gcstress failures on arm64

[jakobbotsch]

Looks like there are intermittent arm64 gcstress failures since somewhere in December: https://dev.azure.com/dnceng-public/public/_build?definitionId=112&_a=summary

Example log: https://helixr18s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-main-b5d97605778445319d/JIT.performance.0.1/1/console.42e38211.log?helixlogtype=result

15:50:34.155 Running test: JIT/Performance/CodeQuality/BenchmarksGame/regex-redux/regex-redux-5/regex-redux-5.dll

Assert failure(PID 22 [0x00000016], Thread: 49 [0x0031]): !CREATE_CHECK_STRING(pMT && pMT->Validate())
    File: /__w/1/s/src/coreclr/vm/object.cpp:560
    Image: /root/helix/work/correlation/corerun

[createdump] Gathering state for process 22 corerun
[createdump] Crashing thread 0031 signal 6 (0006)
apply_reg_state: ip and cfa unchanged; stopping here (ip=0xe3f13147e12c)
apply_reg_state: ip and cfa unchanged; stopping here (ip=0xe3f13147e12c)
[createdump] Writing crash report to file /home/helixbot/dotnetbuild/dumps/coredump.22.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /home/helixbot/dotnetbuild/dumps/coredump.22.dmp
[createdump] Written 218394624 bytes (53319 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 446ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0
App Exit Code: 22
Expected: 100
Actual: 22
END EXECUTION - FAILED
+ test_exit_code=1
+ /root/helix/work/correlation/XUnitLogChecker --results-path JIT/Performance/JIT.performance --test-wrapper JIT.performance --dumps-path /home/helixbot/dotnetbuild/dumps

cc @dotnet/jit-contrib

[dotnet-policy-service]

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

[jakobbotsch]

Also looks like we have a number of timeouts on osx-arm64. Not sure why that would have started recently, the pipeline was green before December.