From 52176603795c2ab7e9faf6bb94820da1b726aabd Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 9 Feb 2017 17:18:00 +0000
Subject: KEYS: Use memzero_explicit() for secret data

I don't think GCC has figured out how to optimize the memset() away, but
they might eventually so let's future proof this code a bit.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
---
 security/keys/encrypted-keys/encrypted.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'security/keys')

diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index d7a4969b2dd3..4fb315cddf5b 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -985,7 +985,7 @@ static void encrypted_destroy(struct key *key)
 	if (!epayload)
 		return;
 
-	memset(epayload->decrypted_data, 0, epayload->decrypted_datalen);
+	memzero_explicit(epayload->decrypted_data, epayload->decrypted_datalen);
 	kfree(key->payload.data[0]);
 }
 
-- 
cgit