From 7bf1ed6aff0f70434bd0cdd45495e83f1dffb551 Mon Sep 17 00:00:00 2001
From: Shang XiaoJing <shangxiaojing@huawei.com>
Date: Thu, 27 Oct 2022 22:03:30 +0800
Subject: [PATCH] nfc: nxp-nci: Fix potential memory leak in nxp_nci_send()
nxp_nci_send() will call nxp_nci_i2c_write(), and only free skb when
nxp_nci_i2c_write() failed. However, even if the nxp_nci_i2c_write()
run succeeds, the skb will not be freed in nxp_nci_i2c_write(). As the
result, the skb will memleak. nxp_nci_send() should also free the skb
when nxp_nci_i2c_write() succeeds.
Fixes: dece45855a8b ("NFC: nxp-nci: Add support for NXP NCI chips")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/nfc/nxp-nci/core.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/nxp-nci/core.c b/drivers/nfc/nxp-nci/core.c
index 7c93d484dc1bc..580cb6ecffee4 100644
--- a/drivers/nfc/nxp-nci/core.c
+++ b/drivers/nfc/nxp-nci/core.c
@@ -80,10 +80,13 @@ static int nxp_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
return -EINVAL;
r = info->phy_ops->write(info->phy_id, skb);
- if (r < 0)
+ if (r < 0) {
kfree_skb(skb);
+ return r;
+ }
- return r;
+ consume_skb(skb);
+ return 0;
}
static int nxp_nci_rf_pll_unlocked_ntf(struct nci_dev *ndev,
--
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