Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
DescriptionMiroslav Vadkerti
2011-05-20 05:45:08 UTC
Description of problem:
I just found an very odd behaviour of lastlog on i386 only (I assume this is the only 32bit arch on EL6 available)
# USER=usr$RANDOM; useradd -u 2147483648 $USER; lastlog -u $USER; userdel -r $USER
Username Port From Latest
usr14511 pts/5 freedom.brq.redh Fri May 20 01:22:59 -0400 2011
# USER=usr$RANDOM; useradd -u 2147483648 $USER; lastlog -u $USER; userdel -r $USER
Username Port From Latest
usr166 pts/5 freedom.brq.redh Fri May 20 01:22:59 -0400 2011
As you can see I create a new user with big UID exactly 2^32-1. THis also happens for example for 3147483648, but NOT for 2147483649 or 2147583648, so this is very odd!
# USER=usr$RANDOM; useradd -u 2147583648 $USER; lastlog -u $USER; userdel -r $USER
Username Port From Latest
usr12004 **Never logged in**
# USER=usr$RANDOM; useradd -u 2247583648 $USER; lastlog -u $USER; userdel -r $USER
Username Port From Latest
usr5606 **Never logged in**
# USER=usr$RANDOM; useradd -u 3247583648 $USER; lastlog -u $USER; userdel -r $USER
Username Port From Latest
usr13946 **Never logged in**
# USER=usr$RANDOM; useradd -u 3147483648 $USER; lastlog -u $USER; userdel -r $USER
Username Port From Latest
usr4586 pts/9 localhost Fri May 20 01:35:13 -0400 2011
Version-Release number of selected component (if applicable):
shadow-utils-4.1.4.2-9.el6
How reproducible:
100%
Steps to Reproduce:
see description
Actual results:
lastlog shows user logged in
Expected results:
lastlog shows userd never logged in
Additional info:
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2011-1650.html