Patch "crypto: mcryptd - pass through absence of ->setkey()" has been added to the 3.18-stable tree

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

    crypto: mcryptd - pass through absence of ->setkey()

to the 3.18-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-mcryptd-pass-through-absence-of-setkey.patch
and it can be found in the queue-3.18 subdirectory.

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

From: Eric Biggers <[email protected]>
Date: Wed, 3 Jan 2018 11:16:24 -0800
Subject: crypto: mcryptd - pass through absence of ->setkey()

From: Eric Biggers <[email protected]>

commit fa59b92d299f2787e6bae1ff078ee0982e80211f upstream.

When the mcryptd template is used to wrap an unkeyed hash algorithm, don't install a ->setkey() method to the mcryptd instance. This change is necessary for mcryptd to keep working with unkeyed hash algorithms once we start enforcing that ->setkey() is called when present.

---
 crypto/mcryptd.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -514,7 +514,8 @@ static int mcryptd_create_hash(struct cr
 	inst->alg.finup  = mcryptd_hash_finup_enqueue;
 	inst->alg.export = mcryptd_hash_export;
 	inst->alg.import = mcryptd_hash_import;
-	inst->alg.setkey = mcryptd_hash_setkey;
+	if (crypto_hash_alg_has_setkey(halg))
+		inst->alg.setkey = mcryptd_hash_setkey;
 	inst->alg.digest = mcryptd_hash_digest_enqueue;
 
 	err = ahash_register_instance(tmpl, inst);

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

queue-3.18/crypto-cryptd-pass-through-absence-of-setkey.patch queue-3.18/keys-encrypted-fix-buffer-overread-in-valid_master_desc.patch queue-3.18/crypto-hash-introduce-crypto_hash_alg_has_setkey.patch queue-3.18/crypto-mcryptd-pass-through-absence-of-setkey.patch

Nope, this breaks the build, now dropped :(