Re: [PATCH v2 2/2] kernel: rerun task_work while freezing in get_signal()

[Oleg Nesterov]

On 07/09, Pavel Begunkov wrote:
>
> --- a/kernel/signal.c
> +++ b/kernel/signal.c
> @@ -2600,6 +2600,14 @@ static void do_freezer_trap(void)
>  	spin_unlock_irq(&current->sighand->siglock);
>  	cgroup_enter_frozen();
>  	schedule();
> +
> +	/*
> +	 * We could've been woken by task_work, run it to clear
> +	 * TIF_NOTIFY_SIGNAL. The caller will retry if necessary.
> +	 */
> +	clear_notify_signal();
> +	if (unlikely(task_work_pending(current)))
> +		task_work_run();
>  }

Acked-by: Oleg Nesterov <oleg@xxxxxxxxxx>