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[clr-interp] Stackoverflow on x64 #121631

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[clr-interp] Stackoverflow on x64#121631
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area-CodeGen-Interpreter-coreclruntriagedNew issue has not been triaged by the area owner
@rolfbjarne

Description

@rolfbjarne
rolfbjarne
opened on Nov 14, 2025

Description

This happens in our test suite:

Stack overflow.
Repeated 7349 times:
--------------------------------
   at System.Runtime.InteropServices.DynamicInterfaceCastableHelpers.GetInterfaceImplementation(System.Runtime.InteropServices.IDynamicInterfaceCastable, System.RuntimeType)
--------------------------------
   at Xamarin.Tests.AvailabilityExtensions.IsAvailable(System.Collections.Generic.IEnumerable`1<System.ValueTuple`3<System.Runtime.Versioning.OSPlatformAttribute,Xamarin.Utils.ApplePlatform,System.Version>>, Xamarin.Tests.PlatformInfo, Xamarin.Utils.ApplePlatform)
   at Xamarin.Tests.AvailabilityExtensions.IsAvailable(System.Collections.Generic.IEnumerable`1<System.Runtime.Versioning.OSPlatformAttribute>, Xamarin.Tests.PlatformInfo)
   at Xamarin.Tests.AvailabilityExtensions.IsAvailable(System.Reflection.ICustomAttributeProvider, Xamarin.Tests.PlatformInfo)
   at Xamarin.Tests.AvailabilityExtensions.IsAvailableOnHostPlatform(System.Reflection.ICustomAttributeProvider)
   at Introspection.ApiBaseTest.SkipDueToAttribute(System.Reflection.MemberInfo)
   at Introspection.ApiCMAttachmentTest.Skip(System.Type)
[...]

Reproduction Steps

Needs Xcode 26.1.1 installed in /Applications/Xcode_26.1.1.app.

$ git clone --recursive https://github.com/dotnet/macios
$ cd macios
$ git checkout dev/rolf/net11.0-coreclr
$ git reset --hard 0129a5d735b6ff4947c354e7ffa6233c6fa4a2c9
$ ./configure --disable-all-platforms --enable-maccatalyst
$ make all -j8
$ make install -j8
$ make build run-bare TEST_VARIATION=coreclr RID=maccatalyst-x64 -C tests/introspection/dotnet/MacCatalyst

Expected behavior

Successful test execution.

