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cgroup: fix alloc_cgroup_ns() error handling in copy_cgroup_ns() 

alloc_cgroup_ns() returns an ERR_PTR value on error but
copy_cgroup_ns() was checking for NULL for error.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
This commit is contained in:
Tejun Heo 2016-02-18 11:44:24 -05:00
parent 1c53753e0d
commit d22025570e
1 changed files with 3 additions and 2 deletions
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5
kernel/cgroup.c
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@ -6083,10 +6083,11 @@ struct cgroup_namespace *copy_cgroup_ns(unsigned long flags,
spin_unlock_bh(&css_set_lock);
mutex_unlock(&cgroup_mutex);
err = -ENOMEM;
new_ns = alloc_cgroup_ns();
if (!new_ns)
if (IS_ERR(new_ns)) {
err = PTR_ERR(new_ns);
goto err_out;
}
new_ns->user_ns = get_user_ns(user_ns);
new_ns->root_cset = cset;