r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
r1 = fcntl$dupfd(r0, 0x0, r0)
sendmsg$unix(r1, &(0x7f000000a940)={0x0, 0x0, 0x0}, 0xb78228c943e7baa1)