socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000900)={<r0=>0xffffffffffffffff})
sendmsg(r0, &(0x7f0000000cc0)={0x0, 0x0, &(0x7f0000000b80)=[{0x0}, {&(0x7f0000000ac0)="9b", 0x1}], 0x2}, 0x0)