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>
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@ -6083,10 +6083,11 @@ struct cgroup_namespace *copy_cgroup_ns(unsigned long flags,
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spin_unlock_bh(&css_set_lock);
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mutex_unlock(&cgroup_mutex);
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err = -ENOMEM;
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new_ns = alloc_cgroup_ns();
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if (!new_ns)
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if (IS_ERR(new_ns)) {
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err = PTR_ERR(new_ns);
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goto err_out;
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}
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new_ns->user_ns = get_user_ns(user_ns);
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new_ns->root_cset = cset;
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