socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
io_setup(0x3, &(0x7f0000000240)=<r1=>0x0)
io_submit(r1, 0x1, &(0x7f00000001c0)=[&(0x7f0000000000)={0x0, 0x0, 0x0, 0x8, 0x1, r0, 0x0, 0x0, 0x0, 0x0, 0x2}])