linux-kernel - [PATCH] crypto: amlogic

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Date:   Wed, 26 Aug 2020 16:16:57 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     linux-crypto@...r.kernel.org
Cc:     Denis Efremov <efremov@...ux.com>,
        Corentin Labbe <clabbe@...libre.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] crypto: amlogic - use kfree_sensitive()

Use kfree_sensitive() instead of open-coding it.

Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 drivers/crypto/amlogic/amlogic-gxl-cipher.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
index d93210726697..f3dca456d9f8 100644
--- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c
+++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
@@ -341,8 +341,7 @@ void meson_cipher_exit(struct crypto_tfm *tfm)
 	struct meson_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
 
 	if (op->key) {
-		memzero_explicit(op->key, op->keylen);
-		kfree(op->key);
+		kfree_sensitive(op->key);
 	}
 	crypto_free_skcipher(op->fallback_tfm);
 }
@@ -368,8 +367,7 @@ int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
 		return -EINVAL;
 	}
 	if (op->key) {
-		memzero_explicit(op->key, op->keylen);
-		kfree(op->key);
+		kfree_sensitive(op->key);
 	}
 	op->keylen = keylen;
 	op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
-- 
2.26.2