null_blk: fix validation of block size
JIRA: https://issues.redhat.com/browse/RHEL-51322 CVE: CVE-2024-41077
Signed-off-by: Ming Lei ming.lei@redhat.com
JIRA: https://issues.redhat.com/browse/RHEL-51322 CVE: CVE-2024-41077
Signed-off-by: Ming Lei ming.lei@redhat.com