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crypto: api - Include alignment in crypto_alg_extsize

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This patch ensures that the tfm context always has enough extra
memory to ensure that it is aligned according to cra_alignment.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-05-28 22:07:56 +08:00
parent 5c98d62059
commit c2110f2834
1 changed files with 2 additions and 1 deletions
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3
crypto/algapi.c
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@ -980,7 +980,8 @@ EXPORT_SYMBOL_GPL(crypto_xor);
unsigned int crypto_alg_extsize(struct crypto_alg *alg)
{
return alg->cra_ctxsize;
return alg->cra_ctxsize +
(alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1));
}
EXPORT_SYMBOL_GPL(crypto_alg_extsize);