From: James Chapman <jchap...@katalix.com> Date: Mon, 12 Feb 2018 17:33:23 +0000
> This patch series addresses several races with L2TP APIs discovered by > syzbot. While working on this, it became clear that the L2TP code > needed some work to address object lifetime issues. There are no > functional changes. > > The set of patches 1-13 in combination fix the following syzbot reports. > > 9df43faf0 KASAN: use-after-free Read in pppol2tp_connect > 6e6a5ec8d general protection fault in pppol2tp_connect > 347bd5acd KASAN: use-after-free Read in inet_shutdown > 19c09769f WARNING in debug_print_object Some symbol export issues: ERROR: "l2tp_tunnel_free" [net/l2tp/l2tp_ppp.ko] undefined! ERROR: "l2tp_tunnel_free" [net/l2tp/l2tp_netlink.ko] undefined! make[1]: *** [scripts/Makefile.modpost:92: __modpost] Error 1 Also, this series is also a hodge-podge of bug fixes that really belong in 'net' alongside cleanups and refactoring that belong in 'net-next'. Can you please pull out the genuine bug fixes into a smaller series targetting 'net' and then after you fix the symbol export issues we can build on top of that in net-next with the cleanups and refactoring. Thank you.
