Re: [PATCH v2 1/1] net: check before dereferencing netdev_ops during busy poll

2018-03-13 Thread David Miller
From: Josh Elsasser Date: Mon, 12 Mar 2018 22:32:00 -0700 > init_dummy_netdev() leaves its netdev_ops pointer zeroed. This leads > to a NULL pointer dereference when sk_busy_loop fires against an iwlwifi > wireless adapter and checks napi->dev->netdev_ops->ndo_busy_poll. > > Avoid this by ensuri

Re: [PATCH v2 1/1] net: check before dereferencing netdev_ops during busy poll

2018-03-12 Thread Eric Dumazet
On 03/12/2018 10:32 PM, Josh Elsasser wrote: init_dummy_netdev() leaves its netdev_ops pointer zeroed. This leads to a NULL pointer dereference when sk_busy_loop fires against an iwlwifi wireless adapter and checks napi->dev->netdev_ops->ndo_busy_poll. Avoid this by ensuring napi->dev->netdev_