Re: [PATCH v2 1/2] fs/resctrl: Avoid extra call to strlen() in schemata_list_add()

From: Reinette Chatre

Date: Thu Sep 17 2026 - 13:49:14 EST


Hi Boris,

On 9/17/26 8:54 AM, Borislav Petkov wrote:
> On Thu, Sep 03, 2026 at 08:42:47AM -0700, Reinette Chatre wrote:
>> Dear x86 maintainers,
>>
>> Could you please consider both cleanups in this series for inclusion?
>
> I see Sashiko is complaining about two pre-existing issues:
>
> https://sashiko.dev/#/patchset/20260821081128.19242-1-dmantipov%40yandex.ru
>

These same pseudo-locking related issues were reported by Sashiko during a previous
resctrl submission:

https://sashiko.dev/#/patchset/20260515193944.15114-1-tony.luck%40intel.com

There was an effort to address these issues, latest attempt can be seen at:

https://lore.kernel.org/lkml/cover.1779476724.git.reinette.chatre@xxxxxxxxx/

These attempts at fixes just exposed more corner cases related to pseudo-locking, for example:

https://lore.kernel.org/all/e40a924f-5398-43bd-821a-2ff9873c5a4c@xxxxxxxxx/

All of these issues are related to intricate races that could be triggered by user space stress
of the pseudo-locking files that is only possible on very specific ten-year old hardware.
Since such usage is contrary to the pseudo-locking usage model which requires care by default
I decided to drop that work.

Reinette