--- zzzz-none-000/linux-4.4.60/crypto/hmac.c	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/crypto/hmac.c	2021-02-04 17:41:59.000000000 +0000
@@ -194,11 +194,15 @@
 	salg = shash_attr_alg(tb[1], 0, 0);
 	if (IS_ERR(salg))
 		return PTR_ERR(salg);
+	alg = &salg->base;
 
+	/* The underlying hash algorithm must be unkeyed */
 	err = -EINVAL;
+	if (crypto_shash_alg_has_setkey(salg))
+		goto out_put_alg;
+
 	ds = salg->digestsize;
 	ss = salg->statesize;
-	alg = &salg->base;
 	if (ds > alg->cra_blocksize ||
 	    ss < alg->cra_blocksize)
 		goto out_put_alg;