From: Alan Cox <alan@linux.intel.com>
Date: Tue, 24 Jul 2012 02:42:14 +0000 (+0000)
Subject: caif: fix NULL pointer check
X-Git-Tag: firefly_0821_release~7541^2~854
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4b53a23467b73b472f276d5530a103a736fe8ae1;p=firefly-linux-kernel-4.4.55.git

caif: fix NULL pointer check

[ Upstream commit c66b9b7d365444b433307ebb18734757cb668a02 ]

Reported-by: <rucsoftsec@gmail.com>
Resolves-bug: http://bugzilla.kernel.org/show_bug?44441
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index 3df0c0f8b8bf..82b1802b1d3d 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -325,6 +325,9 @@ static int ldisc_open(struct tty_struct *tty)
 
 	sprintf(name, "cf%s", tty->name);
 	dev = alloc_netdev(sizeof(*ser), name, caifdev_setup);
+	if (!dev)
+		return -ENOMEM;
+
 	ser = netdev_priv(dev);
 	ser->tty = tty_kref_get(tty);
 	ser->dev = dev;