[Samba] winbind filling up log with "Possible deadlock: Trying to lookup SID xxx with passdb backend"
Andre Fonseca de Oliveira
andre.f.oliveira at cgu.gov.br
Mon Dec 13 03:38:27 MST 2010
Appreciate your reply.
> On 6 December 2010 14:54, Andre Fonseca de Oliveira
> <andre.f.oliveira at cgu.gov.br> wrote:
>> I have samba 3.3.8 installed on CentOS 5.5 on a production server.
>> Winbind is filling up the logs with these messages:
>> [2010/12/06 10:43:28, 0] winbindd/winbindd_passdb.c:sid_to_name(159)
>> Possible deadlock: Trying to lookup SID
>> S-1-5-21-2106371596-187675891-3351287853 with passdb backend
> If you enable debug level 10, do you get this just before each of
> those messages?
> Converting SID S-1-5-21-2106371596-187675891-3351287853
Yes. Here is a snippet:
[2010/12/13 08:28:59, 10]
child_process_request: request fn LOOKUPSID
[2010/12/13 08:28:59, 3]
: lookupsid S-1-5-21-2106371596-187675891-3351287853
[2010/12/13 08:28:59, 10] winbindd/winbindd_passdb.c:sid_to_name(147)
*Converting SID S-1-5-21-2106371596-187675891-3351287853*
[2010/12/13 08:28:59, 0] winbindd/winbindd_passdb.c:sid_to_name(159)
Possible deadlock: Trying to lookup SID
S-1-5-21-2106371596-187675891-3351287853 with passdb backend
>> We have been having problems when activating winbind daemon.
>> Could this error message be causing trouble?
> I don't think so. I'm not sure what would cause this, but the code
> logs that message if the SID is not in the BUILTIN domain and is not
> in your domain and is not a local user/group and is not a well known
> SID (like "Everybody").
> It looks like just a sanity check. I have no idea what it has to do
> with deadlocks, but perhaps someone familiar with the code could
The SID that appears in the logs is the domain SID:
[root at phoenix samba]# net getdomainsid
SID for local machine PHOENIX is: S-1-5-21-2106371596-187675891-3351287853
SID for domain DF-CGU is: S-1-5-21-2106371596-187675891-3351287853
>> Attached is smb.conf globals section (shares removed).
>> Thanks in advance
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