(In reply to Tony Jones from comment #2) > Also please always report what version of systemtap you are using stap -V or > rpm -q systemtap. Thanks for the tip. FYI, prior to updating to 4.6 # stap -V Systemtap translator/driver (version 4.2/0.186, non-git sources) Copyright (C) 2005-2019 Red Hat, Inc. and others This is free software; see the source for copying conditions. tested kernel versions: 2.6.32 ... 5.4-rc6 enabled features: AVAHI BPF LIBSQLITE3 NLS NSS