Re: [PATCH 2/2] net caif: Register properly as a pernet subsystem.

From: Sasha Levin
Date: Fri Jan 27 2012 - 08:24:28 EST


On Thu, 2012-01-26 at 16:04 -0800, Eric W. Biederman wrote:
> caif is a subsystem and as such it needs to register with
> register_pernet_subsys instead of register_pernet_device.
>
> Among other problems using register_pernet_device was resulting in
> net_generic being called before the caif_net structure was allocated.
> Which has been causing net_generic to fail with either BUG_ON's or by
> return NULL pointers.
>
> A more ugly problem that could be caused is packets in flight why the
> subsystem is shutting down.
>
> To remove confusion also remove the cruft cause by inappropriately
> trying to fix this bug.
>
> With the aid of the previous patch I have tested this patch and
> confirmed that using register_pernet_subsys makes the failure go away
> as it should.
>
> Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>

I've tested these two patches as well, and they also work for me.

Tested-by: Sasha Levin <levinsasha928@xxxxxxxxx>

--

Sasha.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/