diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 9155840..a2be6fc 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -681,9 +681,9 @@
 	complete = test_bit(SMP_FLAG_COMPLETE, &smp->flags);
 	mgmt_smp_complete(hcon, complete);
 
-	kfree(smp->csrk);
-	kfree(smp->slave_csrk);
-	kfree(smp->link_key);
+	kzfree(smp->csrk);
+	kzfree(smp->slave_csrk);
+	kzfree(smp->link_key);
 
 	crypto_free_blkcipher(smp->tfm_aes);
 	crypto_free_hash(smp->tfm_cmac);
@@ -717,7 +717,7 @@
 	}
 
 	chan->data = NULL;
-	kfree(smp);
+	kzfree(smp);
 	hci_conn_drop(hcon);
 }
 
@@ -1097,13 +1097,13 @@
 		return;
 
 	if (smp_h6(smp->tfm_cmac, smp->tk, tmp1, smp->link_key)) {
-		kfree(smp->link_key);
+		kzfree(smp->link_key);
 		smp->link_key = NULL;
 		return;
 	}
 
 	if (smp_h6(smp->tfm_cmac, smp->link_key, lebr, smp->link_key)) {
-		kfree(smp->link_key);
+		kzfree(smp->link_key);
 		smp->link_key = NULL;
 		return;
 	}
@@ -1300,7 +1300,7 @@
 	smp->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(smp->tfm_aes)) {
 		BT_ERR("Unable to create ECB crypto context");
-		kfree(smp);
+		kzfree(smp);
 		return NULL;
 	}
 
@@ -1308,7 +1308,7 @@
 	if (IS_ERR(smp->tfm_cmac)) {
 		BT_ERR("Unable to create CMAC crypto context");
 		crypto_free_blkcipher(smp->tfm_aes);
-		kfree(smp);
+		kzfree(smp);
 		return NULL;
 	}