From: Zhang Heng <zhangheng@kylinos.cn>
Date: Tue, 14 Jan 2025 01:12:55 +0000 (+0800)
Subject: media: usb: use kmalloc_array() to replace kmalloc()
X-Git-Tag: v6.15-rc1~174^2~125
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8deb1e2a392bbebe159aa4f4d33f4e0a62260c24;p=thirdparty%2Fkernel%2Flinux.git

media: usb: use kmalloc_array() to replace kmalloc()

Use kmalloc_array() to replace kmalloc() with multiplication.
kmalloc_array() has multiply overflow check, which will be safer.

Signed-off-by: Zhang Heng <zhangheng@kylinos.cn>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
---

diff --git a/drivers/media/usb/dvb-usb/cxusb-analog.c b/drivers/media/usb/dvb-usb/cxusb-analog.c
index 8253046cd6e60..3bbee1fcbc8dc 100644
--- a/drivers/media/usb/dvb-usb/cxusb-analog.c
+++ b/drivers/media/usb/dvb-usb/cxusb-analog.c
@@ -817,8 +817,8 @@ static int cxusb_medion_v_start_streaming(struct vb2_queue *q,
 		 * doing a large continuous allocation when (if)
 		 * s-g isochronous USB transfers are supported
 		 */
-		streambuf = kmalloc(npackets * CXUSB_VIDEO_PKT_SIZE,
-				    GFP_KERNEL);
+		streambuf = kmalloc_array(npackets, CXUSB_VIDEO_PKT_SIZE,
+					  GFP_KERNEL);
 		if (!streambuf) {
 			if (i < 2) {
 				ret = -ENOMEM;