[aarch64-port-dev ] RFR: 8253816: Switch to Exec W^X mode after JNI DetachCurrentThread

Thu Dec 17 12:35:24 UTC 2020

On Wed, 9 Dec 2020 14:57:42 GMT, Anton Kozlov <akozlov at openjdk.org> wrote:

> JVM leaves Writeable mode for W^X after JNI detach thread. #9 describes an example when this breaks application expectations: a thread returns to a code generated by the application after JNI detach and crashes. Since the default mode is Executable, the change to Writeable is implicit and not expected.
> 
> The proposed solution is to ensure Executable mode after JNI detach.

Looks good to me. Thanks for providing a test case.

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Marked as reviewed by burban (Author).

PR: https://git.openjdk.java.net/aarch64-port/pull/10