From 2e8a15841970fc916c1094e0671408b68269b061 Mon Sep 17 00:00:00 2001
From: Danny <dannyirwin31@yahoo.com>
Date: Mon, 7 Sep 2026 16:55:07 -0700
Subject: [PATCH] Leaky Frame Mems

---
 starpilot/system/speed_limit_vision.py        |  1 +
 .../system/tests/test_speed_limit_vision.py   | 92 +++++++++++++++++++
 2 files changed, 93 insertions(+)

diff --git a/starpilot/system/speed_limit_vision.py b/starpilot/system/speed_limit_vision.py
index 520e4d4118..c92f0b76f6 100644
--- a/starpilot/system/speed_limit_vision.py
+++ b/starpilot/system/speed_limit_vision.py
@@ -2825,6 +2825,7 @@ class SpeedLimitVisionDaemon:
       self._maybe_commit_training_capture(now)
       self._maybe_capture_map_transition_miss(now)
 
+      frame_bgr = None
       ratekeeper.keep_time()
 
 
diff --git a/starpilot/system/tests/test_speed_limit_vision.py b/starpilot/system/tests/test_speed_limit_vision.py
index ae8959e5b6..541e9dbb57 100644
--- a/starpilot/system/tests/test_speed_limit_vision.py
+++ b/starpilot/system/tests/test_speed_limit_vision.py
@@ -1,5 +1,6 @@
 from collections import deque
 import gc
+from types import SimpleNamespace
 import weakref
 
 import numpy as np
@@ -238,6 +239,97 @@ def test_receive_frame_does_not_retain_vision_buffer(monkeypatch):
   assert buffer_refs[0]() is None
 
 
+def test_run_releases_local_frame_after_offroad_cleanup():
+  class StopLoop(Exception):
+    pass
+
+  class FakeSubMaster:
+    def __init__(self):
+      self.updated = {"userBookmark": False, "livePose": False}
+      self.valid = {"starpilotCarState": True}
+      self.states = {
+        "deviceState": SimpleNamespace(started=False),
+        "mapdOut": SimpleNamespace(roadName=""),
+        "livePose": SimpleNamespace(inputsOK=True),
+        "starpilotCarState": SimpleNamespace(isParked=False),
+      }
+      self.update_count = 0
+
+    def update(self, _timeout):
+      self.update_count += 1
+      self.states["deviceState"].started = self.update_count == 1
+
+    def __getitem__(self, key):
+      return self.states[key]
+
+  class FakeRatekeeper:
+    def __init__(self, frame_ref):
+      self.frame_ref = frame_ref
+      self.keep_count = 0
+      self.frame_alive_at_offroad_keep = None
+
+    def keep_time(self):
+      self.keep_count += 1
+      if self.keep_count == 2:
+        self.frame_alive_at_offroad_keep = self.frame_ref() is not None
+        raise StopLoop
+
+  received_frames = [np.ones((2, 2, 3), dtype=np.uint8)]
+  frame_ref = weakref.ref(received_frames[0])
+  ratekeeper = FakeRatekeeper(frame_ref)
+  daemon = SpeedLimitVisionDaemon.__new__(SpeedLimitVisionDaemon)
+  daemon.use_runtime = True
+  daemon.sm = FakeSubMaster()
+  daemon.Ratekeeper = lambda *_args: ratekeeper
+  daemon.net = object()
+  daemon.last_error = ""
+  daemon.started_prev = False
+  daemon.parked_prev = False
+  daemon.last_road_name = ""
+  daemon.last_inference_at = -float("inf")
+  daemon.stream_name = "road camera"
+  daemon.published_speed_limit_mph = 0
+  daemon.published_confidence = 0.0
+  daemon.pending_auto_bookmark = None
+  daemon.memory_pressure_state = "normal"
+  daemon.last_cpu_busy = False
+  daemon.interval_skip_count = 0
+  daemon.busy_skip_count = 0
+  daemon.camera_unavailable_count = 0
+  daemon.empty_frame_count = 0
+  daemon.loop_count = 0
+  daemon.inference_count = 0
+  daemon.detector_inference_count = 0
+  daemon.detection_count = 0
+  daemon.current_frame_bgr = None
+
+  daemon._update_memory_pressure = lambda: None
+  daemon._start_debug_session = lambda: False
+  daemon._publish_runtime_telemetry = lambda *_args, **_kwargs: None
+  daemon._write_debug_event = lambda *_args, **_kwargs: None
+  daemon._close_debug_session = lambda: None
+  daemon._disconnect_camera = lambda: None
+  daemon._connect_camera = lambda: True
+  daemon._update_coexistence_mode = lambda _now: None
+  daemon._inference_interval = lambda _now: 0.0
+  daemon._track_classification_due = lambda _now: False
+  daemon._detector_interval = lambda _interval: 0.0
+  daemon._receive_frame_bgr = lambda: received_frames.pop()
+  daemon._detect_sign = lambda _frame: None
+  daemon._start_latest_detector_track = lambda *_args: None
+  daemon._clear_published_detection_if_stale = lambda *_args: False
+  daemon._publish_status = lambda *_args, **_kwargs: None
+  daemon._maybe_commit_auto_bookmark = lambda _now: None
+  daemon._maybe_commit_training_capture = lambda _now: None
+  daemon._maybe_capture_map_transition_miss = lambda _now: None
+
+  with pytest.raises(StopLoop):
+    daemon.run()
+
+  assert not ratekeeper.frame_alive_at_offroad_keep
+  assert frame_ref() is None
+
+
 def test_publish_status_only_writes_changed_values():
   daemon = SpeedLimitVisionDaemon.__new__(SpeedLimitVisionDaemon)
   daemon.params_memory = MemoryParams()