Apache2：LocationMatch 不起作用

Question

我需要禁用/admin/位置的 mod_security，这是我的虚拟主机的完整配置：

<VirtualHost *:443>
    DocumentRoot /home/example/sites/example.com
    ServerName example.com
    ServerAlias www.example.com

    UseCanonicalName Off

    ErrorLog /usr/local/apache/domlogs/example.com.error.log

    LogLevel trace8

    SSLEngine on
    SSLCertificateFile /etc/pki/tls/certs/example.com.cert
    SSLCertificateKeyFile /etc/pki/tls/private/example.com.key
    SSLCertificateChainFile /etc/pki/tls/certs/example.com.bundle
    SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown

    <IfModule mod_userdir.c>
        UserDir disabled
        UserDir enabled /home/example/sites/example.com
    </IfModule>

    <IfModule mod_suphp.c>
        suPHP_UserGroup example example
        suPHP_ConfigPath /home/example
    </IfModule>

    <IfModule mod_ruid2.c>
        RMode config
        RUidGid example example
    </IfModule>

    <IfModule itk.c>
        AssignUserID example example
    </IfModule>

    <Directory "/home/example/sites/example.com">
        AllowOverride All 
        SSLRequireSSL
        Require all granted
    </Directory>

    <Directory "/home/example/public_html">
        AllowOverride All 
        SSLRequireSSL
        Require all granted
    </Directory>

    <LocationMatch "^/admin/?.*"> # Here is trouble
        <IfModule mod_security2.c>
            SecRuleEngine Off 
        </IfModule>
    </LocationMatch>
</VirtualHost>

ModSecurity 仍然不会让请求通过。日志不包含有关 LocationMatch 工作的任何信息。

怎么了？

系统信息：CentOS 7 上的 CWP 管理员。