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28 lines
1004 B
Diff
28 lines
1004 B
Diff
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Mon, 18 Jul 2022 11:51:53 +0200
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Subject: [PATCH] net: ethernet: mtk_ppe: fix possible NULL pointer dereference
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in mtk_flow_get_wdma_info
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odev pointer can be NULL in mtk_flow_offload_replace routine according
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to the flower action rules. Fix possible NULL pointer dereference in
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mtk_flow_get_wdma_info.
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Fixes: a333215e10cb5 ("net: ethernet: mtk_eth_soc: implement flow offloading to WED devices")
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Link: https://lore.kernel.org/r/4e1685bc4976e21e364055f6bee86261f8f9ee93.1658137753.git.lorenzo@kernel.org
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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@@ -93,6 +93,9 @@ mtk_flow_get_wdma_info(struct net_device
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};
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struct net_device_path path = {};
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+ if (!ctx.dev)
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+ return -ENODEV;
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+
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memcpy(ctx.daddr, addr, sizeof(ctx.daddr));
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if (!IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED))
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