Runtime_133587 SIGSEGV in mono

## Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1595957
Build error leg or test failing: Regression_ro_2.WorkItemExecution

## Error Message

Fill the error message using [step by step known issues guidance](https://dev.azure.com/dnceng/internal/_git/dotnet-build-insights?path=/docs/build-insights.md&version=GBmain&_a=preview#known-issues).

```json
{
"ErrorPattern": "mono_dump_native_crash_info",
"BuildRetry": false,
"ExcludeConsoleLog": false
}
```

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1595957
**Error message validated:** `[mono_dump_native_crash_info`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 9/14/2026 8:00:22 PM UTC

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1597084](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597084)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597084&view=ms.vss-test-web.build-test-results-tab&runId=44111622&resultId=100000)|dotnet/runtime#132744|
|[1597532](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597532)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597532&view=ms.vss-test-web.build-test-results-tab&runId=44106890&resultId=100000)|dotnet/runtime#132572|
|[1597563](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597563)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597563&view=ms.vss-test-web.build-test-results-tab&runId=44105742&resultId=102657)|dotnet/runtime#133046|
|[1597064](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597064)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597064&view=ms.vss-test-web.build-test-results-tab&runId=44103924&resultId=100000)|dotnet/runtime#133934|
|[1597549](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597549)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597549&view=ms.vss-test-web.build-test-results-tab&runId=44103698&resultId=102918)|dotnet/runtime#132448|
|[1597497](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597497)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597497&view=ms.vss-test-web.build-test-results-tab&runId=44103318&resultId=102254)|dotnet/runtime#133696|
|[1597359](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597359)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597359&view=ms.vss-test-web.build-test-results-tab&runId=44100034&resultId=102940)|dotnet/runtime#133606|
|[1597361](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597361)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597361&view=ms.vss-test-web.build-test-results-tab&runId=44099730&resultId=102918)|dotnet/runtime#133941|
|[1597340](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597340)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597340&view=ms.vss-test-web.build-test-results-tab&runId=44099350&resultId=102940)|dotnet/runtime#133940|
|[1597217](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597217)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597217&view=ms.vss-test-web.build-test-results-tab&runId=44095898&resultId=102918)|dotnet/runtime#133877|
|[1597187](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597187)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597187&view=ms.vss-test-web.build-test-results-tab&runId=44095254&resultId=102918)|dotnet/runtime#133606|
|[1597138](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597138)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597138&view=ms.vss-test-web.build-test-results-tab&runId=44092990&resultId=102918)||
|[1597091](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597091)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597091&view=ms.vss-test-web.build-test-results-tab&runId=44091240&resultId=102918)|dotnet/runtime#133932|
|[1597042](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597042)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597042&view=ms.vss-test-web.build-test-results-tab&runId=44088428&resultId=102020)|dotnet/runtime#133921|
|[1596986](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596986)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596986&view=ms.vss-test-web.build-test-results-tab&runId=44086982&resultId=102942)||
|[1596948](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596948)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596948&view=ms.vss-test-web.build-test-results-tab&runId=44086426&resultId=102918)|dotnet/runtime#133655|
|[1596956](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596956)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596956&view=ms.vss-test-web.build-test-results-tab&runId=44086262&resultId=102918)|dotnet/runtime#133776|
|[1596890](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596890)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596890&view=ms.vss-test-web.build-test-results-tab&runId=44084830&resultId=102950)|dotnet/runtime#133046|
|[1596845](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596845)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596845&view=ms.vss-test-web.build-test-results-tab&runId=44084728&resultId=102918)|dotnet/runtime#133662|
|[1596873](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596873)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596873&view=ms.vss-test-web.build-test-results-tab&runId=44084678&resultId=102940)|dotnet/runtime#133921|
|[1596842](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596842)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596842&view=ms.vss-test-web.build-test-results-tab&runId=44084632&resultId=102918)|dotnet/runtime#133659|
|[1596881](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596881)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596881&view=ms.vss-test-web.build-test-results-tab&runId=44084610&resultId=102918)|dotnet/runtime#132827|
|[1596844](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596844)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596844&view=ms.vss-test-web.build-test-results-tab&runId=44083288&resultId=102918)|dotnet/runtime#133658|
|[1596836](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596836)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596836&view=ms.vss-test-web.build-test-results-tab&runId=44083122&resultId=102918)|dotnet/runtime#133924|
|[1596797](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596797)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596797&view=ms.vss-test-web.build-test-results-tab&runId=44081940&resultId=102918)|dotnet/runtime#133825|
|[1596791](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596791)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596791&view=ms.vss-test-web.build-test-results-tab&runId=44081502&resultId=102918)|dotnet/runtime#133915|
|[1596701](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596701)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596701&view=ms.vss-test-web.build-test-results-tab&runId=44079914&resultId=102919)|dotnet/runtime#133883|
|[1596619](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596619)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596619&view=ms.vss-test-web.build-test-results-tab&runId=44077840&resultId=102918)|dotnet/runtime#133547|
|[1596493](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596493)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596493&view=ms.vss-test-web.build-test-results-tab&runId=44076642&resultId=102950)|dotnet/runtime#133882|
|[1596529](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596529)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596529&view=ms.vss-test-web.build-test-results-tab&runId=44076204&resultId=102950)|dotnet/runtime#133847|
|[1596502](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596502)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596502&view=ms.vss-test-web.build-test-results-tab&runId=44075212&resultId=102950)|dotnet/runtime#133914|
|[1596474](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596474)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596474&view=ms.vss-test-web.build-test-results-tab&runId=44074356&resultId=102920)|dotnet/runtime#133912|
|[1596456](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596456)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596456&view=ms.vss-test-web.build-test-results-tab&runId=44073954&resultId=102950)|dotnet/runtime#133732|
|[1596425](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596425)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596425&view=ms.vss-test-web.build-test-results-tab&runId=44073526&resultId=102918)||
|[1596309](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596309)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596309&view=ms.vss-test-web.build-test-results-tab&runId=44072630&resultId=102882)|dotnet/runtime#133773|
|[1596343](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596343)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596343&view=ms.vss-test-web.build-test-results-tab&runId=44072432&resultId=102726)|dotnet/runtime#133894|
|[1596210](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596210)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596210&view=ms.vss-test-web.build-test-results-tab&runId=44071638&resultId=102918)|dotnet/runtime#133188|
|[1596293](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596293)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596293&view=ms.vss-test-web.build-test-results-tab&runId=44071408&resultId=102918)|dotnet/runtime#133892|
|[1596179](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596179)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596179&view=ms.vss-test-web.build-test-results-tab&runId=44071088&resultId=103251)|dotnet/runtime#133115|
|[1596148](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596148)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596148&view=ms.vss-test-web.build-test-results-tab&runId=44069646&resultId=102918)|dotnet/runtime#133800|
|[1595957](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595957)|dotnet/runtime|[Regression_ro_2.WorkItemExecution](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595957&view=ms.vss-test-web.build-test-results-tab&runId=44062896&resultId=102950)|dotnet/runtime#133735|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|40|41|41|

Start with build 1595957 and the Regression_ro_2.WorkItemExecution result, then review the validated mono_dump_native_crash_info pattern and the repeated build reports. Compare the listed runtime pull requests to determine whether this crash is already addressed elsewhere; done means confirming the owning investigation or identifying a reproducible unresolved failure.

Written by the indexing model from the issue text.