I'm currently working on fixes for various l2tp problems reported by syzbot. If anyone else is also working on this, please get back to me so that we can avoid duplicate effort.
The syzbot reports are: 9df43faf0 KASAN: use-after-free Read in pppol2tp_connect 6e6a5ec8d general protection fault in pppol2tp_connect 065d0fc35 KASAN: use-after-free Read in l2tp_session_create 347bd5acd KASAN: use-after-free Read in inet_shutdown c8e66da87 KASAN: out-of-bounds Read in ip6_xmit 19c09769f WARNING in debug_print_object
