System.Runtime.Tests.ControlledExecutionTests failing with fatal error

[jkotas]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1457331
Build error leg or test failing: System.Runtime.Tests.WorkItemExecution
Pull request: #129222

Error Message

DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

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

{
  "ErrorMessage": ["System.Runtime.Tests","Fatal error.","System.AccessViolationException"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1457331
Error message validated: [System.Runtime.Tests Fatal error. System.AccessViolationException]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 6/11/2026 2:01:47 AM UTC

Report

Build	Repository	Test	Pull Request
1460861	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129233
1460833	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#127582
1460541	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129218
1460273	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1459963	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129302
1459589	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129279
1459452	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129281
1459328	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#125437
1457331	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129222

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
8	9	9

[dotnet-policy-service]

Tagging subscribers to this area: @agocke
See info in area-owners.md if you want to be subscribed.

[jkotas]

AV caused by access to corrupted object reference stored in a stack slot:

 # Child-SP          RetAddr               Call Site
00 0000003b`f39f25f0 00007ffa`d326dada     System_Runtime_Tests!System.Runtime.Tests.ControlledExecutionTests.RunTest+0xa3
01 0000003b`f39f2620 00007ffa`d31dda29     coreclr!CallEHFunclet+0xfa [D:\a\_work\1\s\src\coreclr\vm\amd64\AsmHelpers.asm @ 495] 
02 0000003b`f39f2730 00007ffa`d31dba2b     coreclr!CallCatchFunclet+0x13d [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 3217] 
03 0000003b`f39f2970 00007ffa`d31dacea     coreclr!DispatchExSecondPass+0xdf [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 4448] 
04 0000003b`f39f29d0 00007ffa`d31da65b     coreclr!DispatchManagedException+0x15e [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 1724] 
05 0000003b`f39f3e70 00007ffa`d326dcc4     coreclr!IL_Throw_Impl+0xbb [D:\a\_work\1\s\src\coreclr\vm\jithelpers.cpp @ 806] 
06 0000003b`f39f44b0 00007ffa`74aaefc5     coreclr!IL_Throw+0xb4 [D:\a\_work\1\s\src\coreclr\vm\amd64\AsmHelpers.asm @ 1322] 
07 0000003b`f39f4620 00007ffa`d326dada     System_Private_CoreLib!System.Runtime.ControlledExecution.Run+0x305 [_/src/coreclr/System.Private.CoreLib/src/System/Runtime/ControlledExecution.CoreCLR.cs @ 106] 
08 0000003b`f39f4660 00007ffa`d31dda29     coreclr!CallEHFunclet+0xfa [D:\a\_work\1\s\src\coreclr\vm\amd64\AsmHelpers.asm @ 495] 
09 0000003b`f39f4770 00007ffa`d31dba2b     coreclr!CallCatchFunclet+0x13d [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 3217] 
0a 0000003b`f39f49b0 00007ffa`d31dacea     coreclr!DispatchExSecondPass+0xdf [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 4448] 
