Under the right conditions, secadm may cause a kernel panic due to an
SMAP violation:

1. kldload secadm
2. secadm add integriforce
3. secadm show
4. secadm flush
5. secadm add integriforce
6. secadm show <- panic here

Signed-off-by: Shawn Webb <shawn.webb@hardenedbsd.org>
Reported-by:	Airbus CyberSecurity SAS
Submitted-by:	Airbus CyberSecurity SAS