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Bug 680261

Summary: after removing packages, files left behind untracked by rpmdb
Product: Red Hat Enterprise Linux 6 Reporter: Don Zickus <dzickus>
Component: rpmAssignee: Panu Matilainen <pmatilai>
Status: CLOSED ERRATA QA Contact: BaseOS QE Security Team <qe-baseos-security>
Severity: high Docs Contact:
Priority: high    
Version: 6.1CC: borgan, emcnabb, mvadkert, pknirsch
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: rpm-4.8.0-16.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-05-19 14:19:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Don Zickus 2011-02-24 20:31:05 UTC 
Description of problem:
When QE started running TPS reports on my package hwloc, they noticed it was not cleaning itself up upon removal.  This was caused by installing both arches, hwloc.ppc64 and hwloc.ppc, then removing them together.


Version-Release number of selected component (if applicable):
rpm.ppc64  4.8.0-14.el6
yum.noarch 3.2.29-5.el6

How reproducible:
always


[root@ibm-js12-03 ~]# yum install -y hwloc.ppc64 hwloc.ppc
Loaded plugins: product-id, subscription-manager
Updating Red Hat repositories.
INFO:rhsm-app.repolib:repos updated: 0
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package hwloc.ppc 0:1.1-0.1.el6 will be installed
---> Package hwloc.ppc64 0:1.1-0.1.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================ Package                                     Arch
Version                                           Repository
Size
================================================================================Installing:
 hwloc                                       ppc
1.1-0.1.el6                                       beaker-Server
1.0 M
 hwloc                                       ppc64
1.1-0.1.el6                                       beaker-Server
1.0 M

Transaction Summary
================================================================================Install       2 Package(s)

Total download size: 2.0 M
Installed size: 4.9 M
Downloading Packages:
(1/2): hwloc-1.1-0.1.el6.ppc.rpm
| 1.0 MB     00:00
(2/2): hwloc-1.1-0.1.el6.ppc64.rpm
| 1.0 MB     00:00
--------------------------------------------------------------------------------Total
12 MB/s | 2.0 MB     00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : hwloc-1.1-0.1.el6.ppc64
1/2
  Installing : hwloc-1.1-0.1.el6.ppc
2/2
duration: 193(ms)
Installed products updated.

Installed:
  hwloc.ppc 0:1.1-0.1.el6
hwloc.ppc64 0:1.1-0.1.el6

Complete!
[root@ibm-js12-03 ~]# rpm -qf /usr/bin/hwloc-bind
hwloc-1.1-0.1.el6.ppc64
hwloc-1.1-0.1.el6.ppc
[root@ibm-js12-03 ~]# file /usr/bin/hwloc-bind
/usr/bin/hwloc-bind: ELF 64-bit MSB executable, 64-bit PowerPC or cisco
7500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux
2.6.18, stripped
[root@ibm-js12-03 ~]# yum erase -y hwloc.ppc64 hwloc.ppc
Loaded plugins: product-id, subscription-manager
Updating Red Hat repositories.
INFO:rhsm-app.repolib:repos updated: 0
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package hwloc.ppc 0:1.1-0.1.el6 will be erased
---> Package hwloc.ppc64 0:1.1-0.1.el6 will be erased
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================ Package                                    Arch
Version                                             Repository
Size
================================================================================Removing:
 hwloc                                      ppc
1.1-0.1.el6                                         @beaker-Server
2.4 M
 hwloc                                      ppc64
1.1-0.1.el6                                         @beaker-Server
2.5 M

Transaction Summary
================================================================================Remove        2 Package(s)

Installed size: 4.9 M
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Erasing    : hwloc-1.1-0.1.el6
1/2
  Erasing    : hwloc-1.1-0.1.el6
2/2
duration: 193(ms)
Installed products updated.

Removed:
  hwloc.ppc 0:1.1-0.1.el6
hwloc.ppc64 0:1.1-0.1.el6

Complete!
[root@ibm-js12-03 ~]# rpm -qf /usr/bin/hwloc-bind
file /usr/bin/hwloc-bind is not owned by any package
[root@ibm-js12-03 ~]# file /usr/bin/hwloc-bind
/usr/bin/hwloc-bind: ELF 64-bit MSB executable, 64-bit PowerPC or cisco
7500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux
2.6.18, stripped
[root@ibm-js12-03 ~]#

I expected the file /usr/bin/hwloc-bind to be removed.
Comment 2 Panu Matilainen 2011-03-07 13:15:41 UTC 
Ack, easily reproduced. There are several, more or less subtle things at play here. Time's getting a bit short for 6.1 but lets see...
Comment 3 Don Zickus 2011-03-07 14:16:13 UTC 
Unfortunately, my package hwloc is being poked for updates on resolving this TPS issue.  So I am raising the priority on this bug.  Sorry for the inconvenience.

Cheers,
Don
Comment 5 Panu Matilainen 2011-03-08 07:25:46 UTC 
Oh, I'm only glad this was found, the file removal logic is flawed and technically this problem exists in every single "multilib aware" rpm version.  Whether it happens depends on the exact packages being removed and their relations, and the issue has been largely masked in older rpm versions due to other flaws.

I'm looking into it, but this is an area where you do NOT want a last-minute rushed-in patch as mistakes here could have far more severe consequences (broken systems, data loss) than a couple of files left behind.
Comment 6 Panu Matilainen 2011-03-08 11:51:54 UTC 
Okay... ACK for fixing the erase ordering for this case in 6.1.

Most of the time package dependencies take care of secondary architecture getting removed first but when such dependencies are not present, such as here, rpm needs to arrange the preferred order by other means. Which in turn gets the files removed without having to mess with the file removal logic.
Comment 8 Panu Matilainen 2011-03-09 06:48:07 UTC 
Fixed in rpm-4.8.0-16.el6
Comment 11 errata-xmlrpc 2011-05-19 14:19:48 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0739.html