[PATCH 0/1] net: avoid a kernel panic during sk_busy_loop

V2: just check napi->dev->netdev_ops instead of getting clever with the netdev registration state. Original cover letter: Hi Dave, I stumbled across a reproducible kernel panic while playing around with busy_poll on a Linux 4.9.86 kernel. There's an unfortunate interaction between init_dummy_net

[PATCH 0/1] net: avoid a kernel panic during sk_busy_loop

Hi Dave, I stumbled across a reproducible kernel panic while playing around with busy_poll on a Linux 4.9.86 kernel. There's an unfortunate interaction between init_dummy_netdev, which doesn't bother to fill in netdev_ops, and sk_busy_loop, which assumes netdev_ops is a valid pointer. To reproduc