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Thread: Unexpected SMB signature closes server connection, only with kernel 2.6.39-30-desktop!

  1. #1

    Default Unexpected SMB signature closes server connection, only with kernel 2.6.39-30-desktop!

    I used to sync my local directories via smb4k plus synkron to the server. It works like a charm including kernel 2.6.38.

    BUT with 2.6.39 it doesn't. /var/log/messages says:

    Code:
    May 25 18:37:01 linux-yg22 sudo:       AW : TTY=unknown ; PWD=/etc/samba ; USER=root ; COMMAND=/usr/bin/smb4k_mount -s -t cifs -o uid=1002,gid=100,port=445,rw,file_mode=0755,dir_mode=0755,perm,setuids,noserverino,nomapchars,domain=KANZLEI,ip=192.168.0.250,user=aw -- //SERVER/KANZLEI /home/AW/smb4k/SERVER/KANZLEI
    May 25 18:37:01 linux-yg22 kernel: [  436.491475] CIFS VFS: default security mechanism requested.  The default security mechanism will be upgraded from ntlm to ntlmv2 in kernel release 2.6.41
    May 25 18:37:01 linux-yg22 kernel: [  436.509941] CIFS VFS: Unexpected SMB signature
    May 25 18:37:03 linux-yg22 sudo:       AW : TTY=unknown ; PWD=/etc/samba ; USER=root ; COMMAND=/usr/bin/smb4k_mount -s -t cifs -o uid=1002,gid=100,port=445,rw,file_mode=0755,dir_mode=0755,perm,setuids,noserverino,nomapchars,domain=KANZLEI,ip=192.168.0.250,user=aw -- //SERVER/RA2000 /home/AW/smb4k/SERVER/RA2000
    May 25 18:37:07 linux-yg22 sudo:       AW : TTY=unknown ; PWD=/etc/samba ; USER=root ; COMMAND=/usr/bin/smb4k_mount -s -t cifs -o uid=1002,gid=100,port=445,rw,file_mode=0755,dir_mode=0755,perm,setuids,noserverino,nomapchars,domain=KANZLEI,ip=192.168.0.250,user=aw -- //SERVER/Users /home/AW/smb4k/SERVER/Users
    May 25 18:45:03 linux-yg22 sntp[4817]: Started sntp
    May 25 18:46:13 linux-yg22 kernel: [  989.477066] CIFS VFS: Server SERVER has not responded in 300 seconds. Reconnecting...
    May 25 18:46:13 linux-yg22 kernel: [  989.477163] CIFS VFS: Send error in Close = -11
    May 25 18:46:13 linux-yg22 kernel: [  989.479407] CIFS VFS: Unexpected SMB signature
    May 25 18:48:37 linux-yg22 su: (to root) AW on /dev/pts/2
    May 25 18:51:09 linux-yg22 su: (to root) AW on /dev/pts/5
    May 25 18:51:15 linux-yg22 kernel: [ 1291.161044] CIFS VFS: Server SERVER has not responded in 300 seconds. Reconnecting...
    May 25 18:51:15 linux-yg22 kernel: [ 1291.161173] CIFS VFS: Send error in Close = -11
    May 25 18:51:15 linux-yg22 kernel: [ 1291.163232] CIFS VFS: Unexpected SMB signature
    May 25 18:54:07 linux-yg22 pulseaudio[3554]: ratelimit.c: 7 events suppressed
    May 25 18:54:10 linux-yg22 kernel: [ 1466.234666] CIFS VFS: Send error in Close = -512
    May 25 18:56:17 linux-yg22 kernel: [ 1592.970103] CIFS VFS: Server SERVER has not responded in 300 seconds. Reconnecting...
    May 25 18:56:17 linux-yg22 kernel: [ 1592.972645] CIFS VFS: Unexpected SMB signature
    May 25 19:00:02 linux-yg22 sntp[6156]: Started sntp
    May 25 19:00:16 linux-yg22 smartd[2212]: Device: /dev/sda [SAT], SMART Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 110 to 113
    May 25 19:00:16 linux-yg22 smartd[2212]: Device: /dev/sda [SAT], SMART Usage Attribute: 190 Airflow_Temperature_Cel changed from 58 to 56
    May 25 19:00:16 linux-yg22 smartd[2212]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 42 to 44
    May 25 19:00:16 linux-yg22 smartd[2212]: Device: /dev/sda [SAT], SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 47 to 48
    Any idea, where the bug is? I do not even know, how to file a serious bug report on this, but somewhere there is a bug, because everything works fine with 2.6.38, I tested it a couple of times!

    Regards,
    Alexander

  2. #2
    Join Date
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    Default Re: Unexpected SMB signature closes server connection, only withkernel 2.6.39-30-desktop!

    On 05/25/2011 07:36 PM, cookie170 wrote:
    >
    > I used to sync my local directories via smb4k plus synkron to the
    > server. It works like a charm including kernel 2.6.38.
    >
    > BUT with 2.6.39 it doesn't. /var/log/messages says:


    which version of openSUSE has either of those kernels in its own repos?

    i _think_ the answer is none (since i'm running 11.4 and have 2.6.37),
    which makes .39 software not yet 'released' in an openSUSE and it makes
    you a software tester (thank you--more testers are needed)..

    therefor, you should be asking this not in the networking forum but
    rather in the *special* forum setup for bug finders like yourself:

    http://forums.opensuse.org/english/g...-release-beta/

    or maybe on the Factory Mail List, or IRC (begin here, to find/join
    those: http://en.opensuse.org/openSUSE:Communication_channels

    but, to directly answer your unasked question of how/where to file "a
    serious bug report on this", begin here: http://tinyurl.com/nzhq7j
    [though i think your initial idea to talk about it first is a good
    one...do that in any of the above mentioned avenues..]

    --
    dd CAVEAT: http://is.gd/bpoMD
    [NNTP via openSUSE 11.4 [2.6.37.6-0.5] + KDE 4.6.0 + Thunderbird 3.1.10]
    Dual booting with Sluggish Loser7 on Acer Aspire One D255

  3. #3

    Default Re: Unexpected SMB signature closes server connection, only withkernel 2.6.39-30-desktop!

    I stumbled upon a kernel bug, see

    [2.6.39] CIFS write failures where 2.6.38 works | Linux | Kernel

    Should be solved for 2.6.39.3

    A.

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