From: Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>
Date: Wed, 22 Jul 2015 13:03:40 +0200
> From: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
>
> Since slave_changelink support was added there have been a few race
> conditions when using br_setport() since some of the port functions it
> uses require the bridge lock. It is very easy to trigger a lockup due to
> some internal spin_lock() usage without bh disabled, also it's possible to
> get the bridge into an inconsistent state.
>
> Signed-off-by: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
> Fixes: 3ac636b8591c ("bridge: implement rtnl_link_ops->slave_changelink")
Applied and queued up for -stable, thanks.
