RFR: 8367967: C2: "fatal error: Not monotonic" with Mod nodes

[Hannes Greule]

On Wed, 24 Sep 2025 09:21:32 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> Unfortunately we still see an assert in the test java/foreign/TestUpcallStress on Linux aarch64 . But this time it is not the 'old' one but
> 
> `# assert(oopDesc::is_oop(obj)) failed: not an oop: 0x0000000000000001`
> 
> Maybe it is unrelated, not sure .

@MBaesken this looks rather unrelated, but hard to tell without more output.

@chhagedorn did your tests came back green?

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PR Comment: https://git.openjdk.org/jdk/pull/27408#issuecomment-3337378419