socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000040)={<r0=>0xffffffffffffffff})
io_setup(0x1, &(0x7f0000000080)=<r1=>0x0)
io_submit(r1, 0x1, &(0x7f00000001c0)=[&(0x7f0000000180)={0x0, 0x0, 0x0, 0x1, 0x0, r0, 0x0, 0x0, 0xfffffffeffffffff}])