Description: xfrm: clean up xfrm protocol checks References: https://sites.google.com/view/syzscope/warning-in-xfrm_state_fini-2 https://syzkaller.appspot.com/bug?id=f99edaeec58ad40380ed5813d89e205861be2896 Notes: Bugs: upstream: released (5.1) [dbb2483b2a46fbaf833cfb5deb5ed9cace9c7399] 5.10-upstream-stable: N/A "Fixed before branching point" 4.19-upstream-stable: released (4.19.46) [d410ef75886a4efb3c49b8bacd8e3c295235e744] 4.9-upstream-stable: released (4.9.193) [88d08316dabb6462c32d0adb62c4dade71405d92] sid: released (5.2.6-1) 4.19-buster-security: released (4.19.67-1) 4.9-stretch-security: released (4.9.210-1)