Check the array size *before* dereferencing it with a user provided
offset.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>