Corpus for sendmsg$sock:

Coverage	Program
1559	socket$inet6_udp-sendmsg$sock
1361	socket$inet6_udp-connect$inet6-sendmsg$sock-sendmmsg$inet6
483	perf_event_open-socket$inet6_udp-sendmsg$sock
370	socket$inet6_udp-sendmsg$sock
125	syz_init_net_socket$bt_sco-sendmsg$sock