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nfc: s3fwrn5: Fix potential memory leak in s3fwrn5_nci_send()

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[ Upstream commit 3a146b7e3099dc7cf3114f627d9b79291e2d2203 ]

s3fwrn5_nci_send() will call s3fwrn5_i2c_write() or s3fwrn82_uart_write(),
and free the skb if write() failed. However, even if the write() run
succeeds, the skb will not be freed in write(). As the result, the skb
will memleak. s3fwrn5_nci_send() should also free the skb when write()
succeeds.

Fixes: c04c674fadeb ("nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shang XiaoJing 2022-10-27 22:03:31 +08:00 committed by Greg Kroah-Hartman
parent 935b4beb72
commit 1938b290d4
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/nfc/s3fwrn5/core.c
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@ -108,11 +108,15 @@ static int s3fwrn5_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
}
ret = s3fwrn5_write(info, skb);
if (ret < 0)
if (ret < 0) {
kfree_skb(skb);
mutex_unlock(&info->mutex);
return ret;
}
consume_skb(skb);
mutex_unlock(&info->mutex);
return ret;
return 0;
}
static int s3fwrn5_nci_post_setup(struct nci_dev *ndev)