linux-kernel - [PATCH 5.4 040/132] NFC: st95hf: Fix memleak in st95hf_in_send

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Message-Id: <20200915140646.128661704@linuxfoundation.org>
Date:   Tue, 15 Sep 2020 16:12:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dinghao Liu <dinghao.liu@....edu.cn>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 040/132] NFC: st95hf: Fix memleak in st95hf_in_send_cmd

From: Dinghao Liu <dinghao.liu@....edu.cn>

[ Upstream commit f97c04c316d8fea16dca449fdfbe101fbdfee6a2 ]

When down_killable() fails, skb_resp should be freed
just like when st95hf_spi_send() fails.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nfc/st95hf/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nfc/st95hf/core.c b/drivers/nfc/st95hf/core.c
index 9642971e89cea..4578547659839 100644
--- a/drivers/nfc/st95hf/core.c
+++ b/drivers/nfc/st95hf/core.c
@@ -966,7 +966,7 @@ static int st95hf_in_send_cmd(struct nfc_digital_dev *ddev,
 	rc = down_killable(&stcontext->exchange_lock);
 	if (rc) {
 		WARN(1, "Semaphore is not found up in st95hf_in_send_cmd\n");
-		return rc;
+		goto free_skb_resp;
 	}
 
 	rc = st95hf_spi_send(&stcontext->spicontext, skb->data,
-- 
2.25.1