From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: qiang.zhao@nxp.com, davem@davemloft.net, kuba@kernel.org
Cc: netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org, Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH] net: wan: fix error return code of uhdlc_init()
Date: Sun, 7 Mar 2021 01:12:56 -0800 [thread overview]
Message-ID: <20210307091256.22897-1-baijiaju1990@gmail.com> (raw)
When priv->rx_skbuff or priv->tx_skbuff is NULL, no error return code of
uhdlc_init() is assigned.
To fix this bug, ret is assigned with -ENOMEM in these cases.
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
drivers/net/wan/fsl_ucc_hdlc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index dca97cd7c4e7..7eac6a3e1cde 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -204,14 +204,18 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
priv->rx_skbuff = kcalloc(priv->rx_ring_size,
sizeof(*priv->rx_skbuff),
GFP_KERNEL);
- if (!priv->rx_skbuff)
+ if (!priv->rx_skbuff) {
+ ret = -ENOMEM;
goto free_ucc_pram;
+ }
priv->tx_skbuff = kcalloc(priv->tx_ring_size,
sizeof(*priv->tx_skbuff),
GFP_KERNEL);
- if (!priv->tx_skbuff)
+ if (!priv->tx_skbuff) {
+ ret = -ENOMEM;
goto free_rx_skbuff;
+ }
priv->skb_curtx = 0;
priv->skb_dirtytx = 0;
--
2.17.1
next reply other threads:[~2021-03-07 9:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-07 9:12 Jia-Ju Bai [this message]
2021-03-08 20:00 ` [PATCH] net: wan: fix error return code of uhdlc_init() patchwork-bot+netdevbpf
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