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Assert failure: RawGetMethodTable() #129554

@VincentBu

Description

@VincentBu

Failed in: runtime-coreclr libraries-jitstress 20260617.1

Failed tests:

net11.0-linux-Release-arm-jitstress1_tiered-(Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:7cd2e25705d98e003a2d4f2e10cbf27847f573d9548e06a72062028ed74f43a6
- ComInterfaceGenerator.Unit.Tests Work Item

Error message:

ASSERT FAILED
	Expression: RawGetMethodTable()
	Location:   /__w/1/s/src/coreclr/gc/gc.cpp:3554
	Function:   SetMarked
	Process:    20
[createdump] Gathering state for process 20 dotnet
[createdump] Crashing thread 0037 signal 5 (0005)
[createdump] Writing crash report to file /datadisks/disk1/dumps/coredump.20.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /datadisks/disk1/dumps/coredump.20.dmp
[createdump] Written 613879808 bytes (149873 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 1073ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0
./RunTests.sh: line 175:    20 Aborted                 (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig ComInterfaceGenerator.Unit.Tests.runtimeconfig.json --depsfile ComInterfaceGenerator.Unit.Tests.deps.json xunit.console.dll ComInterfaceGenerator.Unit.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/root/helix/work/workitem/e
----- end Wed Jun 17 07:51:48 AM UTC 2026 ----- exit code 134 ----------------------------------------------------------
exit code 134 means SIGABRT Abort. Managed or native assert, or runtime check such as heap corruption, caused call to abort(). Core dumped.

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    area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIblocking-clean-ci-optionalBlocking optional rolling runsuntriagedNew issue has not been triaged by the area owner

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