From 9e55f15dff80cadac01296cbf805ee0fb414ff58 Mon Sep 17 00:00:00 2001
From: Alban Crequy <alban.crequy@collabora.co.uk>
Date: Mon, 18 Aug 2014 12:20:20 +0100
Subject: [PATCH] cgroup: reject cgroup names with ' '

commit 71b1fb5c4473a5b1e601d41b109bdfe001ec82e0 upstream.

/proc/<pid>/cgroup contains one cgroup path on each line. If cgroup names are
allowed to contain "\n", applications cannot parse /proc/<pid>/cgroup safely.

Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
Signed-off-by: Tejun Heo <tj@kernel.org>
[bwh: Backported to 3.2:
 - Adjust context
 - We have to get the name from the dentry pointer]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Reading git-format-patch failed