The sha512 state size in s390_sha_ctx is out by a factor of 8, fix it so that it stays below HASH_MAX_DESCSIZE. Also fix the state init function which was writing garbage to the state. Luckily this is not actually used for anything other than export. Reported-by: Harald Freudenberger <freude@linux.ibm.com> Fixes: 572b5c4682c7 ("crypto: s390/sha512 - Use API partial block handling") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>