Re: [PATCH net-next 1/3] net: selftests: use skb_share_check() in the loopback receive hook

[Simon Horman]

On Wed, Oct 07, 2026 at 08:29:22PM +0200, Nicolai Buchwitz wrote:
> The loopback hook gets a shared skb when another ETH_P_IP handler is
> bound to the device. skb_unshare() does not unshare it, so
> skb_linearize() on a non-linear frame hits BUG_ON(skb_shared()).
> 
> Use skb_share_check() instead.
> 
> Fixes: 3e1e58d64c3d ("net: add generic selftest support")
> Signed-off-by: Nicolai Buchwitz <nb@xxxxxxxxxxx>

Reviewed-by: Simon Horman <horms@xxxxxxxxxx>