access beyond end of device

[Werner Reisberger <wreis@datacomm.ch>]

There is a cronjob with a lot of IO activity (glimpseindex and others)
which regularely causes the following kernel message written to kern.log:

 Jun  5 05:47:25 memo kernel: attempt to access beyond end of device 
 Jun  5 05:47:25 memo kernel: 08:0c: rw=0, want=67136178, limit=610438 
 Jun  5 05:47:25 memo kernel: attempt to access beyond end of device 
 Jun  5 05:47:25 memo kernel: 08:0c: rw=0, want=67136178, limit=610438 
 Jun  5 05:47:26 memo kernel: EXT2-fs error (device 08:0c):
 ext2_free_blocks: Freeing blocks not in datazone - block = 67136177, count
 = 1 

The limit is exactly the end of the device where the cron job runs. The
block which was tried to access is really beyond the device because the hd
has only 17850000 sectors.

Do I have to worry about it? 

-Werner