From: Eric Dumazet <eduma...@google.com>
Date: Wed, 14 Mar 2018 09:04:16 -0700
> Andrei Vagin reported a KASAN: slab-out-of-bounds error in
> skb_update_prio()
>
> Since SYNACK might be attached to a request socket, we need to
> get back to the listener socket.
> Since this listener is manipulated without locks, add const
> qualifiers to sock_cgroup_prioidx() so that the const can also
> be used in skb_update_prio()
>
> Also add the const qualifier to sock_cgroup_classid() for consistency.
>
> Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead
> of listener")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-by: Andrei Vagin <ava...@virtuozzo.com>
Applied and queued up for -stable, thanks!
