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Commit67f562e3e1("net/smc: transfer fasync_list in case of fallback") leaves the socket's fasync list pointer within a container socket as well. When the latter is destroyed, '__sock_release()' warns about its non-empty fasync list, which is a dangling pointer to previously freed fasync list of an underlying TCP socket. Fix this spurious warning by nullifying fasync list of a container socket. Fixes:67f562e3e1("net/smc: transfer fasync_list in case of fallback") Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>