Re: [Linux 5.2.x] /sys/kernel/debug/tracing/events/power/cpu_idle/id: BUG: kernel NULL pointer dereference, address: 0000000000000000

[Matthew Garrett]

On Mon, Aug 12, 2019 at 8:29 AM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> From what I understand, Matthew's "lockdown" work is to prevent the
> system from doing anything to see what is happening in the kernel. This
> includes tracefs. This looks like it is working as designed.

Oopsing the kernel isn't working as designed. Ben has a patch to fix this.