From: Zefan Li <lizefan@huawei.com>
Date: Wed, 4 Mar 2015 09:09:33 +0000 (+0800)
Subject: cpuset: initialize cpuset a bit early
X-Git-Tag: v4.1-rc1~155^2~3
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=695df2132cfe3782784d4b0e1f0027168c1830ca;p=linux.git

cpuset: initialize cpuset a bit early

Now we call ss->bind() in cgroup_init(), so cgroup_init() will
call cpuset_bind() and then the latter will access top_cpuset's
cpumask, which is NULL, because cpuset_init() is called after
cgroup_init()

The simplest fix is to swap cgroup_init() and cpuset_init().

Cc: Vladimir Davydov <vdavydov@parallels.com>
Fixes: 295458e67284 ("cgroup: call cgroup_subsys->bind on cgroup subsys initialization")
Reported by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
---

diff --git a/init/main.c b/init/main.c
index 6f0f1c5ff8cc..4a6974e67839 100644
--- a/init/main.c
+++ b/init/main.c
@@ -654,8 +654,8 @@ asmlinkage __visible void __init start_kernel(void)
 	page_writeback_init();
 	proc_root_init();
 	nsfs_init();
-	cgroup_init();
 	cpuset_init();
+	cgroup_init();
 	taskstats_init_early();
 	delayacct_init();