dm clone: Add missing casts to prevent overflows and data corruption
Add missing casts when converting from regions to sectors. In case BITS_PER_LONG == 32, the lack of the appropriate casts can lead to overflows and miscalculation of the device sector. As a result, we could end up discarding and/or copying the wrong parts of the device, thus corrupting the device's data. Fixes: 7431b783 ("dm: add clone target") Cc: stable@vger.kernel.org # v5.4+ Signed-off-by:Nikos Tsironis <ntsironis@arrikto.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com>
parent
cd481c12