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[release/8.0] Avoid allocating collectible instances in the frozen heap (#100444) #100509

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merged 1 commit into from
Apr 4, 2024
Merged

[release/8.0] Avoid allocating collectible instances in the frozen heap (#100444) #100509

merged 1 commit into from
Apr 4, 2024

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jkotas
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@jkotas jkotas commented Apr 2, 2024

Backport of #100444 to release/8.0-staging

Customer Impact

  • Customer reported
  • Found internally

Intermittent crashes and memory leaks in complex scenarios involving collectible assemblies.

Regression

  • Yes
  • No

Regression introduced by new JIT optimization in .NET 8.

Testing

Targeted test crashing or failing before the fix, passing with the fix. Also, customer verified the fix.

Risk

Low. The fix is to suppress the new JIT optimization for shared generic code.

@xoofx @jkotas
Fix allocation of empty array in the frozen heap for collectible types (
78f7707 
#100444)

* Fix allocation of empty array in the frozen heap for collectible types (#100437)

* Remove Optimize from csproj

* Add test for generic with static

* Apply suggestions from code review

* Better test

* Disable tests on Mono

---------

Co-authored-by: Jan Kotas <jkotas@microsoft.com>
@dotnet-issue-labeler dotnet-issue-labeler bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Apr 2, 2024
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@jkotas jkotas assigned jkotas and unassigned jkotas Apr 2, 2024
@jkotas jkotas requested a review from EgorBo April 2, 2024 05:43
@jkotas jkotas mentioned this pull request Apr 2, 2024
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jeffschwMSFT
jeffschwMSFT approved these changes Apr 2, 2024
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approved. we will take for consideration in 8.0.x

@jeffschwMSFT jeffschwMSFT added the Servicing-consider Issue for next servicing release review label Apr 2, 2024
@jeffschwMSFT jeffschwMSFT added this to the 8.0.x milestone Apr 2, 2024
@rbhanda rbhanda modified the milestones: 8.0.x, 8.0.5 Apr 2, 2024
@rbhanda rbhanda added Servicing-approved Approved for servicing release and removed Servicing-consider Issue for next servicing release review labels Apr 2, 2024
@jkotas jkotas merged commit 7ae2d00 into release/8.0-staging Apr 4, 2024
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@jkotas jkotas deleted the backport/pr-100444-to-release/8.0-staging branch April 17, 2024 01:25
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@EgorBo EgorBo EgorBo approved these changes

@jeffschwMSFT jeffschwMSFT jeffschwMSFT approved these changes

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area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI Servicing-approved Approved for servicing release
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