Re: tracefs splats in lockdown=confidentiality mode

From: Matthew Garrett
Date: Mon Dec 02 2019 - 18:32:07 EST


On Fri, Nov 1, 2019 at 2:08 PM dann frazier <dann.frazier@xxxxxxxxxxxxx> wrote:

> [ 1.763630] Lockdown: swapper/0: use of tracefs is restricted; see man kernel_lockdown.7

This is expected.

> [ 2.913934] ------------[ cut here ]------------
> [ 2.918435] Could not register function stat for cpu 0
> [ 2.923717] WARNING: CPU: 1 PID: 1 at kernel/trace/ftrace.c:987 ftrace_init_tracefs_toplevel+0x168/0x1bc

This is not. I'll look into it.