st21nfca_connectivity_event_received: null check the allocation
authorNavid Emamdoost <navid.emamdoost@gmail.com>
Tue, 23 Jul 2019 22:04:30 +0000 (17:04 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 29 Aug 2019 06:28:31 +0000 (08:28 +0200)
[ Upstream commit 9891d06836e67324c9e9c4675ed90fc8b8110034 ]

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/st21nfca/se.c

index 4bed9e8..fd967a3 100644 (file)
@@ -328,6 +328,8 @@ int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
 
                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],