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Date:      Fri, 18 Apr 2008 12:02:47 +0100
From:      "Bruce M. Simpson" <bms@FreeBSD.org>
To:        John Baldwin <jhb@freebsd.org>
Cc:        Petr Holub <hopet@ics.muni.cz>, freebsd-stable@freebsd.org, re@FreeBSD.org
Subject:   Re: panics on 6.3-RELEASE in IP stack
Message-ID:  <48087FD7.5070900@FreeBSD.org>
In-Reply-To: <47FBB24B.60504@FreeBSD.org>
References:  <01ab01c898ca$ce4763e0$6ad62ba0$@muni.cz>	<200804080957.30738.jhb@freebsd.org> <47FBB24B.60504@FreeBSD.org>

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Bruce M. Simpson wrote:
>>>
>>> I started to play with RAT application (ports: mbone/rat + an SVN 
>>> version)
>>> and
>>> it seems to crash my 6.3-RELEASE-p1 box in rather deterministic way. 
>>> Crash
>>> details are shown below. Has anyone seen a problem like this?
>>>     
>>
>> Yes, there's an off-by-one reference count bug in the multicast stuff.
>
> I concur, this fix should really be MFCed. The problem went away in 
> 7.x due to a total rewrite. I am distracted by other stuff at the 
> moment, so, starter's orders...

This just bit me. The fix is in RELENG_6, but it is not present after 
the -p1 tag. So updating to STABLE should fix the problem for Petr.

Whilst 6 is no longer the STABLE branch, I think this really should go 
onto 6 in case any other releases happen from that branch.

cheers
BMS



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