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[ Upstream commita562c0a2d6] Busy polling while holding the socket lock makes litle sense, because incoming packets wont reach our receive queue. Fixes:8465a5fcd1("sctp: add support for busy polling to sctp protocol") Reported-by: Jacob Moroni <jmoroni@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Cc: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>