Discussion:
CIFS VFS: Unexpected SMB signature ...NULL inode in lookup
sergio.conrad-QFKgK+
2013-11-20 07:48:15 UTC
Permalink
Hello
I have open a bug quite a while ago https://bugzilla.samba.org/show_bug=
=2Ecgi?id=3D9477 and don't have any news.=20
I am using sec=3Dkrb5i, 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.m=
icrosoft.com/kb/957441 ?
Perhaps I have to put a more recent driver in my server: It is a Dell T=
610 server
with a NetExtreme II gigabitE (version 5.2.14 17/12/2009) ?

Please help , as the problems continue ...
Thanks=20
Serge Conrad

Hello ...
in the messages, you could see an SMB unexpected signature (21 Jan 16:1=
3:16)
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.or=
g/show_bug.cgi?id=3D9477

Regards,

Serge
Message du 25/01/13 16:15
De : "Steve French"=20
A : "sergio. conrad"=20
Copie =C3=A0 :=20
Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode in looku=
p
You could send the trace to me directly
=20
Hello
I do have a network trace for
https://bugzilla.samba.org/show_bug.cgi?id=3D9477
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 t=
he
trace ?
Thanks
Serge
Message du 05/12/12 16:18
De : "Steve French"
A : "sergio.conrad"
Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode in l=
ookup
Could you open a bugzilla bug at bugzilla.samba.org and if possib=
le
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
Hello,
The log are from 2.6.43.8-1.fc15.x86_64.
I see also the error CIFS VFS: Unexpected SMB signature with th=
e 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"
Objet : Re: CIFS VFS: Unexpected SMB signature ...NULL inode i=
n lookup
What kernel version?
I would not expect the "noserverino" mount option to be a fact=
or.
Jeff did fix one warning relating to unexpected signatures in =
this
patch, see below (which I don't think is your issue (if the si=
gnature
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
CIFS VFS: Unexpected SMB signature
This is because the key exchange hasn't happened yet, so the s=
ignature
field is bogus. Don't try to check the signature on the socket=
until
the
first session has been established. Also, eliminate the specif=
ic check
for SMB_COM_NEGOTIATE since this check covers that case too.
Hi,
I have a problem with users losing their connections from li=
nux
clients with cifs
share. (Windows 2008) :CIFS VFS: Unexpected SMB signature
I am using two methods for mounting: pam_mount and autofs, b=
oth
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
in /var/log/messages
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
Unexpected lookup error
-512
Unexpected SMB signature
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
cifs.spnego;0;0;3f000000
;ver=3D0x2;host=3Dfigue;ip4=3D130.xxx.xxx.xxx;sec=3Dkrb5;uid=3D0x10=
00005;creduid=3D0x1000005;us
er=3D21206xxx;pid=3D0x65f
Dec 3 16:29:35 u1205-08l cifs.upcall: ver=3D2
Dec 3 16:29:35 u1205-08l cifs.upcall: host=3Dfigue
Dec 3 16:29:35 u1205-08l cifs.upcall: ip=3D130.120.8.11
Dec 3 16:29:35 u1205-08l cifs.upcall: sec=3D1
Dec 3 16:29:35 u1205-08l cifs.upcall: uid=3D16777221
Dec 3 16:29:35 u1205-08l cifs.upcall: creduid=3D16777221
Dec 3 16:29:35 u1205-08l cifs.upcall: user=3D21206xxx
Dec 3 16:29:35 u1205-08l cifs.upcall: pid=3D1631
Dec 3 16:29:35 u1205-08l cifs.upcall: find_krb5_cc: consider=
ing
/tmp/krb5cc_167
77221
FILE:/tmp/krb5cc_16777221 i
s valid ccache
in dmesg
=3D=3D=3D=3D=3D=3D=3D=3D=3D
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 1=
04
[ 3735.420257] fs/cifs/connect.c: RFC1002 header 0x23
[ 3735.420261] fs/cifs/connect.c: invalid transact2 word cou=
nt
[ 3735.422403] fs/cifs/transport.c: cifs_sync_mid_result: cm=
d=3D50
mid=3D37012 state=3D4
[ 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 0xc=
0000022
to POSIX err
-13
[ 3735.422413] fs/cifs/cifssmb.c: Send error in QPathInfo =3D=
-13
[ 3735.422415] fs/cifs/dir.c: CIFS VFS: leaving cifs_lookup =
(xid =3D
76854) rc =3D -13
[ 3735.422424] fs/cifs/dir.c: CIFS VFS: in cifs_lookup as Xi=
16777221
[ 3735.422427] fs/cifs/dir.c: parent inode =3D 0xf14481f0 na=
TP9 and dentry =3D
0xf074e300
[ 3735.422429] fs/cifs/dir.c: NULL inode in lookup
[ 3735.422430] fs/cifs/dir.c: Full path: \21206xxx\TP9 inode=
=3D 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 (s=
witch
and network
infrastructure speaking)
Regards,
Thanks in advance
Serge Conrad
Une messagerie gratuite, garantie =C3=A0 vie et des services=
en plus, =C3=A7a
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Thanks,
Steve
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Thanks,
Steve
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tente ?
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=20
Une messagerie gratuite, garantie =C3=A0 vie et des services en plus, =C3=
=A7a vous tente ?
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