Re: DFS referrals

[Marcus Moeller <marcus.moeller-OI3hZJvNYWs@public.gmane.org>]

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Hi again,

>>>> On Mon, 29 Jul 2013 14:50:03 +0200
>>>> Marcus Moeller <marcus.moeller-OI3hZJvNYWs@public.gmane.org> wrote:
>>>>
>>>>> [  124.607810] fs/cifs/cifssmb.c: negprot rc 0
>>>>> [  124.607814] fs/cifs/connect.c: Security Mode: 0xf Capabilities:
>>>>> 0x8001f3fc TimeAdjust: -7200
>>>>> [  124.607817] fs/cifs/sess.c: sess setup type 4
>>>>> [  124.607826] fs/cifs/cifs_spnego.c: key description =
>>>>> ver=0x2;host=d.ethz.ch;ip4=82.130.70.6;sec=krb5;uid=0xaf05;creduid=0xaf05;user=mam4tst;pid=0x61a
>>>>>
>>>>> [  124.803185] fs/cifs/sess.c: ssetup freeing small buf
>>>>> ffff88022c31a000
>>>>> [  124.803195] CIFS VFS: Send error in SessSetup = -126
>>>>> [  124.803203] fs/cifs/connect.c: CIFS VFS: leaving
>>>>> cifs_get_smb_ses (xid = 5) rc = -126
>>>>> [  124.803212] fs/cifs/fscache.c:
>>>>> cifs_fscache_release_client_cookie:
>>>>> (0xffff88022a1b6000/0xffff88022a6430f0)
>>>>> [  124.803368] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid
>>>>> = 4) rc = -126
>>>>> [  124.803374] CIFS VFS: cifs_mount failed w/return code = -126
>>>>
>>>> The only failure I see is the one above, and that's because it failed
>>>> to upcall for the correct key. Are you sure you have krb5 creds as that
>>>> user?
>>>
>>> Yes, creds are there and it also works when mounting from one of the
>>> servers directly.
>>>
>>> Only mounting using the domainname does not work.
>>>
>>>
>>>>> [  131.324798] fs/cifs/cifssmb.c: negprot rc 0
>>>>> [  131.324804] fs/cifs/connect.c: Security Mode: 0xf Capabilities:
>>>>> 0x8001f3fc TimeAdjust: -7200
>>>>> [  131.324808] fs/cifs/sess.c: sess setup type 4
>>>>> [  131.324821] fs/cifs/cifs_spnego.c: key description =
>>>>> ver=0x2;host=d.ethz.ch;ip4=172.31.65.62;sec=krb5;uid=0xaf05;creduid=0xaf05;user=mam4tst;pid=0x62c
>>>>>
>>>>> [  131.384335] fs/cifs/transport.c: For smb_command 115
>>>>> [  131.384344] fs/cifs/transport.c: Sending smb: smb_len=1666
>>>>> [  131.387043] fs/cifs/connect.c: RFC1002 header 0xf9
>>>>> [  131.387055] fs/cifs/misc.c: checkSMB Length: 0xfd,
>>>>> smb_buf_length: 0xf9
>>>>> [  131.387095] fs/cifs/transport.c: cifs_sync_mid_result: cmd=115
>>>>> mid=2 state=4
>>>>> [  131.387100] fs/cifs/misc.c: Null buffer passed to
>>>>> cifs_small_buf_release
>>>>
>>>> Here' the upcall for a similar set of creds worked fine. The only thing
>>>> that seems to have changed in the key description is the IP address.
>>>>
>>>> Do you have cifs.upcall set up to use the --trust-dns flag? If so, why?
>>>
>>> A relict from the past. I have removed it from the config. Thanks for
>>> pointing out.
>
>
>> Ok. Does removing that make any difference?
>
> Nope, still behaves the same. I should perhaps add that this worked fine
> in the past, so I hoped it might work again with this commit:
>
> http://thread.gmane.org/gmane.linux.kernel.cifs/8197/focus=8232
>
> but it doesn't.

Is there any way to debug this further?

Greets
Marcus



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