* [PATCH 4.9 080/125] net/wan/fsl_ucc_hdlc: Avoid double free in ucc_hdlc_probe()
[not found] <20191204175308.377746305@linuxfoundation.org>
@ 2019-12-04 17:56 ` Greg Kroah-Hartman
0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2019-12-04 17:56 UTC (permalink / raw)
To: linux-kernel
Cc: Sasha Levin, Peng Hao, Greg Kroah-Hartman, stable, Wen Yang,
netdev, linuxppc-dev, David S. Miller, Zhao Qiang
From: Wen Yang <wen.yang99@zte.com.cn>
[ Upstream commit 40752b3eae29f8ca2378e978a02bd6dbeeb06d16 ]
This patch fixes potential double frees if register_hdlc_device() fails.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Reviewed-by: Peng Hao <peng.hao2@zte.com.cn>
CC: Zhao Qiang <qiang.zhao@nxp.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: netdev@vger.kernel.org
CC: linuxppc-dev@lists.ozlabs.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wan/fsl_ucc_hdlc.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 7a62316c570d2..b2c1e872d5ed5 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -1117,7 +1117,6 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
if (register_hdlc_device(dev)) {
ret = -ENOBUFS;
pr_err("ucc_hdlc: unable to register hdlc device\n");
- free_netdev(dev);
goto free_dev;
}
--
2.20.1
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