6.15-stable review patch. If anyone has any objections, please let me know.
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From: Haoxiang Li haoxiang_li2024@163.com
commit 95a234f6affbf51f06338383537ab80d637bb785 upstream.
Add check for the return value of rcar_gen4_ptp_alloc() to prevent potential null pointer dereference.
Fixes: b0d3969d2b4d ("net: ethernet: rtsn: Add support for Renesas Ethernet-TSN") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li haoxiang_li2024@163.com Reviewed-by: Niklas Söderlund niklas.soderlund+renesas@ragnatech.se Link: https://patch.msgid.link/20250703100109.2541018-1-haoxiang_li2024@163.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/renesas/rtsn.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/net/ethernet/renesas/rtsn.c +++ b/drivers/net/ethernet/renesas/rtsn.c @@ -1259,7 +1259,12 @@ static int rtsn_probe(struct platform_de priv = netdev_priv(ndev); 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);