linux-kernel - [PATCH] staging: usbip: use kcalloc instead of kzalloc for array allocations

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Message-Id: <1400846938-31333-1-git-send-email-dj@zeko.me>
Date:	Fri, 23 May 2014 12:08:58 +0000
From:	Djordje Zekovic <dj@...o.me>
To:	gregkh@...uxfoundation.org
Cc:	linux-kernel@...r.kernel.org, richard.weinberger@...il.com,
	Djordje Zekovic <dj@...o.me>
Subject: [PATCH] staging: usbip: use kcalloc instead of kzalloc for array allocations

The advantage of kcalloc is, that will prevent integer overflows which could
result from the multiplication of number of elements and size and it is also
a bit nicer to read.

Signed-off-by: Djordje Zekovic <dj@...o.me>
---
 Fixed: Richard Weinberger <richard.weinberger@...il.com> pointed to 
 	building issue in his review.
 drivers/staging/usbip/stub_tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/usbip/stub_tx.c b/drivers/staging/usbip/stub_tx.c
index 1622563..f09abb2 100644
--- a/drivers/staging/usbip/stub_tx.c
+++ b/drivers/staging/usbip/stub_tx.c
@@ -179,7 +179,7 @@ static int stub_send_ret_submit(struct stub_device *sdev)
 		else
 			iovnum = 2;
 
-		iov = kzalloc(iovnum * sizeof(struct kvec), GFP_KERNEL);
+		iov = kcalloc(iovnum, sizeof(struct kvec), GFP_KERNEL);
 
 		if (!iov) {
 			usbip_event_add(&sdev->ud, SDEV_EVENT_ERROR_MALLOC);
-- 
1.8.5.2

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