socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000001000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
sendmsg(r0, &(0x7f0000000480)={0x0, 0x0, &(0x7f00000004c0)=[{&(0x7f0000000000)='\x00', 0x1}], 0x1}, 0x0)
recvfrom(r1, 0x0, 0x0, 0x0, 0x0, 0x0)