Ticket #17810: 17810-catch-all.patch

django/contrib/sessions/backends/cached_db.py

@@ -24 +24 @@
     def load(self):
         try:
             data = cache.get(self.cache_key, None)
-        except Exception, e:
-            e_type = str(type(e))
-            if e_type != "<class 'memcache.MemcachedKeyLengthError'>":
-                raise e
+        except Exception:
+            # Some backends (e.g. memcache) raise an exception on invalid
+            # cache keys. If this happens, reset the session. See #17810.
             data = None
         if data is None:
             data = super(SessionStore, self).load()

django/contrib/sessions/backends/cache.py

@@ -19 +19 @@
     def load(self):
         try:
             session_data = self._cache.get(self.cache_key, None)
-        except Exception, e:
-            e_type = str(type(e))
-            if e_type != "<class 'memcache.MemcachedKeyLengthError'>":
-                raise e
+        except Exception:
+            # Some backends (e.g. memcache) raise an exception on invalid
+            # cache keys. If this happens, reset the session. See #17810.
             session_data = None
         if session_data is not None:
             return session_data