3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
commit fc019c7122dfcd69c50142b57a735539aec5da95 upstream.
When performing an asynchronous ablkcipher operation the authenc
completion callback routine is invoked, but it does not locate and use
the proper IV.
The callback routine, crypto_authenc_encrypt_done, is updated to use
the same method of calculating the address of the IV as is done in
crypto_authenc_encrypt function which sets up the callback.
Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
crypto/authenc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -368,9 +368,10 @@ static void crypto_authenc_encrypt_done(
if (!err) {
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc);
- struct ablkcipher_request *abreq = aead_request_ctx(areq);
- u8 *iv = (u8 *)(abreq + 1) +
- crypto_ablkcipher_reqsize(ctx->enc);
+ struct authenc_request_ctx *areq_ctx = aead_request_ctx(areq);
+ struct ablkcipher_request *abreq = (void *)(areq_ctx->tail
+ + ctx->reqoff);
+ u8 *iv = (u8 *)abreq - crypto_ablkcipher_ivsize(ctx->enc);
err = crypto_authenc_genicv(areq, iv, 0);
}
--
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