… > +++ b/kernel/cgroup/cpuset.c … > @@ -5051,10 +5052,14 @@ int proc_cpuset_show(struct seq_file *m, struct pid_namespace *ns, > if (!buf) > goto out; > > - css = task_get_css(tsk, cpuset_cgrp_id); > - retval = cgroup_path_ns(css->cgroup, buf, PATH_MAX, > - current->nsproxy->cgroup_ns); > - css_put(css); > + rcu_read_lock(); > + spin_lock_irq(&css_set_lock); > + css = task_css(tsk, cpuset_cgrp_id); > + retval = cgroup_path_ns_locked(css->cgroup, buf, PATH_MAX, > + current->nsproxy->cgroup_ns); > + spin_unlock_irq(&css_set_lock); > + rcu_read_unlock(); … Under which circumstances would you become interested to apply statements like the following? * guard(rcu)(); https://elixir.bootlin.com/linux/v6.10-rc5/source/include/linux/rcupdate.h#L1093 * guard(spinlock_irq)(&css_set_lock); https://elixir.bootlin.com/linux/v6.10-rc5/source/include/linux/spinlock.h#L567 Regards, Markus
