FAT errors

[Joaquin Cuenca Abela]

Hi,

When using an iBead mp3 player, I'm getting a log of FAT errors.
I reformatted the player in linux, but I'm still getting regularly
errors (stock warty kernel, 2.6.8).

Output from dmesg:

usb 1-1: new full speed USB device using address 4
scsi1 : SCSI emulation for USB Mass Storage devices
  Vendor: EXATEL    Model: i-BEAD100         Rev: 0001
  Type:   Direct-Access                      ANSI SCSI revision: 02
SCSI device sda: 505857 512-byte hdwr sectors (259 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 04
sda: assuming drive cache: write through
 /dev/scsi/host1/bus0/target0/lun0: p1
Attached scsi removable disk sda at scsi1, channel 0, id 0, lun 0
USB Mass Storage device found at 4
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
    File system has been set read-only
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000ff4b)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000f732)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000f9f4)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000f722)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000ffff)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000ffc2)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    invalid access to FAT (entry 0x0000fc91)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
FAT: Filesystem panic (dev sda1)
    fat_get_cluster: invalid cluster chain (i_pos 0)
usb 1-1: USB disconnect, address 4

a dosfsck -a on this unit finds several errors, and then it segfaults.

Am I doing something utherly stupid, or is this a bug in the kernel?
does anybody knows if this has been reported before on this kernel?

Thank you!

Cheers,

-- 
Joaquin Cuenca Abela