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From:   David Howells <dhowells@redhat.com>
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To:     Hawkins Jiawei <yin31149@gmail.com>
Cc:     dhowells@redhat.com, "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>,
        Martin KaFai Lau <kafai@fb.com>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org,
        linux-kernel-mentees@lists.linuxfoundation.org, bpf@vger.kernel.org
Subject: Re: [PATCH] net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()
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Date:   Tue, 16 Aug 2022 14:09:46 +0100
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Hawkins Jiawei <yin31149@gmail.com> wrote:

>  	if (socks) {
>  		WRITE_ONCE(sk->sk_user_data, NULL);

Btw, shouldn't this be rcu_assign_pointer() or RCU_INIT_POINTER(), not
WRITE_ONCE()?

David