SocketException 'Connection reset by peer' causing test failures on android_arm64 and android_x64

[matouskozak]

Note: This issue was automatically generated by AI-Test-Triage. Please review and triage accordingly.

Build Information

Build: 20251211.4, 20251214.1, 20251216.1, 20251216.2

Build error leg or test failing: System.Net.Sockets.Tests.WorkItemExecution

Affected CI jobs: android_arm64_Release_NativeAOT, android_x64_Release_NativeAOT

Causing Commit Range Information

Commit range: Flaky/Intermittent (no stable transition found)

Summary

• Test failures caused by System.Net.Sockets.SocketException 'Connection reset by peer' during socket connect
• Failures occur in System.Net.Sockets.Tests suite on android_arm64_Release_NativeAOT and android_x64_Release_NativeAOT jobs
• Single test failures with connection reset errors observed in multi-connect and argument validation tests
• Test processes exit with code 1 indicating failure; one instance includes process killed by OS signal 9
• No infrastructure timeouts or crashes reported; failures linked to socket connection resets on Android platforms

Failure Statistics

Note: These statistics are based on the configured time range and do not contain full test history.

• Occurrence Count: 5
• First Failure: 2025-12-11 21:00:00 UTC
• Last Failure: 2025-12-16 21:00:00 UTC

Work Items

Work Item	Console Log	Build	Job Name
System.Net.Sockets.Tests	View Extract 12-11 14:58:53.992 25858 25882 I DOTNET : [FAIL] System.Net.Sockets.Tests.ConnectSyncForceNonBlocking.MultiConnect_LingerState_Preserved(dnsConnect: True) 12-11 14:58:53.992 25858 25882 I DOTNET : System.Net.Sockets.SocketException : Connection reset by peer [::ffff:127.0.0.1]:38615 12-11 14:58:53.992 25858 25882 I DOTNET : at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) + 0x238 12-11 14:58:53.992 25858 25882 I DOTNET : at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) + 0x150 12-11 14:58:53.992 25858 25882 I DOTNET : at System.Net.Sockets.Socket.Connect(IPAddress[] addresses, Int32 port) + 0x114 ... 12-11 14:59:01.904 1040 1040 I Zygote : Process 25858 exited due to signal 9 (Killed) 12-11 14:59:01.810 25858 25882 I DOTNET : Tests run: 2279, Errors: 0, Failures: 1, Skipped: 28. Time: 13.1907361s 12-11 14:59:01.811 25858 25877 I DOTNET : MonoRunner finished, return-code=1 Full Log	20251211.4	android_arm64_Release_NativeAOT
System.Net.Sockets.Tests	View Extract 12-11 23:16:37.136 3931 3954 I DOTNET : [FAIL] System.Net.Sockets.Tests.ArgumentValidation.SelectPoll_InfiniteTimeSpan_Ok 12-11 23:16:37.136 3931 3954 I DOTNET : System.Net.Sockets.SocketException : Connection reset by peer 127.0.0.1:38893 12-11 23:16:37.136 3931 3954 I DOTNET : at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) + 0x1f6 12-11 23:16:37.136 3931 3954 I DOTNET : at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) + 0x149 12-11 23:16:37.136 3931 3954 I DOTNET : at System.Net.Sockets.Tests.ArgumentValidation.SelectPoll_InfiniteTimeSpan_Ok() + 0x10b 12-11 23:16:37.136 3931 3954 I DOTNET : at libSystem.Net.Sockets.Tests!<BaseAddress>+0x16209a3 12-11 23:17:26.235 3931 3954 I DOTNET : Tests run: 2279, Errors: 0, Failures: 1, Skipped: 28. Time: 54.1153283s 12-11 23:17:26.236 3931 3949 I DOTNET : MonoRunner finished, return-code=1 [23:17:29] fail: Non-success instrumentation exit code: 1, expected: 0 Full Log	20251211.4	android_x64_Release_NativeAOT
System.Net.Sockets.Tests	View Extract 12-14 02:55:59.926 25223 25254 I DOTNET : [FAIL] System.Net.Sockets.Tests.ConnectTask.MultiConnect_MiscProperties_Preserved(dnsConnect: False) 12-14 02:55:59.926 25223 25254 I DOTNET : System.Net.Sockets.SocketException : Connection reset by peer 12-14 02:55:59.926 25223 25254 I DOTNET : at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) + 0x40 12-14 02:55:59.926 25223 25254 I DOTNET : at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) + 0x5c 12-14 02:55:59.926 25223 25254 I DOTNET : at System.Net.Sockets.Socket.<<ConnectAsync>g__Core|293_0>d.MoveNext() + 0x208 12-14 02:55:59.926 25223 25254 I DOTNET : --- End of stack trace from previous location --- Full Log	20251214.1	android_arm64_Release_NativeAOT
System.Net.Sockets.Tests	View Extract 12-16 14:53:04.999 8860 8884 I DOTNET : [FAIL] System.Net.Sockets.Tests.ConnectCancellableTask.Connect_ExposeHandle_FirstAttemptSucceeds(connectMode: "dns") 12-16 14:53:04.999 8860 8884 I DOTNET : System.Net.Sockets.SocketException : Connection reset by peer 12-16 14:53:04.999 8860 8884 I DOTNET : at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) + 0x40 12-16 14:53:04.999 8860 8884 I DOTNET : at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) + 0x5c 12-16 14:53:04.999 8860 8884 I DOTNET : at System.Threading.Tasks.ValueTask.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state) + 0x7c 12-16 14:53:04.999 8860 8884 I DOTNET : --- End of stack trace from previous location --- Full Log	20251216.2	android_arm64_Release_NativeAOT
System.Net.Sockets.Tests	View Extract 12-16 02:57:23.136 6942 6969 I DOTNET : [FAIL] System.Net.Sockets.Tests.ConnectSyncForceNonBlocking.MultiConnect_MiscProperties_Preserved(dnsConnect: True) 12-16 02:57:23.136 6942 6969 I DOTNET : System.Net.Sockets.SocketException : Connection reset by peer [::ffff:127.0.0.1]:42173 12-16 02:57:23.208 6942 6969 I DOTNET : at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) + 0x238 12-16 02:57:23.208 6942 6969 I DOTNET : at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) + 0x150 12-16 02:57:23.208 6942 6969 I DOTNET : at System.Net.Sockets.Socket.Connect(IPAddress[] addresses, Int32 port) + 0x114 12-16 02:57:23.208 6942 6969 I DOTNET : --- End of stack trace from previous location --- Full Log	20251216.1	android_arm64_Release_NativeAOT

Error Message

{
  "ErrorMessage": "System.Net.Sockets.SocketException : Connection reset by peer",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Summary

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

Report

Build	Definition	Test	Pull Request
1241816	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1241708	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1241252	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1239671	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1239576	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1239235	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1239061	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1238469	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1237889	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1237300	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1237195	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1237105	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1236152	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1234598	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1233488	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1232841	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1231039	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	5	17

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[MihuBot]

I'm a bot. Here is a possible related and/or duplicate issue (I may be wrong):

• [naot][android] Test failure in ArgumentValidation.SelectPoll_InfiniteTimeSpan_Ok #121717