On Thu, May 16, 2019 at 03:22:33PM +0000, Roman Gushchin wrote: > On Thu, May 16, 2019 at 12:39:15PM +0200, Jiri Olsa wrote: > > hi, > > Pavel reported an issue with bpf programs (attached to cgroup) > > not being released at the time when the cgroup is removed and > > are still visible in 'bpftool prog' list afterwards. > > Hi Jiri! > > Can you, please, try the patch from > https://github.com/rgushchin/linux/commit/f77afa1952d81a1afa6c4872d342bf6721e148e2 ? > > It should solve the problem, and I'm about to post it upstream. Perfect, I'll give it a try with full libvirt setup as well. Can we have this somehow detectable from user-space so libvirt can decide when to use BPF or not? I would like to avoid using BPF with libvirt if this issue is not fixed and we cannot simply workaround it as systemd automatically removes cgroups for us. Thanks! Pavel