cgroup: fix error return from cgroup_create()
cgroup_create() was returning 0 after allocation failures. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: stable@vger.kernel.org
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 793f371..0eb7b86 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4158,7 +4158,7 @@
struct cgroup *cgrp;
struct cgroup_name *name;
struct cgroupfs_root *root = parent->root;
- int ssid, err = 0;
+ int ssid, err;
struct cgroup_subsys *ss;
struct super_block *sb = root->sb;
@@ -4168,8 +4168,10 @@
return -ENOMEM;
name = cgroup_alloc_name(dentry);
- if (!name)
+ if (!name) {
+ err = -ENOMEM;
goto err_free_cgrp;
+ }
rcu_assign_pointer(cgrp->name, name);
/*
@@ -4177,8 +4179,10 @@
* a half-baked cgroup.
*/
cgrp->id = idr_alloc(&root->cgroup_idr, NULL, 1, 0, GFP_KERNEL);
- if (cgrp->id < 0)
+ if (cgrp->id < 0) {
+ err = -ENOMEM;
goto err_free_name;
+ }
/*
* Only live parents can have children. Note that the liveliness
