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authorWei Yang2021-11-27 14:59:19 +0000
committerTejun Heo2021-11-29 07:39:01 -1000
commit8291471ea5f1b2e6782cbb9c6ed785f12435245f (patch)
tree8d966e63176f47bd01b9a8eedac803d87a8ca986 /kernel/cgroup
parenteda09706b240ca9129ac4e1fbb4eb1e2bc67aadc (diff)
cgroup: get the wrong css for css_alloc() during cgroup_init_subsys()
css_alloc() needs the parent css, while cgroup_css() gets current cgropu's css. So we are getting the wrong css during cgroup_init_subsys(). Fortunately, cgrp_dfl_root.cgrp's css is not set yet, so the value we pass to css_alloc() is NULL anyway. Let's pass NULL directly during init, since we know there is no parent yet. Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup')
-rw-r--r--kernel/cgroup/cgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 919194de39c8..f522cee8e650 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -5711,7 +5711,7 @@ static void __init cgroup_init_subsys(struct cgroup_subsys *ss, bool early)
/* Create the root cgroup state for this subsystem */
ss->root = &cgrp_dfl_root;
- css = ss->css_alloc(cgroup_css(&cgrp_dfl_root.cgrp, ss));
+ css = ss->css_alloc(NULL);
/* We don't handle early failures gracefully */
BUG_ON(IS_ERR(css));
init_and_link_css(css, ss, &cgrp_dfl_root.cgrp);