From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 4 Jun 2010 21:14:47 +0000 (-0700)
Subject: fs/compat_rw_copy_check_uvector: add missing compat_ptr call
X-Git-Tag: v2.6.34.1~77
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa31d3fc1debc200bf66240519e77aac606d40fa;p=thirdparty%2Fkernel%2Fstable.git

fs/compat_rw_copy_check_uvector: add missing compat_ptr call

commit 7cbe17701a0379c7b05a79a6df4f24e41d2afde8 upstream.

A call to access_ok is missing a compat_ptr conversion.  Introduced with
b83733639a494d5f42fa00a2506563fbd2d3015d "compat: factor out
compat_rw_copy_check_uvector from compat_do_readv_writev"

fs/compat.c: In function 'compat_rw_copy_check_uvector':
fs/compat.c:629: warning: passing argument 1 of '__access_ok' makes pointer from integer without a cast

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/fs/compat.c b/fs/compat.c
index f0b391c50552d..6490d2134ff3e 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -626,7 +626,7 @@ ssize_t compat_rw_copy_check_uvector(int type,
 		tot_len += len;
 		if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
 			goto out;
-		if (!access_ok(vrfy_dir(type), buf, len)) {
+		if (!access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
 			ret = -EFAULT;
 			goto out;
 		}