[Samba] Upgrade 4.9 -> 4.11 oups

[MORILLO Jordi]

Hello !

I decided to upgrade my fileservers from stretch/samba 4.9 to buster/samba 4.11
I just realized that smbd is not working anymore :-/
If someone has an idea It would be amazing... as an idiot, I upgraded my 20 servers.... without snapshot....
Thank you so much

Here's some logs :

root at ef113:~# tail /var/log/samba/log.smbd
   #1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x18) [0x7fa495498a48]
   #2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2d) [0x7fa4958d3cad]
   #3 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x1baa9a) [0x7fa4956e9a9a]
   #4 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base.so.0(+0x1bae13) [0x7fa4956e9e13]
   #5 /usr/lib/x86_64-linux-gnu/samba/libsmbd-shim.so.0(exit_server+0x14) [0x7fa494cd9264]
   #6 /usr/sbin/smbd(main+0x13d2) [0x564221a6d402]
   #7 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7fa49370209b]
   #8 /usr/sbin/smbd(_start+0x2a) [0x564221a6defa]
[2020/03/03 18:10:46.174670,  0] ../../source3/lib/dumpcore.c:315(dump_core)
  dumping core in /var/log/samba/cores/smbd

Here is my config file :
[global]
   workgroup = EDUC-FOR
   security = ADS
   realm = EDUC-FOR.LOCAL
   server role = member server

   bind interfaces only = yes
   interfaces = lo eth0

   # Disable Netbios
   disable netbios = Yes
   smb ports = 445

   dedicated keytab file = /etc/krb5.keytab
   kerberos method = secrets and keytab
   winbind refresh tickets = Yes
   encrypt passwords = yes

   idmap config *:backend = tdb
   idmap config *:range = 70001-80000
   idmap config EDUC-FOR:backend  = rid
   idmap config EDUC-FOR:range  = 10000-70000

   winbind separator = +
   winbind enum users = yes
   winbind enum groups = yes
   winbind use default domain = yes

   domain master = no
   local master = no

   # For ACL support on member file server
   vfs objects = acl_xattr
   map acl inherit = Yes

   # Printing global configuration
   printcap cache time = 60
   printcap name = cups
   rpc_server:spoolss = external
   rpc_daemon:spoolssd = fork
   enumports command = /usr/local/bin/show-ports.sh

   # Disable offline mode on all shares
   csc policy = disable

[Commun]
        path = /home/commun
        read only = no

[users$]
        path = /home/users
        read only = no

[printers]
        path = /var/spool/samba
        comment = All Printers
        printable = yes
        printing = CUPS
        create mask = 0700
        guest ok = yes
        print ok = yes
        browseable = no

[print$]
        comment = Printer Drivers
        path = /var/lib/samba/printing
        writable = yes
        read only = no
        write list = root Administrateur @"Admins du domaine"