On Sat, May 24, 2025 at 03:58:25PM +0800, Haoxiang Li wrote:
> Add check for the return value of rcar_gen4_ptp_alloc()
> to prevent potential null pointer dereference.
Was the null deref observed in the wild? Asking because I am
wondering if this is clean up instead of a Fixes ?
> Fixes: b0d3969d2b4d ("net: ethernet: rtsn: Add support for Renesas Ethernet-TSN")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Haoxiang Li <haoxiang_li2024@xxxxxxx>
> ---
> drivers/net/ethernet/renesas/rtsn.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/ethernet/renesas/rtsn.c b/drivers/net/ethernet/renesas/rtsn.c
> index 6b3f7fca8d15..f5df3374d279 100644
> --- a/drivers/net/ethernet/renesas/rtsn.c
> +++ b/drivers/net/ethernet/renesas/rtsn.c
> @@ -1260,6 +1260,10 @@ static int rtsn_probe(struct platform_device *pdev)
> priv->pdev = pdev;
> priv->ndev = ndev;
> priv->ptp_priv = rcar_gen4_ptp_alloc(pdev);
> + if (!priv->ptp_priv) {
> + ret = -ENOMEM;
> + goto error_free;
> + }
>
> spin_lock_init(&priv->lock);
> platform_set_drvdata(pdev, priv);
> --
> 2.25.1
>
>
