From mboxrd@z Thu Jan 1 00:00:00 1970 From: Namhyung Kim Subject: [PATCH 1/2] net/core: remove address space warnings on verify_iovec() Date: Wed, 8 Sep 2010 22:48:47 +0900 Message-ID: <1283953728-15302-1-git-send-email-namhyung@gmail.com> Cc: linux-kernel@vger.kernel.org To: "David S. Miller" , netdev@vger.kernel.org Return-path: Received: from mail-px0-f174.google.com ([209.85.212.174]:52357 "EHLO mail-px0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750994Ab0IHNtM (ORCPT ); Wed, 8 Sep 2010 09:49:12 -0400 Sender: netdev-owner@vger.kernel.org List-ID: move_addr_to_kernel() and copy_from_user() requires their argument as __user pointer but were missing proper markups. Add it. This removes following warnings from sparse. net/core/iovec.c:44:52: warning: incorrect type in argument 1 (different address spaces) net/core/iovec.c:44:52: expected void [noderef] *uaddr net/core/iovec.c:44:52: got void *msg_name net/core/iovec.c:55:34: warning: incorrect type in argument 2 (different address spaces) net/core/iovec.c:55:34: expected void const [noderef] *from net/core/iovec.c:55:34: got struct iovec *msg_iov Signed-off-by: Namhyung Kim --- net/core/iovec.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/net/core/iovec.c b/net/core/iovec.c index 1cd98df..f4657c2 100644 --- a/net/core/iovec.c +++ b/net/core/iovec.c @@ -41,7 +41,9 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, if (m->msg_namelen) { if (mode == VERIFY_READ) { - err = move_addr_to_kernel(m->msg_name, m->msg_namelen, + void __user *namep; + namep = (void __user __force *) m->msg_name; + err = move_addr_to_kernel(namep, m->msg_namelen, address); if (err < 0) return err; @@ -52,7 +54,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, } size = m->msg_iovlen * sizeof(struct iovec); - if (copy_from_user(iov, m->msg_iov, size)) + if (copy_from_user(iov, (void __user __force *) m->msg_iov, size)) return -EFAULT; m->msg_iov = iov; -- 1.7.2.2