r0 = openat$nvram(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
preadv(r0, &(0x7f0000003e80)=[{&(0x7f0000002900)=""/120, 0x78}], 0x1, 0x70a8, 0x0)