r0 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
preadv2(r0, &(0x7f0000002540)=[{&(0x7f0000001240)=""/142, 0x8e}], 0x1, 0x0, 0x0, 0x10)