diff --git a/userbenchmark/dynamo/dynamobench/_dynamo/utils.py b/userbenchmark/dynamo/dynamobench/_dynamo/utils.py
index aa0719a3ab..ba876a0fbb 100644
--- a/userbenchmark/dynamo/dynamobench/_dynamo/utils.py
+++ b/userbenchmark/dynamo/dynamobench/_dynamo/utils.py
@@ -2295,3 +2295,17 @@ def has_torch_function(vt: "torch._dynamo.variables.base.VariableTracker") -> bo
         isinstance(vt, UserDefinedObjectVariable)
         and hasattr(vt.value, "__torch_function__")
     )
+
+
+# see note [Tensor Fakification and Symbol Caching]
+def to_fake_tensor(t, fake_mode):
+    symbolic_context = None
+    source = None
+    if tracing_context := torch._guards.TracingContext.try_get():
+        if t in tracing_context.tensor_to_context:
+            symbolic_context = tracing_context.tensor_to_context[t]
+            source = symbolic_context.tensor_source
+
+    return fake_mode.from_tensor(
+        t, static_shapes=False, symbolic_context=symbolic_context, source=source
+    )