RE: [Patch bpf-next] skmsg: pass psock pointer to ->psock_update_sk_prot()

Cong Wang wrote:

From: Cong Wang <redacted>

Using sk_psock() to retrieve psock pointer from sock requires
RCU read lock, but we already get psock pointer before calling
->psock_update_sk_prot() in both cases, so we can just pass it
without bothering sk_psock().

Reported-and-tested-by: syzbot+320a3bc8d80f478c37e4@syzkaller.appspotmail.com
Fixes: 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()")
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jakub Sitnicki <jakub@cloudflare.com>
Cc: Lorenz Bauer <redacted>
Signed-off-by: Cong Wang <redacted>
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Thanks.

Acked-by: John Fastabend <john.fastabend@gmail.com>