From: Yang Yingliang <yangyingliang@huawei.com>
To: <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>
Cc: <vladimir.oltean@nxp.com>, <davem@davemloft.net>, <kuba@kernel.org>
Subject: [PATCH net-next v2] net: mscc: ocelot: check return value after calling platform_get_resource()
Date: Sat, 5 Jun 2021 10:31:48 +0800 [thread overview]
Message-ID: <20210605023148.4124956-1-yangyingliang@huawei.com> (raw)
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
v2:
add missing goto err_alloc_felix
---
drivers/net/dsa/ocelot/seville_vsc9953.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/dsa/ocelot/seville_vsc9953.c b/drivers/net/dsa/ocelot/seville_vsc9953.c
index 84f93a874d50..deae923c8b7a 100644
--- a/drivers/net/dsa/ocelot/seville_vsc9953.c
+++ b/drivers/net/dsa/ocelot/seville_vsc9953.c
@@ -1206,6 +1206,11 @@ static int seville_probe(struct platform_device *pdev)
felix->info = &seville_info_vsc9953;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ err = -EINVAL;
+ dev_err(&pdev->dev, "Invalid resource\n");
+ goto err_alloc_felix;
+ }
felix->switch_base = res->start;
ds = kzalloc(sizeof(struct dsa_switch), GFP_KERNEL);
--
2.25.1
next reply other threads:[~2021-06-05 2:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-05 2:31 Yang Yingliang [this message]
2021-06-06 1:02 ` [PATCH net-next v2] net: mscc: ocelot: check return value after calling platform_get_resource() Vladimir Oltean
2021-06-07 21:10 ` patchwork-bot+netdevbpf
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