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[release/11.0] Fix .NET 11 rc1 SDK crash on RHEL8 arm64 - #134148

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JulieLeeMSFT merged 1 commit into
release/11.0from
backport/pr-133887-to-release/11.0
Sep 17, 2026
Merged

JulieLeeMSFT merged 1 commit into
release/11.0from
backport/pr-133887-to-release/11.0

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@github-actions github-actions Bot commented Sep 17, 2026 •

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Backport of #133887 to release/11.0

/cc @jkotas @copilot

Customer Impact

  • Customer reported
  • Found internally

NativeAOT compiled .NET SDK components crash on RHEL.

The Arm64 instruction encoding used for NativeAOT marshalled delegate thunks did not work on RHEL that uses 64kB pages by default. This was found by running NativeAOT compiled SDK components on RHEL.

Regression

  • Yes
  • No

Testing

The fix was validated on RHEL. #133944 opened on improving the test coverage that would allow us to find this issue earlier.

Risk

Low

Fixes #133675

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jkotas <6668460+jkotas@users.noreply.github.com>
Co-authored-by: Jan Kotas <jkotas@microsoft.com>
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@jkotas jkotas added arch-arm64 os-linux Linux OS (any supported distro) labels Sep 17, 2026
@jkotas
jkotas requested a review from jkoritzinsky September 17, 2026 18:42
@steveisok steveisok added the Servicing-approved Approved for servicing release label Sep 17, 2026
@JulieLeeMSFT
JulieLeeMSFT merged commit 7961a4a into release/11.0 Sep 17, 2026
131 of 136 checks passed
@JulieLeeMSFT
JulieLeeMSFT deleted the backport/pr-133887-to-release/11.0 branch September 17, 2026 23:10
@JulieLeeMSFT JulieLeeMSFT added this to the 11.0.0 milestone Sep 17, 2026
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5 participants