Re: [PATCH 6.12.y 0/2] sched/psi: fix race in pressure_write (CVE-2026-52991)

[Sasha Levin]

> BTW, I have an unrelated question. I'd like to backport some stable
> patches to earlier LTS trees (e.g. from 6.18 down to 6.6). For patchsets
> like this one that apply cleanly to multiple versions (6.1, 6.6, and
> 6.12), which of the following is preferred?
>
> (1) A single patchset covering all three trees, with subjects like
> "[PATCH 6.1.y/6.6.y/6.12.y] ..."
>
> (2) Three separate patchsets, one per stable tree.

A single combined patchset is fine when the same patches apply cleanly
to all the target trees - just list the versions in the subject like
you described. Separate per-tree submissions are only needed when the
backports diverge.

On this series: still holding for now - Tejun's fix for the psimon
creation under cgroup_mutex hasn't landed in mainline yet. Once it
does, I'll queue the series for 6.12, 6.6, and 6.1.

-- 
Thanks,
Sasha