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crypto: skcipher - Avoid infinite loop when cipher fails selftest

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When an skcipher constructed through crypto_givcipher_default fails
its selftest, we'll loop forever trying to construct new skcipher
objects but failing because it already exists.

The crux of the issue is that once a givcipher fails the selftest,
we'll ignore it on the next run through crypto_skcipher_lookup and
attempt to construct a new givcipher.

We should instead return an error to the caller if we find a
givcipher that has failed the test.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2009-02-18 20:33:55 +08:00
parent 3f683d6175
commit b170a137f4
2 changed files with 20 additions and 1 deletions
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crypto/blkcipher.c
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@@ -521,7 +521,7 @@ static int crypto_grab_nivcipher(struct crypto_skcipher_spawn *spawn,
int err;
type = crypto_skcipher_type(type);
mask = crypto_skcipher_mask(mask) | CRYPTO_ALG_GENIV;
mask = crypto_skcipher_mask(mask)| CRYPTO_ALG_GENIV;
alg = crypto_alg_mod_lookup(name, type, mask);
if (IS_ERR(alg))