Hi Andrew,

On Fri, Sep 21, 2018 at 5:13 AM Andrew Lunn [off-list ref] 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