On Sat, Apr 28, 2018 at 2:18 AM Ingo Molnar <mi...@kernel.org> wrote:
> I just tried the MPX testcases with the latest kernel:
> deimos:~/tip/tools/testing/selftests/x86> ./mpx-mini-test_64
They need to be run as root. They try to access
/sys/kernel/debug/tracing/set_ftrace_pid
/sys/kernel/debug/tracing/trace
and that's root-only.
> ... and both of them crashed.
That's just because they use "assert()" to check that the file open worked.
"assert()" is evil and bad bad bad.
Linus
