Occasional crashes in System.Net.Sockets.Tests on Alpine 3.15

[antonfirsov]

We see rare crashes of System.Net.Sockets.Tests on Alpine 3.15 because of a SocketException (22): Invalid argument being thrown from a continuation callback invoked from SocketAsyncEngine / SocketAsyncContext:

https://helixre107v0xdcypoyl9e7f.blob.core.windows.net/dotnet-runtime-refs-heads-main-272f116de4bf4fea9f/System.Net.Sockets.Tests/1/console.48b03307.log?helixlogtype=result

Starting:    System.Net.Sockets.Tests (parallel test collections = on, max threads = 2)
Unhandled exception. System.Net.Sockets.SocketException (22): Invalid argument
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError error, Boolean forAsyncThrow) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1297
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.AcceptAsync(Socket socket, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 978
   at System.Net.Sockets.Socket.AcceptAsync(Socket acceptSocket, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 70
   at System.Net.Sockets.Socket.AcceptAsync() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 32
   at System.Net.Sockets.Socket.BeginAccept(AsyncCallback callback, Object state) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2505
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 82
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 185
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 702
   at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 3452
   at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:line 398
   at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/ValueTask.cs:line 665
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.OnCompleted(SocketAsyncEventArgs _) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 959
   at System.Net.Sockets.SocketAsyncEventArgs.OnCompletedInternal() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.cs:line 210
   at System.Net.Sockets.SocketAsyncEventArgs.FinishOperationAsyncSuccess(Int32 bytesTransferred, SocketFlags flags) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.cs:line 983
   at System.Net.Sockets.SocketAsyncEventArgs.CompletionCallback(Int32 bytesTransferred, SocketFlags flags, SocketError socketError) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.Unix.cs:line 376
   at System.Net.Sockets.SocketAsyncEventArgs.AcceptCompletionCallback(IntPtr acceptedFileDescriptor, Byte[] socketAddress, Int32 socketAddressSize, SocketError socketError) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.Unix.cs:line 30
   at System.Net.Sockets.SocketAsyncContext.AcceptOperation.InvokeCallback(Boolean allowPooling) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 616
   at System.Net.Sockets.SocketAsyncContext.OperationQueue`1.ProcessAsyncOperation(TOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 973
   at System.Net.Sockets.SocketAsyncContext.ProcessAsyncReadOperation(ReadOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1382
   at System.Net.Sockets.SocketAsyncContext.ReadOperation.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 341
   at System.Net.Sockets.SocketAsyncContext.AsyncOperation.Process() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 292
   at System.Net.Sockets.SocketAsyncContext.HandleEvents(SocketEvents events) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 2187
   at System.Net.Sockets.SocketAsyncEngine.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEngine.Unix.cs:line 242
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 919
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 58
--- End of stack trace from previous location ---
   at System.Threading.Tasks.TaskToAsyncResult.End[TResult](IAsyncResult asyncResult) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 61
   at System.Net.Sockets.Socket.EndAccept(IAsyncResult asyncResult) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2507
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 52
   at System.Threading.Tasks.TaskToAsyncResult.TaskAsyncResult..ctor(Task task, Object state, AsyncCallback callback) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 144
   at System.Threading.Tasks.TaskToAsyncResult.Begin(Task task, AsyncCallback callback, Object state) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 43
   at System.Net.Sockets.Socket.BeginAccept(AsyncCallback callback, Object state) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2505
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 82
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 185
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 209
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 702
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 1929
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 919
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 58

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Issue Details

---

We see rare crashes of System.Net.Sockets.Tests on Alpine 3.15 because of a SocketException (22): Invalid argument being thrown from a continuation callback invoked from SocketAsyncEngine / SocketAsyncContext:

https://helixre107v0xdcypoyl9e7f.blob.core.windows.net/dotnet-runtime-refs-heads-main-272f116de4bf4fea9f/System.Net.Sockets.Tests/1/console.48b03307.log?helixlogtype=result

