dynamo: Don't crash with internal error if getattr on a tensor fails …

…(#144817)

Summary:
This prevents crashes when getattr is called on a tensor for something
which doesn't exist.

X-link: pytorch/pytorch#144817
Approved by: https://github.com/williamwen42, https://github.com/jansel

Reviewed By: kit1980

Differential Revision: D68304676

Pulled By: c00w

fbshipit-source-id: aabd53d950a19e2837ff15e11a39cc1771ac4ec5

userbenchmark/dynamo/dynamobench/_dynamo/utils.py

@@ -3064,10 +3064,16 @@ def run_node(tracer, node, args, kwargs, nnmodule):
         def make_error_message(e):
             return f"Failed running {op} {node.target}(*{args}, **{kwargs}):\n" + str(e)
 
+        from .exc import Unsupported
+
         try:
             if op == "call_function":
                 return node.target(*args, **kwargs)
             elif op == "call_method":
+                if not hasattr(args[0], node.target):
+                    from .exc import unimplemented
+
+                    unimplemented(make_error_message("attribute not defined"))
                 return getattr(args[0], node.target)(*args[1:], **kwargs)
             elif op == "call_module":
                 assert nnmodule is not None
@@ -3083,6 +3089,8 @@ def make_error_message(e):
             from .exc import unimplemented
 
             unimplemented(make_error_message(e), from_exc=e)
+        except Unsupported:
+            raise
         except Exception as e:
             raise RuntimeError(make_error_message(e)).with_traceback(
                 e.__traceback__