Just after releasing 2.8, some bugs were found (isn't that always the case?). Now we have 2.8.1 stable release: http://trace-cmd.org -- Steve Short log here: Greg Thelen (2): trace-cmd: Always initialize write_record() len trace-cmd: Avoid using uninitialized handle Steven Rostedt (VMware) (1): trace-cmd: Version 2.8.1 Tzvetomir Stoyanov (VMware) (1): trace-cmd: Do not free pages from the lookup table in struct cpu_data in case trace file is loaded.