r0 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
r1 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./file0\x00', 0x105142, 0x0)
fallocate(r1, 0x0, 0x0, 0x20fdef)
sendfile(r0, r1, 0x0, 0x182)