[Bug 35054] Cannot mount FAT partitions

[Ross Burton]

Public bug reported:
https://launchpad.net/malone/bugs/35054

Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
When I mount a FAT filesystem I get the following messages in the
syslog:

[4345082.607000] usb 4-4: new high speed USB device using ehci_hcd and address 4
[4345082.722000] scsi1 : SCSI emulation for USB Mass Storage devices
[4345082.722000] usb-storage: device found at 4
[4345082.722000] usb-storage: waiting for device to settle before scanning
[4345087.730000]   Vendor: Apple     Model: iPod              Rev: 1.53
[4345087.730000]   Type:   Direct-Access                      ANSI SCSI revision : 00
[4345087.742000] sda: Spinning up disk....ready
[4345088.744000] SCSI device sda: 29297520 512-byte hdwr sectors (15000 MB)
[4345088.745000] sda: Write Protect is off
[4345088.745000] sda: Mode Sense: 33 00 00 00
[4345088.745000] sda: assuming drive cache: write through
[4345088.748000] SCSI device sda: 29297520 512-byte hdwr sectors (15000 MB)
[4345088.749000] sda: Write Protect is off
[4345088.749000] sda: Mode Sense: 33 00 00 00
[4345088.749000] sda: assuming drive cache: write through
[4345088.749000]  sda: sda1 sda2
[4345088.756000] sd 1:0:0:0: Attached scsi removable disk sda
[4345088.756000] sd 1:0:0:0: Attached scsi generic sg0 type 0
[4345088.757000] usb-storage: device scan complete
[4345089.464000] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[4345117.468000] FAT: Filesystem panic (dev sda2)
[4345117.468000]     fat_free_clusters: deleting FAT entry beyond EOF
[4345117.469000]     File system has been set read-only

This happens for my iPod and two CF cards, so I am doubting that the
filesystems on all of these are broken.  Is there a way I can debug
this?