---------- Forwarded message ----------
From: Steve French <smfrench@xxxxxxxxx>
Date: Wed, Nov 20, 2013 at 9:01 AM
Subject: Re: Re: Tr:Re: CIFS VFS: Unexpected SMB signature ...NULL
inode in lookup
To: "sergio.conrad" <sergio.conrad@xxxxxxxxxxx>
Looks like 3.10 kernels and later have this. Not sure if others have
backported it earlier.
On Wed, Nov 20, 2013 at 8:21 AM, <sergio.conrad@xxxxxxxxxxx> wrote:
>
> Thanks for your response .
>
> I did my tests with a Centos 2.6.32-358.23.2.el6.i686 up to date, it don't seems to
> backport the update.
>
> Could the latest kernel from a Fedora incorporate the update ? it seems to be 3.11.x
> I will check either if Scientific Linux do this. How could I know before installing ?
>
> Thanks
> Serge
>
>> Message du 20/11/13 15:17
>> De : sergio.conrad@xxxxxxxxxxx
>> A : "Jeff Layton"
>> Copie à :
>> Objet : Re: Tr:Re: CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
>>
>>
>
>
>> Message du 20/11/13 12:33
>> De : "Jeff Layton"
>> A : sergio.conrad@xxxxxxxxxxx
>> Copie à : "linux-cifs vger kernel org"
>> Objet : Re: Tr:Re: CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
>>
>> On Wed, 20 Nov 2013 12:22:08 +0100
>> sergio.conrad@xxxxxxxxxxx wrote:
>>
>> >
>> > I can reproduce the error with this procedure :
>> >
>> >
>> > a script:
>> >
>> > for num in $(seq 1 200)
>> > do
>> > dd if=/dev/zero of=cifsmount/file${num} bs=1024 count=1000
>> > done
>> >
>> >
>> >
>> > Execute the script, and send control-C several time when running
>> >
>> > 50 % chance i got unexpected SMB signature
>> >
>> > any idea ?
>> >
>> >
>>
>> You need a more recent kernel, or a backport of commit
>> ad313cb86dfba27f8f2306da304974ef17c91c56.
>>
>> >
>> > > Message du 20/11/13 08:48
>> > > De : sergio.conrad@xxxxxxxxxxx
>> > > A : linux-cifs@xxxxxxxxxxxxxxx
>> > > Copie à :
>> > > Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
>> > >
>> > >
>> > > Hello
>> > > I have open a bug quite a while ago https://bugzilla.samba.org/show_bug.cgi?id=9477
> and
>> > don't have any news.
>> > > I am using sec=krb5i, but have the same problem with ntlmv2...
>> > >
>> > > The problem is the same with a centos 6 computer.
>> > >
>> > > Perhaps the problem is in the Windows Server ...
>> > > Do I have to change AllowLegacySrvCall as described in
>> > http://support.microsoft.com/kb/957441 ?
>> > > Perhaps I have to put a more recent driver in my server: It is a Dell T610 server
>> > > with a NetExtreme II gigabitE (version 5.2.14 17/12/2009) ?
>> > >
>> > > Please help , as the problems continue ...
>> > > Thanks
>> > > Serge Conrad
>> > >
>> > > Hello ...
>> > > in the messages, you could see an SMB unexpected signature (21 Jan 16:13:16)
>> > > In the dump file , the trame no 470 is at the same time (16:13:16)
>> > >
>> > > The environnement is the same as described in
> https://bugzilla.samba.org/show_bug.cgi?
>> > id=9477
>> > >
>> > > Regards,
>> > >
>> > > Serge
>> > >
>> > > > Message du 25/01/13 16:15
>> > > > De : "Steve French"
>> > > > A : "sergio. conrad"
>> > > > Copie à :
>> > > > Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
>> > > >
>> > > > You could send the trace to me directly
>> > > > On Jan 25, 2013 8:42 AM, "sergio.conrad" wrote:
>> > > >
>> > > > > Hello
>> > > > > I do have a network trace for
>> > > > > https://bugzilla.samba.org/show_bug.cgi?id=9477
>> > > > > But there is the public adress ip of the server in the trace. I don't know
>> > > > > how to hide
>> > > > > this. Could I send the trace to you, or must I find a way to hide the
>> > > > > trace ?
>> > > > >
>> > > > > Thanks
>> > > > > Serge
>> > > > >
>> > > > > > Message du 05/12/12 16:18
>> > > > > > De : "Steve French"
>> > > > > > A : "sergio.conrad"
>> > > > > > Copie à : linux-cifs@xxxxxxxxxxxxxxx
>> > > > > > Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
>> > > > > >
>> > > > > > Could you open a bugzilla bug at bugzilla.samba.org and if possible
>> > > > > > attach a network trace around the time that this is triggered (if it
>> > > > > > is trivial to reproduce)
>> > > > > > https://wiki.samba.org/index.php/Capture_Packets
>> > > > > >
>> > > > > > On Wed, Dec 5, 2012 at 8:43 AM, sergio.conrad wrote:
>> > > > > > > Hello,
>> > > > > > >
>> > > > > > > The log are from 2.6.43.8-1.fc15.x86_64.
