linux-kernel - [patch] c/r: ipc: uninitialized variable in compat_do_msg

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Message-ID: <20120413133751.GA26645@elgon.mountain>
Date:	Fri, 13 Apr 2012 16:37:51 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Stanislav Kinsbursky <skinsbursky@...allels.com>
Cc:	Chris Metcalf <cmetcalf@...era.com>, Arnd Bergmann <arnd@...db.de>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] c/r: ipc: uninitialized variable in compat_do_msg_fill()

We never initialize "msgp".  It's unfortunate that GCC doesn't warn
about this.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/ipc/compat.c b/ipc/compat.c
index 6da376b..0c2ebd0 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -363,7 +363,7 @@ static long compat_do_msg_steal(void __user *dest, struct msg_msg *msg, size_t b
 
 long compat_do_msg_fill(void __user *dest, struct msg_msg *msg, size_t bufsz)
 {
-	struct compat_msgbuf __user *msgp;
+	struct compat_msgbuf __user *msgp = dest;
 	size_t msgsz;
 
 	if (put_user(msg->m_type, &msgp->mtype))
--
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