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Date: Tue, 9 Aug 2005 11:29:11 -0400
From: Ed Maste <emaste@phaedrus.sandvine.ca>
To: Robert Watson <rwatson@FreeBSD.org>
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Cc: freebsd-net@freebsd.org
Subject: Re: Multicast locking LOR
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On Mon, Aug 08, 2005 at 10:34:53PM +0100, Robert Watson wrote:

> Could you add a hard-coded entry to WITNESS to place the udpinp lock
> before the in_multi_mtx in the lock order, and let me know which path
> resulted in the opposite order from this one?

I hard-coded the correct order, but am now unable to reproduce the
problem.  I guess Murphy's Law at work.  I suspect you're right about
IGMP's packet getting back into ip_input.

I'll post another message if I can get it to happen again.

-ed