netdev - Re: 3.12-rc7 regression - network panic from ipv6

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Message-Id: <20131029.174258.1677867676998240250.davem@davemloft.net>
Date:	Tue, 29 Oct 2013 17:42:58 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	mroos@...ux.ee
Cc:	hannes@...essinduktion.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, steffen.klassert@...unet.com
Subject: Re: 3.12-rc7 regression - network panic from ipv6

From: Meelis Roos <mroos@...ux.ee>
Date: Tue, 29 Oct 2013 23:38:28 +0200 (EET)

>> > Some bad news - in a system where 3.12-rc6 and earlier worked fine, 
>> > 3.12-rc7 panics or hangs repeatedly with network traffic (torrent being 
>> > good test). First there is BUG from ipv6 code, followed by panic.
>> 
>> Could you do a bisect on this? There seems to be one commit for this
>> particular function _decode_session6:
>> 
>> commit bafd4bd4dcfa13145db7f951251eef3e10f8c278
>> Author: Steffen Klassert <steffen.klassert@...unet.com>
>> Date:   Mon Sep 9 10:38:38 2013 +0200
>> 
>>     xfrm: Decode sessions with output interface.
>>     
>>     The output interface matching does not work on forward
>>     policy lookups, the output interface of the flowi is
>>     always 0. Fix this by setting the output interface when
>>     we decode the session.
>> 
>> Maybe try to just revert this change locally and try again?
> 
> Yes, just reverting this patch on top of rc7 gets rid of the problem for 
> me.

Steffen please fix this or I'll have to revert.
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