Re: scheduler problems in -next (was: Re: [PATCH 6.4 000/227] 6.4.7-rc1 review)

From: Peter Zijlstra
Date: Mon Jul 31 2023 - 10:53:08 EST


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.