3 files changed, 13 insertions, 7 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 623108199641..564079c5c49d 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3283,7 +3283,8 @@ static int file_map_prot_check(struct file *file, unsigned long prot, int shared
 	int rc = 0;
 
 	if (default_noexec &&
-	    (prot & PROT_EXEC) && (!file || (!shared && (prot & PROT_WRITE)))) {
+	    (prot & PROT_EXEC) && (!file || IS_PRIVATE(file_inode(file)) ||
+				   (!shared && (prot & PROT_WRITE)))) {
 		/*
 		 * We are making executable an anonymous mapping or a
 		 * private file mapping that will also be writable.
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index d2787cca1fcb..3d2201413028 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1853,7 +1853,6 @@ static struct file_system_type sel_fs_type = {
 };
 
 struct vfsmount *selinuxfs_mount;
-static struct kobject *selinuxfs_kobj;
 
 static int __init init_sel_fs(void)
 {
@@ -1862,13 +1861,13 @@ static int __init init_sel_fs(void)
 	if (!selinux_enabled)
 		return 0;
 
-	selinuxfs_kobj = kobject_create_and_add("selinux", fs_kobj);
-	if (!selinuxfs_kobj)
-		return -ENOMEM;
+	err = sysfs_create_mount_point(fs_kobj, "selinux");
+	if (err)
+		return err;
 
 	err = register_filesystem(&sel_fs_type);
 	if (err) {
-		kobject_put(selinuxfs_kobj);
+		sysfs_remove_mount_point(fs_kobj, "selinux");
 		return err;
 	}
 
@@ -1887,7 +1886,7 @@ __initcall(init_sel_fs);
 #ifdef CONFIG_SECURITY_SELINUX_DISABLE
 void exit_sel_fs(void)
 {
-	kobject_put(selinuxfs_kobj);
+	sysfs_remove_mount_point(fs_kobj, "selinux");
 	kern_unmount(selinuxfs_mount);
 	unregister_filesystem(&sel_fs_type);
 }
diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c
index afe6a269ec17..57644b1dc42e 100644
--- a/security/selinux/ss/ebitmap.c
+++ b/security/selinux/ss/ebitmap.c
@@ -153,6 +153,12 @@ int ebitmap_netlbl_import(struct ebitmap *ebmap,
 		if (offset == (u32)-1)
 			return 0;
 
+		/* don't waste ebitmap space if the netlabel bitmap is empty */
+		if (bitmap == 0) {
+			offset += EBITMAP_UNIT_SIZE;
+			continue;
+		}
+
 		if (e_iter == NULL ||
 		    offset >= e_iter->startbit + EBITMAP_SIZE) {
 			e_prev = e_iter;