Re: [PATCH 0/6] A few cpuidle vs rcu fixes

On Wed, Jan 25, 2023 at 10:31:41AM +0100, Peter Zijlstra wrote:

On Tue, Jan 24, 2023 at 04:34:23PM +0000, Mark Rutland wrote:

quoted

Hi Peter,

On Mon, Jan 23, 2023 at 09:50:09PM +0100, Peter Zijlstra wrote:

quoted

0-day robot reported graph-tracing made the cpuidle-vs-rcu rework go splat.

Do you have a link toe the splat somewhere?

I'm assuming that this is partially generic, and I'd like to make sure I test
the right thing on arm64. I'll throw my usual lockdep options at the ftrace
selftests...

0-day triggered this by running tools/testing/selftests/ftrace/ftracetest,
which is what I've been using to reproduce.

If that don't work for you I can try and dig out the 0day email to see
if it has more details on.

I had a go running those on arm64, but got different splats (as per my other
replies), so I just wanted to see the backtraces and/or config to check I
wasn't missing something due to CONFIG_* or arch differences.

If you have the email to hand, that'd be great, but don't worry too much about
it!

Thanks,
Mark.