r0 = memfd_create(&(0x7f0000000340)='\xdd', 0x7)
ftruncate(r0, 0x8800000)
preadv(r0, &(0x7f0000000400)=[{&(0x7f0000000000)=""/208, 0xd0}], 0x1, 0x1fffffff, 0x0)