a backtrace with full debugging 
> symbols. I would encourage anyone who may face a similar issue to try to 
> reproduce it with HEAD and send me a full backtrace.
> 
> I may not get around to fixing this right away -- already on other stuff 
> -- but will try to as time arises.
> 
> Many thanks,
> BMS
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-- 
Coleman Kane

Received on Fri Mar 13 2009 - 02:53:32 UTC

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