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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Navid Emamdoost <navid.emamdoost@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.4 08/77] st_nci_hci_connectivity_event_received: null check the allocation
Date:   Wed,  4 Sep 2019 19:52:55 +0200
Message-Id: <20190904175304.253216878@linuxfoundation.org>
In-Reply-To: <20190904175303.317468926@linuxfoundation.org>
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[ Upstream commit 3008e06fdf0973770370f97d5f1fba3701d8281d ]

devm_kzalloc may fail and return NULL. So the null check is needed.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nfc/st-nci/se.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nfc/st-nci/se.c b/drivers/nfc/st-nci/se.c
index dbab722a06546..6f9d9b90ac645 100644
--- a/drivers/nfc/st-nci/se.c
+++ b/drivers/nfc/st-nci/se.c
@@ -346,6 +346,8 @@ static int st_nci_hci_connectivity_event_received(struct nci_dev *ndev,
 
 		transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
 					    skb->len - 2, GFP_KERNEL);
+		if (!transaction)
+			return -ENOMEM;
 
 		transaction->aid_len = skb->data[1];
 		memcpy(transaction->aid, &skb->data[2], transaction->aid_len);
-- 
2.20.1