3d609342cc04 ("l2tp: fix refcount leakage on PPPoL2TP sockets")
d02ba2a6110c ("l2tp: fix race in pppol2tp_release with session object destroy")
225eb26489d0 ("l2tp: don't use inet_shutdown on ppp session destroy")
f98be6c6359e ("l2tp: initialise PPP sessions before registering them")
ee40fb2e1eb5 ("l2tp: protect sock pointer of struct pppol2tp_session with RCU")
3953ae7b218d ("l2tp: don't register sessions in l2tp_session_create()")