Starting:    System.Net.Sockets.Tests (parallel test collections = on, max threads = 2)
Unhandled exception. System.Net.Sockets.SocketException (22): Invalid argument
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError error, Boolean forAsyncThrow) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1297
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.AcceptAsync(Socket socket, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 978
   at System.Net.Sockets.Socket.AcceptAsync(Socket acceptSocket, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 70
   at System.Net.Sockets.Socket.AcceptAsync() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 32
   at System.Net.Sockets.Socket.BeginAccept(AsyncCallback callback, Object state) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2505
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 82
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 185
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 702
   at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 3452
   at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:line 398
   at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/ValueTask.cs:line 665
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.OnCompleted(SocketAsyncEventArgs _) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 959
   at System.Net.Sockets.SocketAsyncEventArgs.OnCompletedInternal() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.cs:line 210
   at System.Net.Sockets.SocketAsyncEventArgs.FinishOperationAsyncSuccess(Int32 bytesTransferred, SocketFlags flags) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.cs:line 983
   at System.Net.Sockets.SocketAsyncEventArgs.CompletionCallback(Int32 bytesTransferred, SocketFlags flags, SocketError socketError) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.Unix.cs:line 376
   at System.Net.Sockets.SocketAsyncEventArgs.AcceptCompletionCallback(IntPtr acceptedFileDescriptor, Byte[] socketAddress, Int32 socketAddressSize, SocketError socketError) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.Unix.cs:line 30
   at System.Net.Sockets.SocketAsyncContext.AcceptOperation.InvokeCallback(Boolean allowPooling) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 616
   at System.Net.Sockets.SocketAsyncContext.OperationQueue`1.ProcessAsyncOperation(TOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 973
   at System.Net.Sockets.SocketAsyncContext.ProcessAsyncReadOperation(ReadOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1382
   at System.Net.Sockets.SocketAsyncContext.ReadOperation.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 341
   at System.Net.Sockets.SocketAsyncContext.AsyncOperation.Process() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 292
   at System.Net.Sockets.SocketAsyncContext.HandleEvents(SocketEvents events) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 2187
   at System.Net.Sockets.SocketAsyncEngine.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEngine.Unix.cs:line 242
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 919
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 58
--- End of stack trace from previous location ---
   at System.Threading.Tasks.TaskToAsyncResult.End[TResult](IAsyncResult asyncResult) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 61
   at System.Net.Sockets.Socket.EndAccept(IAsyncResult asyncResult) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2507
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 52
   at System.Threading.Tasks.TaskToAsyncResult.TaskAsyncResult..ctor(Task task, Object state, AsyncCallback callback) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 144
   at System.Threading.Tasks.TaskToAsyncResult.Begin(Task task, AsyncCallback callback, Object state) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 43
   at System.Net.Sockets.Socket.BeginAccept(AsyncCallback callback, Object state) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2505
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 82
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 185
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 209
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 702
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 1929
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 919
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 58

Author:	antonfirsov
Assignees:	-
Labels:	area-System.Net.Sockets
Milestone:	8.0.0

[rzikm]

I had a quick look in the crash dump and I could not find useful info (such as which test caused it). Some parts of the heap are inaccessible (dotnet-dump kept crashing) and there is no reference to a test state machine in the thread callstack :/

[antonfirsov]

This comes from SocketTestServerAPM which is only used by some test cases in DnsEndPointTest. What SocketTestServerAPM does is to enforce APM API-s for the listener/server socket, which makes no sense to me from DNS testing POV -- the server is not the SUT there.

IMO it's very unlikely that we have a production bug here. If we don't want to bother to understand why is SocketTestServerAPM hitting an SocketException (22): Invalid argument, we could just simplify DnsEndPointTest and get rid of SocketTestServerAPM entirely.

[wfurt]

man page documents this for accept:

       EINVAL Socket is not listening for connections, or addrlen is invalid (e.g., is negative).
       EINVAL (accept4()) invalid value in flags.

it may be interesting to dump the related Socket state.

[liveans]

