The unregister_netdevice message appears after the af-alg stressor starts, so it maybe a crypto algo that is the root cause:
14:34:33 DEBUG| [stdout] af-alg STARTING 14:34:35 DEBUG| [stdout] [ 2895.954700] unregister_netdevice: waiting for lo to become free. Usage count = 1
The unregister_ netdevice message appears after the af-alg stressor starts, so it maybe a crypto algo that is the root cause:
14:34:33 DEBUG| [stdout] af-alg STARTING netdevice: waiting for lo to become free. Usage count = 1
14:34:35 DEBUG| [stdout] [ 2895.954700] unregister_