[PATCH] net: ethernet: rtsn: Fix a null pointer dereference in rtsn_probe()
From: Haoxiang Li <hidden>
Date: 2025-05-24 07:59:07
Also in:
linux-renesas-soc, lkml, stable
Subsystem:
networking drivers, renesas ethernet tsn driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Niklas Söderlund, Linus Torvalds
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 <redacted>
---
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