Bug 253036

Summary: 32-bit pam_winbind.so incompatible with 64-bit winbindd
Product: [Fedora] Fedora Reporter: Pim Zandbergen <p.zandbergen>
Component: sambaAssignee: Simo Sorce <ssorce>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 7   
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: 3.0.26a-6.fc7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-11-05 10:05:59 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Bug Depends On:    
Bug Blocks: 235703, 338141, 338151    

Description Pim Zandbergen 2007-08-16 13:48:29 EDT
Description of problem:

The 32-bit version of pam_winbind.so, needed for 32-bit pam-compatible
applications does not work on a system running a 64-bit winbind daemon.

Version-Release number of selected component (if applicable):

samba-3.0.25b-2.fc7.x86_64
samba-common-3.0.25b-2.fc7.x86_64
samba-common-3.0.25b-2.fc7.i386


How reproducible:

Setup a 32-bit, pam-compatible application to use pam_winbind.so on an x86_64
system. It will never successfully authenticate.


Steps to Reproduce:
1. Install 64-bit samba and samba-common
2. Setup winbindd to work in a 64-bit environment. Make sure wbinfo works
3. Install a 32-bit pam-aware app. I used VMware-server-1.0.3-44356.i386
4. Install 32-bit samba-common for 32-bit pam_winbind
5. Configure pam for this 32-bit app to use pam_winbind

  
Actual results:

Authentication fails.
Error messages in syslog

Expected results:

Authentication succeeds, where applicable
success messages in syslog

Additional info:

/etc/pam.d/vmware-authd: This works on a 32-bit machine

#%PAM-1.0
auth    sufficient      pam_unix.so shadow nullok
auth    sufficient      pam_winbind.so
auth    required        pam_unix_auth.so shadow nullok
account sufficient      pam_unix.so
account required        pam_unix_acct.so

Error messages in /var/log/messages:

winbindd[19368]: [2007/08/14 17:00:26, 0]
  nsswitch/winbindd.c:request_len_recv(544)
winbindd[19368]:   request_len_recv:
  Invalid request size received: 2084

Reproducing this problem through pam is complex. The same problem can be
recreated, by using the 32-bit version of wbinfo. This program needs to be
extracted from the 32-bit rpm, as installing it will not have the 64-bit version
of wbinfo overwritten. Just type "wbinfo -u" using both 32-bit and 64-bit
versions to see the difference.
Comment 1 Jesse Keating 2007-10-22 14:12:02 EDT
http://koji.fedoraproject.org/koji/buildinfo?buildID=21591 has the fix built
into it.
Comment 2 Fedora Update System 2007-10-24 03:09:46 EDT
samba-3.0.26a-6.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update samba'
Comment 3 Fedora Update System 2007-11-05 10:05:56 EST
samba-3.0.26a-6.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.