netdev - Re: [PATCH net] ipv6: flowlabel: fl6_sock_lookup() must use atomic_inc_not

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Date:   Thu, 6 Jun 2019 14:27:29 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Willem de Bruijn <willemb@...gle.com>
Subject: Re: [PATCH net] ipv6: flowlabel: fl6_sock_lookup() must use atomic_inc_not_zero

On Thu, Jun 6, 2019 at 2:22 PM Eric Dumazet <edumazet@...gle.com> wrote:
>
> RCU 101 : Before taking a refcount, make sure the object is not already
>           scheduled for deletion.
>

I will send a V2, there is a second atomic_inc() which needs to be
changed in ipv6_flowlabel_opt()