diff --git a/tornado/httpclient.py b/tornado/httpclient.py
index 3a45ffd04..0a2da5def 100644
--- a/tornado/httpclient.py
+++ b/tornado/httpclient.py
@@ -717,7 +717,6 @@ def __init__(
         self.code = code
         self.message = message or httputil.responses.get(code, "Unknown")
         self.response = response
-        super().__init__(code, message, response)
 
     def __str__(self) -> str:
         return "HTTP %d: %s" % (self.code, self.message)
diff --git a/tornado/web.py b/tornado/web.py
index 289c67384..8c5ca35ff 100644
--- a/tornado/web.py
+++ b/tornado/web.py
@@ -2520,7 +2520,7 @@ def __init__(
     ) -> None:
         self.status_code = status_code
         self._log_message = log_message
-        self.args = args
+        self.log_args = args
         self.reason = kwargs.get("reason", None)
 
     @property
@@ -2528,13 +2528,13 @@ def log_message(self) -> Optional[str]:
         """
         A backwards compatible way of accessing log_message.
         """
-        if self._log_message and not self.args:
+        if self._log_message and not self.log_args:
             return self._log_message.replace("%", "%%")
         return self._log_message
 
     def get_message(self) -> Optional[str]:
-        if self._log_message and self.args:
-            return self._log_message % self.args
+        if self._log_message and self.log_args:
+            return self._log_message % self.log_args
         return self._log_message
 
     def __str__(self) -> str: