misc/53293: Sticky user on 5.1 (who/su)

[Jimmy Selgen]

>Number:         53293
>Category:       misc
>Synopsis:       Sticky user on 5.1 (who/su)
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jun 13 12:40:19 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator:     Jimmy Selgen
>Release:        FreeBSD 5.1-RELEASE i386
>Organization:
>Environment:
System: FreeBSD some.where.dk 5.1-RELEASE FreeBSD 5.1-RELEASE #16: Tue Jun 10 11:24:37 CEST 2003 root at some.where.dk:/usr/obj/usr/src/sys/KCONF i386


	
>Description:
Hi.
I tried posting this to the freebsd-current list, but so far i've recieved no answers :(

This might be a common error/misconfiguration, but i've been unable to
locate it in the archives..

Using 5.1-RELEASE (upgraded from 5.0 through buildkernel/buildworld to RELENG_5_1).

I'm seeing the following "strangeness"

I login as a normal user, run who .. shows my own username as logged in.
su to another user, logout (back to my own uid), run who, and "su'ed" user
is still listed for my session.

Here's a little "screenshot" (names have been changed to protect the
innocent :* )

-bash-2.05b$ w
11:09PM  up 2 days, 11:27, 2 users, load averages: 1.19, 1.17, 1.16
USER             TTY      FROM              LOGIN@  IDLE WHAT
test1            p0       xxx.xx.x.xxx     11:09PM     - w
-bash-2.05b$ su - test2
Password:
Last login: Thu Mar  6 18:39:11 from something.somewhere.
-su-2.05b$ w
11:09PM  up 2 days, 11:27, 2 users, load averages: 1.24, 1.18, 1.17
USER             TTY      FROM              LOGIN@  IDLE WHAT
test2            p0       -                11:09PM     - w
-su-2.05b$ logout
-bash-2.05b$ w
11:09PM  up 2 days, 11:27, 2 users, load averages: 1.22, 1.18, 1.17
USER             TTY      FROM              LOGIN@  IDLE WHAT
test2            p0       -                11:09PM     - w
-bash-2.05b$ who am i
test2            ttyp0    Jun 12 23:09

----
uname -a gives the following :
FreeBSD some.where.com 5.1-RELEASE FreeBSD 5.1-RELEASE #16: Tue Jun 10
11:24:37 CEST 2003     root at some.where.com:/usr/obj/usr/src/sys/KCONF 
i386

I'm trying to do a build of 5.1-CURRENT to see if that'll solve the problem.
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: