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 a5511c4..48e25eb 100644 (file)
--- 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;