It looks like this fix is needed for 5.4 (but not any older stable branch): commit 27d461333459d282ffa4a2bdb6b215a59d493a8f Author: Navid Emamdoost <navid.emamdoost@xxxxxxxxx> Date: Wed Sep 25 10:48:30 2019 -0500 i40e: prevent memory leak in i40e_setup_macvlans Ben. -- Ben Hutchings, Software Developer Codethink Ltd https://www.codethink.co.uk/ Dale House, 35 Dale Street Manchester, M1 2HF, United Kingdom