Make sure when walking the stack that the "sender" frame is not at a lower or the same address as the current frame, which can result in an infinite loop.
Tested with tier1 and stress testing sun/tools/jhsdb and hotspot/jtreg/serviceability/sa tests. ------------- Commit messages: - Detect bad stackwalking in VFrame.javaSender() Changes: https://git.openjdk.org/jdk/pull/15183/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15183&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8313798 Stats: 12 lines in 2 files changed: 10 ins; 1 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/15183.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15183/head:pull/15183 PR: https://git.openjdk.org/jdk/pull/15183
