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Assertion failed 'resumedUseArg->GetNode()->OperIs(GT_LCL_VAR) && resumedDefArg->GetNode()->OperIs(GT_LCL_ADDR) && execArg->GetNode()->OperIs(GT_LCL_VAR) && syncArg->GetNode()->OperIs(GT_LCL_VAR)' #131665
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.@AndyAyersMS, PTAL. It's failing in OSR mode.
This is runtime async stuff, I'll take a look
Reacted by Julie LeeFailed in: runtime-coreclr libraries-pgo 20260802.1
Failed tests:
net11.0-linux-Release-arm64-fullpgo-AzureLinux.3.Arm64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-arm64-jitosr_stress_random-AzureLinux.3.Arm64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-arm64-fullpgo_methodprofiling-AzureLinux.3.Arm64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-arm64-fullpgo_random_gdv-AzureLinux.3.Arm64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-x64-fullpgo_methodprofiling-AzureLinux.3.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-x64-fullpgo_random_gdv-AzureLinux.3.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-x64-fullpgo-AzureLinux.3.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-linux-Release-x64-jitosr_stress_random-AzureLinux.3.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-windows-Release-x64-syntheticpgo_blend-Windows.10.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-windows-Release-x64-fullpgo_methodprofiling-Windows.10.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-windows-Release-x64-fullpgo_random_gdv-Windows.10.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-windows-Release-x64-jitosr_stress_random-Windows.10.Amd64.Open - System.Xml.Linq.Misc.Tests Work Item net11.0-windows-Release-x64-fullpgo_random_gdv_methodprofiling_only-Windows.10.Amd64.Open - System.Xml.Linq.Misc.Tests Work ItemError message:
Assert failure(PID 29861 [0x000074a5], Thread: 29873 [0x74b1]): Assertion failed 'resumedUseArg->GetNode()->OperIs(GT_LCL_VAR) && resumedDefArg->GetNode()->OperIs(GT_LCL_ADDR) && execArg->GetNode()->OperIs(GT_LCL_VAR) && syncArg->GetNode()->OperIs(GT_LCL_VAR)' in 'System.Xml.Linq.ElementWriter:WriteElementAsync(System.Xml.Linq.XElement,System.Threading.CancellationToken):this' during 'Morph - Inlining' (IL size 262; hash 0xb019379b; Tier1-OSR) File: /__w/1/s/src/coreclr/jit/importercalls.cpp:7453 Image: /datadisks/disk1/work/9F9A085D/p/dotnet [createdump] Gathering state for process 29861 dotnet [createdump] Crashing thread 74b1 signal 6 (0006) apply_reg_state: ip and cfa unchanged; stopping here (ip=0xf7b00bbc60cc) apply_reg_state: ip and cfa unchanged; stopping here (ip=0xf7b00bbc60cc) apply_reg_state: ip and cfa unchanged; stopping here (ip=0xf7b00bbc60cc) [createdump] Writing crash report to file /datadisks/disk1/dumps/coredump.29861.dmp.crashreport.json [createdump] Crash report successfully written ASSERT FAILED Expression: !"Target stack has been corrupted, SP for current frame must be larger than previous frame." Location: /__w/1/s/src/coreclr/vm/threads.cpp:6915 Function: EnumMemoryRegionsWorker Process: 29877 waitpid() returned successfully (wstatus 00000085) WEXITSTATUS 0 WTERMSIG 5 ./RunTests.sh: line 175: 29861 Aborted (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Xml.Linq.Misc.Tests.runtimeconfig.json --depsfile System.Xml.Linq.Misc.Tests.deps.json xunit.console.dll System.Xml.Linq.Misc.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE /datadisks/disk1/work/9F9A085D/w/AA4609B2/e ----- end Sun Aug 2 05:08:50 PM UTC 2026 ----- exit code 134 ----------------------------------------------------------Also failed on linux-musl-arm64 https://helix.dot.net/api/2019-06-17/jobs/117e9e76-3312-4364-86ec-bbda40838b38/workitems/System.Xml.Linq.Misc.Tests/console. Maybe we should convert it to a Known Build Error with template so BA doesn't fail.
Also fails in NativeAOT runs: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1537347/logs/107
- marked [ci-scan] Build break: NativeAOT ILC assertion resumedUseArg in importercalls.cpp during Morph - Inlining #131742 as a duplicate of this issue
on Aug 3, 2026 - locked and limited conversation to collaborators
on Sep 4, 2026
Summary:
System.Xml.Linq.Misc.Tests crashes (SIGABRT 134) on a JIT assert in importercalls.cpp:7453 (runtime-async resumption) under jitstress. 2 legs.
Failed in (1):
Console Log: Console Log
Source: runtime-coreclr libraries-jitstress / net11.0-linux-Release-arm64-jitstress2_tiered-AzureLinux.3.Arm64.Open / System.Xml.Linq.Misc.Tests
Failed tests:
Error Message:
Known Issue Error Message
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{ "ErrorMessage": "resumedUseArg->GetNode()->OperIs(GT_LCL_VAR) && resumedDefArg->GetNode()->OperIs(GT_LCL_ADDR) && execArg->GetNode()->OperIs(GT_LCL_VAR) && syncArg->GetNode()->OperIs(GT_LCL_VAR)", "ErrorPattern": "", "BuildRetry": false, "ExcludeConsoleLog": false }Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1534281
Error message validated:
[resumedUseArg->GetNode()->OperIs(GT_LCL_VAR) && resumedDefArg->GetNode()->OperIs(GT_LCL_ADDR) && execArg->GetNode()->OperIs(GT_LCL_VAR) && syncArg->GetNode()->OperIs(GT_LCL_VAR)]Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/3/2026 2:43:25 PM UTC
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