RFR: 8343618: Stack smashing in awt_InputMethod.c on Linux s390x

[Zdenek Zambersky]

On Fri, 16 May 2025 18:19:22 GMT, Phil Race <prr at openjdk.org> wrote:

> That looks right, and it should also be good for backports. The root cause must be a bug in Xlib, though. Has anyone found it, or reported it?

I have not identified the root cause. I think bug could also be in kinput2 or it's interaction with X11/Xlib (as scenario with kinput2 is problematic case as far as I understand).

Unfortunately this would be very difficult to debug for me, as I have no experience with input of Asian characters (kinput2) and RHEL (8) does not offer kinput2 package. In addition I can only do testing remotely on temporarily loaned s390x headless machine. So I do not plan to dig deeper into this myself and I rely on observations by @takiguc here.

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PR Comment: https://git.openjdk.org/jdk/pull/24197#issuecomment-2894608187