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crypto: ccree - fix backlog notifications

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We were doing backlog notification callbacks via a cipher/hash/aead
request structure cast to the base structure, which may or may not
work based on how the structure is laid in memory and is not safe.

Fix it by delegating the backlog notification to the appropriate
internal callbacks which are type aware.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef
2019-04-18 16:38:46 +03:00
committed by Herbert Xu
parent dcf6285d18
commit a108f9311c
4 changed files with 39 additions and 14 deletions
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10
drivers/crypto/ccree/cc_cipher.c
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@@ -818,9 +818,13 @@ static void cc_cipher_complete(struct device *dev, void *cc_req, int err)
struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req);
unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm);
cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
memcpy(req->iv, req_ctx->iv, ivsize);
kzfree(req_ctx->iv);
if (err != -EINPROGRESS) {
/* Not a BACKLOG notification */
cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
memcpy(req->iv, req_ctx->iv, ivsize);
kzfree(req_ctx->iv);
}
skcipher_request_complete(req, err);
}