[Bug 667269] [NEW] winbind crashes

[gmoore777]

Public bug reported:

Binary package hint: samba

Occasionally on various Ubuntu 64-bit LucidLynx systems (10.04.1), winbind goes into a state such that logging in fails.
(we use ActiveDirectory for logging in. We do not use the Likewise-open product.)
Although, it appears that there are 1 or more winbindd processes running, they are all dead/not_working/hung, etc.
The only recourse to fix the problem, is that I log in with a local account that has sudo privilege, find and kill all the
winbindd processes, and restart, nmbd, winbindd and samba. (not sure if I need to restart nmbd and samba, but
I do it anyways.)

This problem seems to happen more often on systems that are shared with other users.
Some of those other users are connected from across the Wan via ssh.
The problem seems to occur more often over the weekend. Meaning, Monday morning,
is when we discover the machines are un-loginable with Active Directory account names.

This problem does not happen with all 80+ machines. All machines are built out the same, 
and are on approximately the same type of hardware. 

This problem has existed since the onset of LucidLynx from what I can remember.
The problem occurs frequently enough, that I had to set up a self-help web page for users with the 
problem. From there I have a script that will log into the machine in question, 
with a local sudo privileged account, kills all the winbind processes and restarts 
nmbd, winbindd and samba.
Even with using the local account, each command takes about 2 1/2 minutes to complete.
It takes about 12 minutes to accomplish the "fixing" of the machine due to the # of commands that
need to be run.

I am assuming the core file under /var/log/samba/cores/winbindd/core
will be relevant to the problem I am having.

$ lsb_release -rd
Description:    Ubuntu 10.04.1 LTS
Release:        10.04


$ apt-cache policy winbind
winbind:
  Installed: 2:3.4.7~dfsg-1ubuntu3.2
  Candidate: 2:3.4.7~dfsg-1ubuntu3.2
  Version table:
 *** 2:3.4.7~dfsg-1ubuntu3.2 0
        500 http://us.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
        500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
        100 /var/lib/dpkg/status
     2:3.4.7~dfsg-1ubuntu3 0
        500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New

-- 
winbind crashes
https://bugs.launchpad.net/bugs/667269
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