pipe2$9p(&(0x7f0000000100)={0xffffffffffffffff, <r0=>0xffffffffffffffff}, 0x0)
r1 = openat$ttyS3(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
splice(r1, 0x0, r0, 0x0, 0x2, 0x0)