From f8433226d1b3eb035693724dca786c4445221368 Mon Sep 17 00:00:00 2001 From: Insu Yun Date: Tue, 29 Dec 2015 16:53:35 -0200 Subject: [PATCH] [media] cx231xx: correctly handling failed allocation Since kmalloc can be failed in memory pressure, if not properly handled, NULL dereference can be happend Signed-off-by: Insu Yun Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/cx231xx/cx231xx-417.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c index 48643b9..c9320d6 100644 --- a/drivers/media/usb/cx231xx/cx231xx-417.c +++ b/drivers/media/usb/cx231xx/cx231xx-417.c @@ -1382,6 +1382,8 @@ static int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb) buffer_size = urb->actual_length; buffer = kmalloc(buffer_size, GFP_ATOMIC); + if (!buffer) + return -ENOMEM; memcpy(buffer, dma_q->ps_head, 3); memcpy(buffer+3, p_buffer, buffer_size-3); -- 2.7.4