From: Insu Yun <wuninsu@gmail.com>
To: mchehab@osg.samsung.com, hans.verkuil@cisco.com,
prabhakar.csengg@gmail.com, scott.jiang.linux@gmail.com,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: taesoo@gatech.edu, yeongjin.jang@gatech.edu, insu@gatech.edu,
changwoo@gatech.edu, Insu Yun <wuninsu@gmail.com>
Subject: [PATCH] cx231xx: correctly handling failed allocation
Date: Tue, 29 Dec 2015 13:53:35 -0500 [thread overview]
Message-ID: <1451415215-8854-1-git-send-email-wuninsu@gmail.com> (raw)
Since kmalloc can be failed in memory pressure,
if not properly handled, NULL dereference can be happend
Signed-off-by: Insu Yun <wuninsu@gmail.com>
---
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 47a98a2..9725e4f 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);
--
1.9.1
next reply other threads:[~2015-12-29 18:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 18:53 Insu Yun [this message]
2015-12-29 19:05 ` Devin Heitmueller
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