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Date:      Tue, 3 Nov 2009 08:08:15 +0000 (GMT)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        Ian Freislich <ianf@clue.co.za>
Cc:        FreeBSD-Current <freebsd-current@freebsd.org>
Subject:   Re: Believed fixed (was: Re: Another panic (during netisr?))
Message-ID:  <alpine.BSF.2.00.0911030807540.37561@fledge.watson.org>
In-Reply-To: <E1N5CEF-0002fT-Mm@clue.co.za>
References:  <E1N5CEF-0002fT-Mm@clue.co.za>

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On Tue, 3 Nov 2009, Ian Freislich wrote:

> Robert Watson wrote:
>> Since debugging this went offline, the quick summary for the list is: it 
>> looks like a race condition in the read-write locking for tcbinfo in 
>> 8.x/9.x was responsible, and I've now committed a fix to head and merged to 
>> stable/8 this morning.  If this recurs with the fix, please let me know, 
>> because that would mean we fixed the wrong bug. :-)
>
> Since this I've not had a panic on our routers in the last 25 days. Before, 
> it would panic about every 5 days with a corrupted stack.

Sounds good, thanks!

Robert N M Watson
Computer Laboratory
University of Cambridge



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