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

To: "David S. Miller" <davem@xxxxxxxxxxxxx>
Subject: Re: PROBLEM: 2.6.11-rc2 hangs on bridge shutdown (br0)
From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Date: Sat, 5 Feb 2005 21:45:59 +1100
Cc: mirko.parthey@xxxxxxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx, yoshfuji@xxxxxxxxxxxxxx, shemminger@xxxxxxxx
In-reply-to: <20050205064643.GA29758@xxxxxxxxxxxxxxxxxxx>
References: <20050131162201.GA1000@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20050205052407.GA17266@xxxxxxxxxxxxxxxxxxx> <20050204213813.4bd642ad.davem@xxxxxxxxxxxxx> <20050205061110.GA18275@xxxxxxxxxxxxxxxxxxx> <20050204221344.247548cb.davem@xxxxxxxxxxxxx> <20050205064643.GA29758@xxxxxxxxxxxxxxxxxxx>
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On Sat, Feb 05, 2005 at 05:46:43PM +1100, herbert wrote:
> 
> This doesn't work because net/core/dst.c can only search based
> on dst->dev.  For the split device case, dst->dev is set to
> loopback_dev while rt6i_idev is set to the real device.

Although I still think this is a bug, I'm now starting to suspect
that there is another bug around as well.

There is probably an ifp leak which in turn leads to a split dst
leak that allows the first bug to make its mark.
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