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Re: PROBLEM: 2.6.11-rc2 hangs on bridge shutdown (br0)

To: "YOSHIFUJI Hideaki / ?$B5HF#1QL@" <yoshfuji@xxxxxxxxxxxxxx>
Subject: Re: PROBLEM: 2.6.11-rc2 hangs on bridge shutdown (br0)
From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Date: Sun, 6 Feb 2005 05:33:46 +1100
Cc: andre@xxxxxxxx, davem@xxxxxxxxxxxxx, mirko.parthey@xxxxxxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, shemminger@xxxxxxxx
In-reply-to: <20050205.203900.66065862.yoshfuji@xxxxxxxxxxxxxx>
References: <20050204213813.4bd642ad.davem@xxxxxxxxxxxxx> <20050205061110.GA18275@xxxxxxxxxxxxxxxxxxx> <4204AA7C.9010509@xxxxxxxx> <20050205.203900.66065862.yoshfuji@xxxxxxxxxxxxxx>
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On Sat, Feb 05, 2005 at 08:39:00PM +0900, YOSHIFUJI Hideaki / ?$B5HF#1QL@ wrote:
> 
> I think "Make loopback idev stick around" patches
> (for IPv4 and IPv6) could be start of that.

Unfortunately that patch can't fix this particular problem.  This
problem will show up whenever there is a dst on the GC list that
has split devices and a non-zero refcnt.

So if you had a process holding that dst you can still get a dead-lock.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
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