r0 = memfd_create(&(0x7f0000000340)='\x00', 0x6)
ftruncate(r0, 0x8800000)
preadv(r0, &(0x7f0000000400)=[{&(0x7f0000000080)=""/200, 0xc8}], 0x1, 0xfffff800, 0x0)