pipe2(&(0x7f0000000400)={0xffffffffffffffff, <r0=>0xffffffffffffffff}, 0x0)
r1 = socket$inet6_tcp(0xa, 0x1, 0x0)
splice(r1, &(0x7f00000007c0), r0, 0x0, 0x7c00000000000000, 0x0)