avoid exponential recursion by checking if already added

Author: SalmonMode

src/_pytest/fixtures.py

@@ -890,7 +890,15 @@ def execute(self, request):
         for argname in self._dependee_fixture_argnames(request):
             fixturedef = request._get_active_fixturedef(argname)
             if argname != "request":
-                fixturedef.addfinalizer(functools.partial(self.finish, request=request))
+                for fin in fixturedef._finalizers:
+                    if "request" in getattr(fin, "keywords", {}):
+                        if self == fin.keywords["request"]._fixturedef:
+                            break
+                else:
+                    fixturedef.addfinalizer(
+                        functools.partial(self.finish, request=request)
+                    )
+
 
         my_cache_key = self.cache_key(request)
         cached_result = getattr(self, "cached_result", None)