Code was added with commit 04487f575b6 which passes a radio object to the Interface class constructor and stores it in the Interface object. The radio class also stores each Interface object which creates a circular reference and causes the Radio to stick around long after the tests finishes. I cannot see why the Interface needs to keep track of the Radio object. None of the wpa_supplicant utilities use this so it has been removed. --- tools/test-runner | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/test-runner b/tools/test-runner index 3ae4558c..b4840fa4 100755 --- a/tools/test-runner +++ b/tools/test-runner @@ -246,11 +246,10 @@ class Process: raise Exception("Timed out waiting for socket") class Interface: - def __init__(self, name, config, radio): + def __init__(self, name, config): self.name = name self.ctrl_interface = '/var/run/hostapd/' + name self.config = config - self.radio = radio def __del__(self): Process(['iw', 'dev', self.name, 'del'], True) @@ -276,7 +275,7 @@ class Radio: intf_id += 1 - self.interface = Interface(ifname, config, self) + self.interface = Interface(ifname, config) self.use = use Process(['iw', 'phy', self.name, 'interface', 'add', ifname, -- 2.26.2