From: Eric Dumazet <eduma...@google.com>
Date: Tue, 5 Jun 2018 09:25:19 -0700
> It seems that rtnl_group_changelink() can call do_setlink
> while a prior call to validate_linkmsg(dev = NULL, ...) could
> not validate IFLA_ADDRESS / IFLA_BROADCAST
>
> Make sure do_setlink() calls validate_linkmsg() instead
> of letting its callers having this responsibility.
>
> With help from Dmitry Vyukov, thanks a lot !
...
> Fixes: e7ed828f10bd ("netlink: support setting devgroup parameters")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-by: syzbot <syzkal...@googlegroups.com>
Applied and queued up for -stable.
