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perf: Fix race in removing an event
[platform/adaptation/renesas_rcar/renesas_kernel.git]
/
kernel
/
cgroup.c
diff --git
a/kernel/cgroup.c
b/kernel/cgroup.c
index
105f273
..
0c753dd
100644
(file)
--- a/
kernel/cgroup.c
+++ b/
kernel/cgroup.c
@@
-4112,17
+4112,17
@@
static int create_css(struct cgroup *cgrp, struct cgroup_subsys *ss)
err = percpu_ref_init(&css->refcnt, css_release);
if (err)
err = percpu_ref_init(&css->refcnt, css_release);
if (err)
- goto err_free;
+ goto err_free
_css
;
init_css(css, ss, cgrp);
err = cgroup_populate_dir(cgrp, 1 << ss->subsys_id);
if (err)
init_css(css, ss, cgrp);
err = cgroup_populate_dir(cgrp, 1 << ss->subsys_id);
if (err)
- goto err_free;
+ goto err_free
_percpu_ref
;
err = online_css(css);
if (err)
err = online_css(css);
if (err)
- goto err_
free
;
+ goto err_
clear_dir
;
dget(cgrp->dentry);
css_get(css->parent);
dget(cgrp->dentry);
css_get(css->parent);
@@
-4138,8
+4138,11
@@
static int create_css(struct cgroup *cgrp, struct cgroup_subsys *ss)
return 0;
return 0;
-err_free:
+err_clear_dir:
+ cgroup_clear_dir(css->cgroup, 1 << css->ss->subsys_id);
+err_free_percpu_ref:
percpu_ref_cancel_init(&css->refcnt);
percpu_ref_cancel_init(&css->refcnt);
+err_free_css:
ss->css_free(css);
return err;
}
ss->css_free(css);
return err;
}