is_trusted_reg
if (!is_trusted_reg(env, reg)) {
static bool is_trusted_reg(struct bpf_verifier_env *env, const struct bpf_reg_state *reg);
(type == PTR_TO_BTF_ID && is_trusted_reg(env, reg)) ||
} else if (is_trusted_reg(env, reg) || is_rcu_reg(reg)) {