MonoTests.System.Drawing.TestBitmap fail on Linux arm on checked coreclr

[safern]

Some tests from TestBitmap fail with:

Assert failure(PID 23 [0x00000017], Thread: 39 [0x0027]): object->HasEmptySyncBlockInfo()
    File: /__w/1/s/src/coreclr/src/vm/jithelpers.cpp Line: 2279
    Image: /root/helix/work/correlation/dotnet

when running on checked coreclr. Some of these tests are:

• LockBits_ImageLockMode_Invalid
• LockBits_Double
• SetResolution_Negative_X

Helix queue: Ubuntu.1804.Armarch.Open
Docker image: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440

cc: @BruceForstall @jashook

category:correctness
theme:gc-stress
skill-level:expert
cost:medium

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[safern]

I'm disabling these on: #36910

[BruceForstall]

I've seen this failure with many tests in #36486. I haven't had the chance to investigate / disable them yet.

[BruceForstall]

@janvorli I haven't investigated this yet. The assert makes it seem like a VM, not codegen, issue.

[BruceForstall]

Another failure:

System.Memory.Tests, net5.0-Linux-Release-arm-CoreCLR_checked-jitstress2_jitstressregs1

https://dev.azure.com/dnceng/public/_build/results?buildId=745730&view=ms.vss-test-web.build-test-results-tab&runId=23109872&resultId=171344&paneView=dotnet-dnceng.dnceng-build-release-tasks.helix-test-information-tab