samba - Sep 2021 - pdbedit dump core

Hello Samba users,

Environment: Ubuntu 20.04 up to date
Linux users: 3500 logins

For 1 user, says cpier:
# samba-tool user show cpier : seems OK
# pdbedit -L -w | grep cpier: seems OK
# smbpasswd cpier : works
# samba-tool dbcheck : is OK
# pdbedit -i smbpasswd:FILE : worked for 2306 entries on 3500,
  and failed.
  
One experiment:
# cat s
cpier:34164:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:31D6CFE0D16...
# pdbedit -i smbpasswd:s
Segmentation fault (core dumped)

syslog then tells:
  kernel: [ 1580.615611] pdbedit[1311]: segfault at 0 ip 00007f6dd3d2ae34 s...
error 4 in libsamba-passdb.so.0.28.0[
  kernel: [ 1580.615617] Code: fd 53 48 8b bf 10 02 00 00 e8 58 75 ff ff 4c ...

Why? Is there a way to fix?
My purpose is to transfer an smbpasswd file from one computer
to another. I don't have user passwords to use smbpasswd!

Thanks.

--
Jacques Beigbeder                    |   Jacques.Beigbeder at ens.fr
Service de Prestations Informatiques |      http://www.spi.ens.fr
Ecole normale sup?rieure             | Tel : (+33 1)1 44 32 37 96
45 rue d'Ulm                         |
F75230 Paris cedex 05                |

On Wed, 2021-09-22 at 08:32 +0200, Jacques Beigbeder via samba
wrote:
> Hello Samba users,
> 
> Environment: Ubuntu 20.04 up to date
> Linux users: 3500 logins
> 
> For 1 user, says cpier:
> # samba-tool user show cpier : seems OK
> # pdbedit -L -w | grep cpier: seems OK
> # smbpasswd cpier : works
> # samba-tool dbcheck : is OK
> # pdbedit -i smbpasswd:FILE : worked for 2306 entries on 3500,
>   and failed.
>   
> One experiment:
> # cat s
> cpier:34164:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:31D6CFE0D16...
> # pdbedit -i smbpasswd:s
> Segmentation fault (core dumped)
> 
> syslog then tells:
>   kernel: [ 1580.615611] pdbedit[1311]: segfault at 0 ip
> 00007f6dd3d2ae34 s... error 4 in libsamba-passdb.so.0.28.0[
>   kernel: [ 1580.615617] Code: fd 53 48 8b bf 10 02 00 00 e8 58 75 ff
> ff 4c ...
> 
> Why? Is there a way to fix?
> My purpose is to transfer an smbpasswd file from one computer
> to another. I don't have user passwords to use smbpasswd!
Can you give us more information on how you are running Samba, it
sounds like you are running Samba as a standalone server, but you refer
to samba-tool that only works with AD.

Rowland