netdev - [PATCH net] net: hso: check for allocation failure in hso_create_bulk_serial

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Date:   Wed, 12 May 2021 13:09:04 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Denis Joseph Barrow <D.Barow@...ion.com>
Cc:     Jakub Kicinski <kuba@...nel.org>, Oliver Neukum <oneukum@...e.com>,
        Anirudh Rayabharam <mail@...rudhrb.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Johan Hovold <johan@...nel.org>,
        Rustam Kovhaev <rkovhaev@...il.com>,
        Zheng Yongjun <zhengyongjun3@...wei.com>,
        Emil Renner Berthing <kernel@...il.dk>,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH net] net: hso: check for allocation failure in
 hso_create_bulk_serial_device()

Add a couple checks for if these allocations fail.

Fixes: 542f54823614 ("tty: Modem functions for the HSO driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/net/usb/hso.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 3ef4b2841402..3b2a868d7a72 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2618,9 +2618,13 @@ static struct hso_device *hso_create_bulk_serial_device(
 		num_urbs = 2;
 		serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
 					   GFP_KERNEL);
+		if (!serial->tiocmget)
+			goto exit;
 		serial->tiocmget->serial_state_notification
 			= kzalloc(sizeof(struct hso_serial_state_notification),
 					   GFP_KERNEL);
+		if (!serial->tiocmget->serial_state_notification)
+			goto exit;
 		/* it isn't going to break our heart if serial->tiocmget
 		 *  allocation fails don't bother checking this.
 		 */
-- 
2.30.2