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

** Tags added: bios-outdated-a11 needs-upstream-testing

** Tags removed: kernel-bug-exists-upstream

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https://bugs.launchpad.net/bugs/1091169

Title:
  deep-mounting below symlinked directory in cifs drive causes oops

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  == Regression details ==
  Discovered in version: 3.2.0
  Last known good version: 3.0.0

  This issue was introduced in commit
  fec11dd9a0109fe52fd631e5c510778d6cbff6cc.

  Mounting a cifs path which is below a symlink on the server causes
  oops. Consider the following tree:

   /srv/symtest
   /srv/symtest/dir
   /srv/symtest/dir/subdir
   /srv/symtest/link -> dir

  this works:
    # mount.cifs //smbsrv/symtest/dir/subdir/ /mnt/

  this causes oops:
    # mount.cifs //smbsrv/symtest/link/subdir/ /mnt/

  A example of the oops may be found in
  https://launchpadlibrarian.net/125982530/CurrentDmesg.txt .

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-34-generic 3.2.0-34.53
  ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
  Uname: Linux 3.2.0-34-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu15
  Architecture: amd64
  ArecordDevices: **** List of CAPTURE Hardware Devices ****
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D1', '/dev/snd/hwC0D2', '/dev/snd/hwC0D3', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D9p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'NVidia'/'HDA NVidia at 0xfbdfc000 irq 58'
     Mixer name	: 'Nvidia GPU 10 HDMI/DP'
     Components	: 'HDA:10de0010,10de0101,00100100'
     Controls      : 24
     Simple ctrls  : 4
  Date: Mon Dec 17 11:41:21 2012
  HibernationDevice: RESUME=UUID=b4ff9451-106e-4de4-9ef3-cbb27784222b
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Dell Inc. Precision WorkStation T7400
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=screen
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-34-generic root=UUID=73221f0f-80e8-40ff-bcae-ec4f29a697fd ro quiet splash
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-34-generic N/A
   linux-backports-modules-3.2.0-34-generic  N/A
   linux-firmware                            1.79.1
  RfKill:

  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/31/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A01
  dmi.board.name: 0RW199
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 7
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA01:bd01/31/2008:svnDellInc.:pnPrecisionWorkStationT7400:pvr:rvnDellInc.:rn0RW199:rvr:cvnDellInc.:ct7:cvr:
  dmi.product.name: Precision WorkStation T7400
  dmi.sys.vendor: Dell Inc.

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