Similar crash on Debian.11.Arm32.Open too.
Helix Log

Unhandled exception. System.Net.Sockets.SocketException (22): Invalid argument
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError error, Boolean forAsyncThrow) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1387
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.AcceptAsync(Socket socket, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1050
   at System.Net.Sockets.Socket.AcceptAsync(Socket acceptSocket, CancellationToken cancellationToken) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 70
   at System.Net.Sockets.Socket.AcceptAsync() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 32
   at System.Net.Sockets.Socket.BeginAccept(AsyncCallback callback, Object state) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2591
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 82
   at System.Threading.Tasks.TaskToAsyncResult.TaskAsyncResult.<.ctor>b__2_0() in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 154
   at System.Threading.Tasks.AwaitTaskContinuation.<>c.<.cctor>b__17_0(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 670
   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.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 702
   at System.Threading.Tasks.AwaitTaskContinuation.Run(Task task, Boolean canInlineContinuationTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 572
   at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 3468
   at System.Threading.Tasks.Task`1.TrySetResult(TResult result) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Future.cs:line 398
   at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/ValueTask.cs:line 665
   at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.SignalCompletion() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Sources/ManualResetValueTaskSourceCore.cs:line 235
   at System.Threading.Tasks.Sources.ManualResetValueTaskSourceCore`1.SetResult(TResult result) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Sources/ManualResetValueTaskSourceCore.cs:line 68
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.OnCompleted(SocketAsyncEventArgs _) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.Tasks.cs:line 1031
   at System.Net.Sockets.SocketAsyncEventArgs.OnCompletedInternal() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.cs:line 210
   at System.Net.Sockets.SocketAsyncEventArgs.FinishOperationAsyncSuccess(Int32 bytesTransferred, SocketFlags flags) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.cs:line 981
   at System.Net.Sockets.SocketAsyncEventArgs.CompletionCallback(Int32 bytesTransferred, SocketFlags flags, SocketError socketError) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.Unix.cs:line 382
   at System.Net.Sockets.SocketAsyncEventArgs.AcceptCompletionCallback(IntPtr acceptedFileDescriptor, Memory`1 socketAddress, SocketError socketError) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEventArgs.Unix.cs:line 30
   at System.Net.Sockets.SocketAsyncContext.AcceptOperation.InvokeCallback(Boolean allowPooling) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 647
   at System.Net.Sockets.SocketAsyncContext.OperationQueue`1.ProcessAsyncOperation(TOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1004
   at System.Net.Sockets.SocketAsyncContext.ProcessAsyncReadOperation(ReadOperation op) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 1413
   at System.Net.Sockets.SocketAsyncContext.ReadOperation.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 340
   at System.Net.Sockets.SocketAsyncContext.AsyncOperation.Process() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 291
   at System.Net.Sockets.SocketAsyncContext.HandleEvents(SocketEvents events) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncContext.Unix.cs:line 2197
   at System.Net.Sockets.SocketAsyncEngine.System.Threading.IThreadPoolWorkItem.Execute() in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/SocketAsyncEngine.Unix.cs:line 242
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 913
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 58
   at System.Threading.Thread.StartCallback() in /_/src/coreclr/System.Private.CoreLib/src/System/Threading/Thread.CoreCLR.cs:line 105
--- End of stack trace from previous location ---
   at System.Threading.Tasks.TaskToAsyncResult.End[TResult](IAsyncResult asyncResult) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 61
   at System.Net.Sockets.Socket.EndAccept(IAsyncResult asyncResult) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2593
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 52
   at System.Threading.Tasks.TaskToAsyncResult.TaskAsyncResult..ctor(Task task, Object state, AsyncCallback callback) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 144
   at System.Threading.Tasks.TaskToAsyncResult.Begin(Task task, AsyncCallback callback, Object state) in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 43
   at System.Net.Sockets.Socket.BeginAccept(AsyncCallback callback, Object state) in /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs:line 2591
   at System.Net.Sockets.Tests.SocketTestServerAPM.OnAccept(IAsyncResult result) in /_/src/libraries/Common/tests/System/Net/Sockets/SocketTestServerAPM.cs:line 82
   at System.Threading.Tasks.TaskToAsyncResult.TaskAsyncResult.<.ctor>b__2_0() in /_/src/libraries/Common/src/System/Threading/Tasks/TaskToAsyncResult.cs:line 154
   at System.Threading.Tasks.AwaitTaskContinuation.<>c.<.cctor>b__17_0(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 670
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 179
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs:line 203
   at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/TaskContinuation.cs:line 702
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state) in /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs:line 1929
   at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 1266
   at System.Threading.ThreadPoolWorkQueue.Dispatch() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/ThreadPoolWorkQueue.cs:line 913
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in /_/src/libraries/System.Private.CoreLib/src/System/Threading/PortableThreadPool.WorkerThread.NonBrowser.cs:line 58
   at System.Threading.Thread.StartCallback() in /_/src/coreclr/System.Private.CoreLib/src/System/Threading/Thread.CoreCLR.cs:line 105
Fatal error. Internal CLR error. (0x80131506)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Threading.Tasks.Task+<>c.<ThrowAsync>b__128_1(System.Object)
   at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool+WorkerThread.WorkerThreadStart()
   at System.Threading.Thread.StartCallback()
./RunTests.sh: line 168:    21 Aborted                 (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Net.Sockets.Tests.runtimeconfig.json --depsfile 

[danmoseley]

Regardless, if dotnet dump crashes it would be good to have a big open on that.

[wfurt]

do you remember @rzikm @antonfirsov if the original issue was x64 or arm?

[rzikm]

I believe it was ARM