commit 718c43038f287e843c2f63d946977de90014cb11
author Al Viro <viro@zeniv.linux.org.uk> Thu Dec 20 03:16:27 2018 -0500
committer Al Viro <viro@zeniv.linux.org.uk> Fri Dec 21 11:51:23 2018 -0500
tree 17b8ada3b08990c4493564221a6f082c97fbde42
parent d2497e12e230c3f1be8ca6a0609a98c8c609fb80

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>

fs/super.c

diff --git a/fs/super.c b/fs/super.c
index a5511c4..48e25eb 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;