From: Shailendra Verma <shailendra.v@samsung.com>
To: Felix Fietkau <nbd@openwrt.org>,
John Crispin <blogic@openwrt.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
p.shailesh@samsung.com, ashish.kalra@samsung.com,
Shailendra Verma <shailendra.v@samsung.com>,
Shailendra Verma <shailendra.capricorn@gmail.com>
Subject: [PATCH] Net: ethernet: mediatek - Fix possible NULL derefrence.
Date: Fri, 27 Jan 2017 16:49:40 +0530 [thread overview]
Message-ID: <1485515980-3814-1-git-send-email-shailendra.v@samsung.com> (raw)
In-Reply-To: <CGME20170127111947epcas2p14f5ea86f0069142be02339754fda4a55@epcas2p1.samsung.com>
of_match_device could return NULL, and so can cause a NULL
pointer dereference later.
Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 4a62ffd..4495b7b 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2369,6 +2369,10 @@ static int mtk_probe(struct platform_device *pdev)
int i;
match = of_match_device(of_mtk_match, &pdev->dev);
+ if (!match) {
+ dev_err(&pdev->dev, "Error: No device match found\n");
+ return -ENODEV;
+ }
soc = (struct mtk_soc_data *)match->data;
eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL);
--
1.7.9.5
next parent reply other threads:[~2017-01-27 11:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170127111947epcas2p14f5ea86f0069142be02339754fda4a55@epcas2p1.samsung.com>
2017-01-27 11:19 ` Shailendra Verma [this message]
2017-01-27 12:44 ` Corentin Labbe
2017-01-27 16:26 ` David Miller
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