From f11dbe2f409c293a1565cfcebbbb703c73e897b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Mon, 5 Jan 2015 19:03:23 -0500
Subject: [PATCH] cgroup: fix error message

systemd[1]: Failed to set memory.limit_in_bytes on : Invalid argument

(cherry picked from commit 6da139137eb4b0ee68ca4aa4ddfdab02e8a5cf98)
---
 src/core/cgroup.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index 6b3b9541b5..5f3d9907b7 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -297,6 +297,9 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha
         /* Some cgroup attributes are not support on the root cgroup,
          * hence silently ignore */
         is_root = isempty(path) || path_equal(path, "/");
+        if (is_root)
+                /* Make sure we don't try to display messages with an empty path. */
+                path = "/";
 
         /* We generally ignore errors caused by read-only mounted
          * cgroup trees (assuming we are running in a container then),