bug#22011: Bug or No?

[hongchao....@amssy.com]

Hi, 

    Recently, i use CentOS release 6.5 Final.    On one client, i logged with 
root user, on another, i logged with custom user. On the former client, i use 
su for changing user to another user(for example userA),     Now, i use w or 
who , the result don't return the userA. why?

    My Linux kernal version is:

                    2.6.32-431.el6.x86_64


hongchao....@amssy.com