DTrace Hangout 26 April 2018

gnn@ reports that he now has a version of DTrace from FreeBSD that has been pushed into a branch in the OpenDTrace repo

markj@ is hoping to be working more on DTrace in the very near future and hopes to bring in OpenBSD's BSD licensed ctfconvert. He also wants the CTF code to work in ddb and gnn@ points out that there is some Summer of Code code for this.

domagoj@ has been continuing to work on the VM/hypervisor version. Right now that works because the information in the host and the guest are synchronized. He continues to work on the issues around DTrace and VMs for his graduate work as well as on the CADERTS project. Extended the DTrace instructions that read from memory. There are issues around this because you cannot call malloc() in probe context nor touch the VM system. Notes that there is likely a race condition accessing the page tables, but will look into that next.