[Samba] 'samba-tool dbcheck' reports only a "Bus error"

[Ole Traupe]

Am 26.10.2015 um 15:01 schrieb mathias dufresne:
> 2015-10-25 16:14 GMT+01:00 Ole Traupe <ole.traupe at tu-berlin.de>:
>
>> For a few days now my primary DC has some issues. I can create users
>> without a problem. But when I try to alter the group membership of users,
>> one of my samba processes crashes (the one listening to the LDAP related
>> ports: 389, 636, 3268, 3269).
>>
>> Also, when I start my backup DC, a few seconds later another process
>> crashes on the primary DC (the RPC related listening to 135 and 1024).
>>
>> I haven't made any updates to OS or Samba (still 4.2.2), but I have
>> adjusted some UIDs and GIDs recently.
>>
> What kind of adjustment did you performed?
> I mean if your issue appeared just after this change, this issue could be
> linked to that change...

I changed uids and gids of domain admins and users (also domain admin 
and user group) to conform to the range settings in my smb.conf files. I 
was building on a test system I installed when I knew little about Samba 
(I know: no good idea). I was expecting possible problems on member 
servers but not on the DCs.

After encountering these problems, I reset the permissions on the PDC's 
sysvol with "samba-tool ntacl sysvolreset".

I am not sure, whether the problems actually started right with these 
modifications.

Could they - in general - lead to such problems on the DC?


>
>
>> Despite "log level = 3", the "log.samba" gives only this,
>>
>> [2015/10/22 19:05:46.500567,  0] ../lib/util/fault.c:78(fault_report)
>>    ===============================================================
>> [2015/10/22 19:05:46.515490,  0] ../lib/util/fault.c:79(fault_report)
>>    INTERNAL ERROR: Signal 7 in pid 3794 (4.2.2)
>>    Please read the Trouble-Shooting section of the Samba HOWTO
>> [2015/10/22 19:05:46.515633,  0] ../lib/util/fault.c:81(fault_report)
>>    ===============================================================
>> [2015/10/22 19:05:46.515732,  0] ../lib/util/fault.c:151(smb_panic_default)
>>    PANIC: internal error
>>
>> while the trouble shooting page directs me to the log files. ;)
>>
>> When I try a 'samba-tool dbcheck' on the PDC, I get the message "Bus
>> error". Nothing more. When I do it on the BDC, the check runs through
>> without errors. The sam.ldb on the BDC is in an earlier state because
>> replication isn't working any more.
>>
>> What does "Bus error" mean? Have I messed up my data base? Or is it
>> something else?
>>
>> What can I do?
>>
>> Ole
>>
>>
>>
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