From: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
Date: Thu, 11 Apr 2019 15:08:25 +0300
> br_multicast_start_querier() walks over the port list but it can be
> called from a timer with only multicast_lock held which doesn't protect
> the port list, so use RCU to walk over it.
>
> Fixes: c83b8fab06fc ("bridge: Restart queries when last querier expires")
> Signed-off-by: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
Applied and queued up for -stable, thanks.
