pipe2(&(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x4000)
write$binfmt_misc(r1, 0x0, 0x4)
write(r1, &(0x7f0000000180)="bf", 0x1)
readv(r0, &(0x7f0000000100)=[{&(0x7f0000000240)=""/4096, 0x1000}], 0x1)