kcm: annotate data-races around kcm->rx_wait
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.332 by commit dbc3a0b917c4f75292b1c0819c188e40fd3c8924, it was introduced in version v4.6 by commit ab7ac4eb9832e32a09f4e8042705484d2fb0aad3. For more details please see the references link.