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net: wan: fix error return code of uhdlc_init()

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[ Upstream commit 62765d3955 ]

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jia-Ju Bai 2021-03-07 01:12:56 -08:00 committed by Greg Kroah-Hartman
parent 0da0f199e7
commit b90de232a8
1 changed files with 6 additions and 2 deletions
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8
drivers/net/wan/fsl_ucc_hdlc.c
View file

@ -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;