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-rw-r--r--net/bluetooth/amp.c25
1 files changed, 16 insertions, 9 deletions
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index 2640d78f30b8..ee016f039100 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -134,6 +134,7 @@ struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
static int hmac_sha256(u8 *key, u8 ksize, char *plaintext, u8 psize, u8 *output)
{
struct crypto_shash *tfm;
+ struct shash_desc *shash;
int ret;
if (!ksize)
@@ -148,18 +149,24 @@ static int hmac_sha256(u8 *key, u8 ksize, char *plaintext, u8 psize, u8 *output)
ret = crypto_shash_setkey(tfm, key, ksize);
if (ret) {
BT_DBG("crypto_ahash_setkey failed: err %d", ret);
- } else {
- char desc[sizeof(struct shash_desc) +
- crypto_shash_descsize(tfm)] CRYPTO_MINALIGN_ATTR;
- struct shash_desc *shash = (struct shash_desc *)desc;
-
- shash->tfm = tfm;
- shash->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+ goto failed;
+ }
- ret = crypto_shash_digest(shash, plaintext, psize,
- output);
+ shash = kzalloc(sizeof(*shash) + crypto_shash_descsize(tfm),
+ GFP_KERNEL);
+ if (!shash) {
+ ret = -ENOMEM;
+ goto failed;
}
+ shash->tfm = tfm;
+ shash->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ ret = crypto_shash_digest(shash, plaintext, psize, output);
+
+ kfree(shash);
+
+failed:
crypto_free_shash(tfm);
return ret;
}