Vladimir Davydov 10bf2f7e7d cgroup: fix fail path in cgroup_load_subsys()
Calling cgroup_unload_subsys() from cgroup_load_subsys() after
online_css() failure will result in a NULL ptr dereference on attempt to
offline_css(), because online_css() only assigns css to cgroup on
success. Let's fix that by skipping calls to offline_css() and
css_free() in cgroup_unload_subsys() if there is no css, and freeing css
in cgroup_load_subsys() on online_css() failure.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
2013-12-13 15:46:49 -05:00
..
2013-11-13 12:09:34 +09:00
2013-11-19 01:07:08 +01:00
2013-04-22 07:09:06 -07:00
2013-09-09 11:19:09 -07:00
2013-10-09 12:36:13 +02:00
2013-11-09 00:16:29 -05:00
2013-09-11 15:58:27 -07:00
2013-04-29 13:55:38 -07:00