Added David Miller to CC since he said it was queued for stable, maybe he can comment
On Wed, Jan 11, 2017 at 12:49 AM, Denys Fedoryshchenko <nuclear...@nuclearcat.com> wrote: > It seems this patch solve issue. I hope it will go to stable asap, because > without it loaded routers crashing almost instantly on 4.9. I'm also worried that you could trigger it remotely.... I suspect the following: intel: fm10k, i40e, i40ev, igb, ixgbe, ixgbevf mellanox: mlx4, mlx5 qlogic: qede since skb_flow_dissect is called by eth_get_headlen in these drivers... My machine was running with igb when it happened, is your network driver in the list? David: Let me know if i can help with the -stable bit in anyway, i've been surprised to see it miss .1 and .2 > commit d0af683407a26a4437d8fa6e283ea201f2ae8146 (patch) > tree e769779cf59b0b73333b50a68db5d0b8897a7cb6 /net/core/flow_dissector.c > parent 94ba998b63c41e92da1b2f0cd8679e038181ef48 (diff) > flow_dissector: Update pptp handling to avoid null pointer deref. > __skb_flow_dissect can be called with a skb or a data packet, either > can be NULL. All calls seems to have been moved to __skb_header_pointer > except the pptp handling which is still calling skb_header_pointer.
