[jdk21u-dev] RFR: 8350412: [21u] AArch64: Ambiguous frame layout leads to incorrect traces in JFR

[Paul Hohensee]

On Thu, 20 Feb 2025 12:09:51 GMT, Dmitry Chuyko <dchuyko at openjdk.org> wrote:

> This change fixes incorrect stack traces sometimes reported by JFR (non-deterministic stack walking). It is technically a clean backport of 'Make the anchor frame walkable' changes of aarch64_enc_java_to_runtime() from https://github.com/openjdk/jdk/pull/21565/files#diff-018aa61d1a7aafcf70a535fcd40a318a4bd6511fd40ac39ce4be90cc52216749
> 
> I propose to cherry pick those into older releases after JDK 24 is out, starting from 21u.
> 
> Testing: tier1,2 on linux-aarch64.

Marked as reviewed by phh (Reviewer).

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PR Review: https://git.openjdk.org/jdk21u-dev/pull/1418#pullrequestreview-2630500097