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From:   Matteo Croce <mcroce@redhat.com>
Date:   Mon, 24 Feb 2020 20:42:29 +0100
Message-ID: <CAGnkfhyUOyd1XWdSSxL844RG-_z32qGasV7a+2m7XNrS8qvtCw@mail.gmail.com>
Subject: Re: [PATCH nf] netfilter: ensure rcu_read_lock() in ipv4_find_option()
To:     Florian Westphal <fw@strlen.de>
Cc:     netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
        netdev <netdev@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@netfilter.org>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Stephen Suryaputra <ssuryaextr@gmail.com>
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On Mon, Feb 24, 2020 at 8:12 PM Florian Westphal <fw@strlen.de> wrote:
>
> Matteo Croce <mcroce@redhat.com> wrote:
> > As in commit c543cb4a5f07 ("ipv4: ensure rcu_read_lock() in ipv4_link_failure()")
> > and commit 3e72dfdf8227 ("ipv4: ensure rcu_read_lock() in cipso_v4_error()"),
> > __ip_options_compile() must be called under rcu protection.
>
> This is not needed, all netfilter hooks run with rcu_read_lock held.
>

Ok, so let's drop it, thanks.

-- 
Matteo Croce
per aspera ad upstream