Commit ed961581 authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Martin Schwidefsky

[S390] prng: fix pointer arithmetic

The git commit c708c57e fixed the
access beyond the end of the stack in prng_seed but the pointer
arithmetic is still incorrect. The calculation has been off by
a factor of 64, now it is only off by a factor of 8. prng_seed
is called with a maximum of 16 for nbytes, small enough that
the incorrect calculation stays insides the limits of the stack.
Place parentheses for correct pointer arithmetic.
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 8e10cd74
...@@ -76,7 +76,7 @@ static void prng_seed(int nbytes) ...@@ -76,7 +76,7 @@ static void prng_seed(int nbytes)
/* Add the entropy */ /* Add the entropy */
while (nbytes >= 8) { while (nbytes >= 8) {
*((__u64 *)parm_block) ^= *((__u64 *)buf+i); *((__u64 *)parm_block) ^= *((__u64 *)(buf+i));
prng_add_entropy(); prng_add_entropy();
i += 8; i += 8;
nbytes -= 8; nbytes -= 8;
......
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