From: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
[ Upstream commit 62765d39553cfd1ad340124fe1e280450e8c89e2 ]
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@xxxxxxxxxxxxxxx>
Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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;
--
2.30.1
