close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2)
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000001000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
write(r0, &(0x7f0000001040)=' ', 0x1)
recvmmsg(r1, 0x0, 0x0, 0x0, 0x0)