[PATCH 1/2] nfc: st21nfca: Check for devm_kzalloc() failure
From: Fabio Estevam <festevam@gmail.com>
Date: 2018-03-24 13:45:10
Subsystem:
nfc subsystem, the rest · Maintainers:
David Heidelberg, Linus Torvalds
From: Fabio Estevam <redacted> devm_kzalloc() may fail, so we should better check for error and propagate the error in the case of allocation failure. This avoids a potential NULL pointer dereference later on. Signed-off-by: Fabio Estevam <redacted> --- drivers/nfc/st21nfca/se.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/nfc/st21nfca/se.c b/drivers/nfc/st21nfca/se.c
index 4bed9e84..fd967a3 100644
--- a/drivers/nfc/st21nfca/se.c
+++ b/drivers/nfc/st21nfca/se.c@@ -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],
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2.7.4