无法从macOS应用连接DriverKit系统扩展（DEXT）求助

我正在开发一款macOS应用，需要与基于DriverKit创建的系统扩展（DEXT）通信。尽管扩展已安装并激活，但应用始终无法与DEXT建立连接，具体细节如下：

• DEXT的Bundle标识符为com.Henhen1227.KeySoundboard.SoundboardDriver；
• systemextensionsctl list显示DEXT已安装并激活：

--- com.apple.system_extension.driver_extension
enabled active teamID bundleID (version) name [state]
 * * ---------- com.Henhen1227.KeySoundboard.SoundboardDriver (1.0/1) com.Henhen1227.KeySoundboard.SoundboardDriver [activated enabled]

• 应用中尝试通过IOServiceGetMatchingService连接DEXT，但未返回匹配服务，无法建立用户客户端连接；
• ioreg -l -b命令未输出任何与该DEXT相关的信息。

开发环境：macOS 13.4.1、Xcode 14.3.1 (14E300c)，DEXT代码参考Apple官方音频驱动示例，即使运行未修改的示例代码（已正确签名配置），仍出现相同问题。

相关代码片段 #

激活扩展的Swift代码（在viewDidLoad中调用） #

/// - Tag: ActivateExtension
    func activateExtension(_ dextIdentifier: String) {

        let request = OSSystemExtensionRequest
            .activationRequest(forExtensionWithIdentifier: dextIdentifier,
                               queue: .main)
        print(dextIdentifier)
        print(request.description)
        request.delegate = self
        OSSystemExtensionManager.shared.submitRequest(request)
    }

连接DEXT的Objective-C代码（激活5秒后主线程调用，持续返回“Driver Extension is not running.”） #

// Open a user client instance, which initiates communication with the driver.
- (NSString*) open
{
    if (_ioObject == IO_OBJECT_NULL && _ioConnection == IO_OBJECT_NULL)
    {
        // Get the IOKit main port.
        mach_port_t theMainPort = MACH_PORT_NULL;
        kern_return_t theKernelError = IOMainPort(bootstrap_port, &theMainPort);
        NSLog(@"theMainPort: %u, theKernelError: %u", theMainPort, theKernelError);
        if (theKernelError != kIOReturnSuccess)
        {
            return @"Failed to get IOMainPort.";
        }

        // Create a matching dictionary for the driver class. Note that classes
        // published by a dext need to be matched by class name rather than
        // other methods. So be sure to use IOServiceNameMatching rather than
        // IOServiceMatching to construct the dictionary.
        CFDictionaryRef theMatchingDictionary = IOServiceNameMatching(kSoundboardDriverClassName); // kSoundboardDriverClassName = "SoundboardDriver"
        NSLog(@"theMatchingDictionary: %@", theMatchingDictionary);
        io_service_t matchedService = IOServiceGetMatchingService(theMainPort, theMatchingDictionary);
        NSLog(@"matchedService: %u", matchedService);
        
        theKernelError = IOObjectRelease(matchedService);
        NSLog(@"IOObjectRelease theKernelError: %u", theKernelError);

        
        if (theKernelError != KERN_SUCCESS) {
            return @"IOServiceGetMatchingService failed with error: %u";
        }
        if (matchedService)
        {
            _ioObject = matchedService;
            theKernelError = IOServiceOpen(_ioObject, mach_task_self(), 0, &_ioConnection);
            NSLog(@"_ioObject: %u, _ioConnection: %u, IOServiceOpen theKernelError: %u", _ioObject, _ioConnection, theKernelError);

            if (theKernelError == kIOReturnSuccess)
            {
                OSStatus error = [self checkDeviceCustomProperties];
                if (error)
                {
                    return @"Connection to user client succeeded, but custom properties could not be validated";
                }
                return @"Connection to user client succeeded";
            }
            else
            {
                _ioObject = IO_OBJECT_NULL;
                _ioConnection = IO_OBJECT_NULL;
                return [NSString stringWithFormat:@"Failed to open user client connection, error:%u.", theKernelError];
            }
        }
        return @"Driver Extension is not running";
        
    }
    return @"User client is already connected";
}

补充日志信息 #

Console中捕获的扩展启动错误 #

activateDecision found two entries for teamID("5BHAWQJGY5") com.Henhen1227.KeySoundboard.SoundboardDriver in state:
    7B8B8559-3F37-4236-B39B-DE0CB791DD37 (1.1): terminating_for_upgrade_via_delegate
    11C738A7-A013-4464-95C6-0AB5829B66CC (1.1): activated_enabled

重复运行systemextensionsctl list的输出 #

5BHAWQJGY5  com.Henhen1227.KeySoundboard.SoundboardDriver (1.1/2)   SoundboardDriver    [terminating for upgrade via delegate]
 * *    5BHAWQJGY5  com.Henhen1227.KeySoundboard.SoundboardDriver (1.1/2)   SoundboardDriver    [activated enabled]

恳请提供排查思路与解决方案，帮助解决应用与DEXT的连接问题。

内容的提问来源于stack exchange，提问作者Henhen1227