Patch "crypto: gcm - Filter out async ghash if necessary" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

crypto: gcm - Filter out async ghash if necessary

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
crypto-gcm-filter-out-async-ghash-if-necessary.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Herbert Xu <[email protected]>
Date: Wed, 15 Jun 2016 22:27:05 +0800
Subject: crypto: gcm - Filter out async ghash if necessary

From: Herbert Xu <[email protected]>

commit b30bdfa86431afbafe15284a3ad5ac19b49b88e3 upstream.

As it is if you ask for a sync gcm you may actually end up with an async one because it does not filter out async implementations of ghash.

This patch fixes this by adding the necessary filter when looking for ghash.

---
 crypto/gcm.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -639,7 +639,9 @@ static int crypto_gcm_create_common(stru
 
 	ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type,
 				    CRYPTO_ALG_TYPE_HASH,
-				    CRYPTO_ALG_TYPE_AHASH_MASK);
+				    CRYPTO_ALG_TYPE_AHASH_MASK |
+				    crypto_requires_sync(algt->type,
+							 algt->mask));
 	if (IS_ERR(ghash_alg))
 		return PTR_ERR(ghash_alg);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/crypto-gcm-filter-out-async-ghash-if-necessary.patch queue-4.4/crypto-scatterwalk-fix-test-in-scatterwalk_done.patch