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Date:   Mon, 18 Jul 2022 11:51:53 +0200
From:   Lorenzo Bianconi <>
Subject: [PATCH net] net: ethernet: mtk_ppe: fix possible NULL pointer dereference in mtk_flow_get_wdma_info

odev pointer can be NULL in mtk_flow_offload_replace routine according
to the flower action rules. Fix possible NULL pointer dereference in

Fixes: a333215e10cb5 ("net: ethernet: mtk_eth_soc: implement flow offloading to WED devices")
Signed-off-by: Lorenzo Bianconi <>
 drivers/net/ethernet/mediatek/mtk_ppe_offload.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
index 90e7dfd011c9..5d457bc9acc1 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
@@ -93,6 +93,9 @@ mtk_flow_get_wdma_info(struct net_device *dev, const u8 *addr, struct mtk_wdma_i
 	struct net_device_path path = {};
+	if (!
+		return -ENODEV;
 	memcpy(ctx.daddr, addr, sizeof(ctx.daddr));

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