samba - Apr 2016 - Samba4 quit working after update

I have multiple Samba server (different customers, separate installations)
and they've all quit working after an apparent automatic update to Ubuntu
14.04 LTS. The symptoms are identical:

   - None of the shares are browsable.
   - Authentication seems to be working, at least on the Kerberos side.
   - When running `smbclient -L localhost -UAdministrator` from the server,
   the following error is generated: "session setup failed:
   NT_STATUS_OBJECT_NAME_NOT_FOUND"
   - `id Administrator` returns the Administrator account and group
   memberships.

I'm at a bit of a lost now as to how to proceed--I've been researching
now
for several hours and haven't made any headway.

Can anyone help with this please?

Thank you,

~ Tom

On 4/19/2016 12:10 PM, Thomas Smith wrote:
> I have multiple Samba server (different customers, separate installations)
> and they've all quit working after an apparent automatic update to
Ubuntu
> 14.04 LTS. The symptoms are identical:
>
>     - None of the shares are browsable.
>     - Authentication seems to be working, at least on the Kerberos side.
>     - When running `smbclient -L localhost -UAdministrator` from the
server,
>     the following error is generated: "session setup failed:
>     NT_STATUS_OBJECT_NAME_NOT_FOUND"
>     - `id Administrator` returns the Administrator account and group
>     memberships.
>
> I'm at a bit of a lost now as to how to proceed--I've been
researching now
> for several hours and haven't made any headway.
>
> Can anyone help with this please?
>
> Thank you,
>
> ~ Tom
Does the samba log itself provide any insight?

-- 
-James

I set the Samba debug level to 4 a bit ago, so the logs are a bit
noisy--before that, there didn't seem to be much log activity when I
produced that error.

So with the debug level at 4, these entries kind of stand out a bit:

[2016/04/19 09:55:27.662721,  2]
../source4/smbd/process_standard.c:123(standard_child_pipe_handler)
  Child 16336 (winbindd) exited with status 1

These entries repeat numerous times:
[2016/04/19 09:55:27.732104,  0]
../lib/util/util_runcmd.c:328(samba_runcmd_io_handler)
  /usr/sbin/samba_dnsupdate: not adding non-broadcast interface as0t15
[2016/04/19 09:55:27.732124,  0]
../lib/util/util_runcmd.c:328(samba_runcmd_io_handler)
  /usr/sbin/samba_dnsupdate: added interface eth0 ip=x.x.x.x
bcast=x.x.x.255 netmask=255.255.255.0
[2016/04/19 09:55:29.533765,  4]
../source4/lib/socket/interface.c:121(add_interface)
  added interface eth0 ip=x.x.x.x bcast=x.x.x.255 netmask=255.255.255.0
[2016/04/19 09:55:31.630708,  3]
../source4/nbt_server/register.c:154(nbtd_register_name_handler)
  Registered SERVER<00> with x.x.x.x on interface x.x.x.255

There are a ton of other entries, mostly from "dns_query.c" but also
from
dreplsrv_*.

Does this help? I can paste all of the log entries surrounding the time
when I get the error, but there are quite a few--thought it might be too
long to post.

On Tue, Apr 19, 2016 at 9:34 AM lingpanda101 at gmail.com <
lingpanda101 at gmail.com> wrote:
> On 4/19/2016 12:10 PM, Thomas Smith wrote:
> > I have multiple Samba server (different customers, separate
> installations)
> > and they've all quit working after an apparent automatic update to
Ubuntu
> > 14.04 LTS. The symptoms are identical:
> >
> >     - None of the shares are browsable.
> >     - Authentication seems to be working, at least on the Kerberos
side.
> >     - When running `smbclient -L localhost -UAdministrator` from the
> server,
> >     the following error is generated: "session setup failed:
> >     NT_STATUS_OBJECT_NAME_NOT_FOUND"
> >     - `id Administrator` returns the Administrator account and group
> >     memberships.
> >
> > I'm at a bit of a lost now as to how to proceed--I've been
researching
> now
> > for several hours and haven't made any headway.
> >
> > Can anyone help with this please?
> >
> > Thank you,
> >
> > ~ Tom
> Does the samba log itself provide any insight?
>
> --
> -James
>
>
> --
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