13 Oct
2022
13 Oct
'22
5:53 a.m.
On Wed, Oct 12, 2022 at 08:27:56PM -0400, Sasha Levin wrote:
From: Nathan Huckleberry nhuck@google.com
[ Upstream commit b77599043f00fce9253d0f22522c5d5b521555ce ]
The ndo_start_xmit field in net_device_ops is expected to be of type netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).
The mismatched return type breaks forward edge kCFI since the underlying function definition does not match the function hook definition.
kCFI showed up in 6.1, so this is not needed in any stable branches, please drop it from all.
thanks,
greg k-h