r0 = openat$vcsu(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
preadv2(r0, &(0x7f0000000340)=[{&(0x7f0000000480)=""/4096, 0x1000}], 0x1, 0xfffffffc, 0x0, 0x0)