The CN_NETLINK_USERS must be set to the highest valid index +1.
Thanks to Evgeniy for pointing this out.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: stable <stable@kernel.org> [.39]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
 #define CN_VAL_DRBD                    0x1
 #define CN_KVP_IDX                     0x9     /* HyperV KVP */
 
-#define CN_NETLINK_USERS               9
+#define CN_NETLINK_USERS               10      /* Highest index + 1 */
 
 /*
  * Maximum connector's message size.