tcp, ulp: enforce sock_owned_by_me upon ulp init and cleanup
Whenever the ULP data on the socket is mangled, enforce that the caller has the socket lock held as otherwise things may race with initialization and cleanup callbacks from ulp ops as both would mangle internal socket state. Joint work with John. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Signed-off-by: NJohn Fastabend <john.fastabend@gmail.com> Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
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