[jdk25u-dev] RFR: 8371368: SIGSEGV in JfrVframeStream::next_vframe() on arm64

[Goetz Lindenmaier]

On Mon, 15 Dec 2025 14:14:02 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Fixes up JFR CPU profiling regression in JDK 25. I can reproduce the failure with `jdk_jfr` tests on Graviton 3 machine.
> 
> This PR contains two changesets, because putting only one of them breaks platforms. This is a stack of two clean backport commits, and the resulting change is tidy.
> 
> Additional testing:
>  - [x] Linux AArch64 server fastdebug, `jdk_jfr`, 100x with `-XX:+PreserveFramePointer`
>  - [x] Linux AArch64 server fastdebug, `jdk_jfr`, 100x

Hi @shipilev 
Do you know which change caused [8371368](https://bugs.openjdk.org/browse/JDK-8371368) in first place? Might be good to link this in JBS.

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PR Comment: https://git.openjdk.org/jdk25u-dev/pull/88#issuecomment-3664826564