Assertion failed '!memBase->isContained()' #49880
Description
In runtime-coreclr libraries-jitstress pipeline, starting with:
https://dev.azure.com/dnceng/public/_build/results?buildId=1043206&view=results
Failure in "net6.0-Linux-Release-x64-CoreCLR_checked-jitstress1_tiered-Ubuntu.1804.Amd64.Open", System.Buffers.Tests:
COMPlus_TieredCompilation=1
COMPlus_JitStress=1
COMPlus_DbgMiniDumpName=/home/helixbot/dotnetbuild/dumps/coredump.%d.dmp
COMPlus_DbgEnableMiniDump=1
+ ./RunTests.sh --runtime-path /home/helixbot/work/A6CA0954/p
----- start Wed Mar 17 08:22:54 UTC 2021 =============== To repro directly: =====================================================
pushd .
/home/helixbot/work/A6CA0954/p/dotnet exec --runtimeconfig System.Buffers.Tests.runtimeconfig.json --depsfile System.Buffers.Tests.deps.json xunit.console.dll System.Buffers.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing
popd
===========================================================================================================
~/work/A6CA0954/w/B021097F/e ~/work/A6CA0954/w/B021097F/e
Discovering: System.Buffers.Tests (method display = ClassAndMethod, method display options = None)
Discovered: System.Buffers.Tests (found 42 of 44 test cases)
Starting: System.Buffers.Tests (parallel test collections = on, max threads = 2)
System.Buffers.ArrayPool.Tests.CollectionTests.ThreadLocalIsCollectedUnderHighPressure [SKIP]
Condition(s) not met: "IsStressModeEnabledAndRemoteExecutorSupported"
Assert failure(PID 20228 [0x00004f04], Thread: 20234 [0x4f0a]): Assertion failed '!memBase->isContained()' in 'Bucket[Byte][System.Byte]:.ctor(int,int,int):this' during 'Generate code' (IL size 49)
File: /__w/1/s/src/coreclr/jit/emitxarch.cpp Line: 3013
Image: /home/helixbot/work/A6CA0954/p/dotnet
Possibly related to new stress mode? #49636
@dotnet/jit-contrib