io_setup(0x400, &(0x7f0000000140)=<r0=>0x0)
r1 = openat$ttyS3(0xffffffffffffff9c, &(0x7f0000000180), 0x0, 0x0)
io_submit(r0, 0x1, &(0x7f0000000780)=[&(0x7f0000000200)={0x0, 0x0, 0x0, 0x0, 0x0, r1, 0x0}])