 diff -rupN linux-3.14.27-orig/security/Kconfig linux-3.14.27/security/Kconfig
---- linux-3.14.27-orig/security/Kconfig	2015-01-05 23:07:57.657890028 +0200
-+++ linux-3.14.27/security/Kconfig	2015-01-05 23:08:18.313890519 +0200
+--- linux-3.14.27-orig/security/Kconfig	2015-01-07 21:35:59.461971583 +0200
++++ linux-3.14.27/security/Kconfig	2015-01-07 21:36:06.841971758 +0200
 @@ -122,6 +122,7 @@ source security/smack/Kconfig
  source security/tomoyo/Kconfig
  source security/apparmor/Kconfig

+	    (0 == strcmp("sysfs", mnt->mnt_sb->s_type->name)) ||
+	    (0 == strcmp("devtmpfs", mnt->mnt_sb->s_type->name)) ||
+	    (0 == strcmp("devpts", mnt->mnt_sb->s_type->name)) ||
+	    (0 == strcmp("fuse.logfence", mnt->mnt_sb->s_type->name))) {
+		tsk = current;
+		printk(KERN_ALERT "rlsd: denied unmount of %s from %lu (%s)\n",
+		       mnt->mnt_sb->s_type->name,
+		       (unsigned long) tsk->pid,
+		       get_task_comm(name, tsk));
+		return -EPERM;
+	}
+

 
 endmenu
diff -rupN linux-3.14.27-orig/security/Makefile linux-3.14.27/security/Makefile
--- linux-3.14.27-orig/security/Makefile	2015-01-07 21:35:59.461971583 +0200
+++ linux-3.14.27/security/Makefile	2015-01-07 21:36:06.845971759 +0200
@@ -8,6 +8,7 @@ subdir-$(CONFIG_SECURITY_SMACK)		+= smac
 subdir-$(CONFIG_SECURITY_TOMOYO)        += tomoyo
 subdir-$(CONFIG_SECURITY_APPARMOR)	+= apparmor
