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Test Failure: MethodTable::Validate SanityCheck() assert (arm32 jitstress) in source-generator unit test work items #128595
Description
Summary:
ComInterfaceGenerator.Unit.Tests (jitstress2_tiered) and LibraryImportGenerator.Unit.Tests (jitstress2_jitstressregs0x2000), both on linux arm32, abort with Expression: SanityCheck() in MethodTable::Validate at methodtable.cpp:8659. Process exits 134 (SIGABRT).
Failed in (2):
- runtime-coreclr libraries-jitstress 20260526.1
- runtime-coreclr libraries-jitstress2-jitstressregs 20260523.1
Console Log: Console Log
Source: runtime-coreclr libraries-jitstress / net11.0-linux-Release-arm-jitstress2_tiered-(Debian.13.Arm32.Open)[email protected]/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:9ee81df17d6a4bf96b7b2f785a1352a3a762aec2a01b2bb8ffd691520aad7dee / ComInterfaceGenerator.Unit.Tests
Failed tests:
runtime-coreclr libraries-jitstress
- net11.0-linux-Release-arm-jitstress2_tiered-(Debian.13.Arm32.Open)[email protected]/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:9ee81df17d6a4bf96b7b2f785a1352a3a762aec2a01b2bb8ffd691520aad7dee
runtime-coreclr libraries-jitstress2-jitstressregs
- net11.0-linux-Release-arm-jitstress2_jitstressregs0x2000-(Debian.13.Arm32.Open)[email protected]/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:9ee81df17d6a4bf96b7b2f785a1352a3a762aec2a01b2bb8ffd691520aad7dee
- ComInterfaceGenerator.Unit.Tests
- LibraryImportGenerator.Unit.Tests
Error Message:
ASSERT FAILED
Expression: SanityCheck()
Location: /__w/1/s/src/coreclr/vm/methodtable.cpp:8659
Function: Validate
Process: 20
[createdump] Gathering state for process 20 dotnet
[createdump] Crashing thread 0038 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 637722624 bytes (155694 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 1285ms
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
cat: /proc/sys/kernel/coredump_filter: No such file or directory
dmesg: read kernel buffer failed: Operation not permitted
/root/helix/work/workitem/e
----- end Tue May 26 08:05:09 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.
Stack Trace:
(unresolved frames marked `??`)
Analysis:
Two occurrences in distinct pipelines (libraries-jitstress and libraries-jitstress2-jitstressregs) under different jitstress modes, both on linux arm32, both unit test assemblies for the source generator infrastructure (ComInterfaceGenerator and LibraryImportGenerator). The assert location and architecture differ from the existing windows-x86 SanityCheck umbrella #128330 (which fires at methodtable.cpp:8697 from Object::Validate during GC scan on windows-x86 jitstress2_jitstressregs3). The closed #125685 covered ComInterfaceGenerator.Unit.Tests crashes under jitstressregs on windows-x64 with AccessViolationException -- similar pipelines but different platform (x64 not arm32) and different signature (AV not SanityCheck assert). The #128590 umbrella covers a different assert (HijackThread) on the same arm32 pipelines. No open issue with matching arch + assert line + scenario. Flagged as NEW.
Generated by ci-pipeline-monitor/scripts/update_github.py
Activity
dotnet-policy-service commentedon May 26, 2026
Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.
JulieLeeMSFT commentedon Jun 2, 2026
Possibly duplicate of #128590.
dotnet-policy-service commentedon Jun 2, 2026
Tagging subscribers to this area: @anicka-net, @dotnet/gc
See info in area-owners.md if you want to be subscribed.
JulieLeeMSFT commentedon Jun 17, 2026
Failed in (1):
Console Log: Console Log
Source: runtime-coreclr libraries-jitstress / net11.0-linux-Release-arm-jitstress1_tiered-(Debian.13.Arm32.Open)[email protected]/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:7cd2e25705d98e003a2d4f2e10cbf27847f573d9548e06a72062028ed74f43a6 / ComInterfaceGenerator.Unit.Tests