Dotnet MAUI集成Shiny 3# Alpha Job遇Android SIGSEGV错误求助

问题背景 #

使用.NET MAUI开发应用，添加用于执行Web API调用的Shiny Job后，Android端出现崩溃，Logcat输出SIGSEGV错误。由于使用的是Shiny MAUI Alpha版本，开发者不提供支持，需确认崩溃源于自身代码还是Shiny的版本Bug，同时怀疑崩溃与ConnectivityService或RequiredInternetAccess = InternetAccess.Any设置相关。

崩溃日志 #

[07-20 08:11:56.776 1452:4329 D/ConnectivityService]
requestNetwork for uid/pid:10515/17091 activeRequest: null callbackRequest: 1115 [NetworkRequest [ REQUEST id=1116, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VCN_MANAGED Uid: 10515 RequestorUid: 10515 RequestorPkg: com.devonuto.myapp UnderlyingNetworks: Null] ]] callback flags: 0 order: 2147483647

[07-20 08:11:56.782 1452:2148 D/WifiNetworkFactory]
got request NetworkRequest [ REQUEST id=1116, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VCN_MANAGED Uid: 10515 RequestorUid: 10515 RequestorPkg: com.devonuto.myapp UnderlyingNetworks: Null] ]

[07-20 08:11:56.782 1452:2148 D/UntrustedWifiNetworkFactory]
got request NetworkRequest [ REQUEST id=1116, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VCN_MANAGED Uid: 10515 RequestorUid: 10515 RequestorPkg: com.devonuto.myapp UnderlyingNetworks: Null] ]

[07-20 08:11:56.783 1452:2148 D/OemPaidWifiNetworkFactory]
got request NetworkRequest [ REQUEST id=1116, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VCN_MANAGED Uid: 10515 RequestorUid: 10515 RequestorPkg: com.devonuto.myapp UnderlyingNetworks: Null] ]

[07-20 08:11:56.793 17091:17116 F/libc]
Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x78 in tid 17116 (WM.task-4), pid 17091 (uto.myapp)

[07-20 08:12:10.219 17119:17119 F/DEBUG]
Cmdline: com.devonuto.myapp

[07-20 08:12:10.219 17119:17119 F/DEBUG]
pid: 17091, tid: 17116, name: WM.task-4  >>> com.devonuto.myapp <<<

[07-20 08:12:10.219 17119:17119 F/DEBUG]
      #00 pc 000000000010a950  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/lib/arm64/libmonosgen-2.0.so (BuildId: 7126846382da0d3e3df8b79b9e84b9aa48aaaf36)

[07-20 08:12:10.219 17119:17119 F/DEBUG]
      #01 pc 000000000010a798  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/lib/arm64/libmonosgen-2.0.so (BuildId: 7126846382da0d3e3df8b79b9e84b9aa48aaaf36)

[07-20 08:12:10.219 17119:17119 F/DEBUG]
      #02 pc 000000000009ab9c  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/lib/arm64/libmonosgen-2.0.so (mono_runtime_invoke+52) (BuildId: 7126846382da0d3e3df8b79b9e84b9aa48aaaf36)

[07-20 08:12:10.219 17119:17119 F/DEBUG]
      #03 pc 000000000002af5c  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/lib/arm64/libmonodroid.so (xamarin::android::internal::MonodroidRuntime::Java_mono_android_Runtime_register(_JNIEnv*, _jstring*, _jclass*, _jstring*)+276) (BuildId: f2b35ad7b68e8f683693b4693ca43b2d312da134)

[07-20 08:12:10.219 17119:17119 F/DEBUG]
      #06 pc 000000000090d5c0  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/oat/arm64/base.vdex (crc6401c279856d6dfa9c.ShinyJobWorker.<clinit>+16)

[07-20 08:12:10.220 17119:17119 F/DEBUG]
      #23 pc 00000000003db2a8  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/oat/arm64/base.vdex (androidx.work.WorkerFactory.createWorkerWithDefaultFallback+20)

