Re: [PATCH v3 cgroup/for-7.0-fixes] cgroup: Fix cgroup_drain_dying() testing the wrong condition

[Tejun Heo]

On Thu, Mar 26, 2026 at 08:35:11AM +0100, Sebastian Andrzej Siewior wrote:
> @@ -7141,7 +7143,7 @@ void cgroup_task_dead(struct task_struct *task)
>  {
>  	get_task_struct(task);
>  	llist_add(&task->cg_dead_lnode, this_cpu_ptr(&cgrp_dead_tasks));
> -	irq_work_queue(this_cpu_ptr(&cgrp_dead_tasks_iwork));
> +	schedule_delayed_work(this_cpu_ptr(&cgrp_delayed_tasks_iwork), HZ);

Can you try schedule_delayed_work_on(smp_processor_id(), ...)?
schedule_delayed_work() is using a percpu workqueue but the delay timer can
still migrate.

Thanks.

-- 
tejun