netdev - Re: [PATCH] Fix oops in xfrm4_dst

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Date:	Mon, 26 Feb 2007 12:10:49 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	kaber@...sh.net
Cc:	bwalle@...e.de, miika@....fi, netdev@...r.kernel.org
Subject: Re: [PATCH] Fix oops in xfrm4_dst_destroy()

From: Patrick McHardy <kaber@...sh.net>
Date: Mon, 26 Feb 2007 01:24:37 +0100

> Bernhard Walle wrote:
> > With 2.6.21-rc1, I get an oops when running 'ifdown eth0' and an IPsec
> > connection is active. If I shut down the connection before running 'ifdown
> > eth0', then there's no problem.  The critical operation of this script is to
> > kill dhcpd.
> > 
> > The problem is probably caused by commit with git identifier
> > 4337226228e1cfc1d70ee975789c6bd070fb597c (Linus tree) "[IPSEC]: IPv4 over IPv6
> > IPsec tunnel".
> > 
> > This patch fixes that oops. I don't know the network code of the Linux kernel
> > in deep, so if that fix is wrong, please change it. But please fix the oops. :)
> 
> Looks good, when the xfrm_dst is freed in __xfrm4_bundle_create
> after a failed call to xfrm_dst_lookup the xfrm pointer is not
> set, and this is also expected by xfrm_dst_destroy.
> 
> Acked-by: Patrick McHardy <kaber@...sh.net>

Patch applied, thanks everyone.
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