io_setup(0xff, &(0x7f0000001700)=<r0=>0x0)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000001740)={<r1=>0xffffffffffffffff, <r2=>0xffffffffffffffff})
dup3(r2, r1, 0x0)
io_submit(r0, 0x1, &(0x7f0000001b80)=[&(0x7f0000001800)={0x0, 0x0, 0x0, 0x5, 0x0, r1, 0x0}])