From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 20 Dec 2018 08:16:27 +0000 (-0500)
Subject: mount_fs: suppress MAC on MS_SUBMOUNT as well as MS_KERNMOUNT
X-Git-Tag: v5.0-rc1~28^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=718c43038f287e843c2f63d946977de90014cb11;p=linux-2.6-block.git

mount_fs: suppress MAC on MS_SUBMOUNT as well as MS_KERNMOUNT

Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/super.c b/fs/super.c
index a5511c4ba69b..48e25eba8465 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1277,7 +1277,7 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
 	if (error)
 		goto out_sb;
 
-	if (!(flags & MS_KERNMOUNT)) {
+	if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT))) {
 		error = security_sb_kern_mount(sb);
 		if (error)
 			goto out_sb;