Actual behavior

Stack overflow. 
$ make build run-bare TEST_VARIATION=coreclr RID=maccatalyst-x64
Found ccache on the system, enabling it
Detected the macios-adr repository, automatically enabled the Xamarin build
2025-11-14 16:16:43.642 introspection[86919:4310425] Microsoft.MacCatalyst: Invalid IDE Port: -1
2025-11-14 16:16:47.496 introspection[86919:4309880] Queuing test loading on background thread
2025-11-14 16:16:47.503 introspection[86919:4310554] Loading tests on background thread
2025-11-14 16:16:47.580 introspection[86919:4310554] Loaded tests on background thread, queuing UI update on main thead
2025-11-14 16:16:47.907 introspection[86919:4309880] Updating UI on main thead
2025-11-14 16:16:48.089 introspection[86919:4309880] AutoRun ()
2025-11-14 16:16:48.089 introspection[86919:4309880] AutoRun (): queuing test run on main thread
2025-11-14 16:16:48.095 introspection[86919:4309880] AutoRun (): running tests on main thread
2025-11-14 16:16:48.129 introspection[86919:4309880] [Runner executing:	Run Everything]
2025-11-14 16:16:48.129 introspection[86919:4309880] [MonoTouch Version:	26.0.11017]
2025-11-14 16:16:48.130 introspection[86919:4309880] [Assembly:	Microsoft.MacCatalyst.dll (64 bits)]
2025-11-14 16:16:48.130 introspection[86919:4309880] [GC:	sgen]
2025-11-14 16:16:48.130 introspection[86919:4309880] [iPad:	iPadOS v18.7]
2025-11-14 16:16:48.130 introspection[86919:4309880] [Device Name:	iPad]
2025-11-14 16:16:48.131 introspection[86919:4309880] [Device UDID:	unknown]
2025-11-14 16:16:48.158 introspection[86919:4309880] [Device Locale:	en_US@rg=eszzzz]
2025-11-14 16:16:48.160 introspection[86919:4309880] [Device Date/Time:	11/14/2025 4:16:48 PM]
2025-11-14 16:16:48.161 introspection[86919:4309880] [Bundle:	com.xamarin.introspection]
2025-11-14 16:16:48.171 introspection[86919:4310580] introspection
2025-11-14 16:16:48.175 introspection[86919:4310580] Introspection
2025-11-14 16:16:48.175 introspection[86919:4310580] Introspection.ApiCMAttachmentTest
2025-11-14 16:16:48.298 introspection[86919:4310580] 	[PASS] CheckAttachments
Stack overflow.
Repeated 59038 times:
--------------------------------
   at System.Runtime.InteropServices.DynamicInterfaceCastableHelpers.GetInterfaceImplementation(System.Runtime.InteropServices.IDynamicInterfaceCastable, System.RuntimeType)
--------------------------------
   at Xamarin.Tests.AvailabilityExtensions.IsAvailable(System.Collections.Generic.IEnumerable`1<System.ValueTuple`3<System.Runtime.Versioning.OSPlatformAttribute,Xamarin.Utils.ApplePlatform,System.Version>>, Xamarin.Tests.PlatformInfo, Xamarin.Utils.ApplePlatform)
   at Xamarin.Tests.AvailabilityExtensions.IsAvailable(System.Collections.Generic.IEnumerable`1<System.Runtime.Versioning.OSPlatformAttribute>, Xamarin.Tests.PlatformInfo)
   at Xamarin.Tests.AvailabilityExtensions.IsAvailable(System.Reflection.ICustomAttributeProvider, Xamarin.Tests.PlatformInfo)
   at Xamarin.Tests.AvailabilityExtensions.IsAvailableOnHostPlatform(System.Reflection.ICustomAttributeProvider)
   at Introspection.ApiBaseTest.SkipDueToAttribute(System.Reflection.MemberInfo)
   at Introspection.ApiCMAttachmentTest.Skip(System.Type)
   at Introspection.ApiCMAttachmentTest.CheckFailAttachments()
   at System.RuntimeMethodHandle.InvokeMethod(System.Object, Void**, System.Signature, Boolean)
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(System.Object, IntPtr*)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(System.Object, System.Reflection.BindingFlags)
   at System.Reflection.RuntimeMethodInfo.Invoke(System.Object, System.Reflection.BindingFlags, System.Reflection.Binder, System.Object[], System.Globalization.CultureInfo)
   at System.Reflection.MethodBase.Invoke(System.Object, System.Object[])
   at NUnit.Framework.Internal.Reflect.InvokeMethod(System.Reflection.MethodInfo, System.Object, System.Object[])
   at NUnit.Framework.Internal.MethodWrapper.Invoke(System.Object, System.Object[])