>> > > > > > > I see also the error CIFS VFS: Unexpected SMB signature with the same
>> > > > > environnement
>> > > > > on a 3.6.6-1.fc16.x86_64
>> > > > > > >
>> > > > > > > Thanks,
>> > > > > > >
>> > > > > > > Serge
>> > > > > > >
>> > > > > > >
>> > > > > > >> Message du 04/12/12 20:06
>> > > > > > >> De : "Steve French"
>> > > > > > >> A : "sergio.conrad"
>> > > > > > >> Copie à : linux-cifs@xxxxxxxxxxxxxxx
>> > > > > > >> Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
>> > > > > > >>
>> > > > > > >> What kernel version?
>> > > > > > >>
>> > > > > > >> I would not expect the "noserverino" mount option to be a factor.
>> > > > > > >> Jeff did fix one warning relating to unexpected signatures in this
>> > > > > > >> patch, see below (which I don't think is your issue (if the signature
>> > > > > > >> is coming on a transact2 request).
>> > > > > > >>
>> > > > > > >> commit 9c4843ea576107a3c1fb94f2f758f198e9fe9e54
>> > > > > > >> Author: Jeff Layton
>> > > > > > >> Date: Mon Jun 6 15:40:23 2011 -0400
>> > > > > > >>
>> > > > > > >> cifs: silence printk when establishing first session on socket
>> > > > > > >>
>> > > > > > >> When signing is enabled, the first session that's established on a
>> > > > > > >> socket will cause a printk like this to pop:
>> > > > > > >>
>> > > > > > >> CIFS VFS: Unexpected SMB signature
>> > > > > > >>
>> > > > > > >> This is because the key exchange hasn't happened yet, so the signature
>> > > > > > >> field is bogus. Don't try to check the signature on the socket until
>> > > > > the
>> > > > > > >> first session has been established. Also, eliminate the specific check
>> > > > > > >> for SMB_COM_NEGOTIATE since this check covers that case too.
>> > > > > > >>
>> > > > > > >>
>> > > > > > >> On Tue, Dec 4, 2012 at 7:23 AM, sergio.conrad wrote:
>> > > > > > >> > Hi,
>> > > > > > >> >
>> > > > > > >> > I have a problem with users losing their connections from linux
>> > > > > clients with cifs
>> > > > > share. (Windows 2008) :CIFS VFS: Unexpected SMB signature
>> > > > > > >> > I am using two methods for mounting: pam_mount and autofs, both
>> > > > > with same results.
>> > > > > > >> >
>> > > > > > >> > I am using mount options nounix,noserverino
>> > > > > > >> >
>> > > > > > >> > I am lauching cifs module on boot (rc.local) with
>> > > > > > >> > modprobe cifs
>> > > > > > >> > echo 0 > /proc/fs/cifs/OplockEnabled
>> > > > > > >> > echo 1 > /proc/fs/cifs/MultiuserMount
>> > > > > > >> > echo 7 > /proc/fs/cifs/cifsFYI
>> > > > > > >> >
>> > > > > > >> > What happens :
>> > > > > > >> > in /var/log/messages
>> > > > > > >> > =====================
>> > > > > > >> > Dec 3 17:31:01 u1205-08l kernel: [ 3732.140040] CIFS VFS:
>> > > > > Unexpected lookup error
>> > > > > -512
>> > > > > > >> > Dec 3 17:31:01 u1205-08l kernel: [ 3732.334939] CIFS VFS:
>> > > > > Unexpected SMB signature
>> > > > > > >> >
>> > > > > > >> > This user was working since one hour with no problem :
>> > > > > > >> > Daemon log :
>> > > > > > >> > =============
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: key description:
>> > > > > cifs.spnego;0;0;3f000000
>> > > > > > >> >
>> > > > >
>> > > > >
> ;ver=0x2;host=figue;ip4=130.xxx.xxx.xxx;sec=krb5;uid=0x1000005;creduid=0x1000005;us
>> > > > > > >> > er=21206xxx;pid=0x65f
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: ver=2
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: host=figue
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: ip=130.120.8.11
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: sec=1
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: uid=16777221
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: creduid=16777221
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: user=21206xxx
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: pid=1631
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: find_krb5_cc: considering
>> > > > > /tmp/krb5cc_167
>> > > > > > >> > 77221
>> > > > > > >> > Dec 3 16:29:35 u1205-08l cifs.upcall: find_krb5_cc:
>> > > > > FILE:/tmp/krb5cc_16777221 i
>> > > > > > >> > s valid ccache
>> > > > > > >> >
>> > > > > > >> > in dmesg
>> > > > > > >> > =========
>> > > > > > >> > fs/cifs/inode.c: Getting info on \21206xxx\TP9
