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...tem logs and output of dmesg? > > I've managed to run into this article [1] that explains that even if you > have all permissions and no SELinux you can still be blocked by > something called kernel_lockdown and it should appear in dmesg. > > Pavel > > [1] <https://gehrcke.de/2019/09/running-an-ebpf-program-may-require-lifting-the-kernel-lockdown/> Unfortunately, nothing related to kernel lockdowns. My kernel sysrq also doesn't seem to recognize x, and neither dmesg nor system journal indicate the system is even booted with lockdowns. I don't run Secure...

...> > I've managed to run into this article [1] that explains that even if you > > have all permissions and no SELinux you can still be blocked by > > something called kernel_lockdown and it should appear in dmesg. > > > > Pavel > > > > [1] <https://gehrcke.de/2019/09/running-an-ebpf-program-may-require-lifting-the-kernel-lockdown/> > > Unfortunately, nothing related to kernel lockdowns. My kernel sysrq also > doesn't seem to recognize x, and neither dmesg nor system journal > indicate the system is even booted with lockdowns. I d...

...FLoadProg:78 : Can you please check system logs and output of dmesg? I've managed to run into this article [1] that explains that even if you have all permissions and no SELinux you can still be blocked by something called kernel_lockdown and it should appear in dmesg. Pavel [1] <https://gehrcke.de/2019/09/running-an-ebpf-program-may-require-lifting-the-kernel-lockdown/>

Hi all, I've disabled cgroups v1 on my system with the kernel boot option "systemd.unified_cgroup_hierarchy=1". Since doing so, USB hotplugging fails to work, seemingly due to a permissions problem with BPF. Please note that the technique I'm going to describe worked just fine for hotplugging USB devices to running domains until this change. Attaching / detaching USB devices