0b 0000003b`f39f4a10 00007ffa`d34916c6     coreclr!DispatchManagedException+0x15e [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 1724] 
0c 0000003b`f39f5eb0 00007ffb`299c70ef     coreclr!ProcessCLRException+0x1a6 [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 668] 
0d 0000003b`f39f5f10 00007ffb`2986e593     ntdll!RtlpExecuteHandlerForUnwind+0xf [minkernel\ntos\rtl\amd64\xcptmisc.asm @ 254] 
0e 0000003b`f39f5f40 00007ffb`29938df6     ntdll!RtlUnwindEx+0x283 [minkernel\ntos\rtl\amd64\exdsptch.c @ 1538] 
0f 0000003b`f39f6670 00007ffa`d349024b     ntdll!RtlUnwind+0xd6 [minkernel\ntos\rtl\amd64\exdsptch.c @ 1077] 
10 0000003b`f39f6be0 00007ffa`d34916d6     coreclr!ClrUnwindEx+0x1b [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 1797] 
11 0000003b`f39f6c10 00007ffb`299c706f     coreclr!ProcessCLRException+0x1b6 [D:\a\_work\1\s\src\coreclr\vm\exceptionhandling.cpp @ 629] 
12 0000003b`f39f6c70 00007ffb`29872327     ntdll!RtlpExecuteHandlerForException+0xf [minkernel\ntos\rtl\amd64\xcptmisc.asm @ 132] 
13 0000003b`f39f6ca0 00007ffb`2986a961     ntdll!RtlDispatchException+0x437 [minkernel\ntos\rtl\amd64\exdsptch.c @ 680] 
14 0000003b`f39f73f0 00007ffb`2723770a     ntdll!RtlRaiseException+0x221 [minkernel\ntos\rtl\amd64\raise.c @ 285] 
15 0000003b`f39f7bd0 00007ffa`d31d9d59     KERNELBASE!RaiseException+0x8a [minkernel\kernelbase\xcpt.c @ 954] 
16 0000003b`f39f7cd0 00007ffa`d3301df2     coreclr!RaiseTheExceptionInternalOnly+0xe9 [D:\a\_work\1\s\src\coreclr\vm\excep.cpp @ 2060] 
17 0000003b`f39f7d60 00007ffa`d32dd1f0     coreclr!Thread::HandleThreadAbort+0x977f2 [D:\a\_work\1\s\src\coreclr\vm\threadsuspend.cpp @ 2262] 
18 0000003b`f39f9b90 00007ffa`d31f5f73     coreclr!HandleSuspensionForInterruptedThread+0xe6750 [D:\a\_work\1\s\src\coreclr\vm\threadsuspend.cpp @ 5778] 
19 0000003b`f39fa8b0 00007ffa`d326ea65     coreclr!Thread::ApcActivationCallback+0x93 [D:\a\_work\1\s\src\coreclr\vm\threadsuspend.cpp @ 5862] 
1a 0000003b`f39fa8e0 00007ffb`298699d3     coreclr!ApcActivationCallbackStub+0x15 [D:\a\_work\1\s\src\coreclr\vm\amd64\RedirectedHandledJITCase.asm @ 234] 
1b 0000003b`f39fa920 00007ffb`299c683e     ntdll!RtlDispatchAPC+0x63 [minkernel\ldr\rtlstrt.c @ 1016] 
1c 0000003b`f39fa9a0 00007ffa`7514a667     ntdll!KiUserApcDispatch+0x2e [minkernel\ntos\rtl\amd64\trampoln.asm @ 339] 
1d 0000003b`f39fb060 00007ffa`7514a5d8     System_Runtime_Tests!System.Runtime.Tests.ControlledExecutionTests.RunInfiniteLoop+0x57
1e 0000003b`f39fb0a0 00007ffa`74aaee1b     System_Runtime_Tests!System.Runtime.Tests.ControlledExecutionTests+<>c__DisplayClass7_0.<CancelOutsideOfTryCatchFinally>g__Test|1()+0x38
1f 0000003b`f39fb0e0 00007ffa`74aaec47     System_Private_CoreLib!System.Runtime.ControlledExecution.Run+0x15b [_/src/coreclr/System.Private.CoreLib/src/System/Runtime/ControlledExecution.CoreCLR.cs @ 69] 
20 0000003b`f39fb170 00007ffa`7514a4f8     System_Runtime_Tests!System.Runtime.Tests.ControlledExecutionTests.RunTest+0x77
21 0000003b`f39fb1c0 00007ffa`d326ded3     System_Runtime_Tests!System.Runtime.Tests.ControlledExecutionTests.CancelOutsideOfTryCatchFinally+0x128
22 0000003b`f39fb240 00007ffa`d31e10b1     coreclr!CallDescrWorkerInternal+0x83 [D:\a\_work\1\s\src\coreclr\vm\amd64\CallDescrWorkerAMD64.asm @ 74]