[Samba] Error in samba-tool dbcheck

[Bruno Guerreiro]

Hello. 
We're in the process of migrating an old Samba3 domain to Samba4. 
Everything is (seem to be?) going ok in our test migration, but we're finding this issue when running samba-tool dbcheck --cross-ncs 

Checking 15131 objects 
ERROR(<class 'IndexError'>): uncaught exception - index out of range 
File "/usr/local/samba/lib/python3.6/site-packages/samba/netcmd/__init__.py", line 186, in _run 
return self.run(*args, **kwargs) 
File "/usr/local/samba/lib/python3.6/site-packages/samba/netcmd/dbcheck.py", line 170, in run 
controls=controls, attrs=attrs) 
File "/usr/local/samba/lib/python3.6/site-packages/samba/dbchecker.py", line 259, in check_database 
error_count += self.check_object(object.dn, attrs=attrs) 
File "/usr/local/samba/lib/python3.6/site-packages/samba/dbchecker.py", line 2435, in check_object 
elif obj[attrname][0][1] == b'\x00'[0] and obj[attrname][0][2] == b'\x00'[0] and obj[attrname][0][3] == b'\x00'[0] and obj[attrname][0][4] != b'\x00'[0] and obj[attrname][0][5] == b'\x00'[0]: 

We're running Ubuntu 18.04.3 LTS with samba 11.4.6. but this also happens with samba 11.4.0 
Any ideas? Is this normal or should we be looking for more errors? 

BRGDS, 
Bruno Guerreiro 

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