[Bug 1083080] Re: mounting USB flash memory corrupts FAT

[Christopher M. Penalver]

taj, thank you for reporting this and helping make Ubuntu better. Could
you please confirm this issue exists with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ . If the issue remains, could you please run the
following command in the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the kernel in the mainline kernels archive directory daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.10-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags added: latest-bios-2.44 needs-upstream-testing regression-
potential

** Tags added: needs-usb-trace

** Package changed: udisks (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1083080

Title:
  mounting USB flash memory corrupts FAT

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  With 2 USB flash memory sticks in 2 computers the stick became
  corrupted upon mounting.

  OS: Xubuntu 12.04.1
  Filesystem: FAT
  (1) The files on the memory stick were added in Windows, after deleting a few other files.

  Message at mount:
  Failed to open directory "6C52-B122".
  Error when getting information for file '/media/6C52-B122/2¥w≤û╬. ╗.': file or directory does not exist

  [NB, the second message could be "Error when getting information for
  file '/media/6C52-B122/2¥w≤û╬. ╗.': file or folder does not exist",
  because the last part was Dutch]

  Then I opened the stick in Windows and the files were lost. In Windows, the directory tree was reverted to the tree that existed before the files were added in (1).
  Opening of any file in the reverted tree was not possible.

  Back into Xubuntu I got the following message:
  Failed to mount "2.0 GB File system".
  Error mounting: mount: /dev/sdd1: can't read superblock.

  Reformat (in Windows) the stick to NTFS solves the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: udisks 1.0.4-5ubuntu2.1
  ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31
  Uname: Linux 3.2.0-33-generic i686
  ApportVersion: 2.0.1-0ubuntu15
  Architecture: i386
  CustomUdevRuleFiles: 85-ifupdown.rules 45-libmtp7.rules 85-alsa.rules 95-hal.rules 85-brltty.rules 65-mdadm.vol_id.rules 50-xserver-xorg-input-wacom.rules
  Date: Mon Nov 26 09:46:55 2012
  MachineType: Hewlett-Packard HP d330 uT(DG285T)
  MarkForUpload: True
  ProcKernelCmdLine: root=UUID=[...] ro quiet splash
  SourcePackage: udisks
  UpgradeStatus: Upgraded to precise on 2012-08-27 (90 days ago)
  dmi.bios.date: 08/07/2008
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 786B2 v2.44
  dmi.board.name: 085Ch
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: CZC3431QQ7
  dmi.chassis.type: 7
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr786B2v2.44:bd08/07/2008:svnHewlett-Packard:pnHPd330uT(DG285T):pvr:rvnHewlett-Packard:rn085Ch:rvr:cvnHewlett-Packard:ct7:cvr:
  dmi.product.name: HP d330 uT(DG285T)
  dmi.sys.vendor: Hewlett-Packard

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