   at NUnit.Framework.Internal.Commands.TestMethodCommand.InvokeTestMethod(NUnit.Framework.Internal.TestExecutionContext)
   at NUnit.Framework.Internal.Commands.TestMethodCommand.RunTestMethod(NUnit.Framework.Internal.TestExecutionContext)
   at NUnit.Framework.Internal.Commands.TestMethodCommand.Execute(NUnit.Framework.Internal.TestExecutionContext)
   at NUnit.Framework.Internal.Execution.SimpleWorkItem.PerformWork()
   at NUnit.Framework.Internal.Execution.WorkItem.RunOnCurrentThread()
   at NUnit.Framework.Internal.Execution.WorkItem.Execute()
   at NUnit.Framework.Internal.Execution.MainThreadWorkItemDispatcher.Dispatch(NUnit.Framework.Internal.Execution.WorkItem)
   at NUnit.Framework.Internal.Execution.CompositeWorkItem.RunChildren()
   at NUnit.Framework.Internal.Execution.CompositeWorkItem.PerformWork()
   at NUnit.Framework.Internal.Execution.WorkItem.RunOnCurrentThread()
   at NUnit.Framework.Internal.Execution.WorkItem.Execute()
   at NUnit.Framework.Internal.Execution.MainThreadWorkItemDispatcher.Dispatch(NUnit.Framework.Internal.Execution.WorkItem)
   at NUnit.Framework.Internal.Execution.CompositeWorkItem.RunChildren()
   at NUnit.Framework.Internal.Execution.CompositeWorkItem.PerformWork()
   at NUnit.Framework.Internal.Execution.WorkItem.RunOnCurrentThread()
   at NUnit.Framework.Internal.Execution.WorkItem.Execute()
   at NUnit.Framework.Internal.Execution.MainThreadWorkItemDispatcher.Dispatch(NUnit.Framework.Internal.Execution.WorkItem)
   at NUnit.Framework.Internal.Execution.CompositeWorkItem.RunChildren()
   at NUnit.Framework.Internal.Execution.CompositeWorkItem.PerformWork()
   at NUnit.Framework.Internal.Execution.WorkItem.RunOnCurrentThread()
   at NUnit.Framework.Internal.Execution.WorkItem.Execute()
   at NUnit.Framework.Internal.Execution.MainThreadWorkItemDispatcher.Dispatch(NUnit.Framework.Internal.Execution.WorkItem)
   at NUnit.Framework.Internal.Execution.MainThreadWorkItemDispatcher.Start(NUnit.Framework.Internal.Execution.WorkItem)
   at NUnit.Framework.Api.NUnitTestAssemblyRunner.StartRun(NUnit.Framework.Interfaces.ITestListener)
   at NUnit.Framework.Api.NUnitTestAssemblyRunner+<>c__DisplayClass38_0.<RunAsync>b__0()
   at NUnit.Framework.Api.NUnitTestAssemblyRunner.WrapInNUnitCallContext(System.Action)
   at NUnit.Framework.Api.NUnitTestAssemblyRunner.RunAsync(NUnit.Framework.Interfaces.ITestListener, NUnit.Framework.Interfaces.ITestFilter)
   at NUnit.Framework.Api.NUnitTestAssemblyRunner.Run(NUnit.Framework.Interfaces.ITestListener, NUnit.Framework.Interfaces.ITestFilter)
   at MonoTouch.NUnit.UI.BaseTouchRunner.Run(NUnit.Framework.Internal.Test)
   at MonoTouch.NUnit.UI.BaseTouchRunner.Run()
   at MonoTouch.NUnit.UI.BaseTouchRunner.<AutoRun>b__49_0()
   at MonoTouch.NUnit.UI.TouchRunner+<>c__DisplayClass19_0.<ExecuteOnMainThread>b__0()
   at Foundation.NSAsyncActionDispatcher.Apply()
   at System.RuntimeMethodHandle.InvokeMethod(System.Object, Void**, System.Signature, Boolean)
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(System.Object, IntPtr*)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(System.Object, System.Reflection.BindingFlags)
   at System.Reflection.RuntimeMethodInfo.Invoke(System.Object, System.Reflection.BindingFlags, System.Reflection.Binder, System.Object[], System.Globalization.CultureInfo)
   at ObjCRuntime.Runtime.InvokeMethod(System.Reflection.MethodBase, System.Object, IntPtr)
   at ObjCRuntime.Runtime.InvokeMethod(MonoObject*, MonoObject*, IntPtr)
   at ObjCRuntime.Runtime.bridge_runtime_invoke_method(MonoObject*, MonoObject*, IntPtr, IntPtr*)
   at UIKit.UIApplication.UIApplicationMain(Int32, System.String[], IntPtr, IntPtr)
   at UIKit.UIApplication.Main(System.String[], System.Type, System.Type)
   at MainClass.Main(System.String[])
make: *** [run-bare] Abort trap: 6

Regression?

No

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No response

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