access beyond end of device?

[Brian Chabot]

I just noticed a somewhat disturbing entry in my logs....

Jul  8 15:35:23 hostname kernel: attempt to access beyond end of device
Jul  8 15:35:23 hostname kernel: hdb1: rw=0, want=7144059272, limit=40017852
Jul  8 15:35:23 hostname kernel: attempt to access beyond end of device
Jul  8 15:35:23 hostname kernel: hdb1: rw=0, want=7144059272, limit=40017852

So I checked the disk:
$ ls -la /dev/hdb1
lr-xr-xr-x  1 root root 33 Apr 26 16:20 /dev/hdb1 -> 
ide/host0/bus0/target1/lun0/part1
$  df -h /dev/ide/host0/bus0/target1/lun0/part1
Filesystem            Size  Used Avail Use% Mounted on
/dev/ide/host0/bus0/target1/lun0/part1
                       19G   12G  6.7G  63% /home
WTF?

Running a search for this was not all that helphul.  It seems the 
consensus is that the device is one size and Linux seems to be 
configured for a different size.  Does that sound right?