The change adds W^X transition in RawMonitor family of functions, fixing the crash. RawMonitor functions are treated specially, so W^X transition is not inserted automatically. A better fix would be in .xml description for entries generation, but for now it is too risky. I hope to get this fixed in 17 in the simplest way and do re-work in the 18. This change is still 100% correct for the reported bug.
Verified by: jtreg -vmoption:-XX:+AssertWXAtThreadSync test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/bcinstr/BI04/bi04t002 ------------- Commit messages: - 8266889: Switch W^X in JVMTI RawMonitor functions Changes: https://git.openjdk.java.net/jdk17/pull/244/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=244&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8266889 Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk17/pull/244.diff Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/244/head:pull/244 PR: https://git.openjdk.java.net/jdk17/pull/244
