Re: 3.12-rc7 regression - network panic from ipv6

From: David Miller
Date: Tue Oct 29 2013 - 17:43:07 EST


From: Meelis Roos <mroos@xxxxxxxx>
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@xxxxxxxxxxx>
>> 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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