segfault in samba with Active Directory users

[TV]

I'm using Samba (3.6.3-2ubuntu2.3) in Ubuntu 12.04.1 LTS (fresh install).
The server has joinded succesfully the Active Directory Domain.

Samba.conf global,

[global]
   workgroup = XXX
   server string = %h server
   dns proxy = no
   log level = 1
   log file = /var/log/samba/log.%m
   max log size = 1000
   syslog = 0
   panic action = /usr/share/samba/panic-action %d

   security = ADS
   realm = XXX.LOCAL
   password server = svr-dom.xxx.local
   winbind separator = +
   winbind cache time = 300
   winbind use default domain = yes
   winbind refresh tickets = yes
   client use spnego = yes
   winbind use default domain = yes
   domain master = no
   local master = no
   preferred master = no
   winbind enum groups = yes
   winbind enum users = yes
   winbind use default domain = no
   idmap uid = 10000-20000
   idmap gid = 10000-20000
   template shell = /bin/false
   encrypt passwords = true
   passdb backend = tdbsam
   obey pam restrictions = yes
   unix password sync = yes
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
   pam password change = yes
   client lanman auth = yes

A sample share:

[backup]
   comment = backup
   read only = no
   path = /home/backup
   guest ok = no
   browseable = yes
   create mask = 0600
   directory mask = 0700
   valid users = XXX+administrateur,besr

Samba shares with Active Directory users works fine, but i can see in the log files segfault :

http://paste.ubuntu.com/1226116/

I don't have these errors with linux "local" user. For example with user "besr" it's ok.

Let me know if i can more detailed test for this issue. I have the feeling taht this segfault cause perfomance issue, but i'm not sure yet. Still investigating.

[Bryan Quigley (bryanquigley)]

Your pastebin has expired. Could you provide the logs as attachments to the bug report?

[Launchpad Janitor (janitor)]

[Expired for samba (Ubuntu) because there has been no activity for 60 days.]