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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags added: needs-kernel-logs needs-upstream-testing

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https://bugs.launchpad.net/bugs/557890

Title:
  transfer lockup connecting to a NetApp/CIFS share

Status in The Linux Kernel:
  New
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  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

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