[Bug 557890] [NEW] transfer lockup connecting to a NetApp/CIFS share

[Kristian Rink]

Public bug reported:

Binary package hint: samba

Mounting a CIFS share off an IBM N3300 filer (== NetApp FAS 2020), I
experienced some file managers, applications, ... to more or less
regularly lock up / don't do anything while trying to browse folders.
Looking more into this, it seems the problem is more basic. The thing is
mounted using cifs:

//192.168.1.252/data on /opt/filer type cifs (rw,mand)

Looking at dmesg, these errors do appear more or less frequently when
trying to read off the filer:

[ 3757.049058]  CIFS VFS: No response for cmd 50 mid 11642
[ 3763.068762]  CIFS VFS: Bad protocol string signature header 4
[ 3763.068788]  CIFS VFS: bad smb detected. The Mid=11646
[ 3763.068794] Bad SMB: : dump of 48 bytes of data at 0xf46e8000
[ 3763.068825]  00000040 00000004 00000032 80018800 @ . . . . . . . 2 . . . . . . .
[ 3763.068855]  00000000 00000000 00000000 1e680040 . . . . . . . . . . . . @ . h .
[ 3763.068885]  2d7e0800 0400020a 02000000 00003800 . . ~ - . . . . . . . . . 8 . .
[ 3778.069085]  CIFS VFS: No response for cmd 50 mid 11646
[ 3784.087139]  CIFS VFS: Bad protocol string signature header 4
[ 3784.087161]  CIFS VFS: bad smb detected. The Mid=11650
[ 3784.087165] Bad SMB: : dump of 48 bytes of data at 0xf46e9500
[ 3784.087171]  00000040 00000004 00000032 80018800 @ . . . . . . . 2 . . . . . . .
[ 3784.087195]  00000000 00000000 00000000 1e680040 . . . . . . . . . . . . @ . h .
[ 3784.087202]  2d820800 0400020a 02000000 00003800 . . . - . . . . . . . . . 8 . .
[ 3799.084053]  CIFS VFS: No response for cmd 50 mid 11650
[ 3805.102848]  CIFS VFS: Bad protocol string signature header 4
[ 3805.102852]  CIFS VFS: bad smb detected. The Mid=11654
[ 3805.102873] Bad SMB: : dump of 48 bytes of data at 0xf46e8540
[ 3805.102879]  00000040 00000004 00000032 80018800 @ . . . . . . . 2 . . . . . . .
[ 3805.102903]  00000000 00000000 00000000 1e680040 . . . . . . . . . . . . @ . h .
[ 3805.102909]  2d860800 0400020a 02000000 00003800 . . . - . . . . . . . . . 8 . .
[ 3820.100062]  CIFS VFS: No response for cmd 50 mid 11654
[ 3826.119095]  CIFS VFS: Bad protocol string signature header 4
[ 3826.119100]  CIFS VFS: bad smb detected. The Mid=11658
[ 3826.119120] Bad SMB: : dump of 48 bytes of data at 0xf46e8fc0
[ 3826.119127]  00000040 00000004 00000032 80018800 @ . . . . . . . 2 . . . . . . .
[ 3826.119151]  00000000 00000000 00000000 1e680040 . . . . . . . . . . . . @ . h .
[ 3826.119157]  2d8a0800 0400020a 02000000 00003800 . . . - . . . . . . . . . 8 . .


It happens once in a while copying things off the filer using the shell, and it happens almost reliably when browsing to the share using any visual file manager.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: smbfs 2:3.4.7~dfsg-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic-pae 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic-pae i686
Architecture: i386
CIFSMounts: Error: command ['mount', '|', 'grep', 'cifs'] failed with exit code 1: mount: only root can do that
Date: Thu Apr  8 09:09:58 2010
InstallationMedia: Xubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100224.1)
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.utf8
 SHELL=/bin/bash
SambaClientRegression: No
SourcePackage: samba

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid

-- 
transfer lockup connecting to a NetApp/CIFS share
https://bugs.launchpad.net/bugs/557890
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