diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c
index 40018a7..bc7b1b4 100644
--- a/drivers/char/tpm/tpm_ppi.c
+++ b/drivers/char/tpm/tpm_ppi.c
@@ -380,7 +380,7 @@ void tpm_add_ppi(struct tpm_chip *chip)
 				      TPM_PPI_FN_VERSION,
 				      NULL, ACPI_TYPE_STRING);
 	if (obj) {
-		strlcpy(chip->ppi_version, obj->string.pointer,
+		strscpy(chip->ppi_version, obj->string.pointer,
 			sizeof(chip->ppi_version));
 		ACPI_FREE(obj);
 	}
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 5e6a907..4448758 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -79,7 +79,7 @@ static void keyring_revoke(struct key *keyring);
 static void keyring_destroy(struct key *keyring);
 static void keyring_describe(const struct key *keyring, struct seq_file *m);
 static long keyring_read(const struct key *keyring,
-			 char __user *buffer, size_t buflen);
+			 char *buffer, size_t buflen);
 
 struct key_type key_type_keyring = {
 	.name		= "keyring",
diff --git a/tools/testing/selftests/tpm2/tpm2.py b/tools/testing/selftests/tpm2/tpm2.py
index 057a4f4..c7363c6 100644
--- a/tools/testing/selftests/tpm2/tpm2.py
+++ b/tools/testing/selftests/tpm2/tpm2.py
@@ -371,6 +371,10 @@ class Client:
             fcntl.fcntl(self.tpm, fcntl.F_SETFL, flags)
             self.tpm_poll = select.poll()
 
+    def __del__(self):
+        if self.tpm:
+            self.tpm.close()
+
     def close(self):
         self.tpm.close()