r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./file1\x00', 0x882c2, 0x0)
preadv(r0, &(0x7f0000001400)=[{&(0x7f00000002c0)=""/4096, 0x1000}], 0x1, 0x7ff, 0x0)