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From:   Sasha Levin <Alexander.Levin@microsoft.com>
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        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Dan Carpenter <dan.carpenter@oracle.com>,
        Samuel Ortiz <sameo@linux.intel.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.9 094/219] NFC: nfcmrvl: double free on error
 path
Thread-Topic: [PATCH AUTOSEL for 4.9 094/219] NFC: nfcmrvl: double free on
 error path
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Date:   Sat, 3 Mar 2018 22:28:50 +0000
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From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit ca42fb9e52d155547e6cf18cf26bce3e1a6af4ea ]

The nci_spi_send() function calls kfree_skb(skb) on both error and
success so this extra kfree_skb() is a double free.

Fixes: caf6e49bf6d0 ("NFC: nfcmrvl: add spi driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/nfc/nfcmrvl/spi.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/nfc/nfcmrvl/spi.c b/drivers/nfc/nfcmrvl/spi.c
index a7faa0bcc01e..fc8e78a29d77 100644
--- a/drivers/nfc/nfcmrvl/spi.c
+++ b/drivers/nfc/nfcmrvl/spi.c
@@ -96,10 +96,9 @@ static int nfcmrvl_spi_nci_send(struct nfcmrvl_private *=
priv,
 	/* Send the SPI packet */
 	err =3D nci_spi_send(drv_data->nci_spi, &drv_data->handshake_completion,
 			   skb);
-	if (err !=3D 0) {
+	if (err)
 		nfc_err(priv->dev, "spi_send failed %d", err);
-		kfree_skb(skb);
-	}
+
 	return err;
 }
=20
--=20
2.14.1