Re: [PATCH v1] net/ethtool/ioctl: ensure that we have phy ops before using them

From: Saeed Mahameed
Date: Wed Nov 16 2022 - 17:55:25 EST


On 15 Nov 16:40, Andrew Lunn wrote:
On Mon, Nov 14, 2022 at 09:07:05PM -0800, Jakub Kicinski wrote:
On Mon, 14 Nov 2022 11:15:32 +0300 Daniil Tatianin wrote:
> + if (!(phydev && phy_ops && phy_ops->get_stats) &&
> + !ops->get_ethtool_phy_stats)

This condition is still complicated.

> + return -EOPNOTSUPP;

The only way this crash can happen is if driver incorrectly returns
non-zero stats count but doesn't have a callback to read the stats.
So WARN_ON() would be in order here.

Hi Daniil

I'm missing the patch itself, and b4 does not return it. Please

same! I only see Jakub's reply, maybe the patch didn't make it through to
netdev ML ?