From: Yang Yingliang <yangyingliang@huawei.com>
To: <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>
Cc: <davem@davemloft.net>, <kuba@kernel.org>
Subject: [PATCH net-next] fjes: check return value after calling platform_get_resource()
Date: Thu, 10 Jun 2021 16:02:43 +0800 [thread overview]
Message-ID: <20210610080243.4097179-1-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>
---
drivers/net/fjes/fjes_main.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c
index d098b1fcf006..185c8a398681 100644
--- a/drivers/net/fjes/fjes_main.c
+++ b/drivers/net/fjes/fjes_main.c
@@ -1254,6 +1254,10 @@ static int fjes_probe(struct platform_device *plat_dev)
adapter->interrupt_watch_enable = false;
res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0);
+ if (!res) {
+ err = -EINVAL;
+ goto err_free_control_wq;
+ }
hw->hw_res.start = res->start;
hw->hw_res.size = resource_size(res);
hw->hw_res.irq = platform_get_irq(plat_dev, 0);
--
2.25.1
next reply other threads:[~2021-06-10 7:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 8:02 Yang Yingliang [this message]
2021-06-10 21:00 ` patchwork-bot+netdevbpf
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