tree 29576817c3611442cd60d2ffb7d3740a516586c2
parent 32c1431eea4881a6b17bd7c639315010aeefa452
author Ondrej Mosnáček <omosnacek@gmail.com> 1496677959 +0200
committer Mike Snitzer <snitzer@redhat.com> 1497301555 -0400

dm integrity: reject mappings too large for device

dm-integrity would successfully create mappings with the number of
sectors greater than the provided data sector count.  Attempts to read
sectors of this mapping that were beyond the provided data sector count
would then yield run-time messages of the form "device-mapper:
integrity: Too big sector number: ...".

Fix this by emitting an error when the requested mapping size is bigger
than the provided data sector count.

Signed-off-by: Ondrej Mosnacek <omosnacek@gmail.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>