From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kangjie Lu Date: Sun, 24 Mar 2019 18:10:02 -0500 Subject: [PATCH] gpio: fix a potential NULL pointer dereference Message-ID: <20190324231002.2106-1-kjlu@umn.edu> List-Id: To: linux-aspeed@lists.ozlabs.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit In case devm_kzalloc, the patch returns ENOMEM to avoid potential NULL pointer dereference. Signed-off-by: Kangjie Lu --- drivers/gpio/gpio-aspeed.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c index 854bce4fb9e7..217507002dbc 100644 --- a/drivers/gpio/gpio-aspeed.c +++ b/drivers/gpio/gpio-aspeed.c @@ -1224,6 +1224,8 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev) gpio->offset_timer = devm_kzalloc(&pdev->dev, gpio->chip.ngpio, GFP_KERNEL); + if (!gpio->offset_timer) + return -ENOMEM; return aspeed_gpio_setup_irqs(gpio, pdev); } -- 2.17.1