[iOS/tvOS] `System.Runtime.Tests` crash with signal 4

[kotlarmilos]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1072357&view=logs&j=7f49df26-8126-5de3-bf2f-6ac6bde01830&t=c62b6a8c-bf71-5057-7f45-9c355fe0b802
Build error leg or test failing: System.Runtime.Tests

Error Message

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

{
  "ErrorMessage": "Application 'net.dot.System.Runtime.Tests' terminated (with exit code '' and/or crashing signal '4).",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Logs:

[08:04:31] dbug: [08:04:22.9258080] 2025-06-14 05:04:23.009 System.Runtime.Tests[51169:174009368] 	[PASS] System.Tests.StringTests.NonRandomizedGetHashCode_EquivalentForStringAndSpan
[08:04:31] dbug: [08:04:22.9823520] 2025-06-14 05:04:23.065 System.Runtime.Tests[51169:174009368] 	[PASS] System.Tests.StringTests.NonRandomizedGetHashCode_EquivalentForStringAndSpan
[08:04:31] dbug: [08:04:23.0862410] 2025-06-14 05:04:23.168 System.Runtime.Tests[51169:174009368] 	[PASS] System.Tests.StringTests.NonRandomizedGetHashCode_EquivalentForStringAndSpan
[08:04:31] dbug: [08:04:23.1905250] 2025-06-14 05:04:23.274 System.Runtime.Tests[51169:174009368] 	[PASS] System.Tests.StringTests.NonRandomizedGetHashCode_EquivalentForStringAndSpan
[08:04:31] dbug: [08:04:23.2425390] Xamarin.Hosting: Process '51169' exited with exit code  or crashing signal 4.
[08:04:31] dbug: [08:04:23.2432150] Application 'net.dot.System.Runtime.Tests' terminated (with exit code '' and/or crashing signal '4).
[08:04:31] dbug: ==================== End of ApplicationLog ====================
[08:04:31] dbug: 
[08:04:31] dbug: ==================== SystemLog ====================
[08:04:31] dbug: Log file: /tmp/helix/working/A53F08DC/w/A54E08E9/uploads/device-DNCENGTVOS-006-20250614_080252.log

Changes in #116538 made the error visible on iOS/tvOS. The error code indicates an invalid CPU instruction.

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1072357
Error message validated: [Application 'net.dot.System.Runtime.Tests' terminated (with exit code '' and/or crashing signal '4).]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 6/19/2025 11:04:44 AM UTC

Report

Build	Definition	Test	Pull Request
1076972	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#105403
1076960	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116972
1076951	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116383
1076938	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116941
1076900	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116964
1076772	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116934
1076871	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116411
1076863	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116789
1076839	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#112924
1076809	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#115335
1076793	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116960
1076757	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#115766
1076741	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116881
1076738	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116945
1076729	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116634
1076670	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116848
1076652	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116741
1076534	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116634
1076566	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1076584	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116955
1076589	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#105403
1076517	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1076481	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116954
1076403	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#113956
1076459	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#105403
1076445	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116411
1076384	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116940
1076347	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116949
1076216	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116945
1076339	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#105403
1076206	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116319
1076259	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116947
1076174	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116943
1076242	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116903
1076194	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116930
1076147	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116941
1076114	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#105403
1076043	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1075813	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116925
1076071	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116934
1075755	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116659
1075943	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1075929	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116844
1075920	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116932
1075902	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116931
1075896	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116930
1075866	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116927
1075822	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116884
1075764	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116868
1071829	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116677
1075685	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116903
1075377	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116913
1075627	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116874
1075556	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116907
1075099	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#113956
1075570	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116732
1075557	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116910
1075546	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116772
1075512	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116543
1075473	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116745
1075411	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116914
1075424	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116848
1075415	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116915
1075369	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1075391	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116910
1071517	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116732
1075350	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116903
1075329	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074187	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116879
1075207	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116907
1075208	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116426
1075177	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116903
1075072	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1075031	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116902
1075063	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1075050	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116903
1074982	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074976	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074968	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116901
1074952	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116896
1074931	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116895
1074928	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116898
1074920	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#105403
1074907	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116895
1074872	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116881
1074888	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116782
1074839	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116795
1074824	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074810	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074805	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116830
1074683	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074675	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1074574	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116782
1074641	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116795
1074596	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#115443
1074602	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116874
1074440	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116771
1074437	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116771
1074384	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#116660
1074388	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#115443
Displaying 100 of 177 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
46	177	177

[dotnet-policy-service]

Tagging subscribers to 'os-ios': @vitek-karas, @kotlarmilos, @ivanpovazan, @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

[vitek-karas]

Possibly related to #116714 as well.