SubMaster: ensure msg is always a reader (commaai#557)

* SubMaster: ensure msg is always a reader * fix
Edison-CBS · Dec 2, 2023 · 60d1ee0 · 60d1ee0
1 parent 65b34b4
commit 60d1ee0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/messaging/__init__.py b/messaging/__init__.py
@@ -187,7 +187,7 @@ def __init__(self, services: List[str], poll: Optional[List[str]] = None,
       except capnp.lib.capnp.KjException:  # pylint: disable=c-extension-no-member
         data = new_message(s, 0) # lists
 
-      self.data[s] = getattr(data, s)
+      self.data[s] = getattr(data.as_reader(), s)
       self.logMonoTime[s] = 0
       self.valid[s] = data.valid