[GC tests] Consistency check failed: AV in clr at this callstack

[MichalStrehovsky]

09:43:19.412 Running test: GC/Features/HeapExpansion/plug/plug.cmd

Assert failure(PID 6180 [0x00001824], Thread: 3316 [0x0cf4]): Consistency check failed: AV in clr at this callstack:
------
CORECLR! WKS::gc_heap::background_mark_simple + 0x25 (0x72b52815)
CORECLR! WKS::gc_heap::background_promote + 0x10A (0x72b530da)
CORECLR! PinObject + 0xF8 (0x72b10548)
CORECLR! ScanConsecutiveHandlesWithoutUserData + 0x4E (0x72b0f1ee)
CORECLR! BlockScanBlocksWithoutUserData + 0x29 (0x72b0ec29)
CORECLR! xxxTableScanQueuedBlocksAsync + 0x126 (0x72b0f896)
CORECLR! xxxAsyncSegmentIterator + 0x39 (0x72b0f659)
CORECLR! TableScanHandles + 0x170 (0x72b0f4d0)
CORECLR! xxxTableScanHandlesAsync + 0xA4 (0x72b0f724)
CORECLR! HndScanHandlesForGC + 0x183 (0x72b0ccd3)
CORECLR! Ref_TracePinningRoots + 0x115 (0x72b12b35)
CORECLR! GCScan::GcScanHandles + 0x6E (0x72b1618e)
CORECLR! WKS::gc_heap::background_mark_phase + 0x392 (0x72b51712)
CORECLR! WKS::gc_heap::gc1 + 0x1B2 (0x72b5de72)
CORECLR! WKS::gc_heap::bgc_thread_function + 0xBC (0x72b548ac)
CORECLR! WKS::gc_heap::bgc_thread_stub + 0x27 (0x72b54b67)
CORECLR! <lambda_a0c271e9e42d55368cedfa2949f514ce>::operator() + 0x85 (0x7286a385)
KERNEL32! BaseThreadInitThunk + 0x24 (0x76d962c4)
NTDLL! RtlSubscribeWnfStateChangeNotification + 0x439 (0x771b0989)
-----
.AV on tid=0xcf4 (3316), cxr=08C7EDFC, exr=08C7EDAC

FAILED: false

CORECLR! CLRVectoredExceptionHandlerPhase3 + 0x367 (0x725bb917)
CORECLR! CLRVectoredExceptionHandlerPhase2 + 0x9C (0x725bb32c)
CORECLR! CLRVectoredExceptionHandler + 0x1DB (0x725bb26b)
CORECLR! CLRVectoredExceptionHandlerShim + 0x32D (0x725bbcfd)
NTDLL! WinSqmEventWrite + 0x1B827 (0x771ef3d7)
NTDLL! RtlUnwind + 0x1BA (0x771aeb4a)
NTDLL! KiUserExceptionDispatcher + 0xF (0x771c122f)
CORECLR! WKS::gc_heap::background_promote + 0x10A (0x72b530da)
CORECLR! PinObject + 0xF8 (0x72b10548)
CORECLR! ScanConsecutiveHandlesWithoutUserData + 0x4E (0x72b0f1ee)
    File: D:\a\_work\1\s\src\coreclr\vm\excep.cpp:6228
    Image: C:\h\w\A9D9093C\p\corerun.exe


Return code:      1
Raw output file:      C:\h\w\A9D9093C\w\AE5A08EF\uploads\HeapExpansion\plug\output.txt
Raw output:
BEGIN EXECUTION
 "C:\h\w\A9D9093C\p\corerun.exe" -p "System.Reflection.Metadata.MetadataUpdater.IsSupported=false" -p "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization=true"  plug.dll 
Running 100 iterations
Expected: 100
Actual: -1073740286
END EXECUTION - FAILED
FAILED

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1262530
Build error leg or test failing: GC/Features/HeapExpansion/plug/plug.cmd
Pull request: #123476

Error Message

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

{
  "ErrorMessage": ["Consistency check failed:", "HeapExpansion"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1262530
Error message validated: [Consistency check failed: HeapExpansion]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 1/22/2026 1:01:29 PM UTC

Report

Build	Definition	Test	Pull Request
1262530	dotnet/runtime	GC/Features/HeapExpansion/plug/plug.cmd	#123476

Summary

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

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

• Test failure GC\\Features\\HeapExpansion\\plug\\plug.cmd #93162
• Test failure: GC\\Features\\HeapExpansion\\plug\\plug.cmd #105211

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