linux-kernel - Re: [PATCH v2 0/9] A few more cpuidle vs rcu fixes

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Message-ID: <20230129232322.GM2948950@paulmck-ThinkPad-P17-Gen-1>
Date:   Sun, 29 Jan 2023 15:23:22 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, will@...nel.org, boqun.feng@...il.com,
        mark.rutland@....com, tglx@...utronix.de, mingo@...hat.com,
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Subject: Re: [PATCH v2 0/9] A few more cpuidle vs rcu fixes

On Thu, Jan 26, 2023 at 04:08:29PM +0100, Peter Zijlstra wrote:
> 0-day robot reported graph-tracing made the cpuidle-vs-rcu rework go splat.
> 
> These patches appear to cure this, the ftrace selftest now runs to completion
> without spamming scary messages to dmesg.
> 
> Since v1:
> 
>  - fixed recursive RCU splats
>  - fixed psci thingies for arm (null)
>  - improved the tracing WARN (rostedt)
>  - fixed TRACE_PREEMPT_TOGGLE (null)
> 
> ---

Applying this gets me the name objtool warnings noted before, but only
on KASAN kernels.  Other than that, works fine as far as rcutorture
is concerned.

							Thanx, Paul