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policy->name is a substring of policy->hname, if prefix is not NULL, it will allocted strlen(prefix) + strlen(name) + 3 bytes to policy->hname in policy_init(). use kzfree(ns->base.name) will casue memory leak if alloc_namespace() failed. Signed-off-by: Zhitong Wang <zhitong.wangzt@alibaba-inc.com> Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>