On 10/04, Luca Boccassi wrote: > > On Fri, 4 Oct 2024 at 20:30, Oleg Nesterov <oleg@xxxxxxxxxx> wrote: > > > > I guess Christian meant you should simply use > > > > info.pid = task_pid_vnr(task); > > > > task_pid_vnr(task) returns the task's pid in the caller's namespace. > > Ah I see, I didn't realize there was a difference, sent v3 with the > suggested change just now, thanks. I didn't get v3, I guess I wasn't cc'ed again. So, just in case, let me add that task_pid_vnr(task) can return 0 if this task exits after get_pid_task(). Perhaps this is fine, I do not know. But perhaps you should actually use pid_vnr(pid). Oleg.