Hello.
On Tue, Jul 30, 2024 at 05:42:04PM GMT, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> ...
> Fix this problem by using rcu_read_lock in proc_cpuset_show().
> As cgroup_root is kfree_rcu after commit d23b5c577715
> ("cgroup: Make operations on the cgroup root_list RCU safe"),
> css->cgroup won't be freed during the critical section.
> To call cgroup_path_ns_locked, css_set_lock is needed, so it is safe to
> replace task_get_css with task_css.
This backport requires also the mentioned d23b5c577715 to be
effective (I noticed that is missing in 6.6.y at the moment).
Regards,
Michal
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