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NullRef installing WebAssembly AOT workload on Linux

See original GitHub issue
Writing workload pack installation record for Microsoft.NET.Runtime.Emscripten.Node version 6.0.0-preview.4.21220.1...
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.DotNet.Workloads.Workload.Install.NetSdkManagedInstaller.GetPackInstallRecordPath(PackInfo packInfo, SdkFeatureBand featureBand) in dotnet.dll:token 0x60001c5+0x0
   at Microsoft.DotNet.Workloads.Workload.Install.NetSdkManagedInstaller.DeletePackInstallationRecord(PackInfo packInfo, SdkFeatureBand featureBand) in dotnet.dll:token 0x60001c7+0x0
   at Microsoft.DotNet.Workloads.Workload.Install.NetSdkManagedInstaller.RollBackWorkloadPackInstall(PackInfo packInfo, SdkFeatureBand sdkFeatureBand) in dotnet.dll:token 0x60001bd+0x0
   at Microsoft.DotNet.Workloads.Workload.Install.WorkloadInstallCommand.<>c__DisplayClass14_1.<InstallWorkloadsWithInstallRecord>b__3() in dotnet.dll:token 0x6000b20+0x15
   at Microsoft.DotNet.Cli.TransactionalAction.EnlistmentNotification.Rollback(Enlistment enlistment) in dotnet.dll:token 0x6000ced+0x8
   at System.Transactions.VolatileEnlistmentAborting.EnterState(InternalEnlistment enlistment) in System.Transactions.Local.dll:token 0x6000404+0x0
   at System.Transactions.VolatileEnlistmentActive.InternalAborted(InternalEnlistment enlistment) in System.Transactions.Local.dll:token 0x60003e9+0x0
   at System.Transactions.TransactionStateAborted.EnterState(InternalTransaction tx) in System.Transactions.Local.dll:token 0x6000259+0x4c
   at System.Transactions.TransactionStateActive.Rollback(InternalTransaction tx, Exception e) in System.Transactions.Local.dll:token 0x6000224+0x8
   at System.Transactions.Transaction.Rollback() in System.Transactions.Local.dll:token 0x600010b+0x4b
   at System.Transactions.TransactionScope.InternalDispose() in System.Transactions.Local.dll:token 0x600019c+0x95
   at System.Transactions.TransactionScope.Dispose() in System.Transactions.Local.dll:token 0x600019b+0x34b
   at Microsoft.DotNet.Cli.TransactionalAction.Run[T](Func`1 action, Action commit, Action rollback) in dotnet.dll:token 0x6000922+0x47
   at Microsoft.DotNet.Cli.TransactionalAction.Run(Action action, Action commit, Action rollback) in dotnet.dll:token 0x6000923+0x19
   at Microsoft.DotNet.Workloads.Workload.Install.WorkloadInstallCommand.InstallWorkloadsWithInstallRecord(IEnumerable`1 workloadIds, SdkFeatureBand sdkFeatureBand) in dotnet.dll:token 0x60001cf+0xb5
   at Microsoft.DotNet.Workloads.Workload.Install.WorkloadInstallCommand.InstallWorkloads(IEnumerable`1 workloadIds, Boolean skipManifestUpdate) in dotnet.dll:token 0x60001ce+0x58
   at Microsoft.DotNet.Workloads.Workload.Install.WorkloadInstallCommand.Execute() in dotnet.dll:token 0x60001cb+0x216
   at Microsoft.DotNet.Cli.DotNetTopLevelCommandBase.RunCommand(String[] args) in dotnet.dll:token 0x60008af+0x5e
   at Microsoft.DotNet.Workloads.Workload.WorkloadCommand.Run(String[] args) in dotnet.dll:token 0x6000145+0x6
   at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient) in dotnet.dll:token 0x6000918+0x2e8
   at Microsoft.DotNet.Cli.Program.Main(String[] args) in dotnet.dll:token 0x6000916+0x6f

Issue Analytics

  • State:closed
  • Created 2 years ago
  • Reactions:5
  • Comments:8 (4 by maintainers)

github_iconTop GitHub Comments

marcpopMSFTcommented, Jun 2, 2021

This should be fixed in preview 5.

sfoslundcommented, May 26, 2021

I’ve found the issue, it’s related to Basically, the install fails because the blazor workload does not define a linux package alias for the Microsoft.NET.Runtime.Emscripten.Python pack in their manifest file. As a result, the installation is failing and while we try to roll back we get another failure, which results in this confusing message. All of these issues have been fixed in preview 5: Issue causing the install failure/ roll back failure (no linux alias specified): Logging improvement, for clearer error message:

For now with the buggy SDK version, the offending sections of the blazor manifest (sdk-manifests\6.0.100\Microsoft.NET.Workload.BlazorWebAssembly\WorkloadManifest.json) are:

    "Microsoft.NET.Runtime.Emscripten.Python" : {
      "kind": "Sdk",
      "version": "6.0.0-preview.4.21220.1",
      "alias-to": {
        "win-x86": "",
        "win-x64": "",
        "osx-x64": "Microsoft.NET.Runtime.Emscripten.2.0.12.Python.osx-x64"



So this issue can be worked around on linux by just removing these sections from the manifest file.

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