Re: [PATCH 2/2] mm/madvise: add process_madvise MADV_DONTNEER support

[Oleg Nesterov]

On 11/23, Suren Baghdasaryan wrote:
>
> +     if (madvise_destructive(behavior)) {
> +             /* Allow destructive madvise only on a dying processes */
> +             if (!signal_group_exit(task->signal)) {

signal_group_exit(task) is true if this task execs and kills other threads,
see the comment above this helper.

I think you need !(task->signal->flags & SIGNAL_GROUP_EXIT).

Oleg.