Assertion failed '!foundDiff' in 'OpenSsl:GetSslError(Microsoft.Win32.SafeHandles.SafeSslHandle,int,byref):int' during 'Linear scan register alloc'

[VSadov]

In Libraries Test Run checked coreclr Linux_musl arm64 Release

Failed here:
https://helix.dot.net/api/2019-06-17/jobs/844320ef-6ca1-4f63-8a1d-ea6c61cde3c9/workitems/System.Net.Requests.Tests/console
https://helix.dot.net/api/2019-06-17/jobs/844320ef-6ca1-4f63-8a1d-ea6c61cde3c9/workitems/System.Net.Security.Tests/console

Also here:
https://helix.dot.net/api/2019-06-17/jobs/81d8492e-f2a0-461c-8f6e-5f4060c57b55/workitems/System.Net.Requests.Tests/console
https://helix.dot.net/api/2019-06-17/jobs/81d8492e-f2a0-461c-8f6e-5f4060c57b55/workitems/System.Net.Security.Tests/console

[danmoseley]

Assert failure(PID 22 [0x00000016], Thread: 122 [0x007a]): Assertion failed '!foundDiff' in 'OpenSsl:GetSslError(Microsoft.Win32.SafeHandles.SafeSslHandle,int,byref):int' during 'Linear scan register alloc' (IL size 99)

    File: /__w/1/s/src/coreclr/src/jit/lsra.cpp Line: 2262
    Image: /root/helix/work/correlation/dotnet

./RunTests.sh: line 161:    22 Aborted                 "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Net.Requests.Tests.runtimeconfig.json --depsfile System.Net.Requests.Tests.deps.json xunit.console.dll System.Net.Requests.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE

[danmoseley]

@maryamariyan the bot should have added 'untriaged' ?

[AntonLapounov]

Hit it in my PR as well:
runtime (Libraries Test Run checked coreclr Linux_musl arm64 Release)
https://helix.dot.net/api/2019-06-17/jobs/c3ca6d1c-8d69-4a13-96ba-88e69e6cf1dd/workitems/System.Net.Requests.Tests/console
https://helix.dot.net/api/2019-06-17/jobs/c3ca6d1c-8d69-4a13-96ba-88e69e6cf1dd/workitems/System.Net.Security.Tests/console

[AndyAyersMS]

cc @CarolEidt

Possibly a dup of #39221

[maryamariyan]

@danmosemsft I'll take a look

[BruceForstall]

Also hits in the runtime-coreclr libraries-jitstress job:

https://dev.azure.com/dnceng/public/_build/results?buildId=734948&view=ms.vss-test-web.build-test-results-tab&runId=22752754&resultId=173996&paneView=dotnet-dnceng.dnceng-build-release-tasks.helix-test-information-tab