diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2021-11-27 14:59:19 +0000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2021-11-29 07:39:01 -1000 |
| commit | 8291471ea5f1b2e6782cbb9c6ed785f12435245f (patch) | |
| tree | 8d966e63176f47bd01b9a8eedac803d87a8ca986 /kernel/cgroup | |
| parent | eda09706b240ca9129ac4e1fbb4eb1e2bc67aadc (diff) | |
| download | linux-stable-8291471ea5f1b2e6782cbb9c6ed785f12435245f.tar.gz linux-stable-8291471ea5f1b2e6782cbb9c6ed785f12435245f.tar.bz2 linux-stable-8291471ea5f1b2e6782cbb9c6ed785f12435245f.zip | |
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.c | 2 |
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); |