Hi Andrew, On Fri, Sep 21, 2018 at 5:13 AM Andrew Lunn <andrew@xxxxxxx> wrote: > Do you any stack usage information? > > A VPN can be at the bottom of some deep stack calls. Swap on NFS over > the VPN? If you have one frame of 1K, you might be O.K. But if you > have a few of these, i can see there might be issues of overflowing > the stack. It's pretty small, and most of the work is punted onto workqueues pretty early, so the depth isn't as much of an issue as it would be if I did everything from ndo_start_xmit. I've done some stack tracking using the debug option for that, and it's generally far from the deepest thing running. Jason
