Hi, pleaser consider. On Linux/RISC-V, SA stack walking can loop indefinitely in `RISCV64CurrentFrameGuess.run()` when a guessed frame leads to a cyclic sender chain. This caused `sun/tools/jhsdb/JStackStressTest.java` to time out.
Reject candidates whose sender stack pointer does not advance, matching the existing checks on AArch64 and AMD64. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - RISC-V: Avoid infinite loop in RISCV64CurrentFrameGuess Changes: https://git.openjdk.org/jdk/pull/33024/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=33024&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8392924 Stats: 10 lines in 1 file changed: 9 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/33024.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/33024/head:pull/33024 PR: https://git.openjdk.org/jdk/pull/33024
