r0 = syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = dup(r0)
recvmmsg$unix(r1, &(0x7f00000077c0)=[{{0x0, 0x0, 0x0}}], 0x1, 0x40, 0x0)