>> > > > > > >> > [ 3735.419612] fs/cifs/transport.c: For smb_command 50
>> > > > > > >> > [ 3735.419615] fs/cifs/transport.c: Sending smb: total_len 104
>> > > > > > >> > [ 3735.420257] fs/cifs/connect.c: RFC1002 header 0x23
>> > > > > > >> > [ 3735.420261] fs/cifs/connect.c: invalid transact2 word count
>> > > > > > >> > [ 3735.422403] fs/cifs/transport.c: cifs_sync_mid_result: cmd=50
>> > > > > mid=37012 state=4
>> > > > > > >> > [ 3735.422406] CIFS VFS: Unexpected SMB signature
>> > > > > > >> > [ 3735.422408] Status code returned 0xc0000022
>> > > > > NT_STATUS_ACCESS_DENIED
>> > > > > > >> > [ 3735.422411] fs/cifs/netmisc.c: Mapping smb error code 0xc0000022
>> > > > > to POSIX err
>> > > > > -13
>> > > > > > >> > [ 3735.422413] fs/cifs/cifssmb.c: Send error in QPathInfo = -13
>> > > > > > >> > [ 3735.422415] fs/cifs/dir.c: CIFS VFS: leaving cifs_lookup (xid =
>> > > > > 76854) rc = -13
>> > > > > > >> > [ 3735.422424] fs/cifs/dir.c: CIFS VFS: in cifs_lookup as Xid:
>> > > > > 76855 with uid:
>> > > > > 16777221
>> > > > > > >> > [ 3735.422427] fs/cifs/dir.c: parent inode = 0xf14481f0 name is:
>> > > > > TP9 and dentry =
>> > > > > 0xf074e300
>> > > > > > >> > [ 3735.422429] fs/cifs/dir.c: NULL inode in lookup
>> > > > > > >> > [ 3735.422430] fs/cifs/dir.c: Full path: \21206xxx\TP9 inode = 0x
>> > > > > (null)
>> > > > > > >> >
>> > > > > > >> > I don't understand what happens...
>> > > > > > >> > NULL inode in lookup ... What about noserverino option ?
>> > > > > > >> > Perhaps an unresponsive server... The network infrastructure is
>> > > > > old. Last year I
>> > > > > got this working very well, but the server was in a better place (switch
>> > > > > and network
>> > > > > infrastructure speaking)
>> > > > > > >> >
>> > > > > > >> > Regards,
>> > > > > > >> > Thanks in advance
>> > > > > > >> > Serge Conrad
>> > > > > > >> >
>> > > > > > >> > Une messagerie gratuite, garantie à vie et des services en plus, ça
>> > > > > vous tente ?
>> > > > > > >> > Je crée ma boîte mail www.laposte.net
>> > > > > > >> > --
>> > > > > > >> > To unsubscribe from this list: send the line "unsubscribe
>> > > > > linux-cifs" in
>> > > > > > >> > the body of a message to majordomo@xxxxxxxxxxxxxxx
>> > > > > > >> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>> > > > > > >>
>> > > > > > >>
>> > > > > > >>
>> > > > > > >> --
>> > > > > > >> Thanks,
>> > > > > > >>
>> > > > > > >> Steve
>> > > > > > >> --
>> > > > > > >> To unsubscribe from this list: send the line "unsubscribe linux-cifs"
>> > > > > in
>> > > > > > >> the body of a message to majordomo@xxxxxxxxxxxxxxx
>> > > > > > >> More majordomo info at http://vger.kernel.org/majordomo-info.html
>> > > > > > >>
>> > > > > > >
>> > > > > > > Une messagerie gratuite, garantie à vie et des services en plus, ça
>> > > > > vous tente ?
>> > > > > > > Je crée ma boîte mail www.laposte.net
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > > --
>> > > > > > Thanks,
>> > > > > >
>> > > > > > Steve
>> > > > > > --
>> > > > > > To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
>> > > > > > the body of a message to majordomo@xxxxxxxxxxxxxxx
>> > > > > > More majordomo info at http://vger.kernel.org/majordomo-info.html
>> > > > > >
>> > > > >
>> > > > > Une messagerie gratuite, garantie à vie et des services en plus, ça vous
>> > > > > tente ?
>> > > > > Je crée ma boîte mail www.laposte.net
>> > > > >
>> > > >
>> > >
>> > > Une messagerie gratuite, garantie à vie et des services en plus, ça vous tente ?
>> > > Je crée ma boîte mail www.laposte.net
>> > > --
>> > > To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
>> > > the body of a message to majordomo@xxxxxxxxxxxxxxx
>> > > More majordomo info at http://vger.kernel.org/majordomo-info.html
>> > >
>> >
>> >
>> >
>> > >
>> > >
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
>> > the body of a message to majordomo@xxxxxxxxxxxxxxx
>> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>>
>> --
>> Jeff Layton
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
>> the body of a message to majordomo@xxxxxxxxxxxxxxx
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>
>
>
>
>
>
>
>>
>>
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--
Thanks,
Steve
--
Thanks,
Steve
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