Mono interpreter Segmentation fault crashes

[MihaZupan]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1297521
Build error leg or test failing: ComInterfaceGenerator.Unit.Tests.WorkItemExecution
Pull request: #124517

Error Message

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

{
  "ErrorMessage": ["MONO_ENV_OPTIONS=--interpreter", "exit code 139 means SIGSEGV Illegal memory access. Deref invalid pointer, overrunning buffer, stack overflow etc. Core dumped."],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1297521
Error message validated: [MONO_ENV_OPTIONS=--interpreter exit code 139 means SIGSEGV Illegal memory access. Deref invalid pointer, overrunning buffer, stack overflow etc. Core dumped.]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/17/2026 7:18:11 PM UTC

Report

Build	Definition	Test	Pull Request
1299852	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124578
1298494	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124033
1298465	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124003
1298453	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124543
1298447	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124542
1298443	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124268
1298435	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#123033
1298400	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124483
1298395	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124540
1298368	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution
1297942	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124527
1298313	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124374
1298222	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#122526
1298190	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124485
1298154	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124532
1298071	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124352
1298057	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124374
1297976	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124524
1297967	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124271
1297928	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#119432
1297894	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#123744
1297854	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#123780
1297818	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution
1297770	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#119432
1297702	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124523
1297695	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#113299
1296797	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124491
1297658	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124268
1297640	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124521
1297622	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#123925
1297546	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#123377
1297541	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124483
1297521	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124517

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	33	33

[dotnet-policy-service]

Tagging subscribers to this area: @vitek-karas, @BrzVlad, @kotlarmilos
See info in area-owners.md if you want to be subscribed.

[MihuBot]

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

• ComInterfaceGenerator.Unit.Tests failed on linux-x64 running interpreter #100683

[BrzVlad]

This should be fixed by #124538