old_vpid         1695 fs/exec.c      	pid_t old_pid, old_vpid;
old_vpid         1701 fs/exec.c      	old_vpid = task_pid_nr_ns(current, task_active_pid_ns(current->parent));
old_vpid         1708 fs/exec.c      		ptrace_event(PTRACE_EVENT_EXEC, old_vpid);