mac802154: llsec: use kzfree

This patch will use kzfree instead kfree for security related
information which can be offered by acccident.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c
index 7799d3c..a13d02b 100644 (file)
--- a/net/mac802154/llsec.c
+++ b/net/mac802154/llsec.c
@@ -55,7 +55,7 @@ void mac802154_llsec_destroy(struct mac802154_llsec *sec)
 
                msl = container_of(sl, struct mac802154_llsec_seclevel, level);
                list_del(&sl->list);
-               kfree(msl);
+               kzfree(msl);
        }
 
        list_for_each_entry_safe(dev, dn, &sec->table.devices, list) {
@@ -72,7 +72,7 @@ void mac802154_llsec_destroy(struct mac802154_llsec *sec)
                mkey = container_of(key->key, struct mac802154_llsec_key, key);
                list_del(&key->list);
                llsec_key_put(mkey);
-               kfree(key);
+               kzfree(key);
        }
 }
 
@@ -161,7 +161,7 @@ err_tfm:
                if (key->tfm[i])
                        crypto_free_aead(key->tfm[i]);
 
-       kfree(key);
+       kzfree(key);
        return NULL;
 }
 
@@ -176,7 +176,7 @@ static void llsec_key_release(struct kref *ref)
                crypto_free_aead(key->tfm[i]);
 
        crypto_free_blkcipher(key->tfm0);
-       kfree(key);
+       kzfree(key);
 }
 
 static struct mac802154_llsec_key*
@@ -267,7 +267,7 @@ int mac802154_llsec_key_add(struct mac802154_llsec *sec,
        return 0;
 
 fail:
-       kfree(new);
+       kzfree(new);
        return -ENOMEM;
 }
 
@@ -347,10 +347,10 @@ static void llsec_dev_free(struct mac802154_llsec_device *dev)
                                      devkey);
 
                list_del(&pos->list);
-               kfree(devkey);
+               kzfree(devkey);
        }
 
-       kfree(dev);
+       kzfree(dev);
 }
 
 int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
@@ -681,7 +681,7 @@ llsec_do_encrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
 
        rc = crypto_aead_encrypt(req);
 
-       kfree(req);
+       kzfree(req);
 
        return rc;
 }
@@ -881,7 +881,7 @@ llsec_do_decrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
 
        rc = crypto_aead_decrypt(req);
 
-       kfree(req);
+       kzfree(req);
        skb_trim(skb, skb->len - authlen);
 
        return rc;
@@ -921,7 +921,7 @@ llsec_update_devkey_record(struct mac802154_llsec_device *dev,
                if (!devkey)
                        list_add_rcu(&next->devkey.list, &dev->dev.keys);
                else
-                       kfree(next);
+                       kzfree(next);
 
                spin_unlock_bh(&dev->lock);
        }