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From: Robert Watson <rwatson@FreeBSD.org>
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To: Vlad GALU <dudu@dudu.ro>
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Cc: Jeremy Chadwick <koitsu@FreeBSD.org>, freebsd-stable@freebsd.org
Subject: Re: UDP LOR with the latest RELENG_7
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On Fri, 10 Oct 2008, Robert Watson wrote:

> On Fri, 10 Oct 2008, Jeremy Chadwick wrote:
>
>>>   I'll see whether the system still locks up or not though..
>> 
>> Okay, I'm bringing rwatson@ into the thread since this is specific to UDP.
>
> I've now fixed the bug leading to the lock order reversal; I'd be interested 
> in knowing if it also corrects the stability issue.  This was r183753 in 
> svn; I'm not sure it's hit CVS/cvsup yet but should do in a few minutes.

Dear Vlad:

Could you confirm that with udp_usrreq.c:1.218.2.7 (or newer), the problem has 
gone away?  CVS log excerpt below.

Thanks,

Robert N M Watson
Computer Laboratory
University of Cambridge

revision 1.218.2.7
date: 2008/10/10 21:18:12;  author: rwatson;  state: Exp;  lines: +8 -8
SVN rev 183753 on 2008-10-10 21:18:12Z by rwatson

Test the soreceive_dgram tunable and set up the pr_usrreqs structure
during UDP initialization, not during UDP inpcb initialization.

Reported by:    Vlad GALU <dudu at dudu dot ro>
Approved by:    re (kib)