socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000001000)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
write$nbd(r0, &(0x7f0000000000)=ANY=[], 0xfdef)
ppoll(&(0x7f0000000100)=[{r0}], 0x1, &(0x7f0000000140), 0x0, 0x0)