Subject: Re: mmotm 2022-03-16-17-42 uploaded (uml sub-x86_64, sched/fair, RCU)

From: Andrew Morton <[email-masked]>
Date: Wed, 16 Mar 2022 21:30:11 -0700

On Wed, 16 Mar 2022 21:21:16 -0700 Randy Dunlap <[email-masked]> wrote:

> 
> 
> On 3/16/22 17:43, Andrew Morton wrote:
> > The mm-of-the-moment snapshot 2022-03-16-17-42 has been uploaded to
> > 
> >    https://www.ozlabs.org/~akpm/mmotm/
> > 
> > mmotm-readme.txt says
> > 
> > README for mm-of-the-moment:
> > 
> > https://www.ozlabs.org/~akpm/mmotm/
> > 
> > This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> > more than once a week.
> > 
> > You will need quilt to apply these patches to the latest Linus release (5.x
> > or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
> > https://ozlabs.org/~akpm/mmotm/series
> 
> 
> UML for x86_64, defconfig:
> 
> In file included from ./arch/x86/include/generated/asm/rwonce.h:1:0,
>                  from ../include/linux/compiler.h:248,
>                  from ../include/linux/kernel.h:20,
>                  from ../include/linux/cpumask.h:10,
>                  from ../include/linux/energy_model.h:4,
>                  from ../kernel/sched/fair.c:23:
> ../include/linux/psi.h: In function ‘cgroup_move_task’:
> ../include/linux/rcupdate.h:414:36: error: dereferencing pointer to incomplete type ‘struct css_set’
>  #define RCU_INITIALIZER(v) (typeof(*(v)) __force __rcu *)(v)
>                                     ^~~~

Works For Me.  I tried `make x86_64_defconfig' and `make i386_defconfig' too.

Can you please share that .config, or debug a bit?