[07-20 08:12:10.220 17119:17119 F/DEBUG]
      #29 pc 00000000003df47e  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/oat/arm64/base.vdex (androidx.work.impl.WorkerWrapper.runWorker+734)

[07-20 08:12:10.220 17119:17119 F/DEBUG]
      #35 pc 00000000003df192  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/oat/arm64/base.vdex (androidx.work.impl.WorkerWrapper.run+32)

[07-20 08:12:10.220 17119:17119 F/DEBUG]
      #41 pc 00000000003ee5ac  /data/app/~~vGtfU8056GdzOPsvkH9Xwg==/com.devonuto.myapp-9GAii6I21Z8cSs5-r99zdw==/oat/arm64/base.vdex (androidx.work.impl.utils.SerialExecutor$Task.run+4)

[07-20 08:12:18.887 1452:4329 D/ConnectivityService]
ConnectivityService NetworkRequestInfo binderDied(uid/pid:10515/17091, [NetworkRequest [ REQUEST id=1116, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VCN_MANAGED Uid: 10515 RequestorUid: 10515 RequestorPkg: com.devonuto.myapp UnderlyingNetworks: Null] ]], android.os.BinderProxy@fb80569)

[07-20 08:12:18.887 1452:3898 W/ActivityManager]
Scheduling restart of crashed service com.devonuto.myapp/androidx.work.impl.background.systemjob.SystemJobService in 1000ms for connection

[07-20 08:12:18.887 1452:2155 D/ConnectivityService]
releasing NetworkRequest [ REQUEST id=1116, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VCN_MANAGED Uid: 10515 RequestorUid: 10515 RequestorPkg: com.devonuto.myapp UnderlyingNetworks: Null] ] (release request)

相关代码 #

MauiProgram.cs #

// Shiny Jobs
 builder.Services.AddJob(new JobInfo(typeof(DataRefreshJob), nameof(DataRefreshJob), false)
 {
      RequiredInternetAccess = InternetAccess.Any,     
 }, true);

DataRefreshJob.cs #

public async Task Run(JobInfo jobInfo, CancellationToken cancelToken)
{
    _service = AppService.GetService<IMethodService>();
    _ = _service.GetScheduledApiData();
}

分析 #

1. 崩溃根源定位：从崩溃栈的#06 pc可以看到，崩溃发生在ShinyJobWorker.<clinit>（静态构造函数）阶段，属于Shiny框架的Android Worker类初始化过程。SIGSEGV（段错误）是原生层内存访问错误，结合调用栈来看，是Shiny的.NET到Android原生绑定逻辑出现了问题，大概率是Alpha版本的框架Bug。
2. 网络请求相关判断：Logcat中ConnectivityService的请求日志是正常的网络权限申请流程，并非崩溃直接原因。但RequiredInternetAccess的设置会触发Shiny内部的网络约束处理逻辑，可能是触发Bug的诱因。
3. 自身代码的潜在问题：Run方法中_ = _service.GetScheduledApiData();未使用await且未传递取消令牌，会导致异步操作脱离跟踪，可能引发资源泄漏，但不会直接触发原生层的SIGSEGV崩溃。

建议 #

• 移除网络约束测试：暂时注释RequiredInternetAccess = InternetAccess.Any配置，重新运行应用，若崩溃消失，则说明Shiny处理网络约束的逻辑存在Bug。
• 修复异步调用问题：将Run方法中的异步调用改为await _service.GetScheduledApiData(cancelToken);，正确传递取消令牌，避免异步操作泄漏。
• 简化Job逻辑排查：暂时将Run方法简化为仅输出日志，不调用API，确认崩溃是否由Shiny的初始化逻辑导致，而非API调用。
• 替代方案考虑：由于Shiny是Alpha版本且无官方支持，可尝试直接使用AndroidX WorkManager的.NET绑定实现后台任务，或等待Shiny发布稳定版本。

内容的提问来源于stack exchange，提问作者devonuto