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[release/5.0] Fix GC hole with STOREIND of LCL_VAR_ADDR/LCL_FLD_ADDR - #45947

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mmitche merged 1 commit into
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BruceForstall:Port45557FixToNet5
Dec 11, 2020
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[release/5.0] Fix GC hole with STOREIND of LCL_VAR_ADDR/LCL_FLD_ADDR#45947
mmitche merged 1 commit into
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BruceForstall:Port45557FixToNet5

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@BruceForstall

@BruceForstallBruceForstall commented Dec 11, 2020

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Backport of (part of) #45818 to release/5.0

Fixes: #45557

Customer Impact

Reported by Roslyn. Bad GC info can lead to an unexplained crash that can't easily be found or worked around.

Regression?

Yes, this is a regression from .NET Core 3.1

Testing

Manual, new unit test, CLR outerloop, SuperPMI asm diffs.

Risk

Low

Backport of (part of) dotnet#45818 to release/5.0
Fixes: dotnet#45557
Reported by Roslyn. Bad GC info can lead to an unexplained crash that can't easily be found or worked around.
Manual, new unit test, CLR outerloop, SuperPMI asm diffs.
Low
@Dotnet-GitSync-BotDotnet-GitSync-Bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Dec 11, 2020
@AndyAyersMSAndyAyersMS added the Servicing-consider Issue for next servicing release review label Dec 11, 2020
@AndyAyersMSAndyAyersMS added this to the 5.0.x milestone Dec 11, 2020

@jeffschwMSFTjeffschwMSFT left a comment

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Approved. We may still be able to consider this for 5.0.2

@mmitche
mmitche merged commit 5166da4 into dotnet:release/5.0Dec 11, 2020
@BruceForstall
BruceForstall deleted the Port45557FixToNet5 branch December 11, 2020 22:21
@ghostghost locked as resolved and limited conversation to collaborators Jan 10, 2021
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area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIServicing-considerIssue for next servicing release review

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@BruceForstall@jeffschwMSFT@AndyAyersMS@mmitche@Dotnet-GitSync-Bot