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I have an embedded board which runs linux, i have partitioned file system and additionally. I have also added a partition(mtdblock5) such that whenever I attach a pendrive to the embedded board, it automatically mounts it with some settings such as RO, NOEXEC flags set. But I am getting some issue related to the FAT filesystem error.

FAT: Filesystem error (dev mtdblock5)
    fat_bmap_cluster: request beyond EOF (i_pos 5063)

This error message is shown in the output screen sometimes repeatedly in the console. Information related to the board are : ARM controller, UBIFS type root filesystem. I don't know why I am getting this error and how to debug it? Any help would be helpful.

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looks like something is bigger than it should. Check /proc/partitions and 'fdisk -l' –  golimar Aug 28 '13 at 14:04
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