linux-kernel - [PATCH 4 of 5] xen pvfb: Zero unused bytes in events sent to backend

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Message-Id: <d4519d6b15a1e1b9625e.1211547984@localhost>
Date:	Fri, 23 May 2008 14:06:24 +0100
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Markus Armbruster <armbru@...hat.com>
Subject: [PATCH 4 of 5] xen pvfb: Zero unused bytes in events sent to backend

From: Markus Armbruster <armbru@...hat.com>

This isn't a security flaw (the backend can see all our memory
anyway).  But it's the right thing to do all the same.

Signed-off-by: Markus Armbruster <armbru@...hat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
---
 drivers/video/xen-fbfront.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
--- a/drivers/video/xen-fbfront.c
+++ b/drivers/video/xen-fbfront.c
@@ -61,6 +61,7 @@
 	union xenfb_out_event event;
 	u32 prod;
 
+	memset(&event, 0, sizeof(event));
 	event.type = XENFB_TYPE_UPDATE;
 	event.update.x = x;
 	event.update.y = y;


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