netdev - Re: ip6_udp_tunnel fails to load

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Date:	Tue, 23 Sep 2014 09:55:31 -0700
From:	Tom Herbert <therbert@...gle.com>
To:	Eyal perry <eyalpe@....mellanox.co.il>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Andy Zhou <azhou@...ira.com>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Amir Vadai <amirv@...lanox.com>
Subject: Re: ip6_udp_tunnel fails to load

On Tue, Sep 23, 2014 at 9:33 AM, Eyal perry <eyalpe@....mellanox.co.il> wrote:
> On 9/23/2014 6:39 PM, Eric Dumazet wrote:
>> On Tue, 2014-09-23 at 18:21 +0300, Eyal perry wrote:
>>> Hello Andy,
>>>
>>> Lately I've start to observe a phenomena where the mlx4_en driver
>>> couldn't load on my system as a result of an 'Unknown symbol in module'.
>>>
>>> [ 1277.458715] ip6_udp_tunnel: Unknown symbol ip6_local_out (err 0)
>>> [ 1277.486810] ip6_udp_tunnel: Unknown symbol __put_net (err 0)
>>>
>>> Apparently, the mlx4_en driver is depend on the vxlan driver, which
>>> depends on the ip6_udp_tunnel module which fails to load.
>>>
>>> 1. I've bisected this issue down to the following commit:
>>> fd38441 udp_tunnel: Seperate ipv6 functions into its own file.
>>>
>>> 2. on a different host with a different .config, the module is loads
>>> cleanly.
>>>
>>> 3. my sources are based on net-next commit
>>> 6d967f8 udp_tunnel: Only build ip6_udp_tunnel.c when IPV6 is selected
>>>
>>> I'll send you both of the .config files in a private message.
>>>
>>> This issue is making any driver which is depend on vxlan/ip6_udp_tunnel
>>> unusable, please take a look and fix
>>
>> Have you tried this patch ?
>>
>> https://patchwork.ozlabs.org/patch/392275/
>>
>> Thanks
>
Try https://patchwork.ozlabs.org/patch/392109/

Tom

> Hello Eric,
>
> Now I've tried but it still fails - the vxlan is still depends on the
> ip6_udp_tunnel and it still fails to load because of the missing symbols
> mentioned above.
>
>
>
>
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