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Date: Mon, 31 Jul 2023 16:52:32 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Joel Fernandes <joel@joelfernandes.org>, paulmck@kernel.org,
	Pavel Machek <pavel@denx.de>,
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	rcu@vger.kernel.org, Ingo Molnar <mingo@kernel.org>
Subject: Re: scheduler problems in -next (was: Re: [PATCH 6.4 000/227]
 6.4.7-rc1 review)
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In-Reply-To: <f5a18aa3-9db7-6ad2-33d5-3335a18e4e2f@roeck-us.net>

On Mon, Jul 31, 2023 at 07:48:19AM -0700, Guenter Roeck wrote:

> > I've taken your config above, and the rootfs.ext2 and run-sh from x86/.
> > I've then modified run-sh to use:
> > 
> >    qemu-system-x86_64 -enable-kvm -cpu host
> > 
> > What I'm seeing is that some boots get stuck at:
> > 
> > [    0.608230] Running RCU-tasks wait API self tests
> > 
> > Is this the right 'problem' ?
> > 
> 
> 
> Yes, exactly.

Excellent! Let me prod that with something sharp, see what comes
creeping out.