On Tue, Jun 22, 2021 at 06:30:46PM +0200, Oleksandr Natalenko wrote:
> Hello.
>
> I'd like to nominate d583d360a6 ("psi: Fix psi state corruption when
> schedule() races with cgroup move") for 5.12 stable tree.
>
> Recently, I've hit this:
>
> ```
> kernel: psi: inconsistent task state! task=2667:clementine cpu=21 psi_flags=0
> clear=1 set=0
> ```
>
> and after that PSI IO went crazy high. That seems to match the symptoms
> described in the commit message.
But this says it fixes 4117cebf1a9f ("psi: Optimize task switch inside
shared cgroups") which did not show up until 5.13-rc1, so how are you
hitting this issue?
Did you try this patch on 5.12.y and see that it solved your problem?
thanks,
greg k-h
