Assert in NetEventSource - IsEnabled() - failed while running System.Net.NameResolution.Functional.Tests (8.0)

[ericstj]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1065244
Build error leg or test failing: System.Net.NameResolution.Functional.Tests.WorkItemExecution
Pull request: #116550

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": ["Process terminated. Assertion failed.", "at System.Net.NetEventSource.Info("],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

@MihaZupan this looks similar to #92793 which you fixed.

https://helixr1107v0xd1eu3ibi6ka.blob.core.windows.net/dotnet-runtime-refs-pull-116550-merge-8bea864bce554aed82/System.Net.NameResolution.Functional.Tests/1/console.d8a5beb2.log?helixlogtype=result

Stack:

Process terminated. Assertion failed.
   at System.Diagnostics.DebugProvider.Fail(String message, String detailMessage) in /_/src/libraries/System.Private.CoreLib/src/System/Diagnostics/DebugProvider.cs:line 22
   at System.Diagnostics.Debug.Fail(String message, String detailMessage) in /_/src/libraries/System.Private.CoreLib/src/System/Diagnostics/Debug.cs:line 133
   at System.Diagnostics.Debug.Assert(Boolean condition, String message, String detailMessage) in /_/src/libraries/System.Private.CoreLib/src/System/Diagnostics/Debug.cs:line 97
   at System.Diagnostics.Debug.Assert(Boolean condition) in /_/src/libraries/System.Private.CoreLib/src/System/Diagnostics/Debug.cs:line 82
   at System.Net.NetEventSource.Info(String thisOrContextObject, String memberName, String message) in /_/src/libraries/Common/src/System/Net/Logging/NetEventSource.Common.cs:line 80
   at System.Net.NetEventSource.Info(Object thisOrContextObject, FormattableString formattableString, String memberName) in /_/src/libraries/Common/src/System/Net/Logging/NetEventSource.Common.cs:line 67
   at System.Net.Dns.<>c.<GetHostEntryAsync>b__6_0(Task`1 t, Object s) in /_/src/libraries/System.Net.NameResolution/src/System/Net/Dns.cs:line 126
   at System.Threading.Tasks.ContinuationTaskFromResultTask`1[[System.Net.IPHostEntry, System.Net.NameResolution, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]].InnerInvoke() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 140
   at System.Threading.Tasks.Task.<>c.<.cctor>b__281_0(Object obj) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2387
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 179
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2345
   at System.Threading.Tasks.Task.ExecuteEntryUnsafe(Thread threadPoolThread) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2283
   at System.Threading.Tasks.ThreadPoolTaskScheduler.TryExecuteTaskInline(Task task, Boolean taskWasPreviouslyQueued) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/ThreadPoolTaskScheduler.cs:line 77
   at System.Threading.Tasks.TaskScheduler.TryRunInline(Task task, Boolean taskWasPreviouslyQueued) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskScheduler.cs:line 190
   at System.Threading.Tasks.TaskContinuation.InlineIfPossibleOrElseQueue(Task task, Boolean needsProtection) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 235
   at System.Threading.Tasks.ContinueWithTaskContinuation.Run(Task completedTask, Boolean canInlineContinuationTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 326
   at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 3593
   at System.Threading.Tasks.Task.FinishContinuations() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 3453
   at System.Threading.Tasks.Task.FinishStageThree() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2137
   at System.Threading.Tasks.Task.FinishStageTwo() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2107
   at System.Threading.Tasks.Task.Finish(Boolean userDelegateExecute) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 1984
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2362
   at System.Threading.Tasks.Task.ExecuteEntryUnsafe(Thread threadPoolThread) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2283
   at System.Threading.Tasks.Task.ExecuteFromThreadPool(Thread threadPoolThread) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 2274
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 1010
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 102
   at System.Threading.Thread.StartCallback() in /_/src/mono/System.Private.CoreLib/src/System/Threading/Thread.Mono.cs:line 222

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1065244
Error message validated: [Process terminated. Assertion failed. at System.Net.NetEventSource.Info(]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 6/12/2025 9:31:10 PM UTC

Report

Build	Definition	Test	Pull Request
1065244	dotnet/runtime	System.Net.NameResolution.Functional.Tests.WorkItemExecution	#116550

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	1	1

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[MihaZupan]

Took me a second to realize this happened on an 8.0 branch.
Yes, this is the same issue, we just fixed the test in 9.0.