> The root cause for crash in ZGC is that the JNIHandles are processed before > object iteration. And ZGC would update the JNIHandles at object iteration > with read barrier. So the crash is cause by accessing the invalid address > which can be dummy info after zgc, and hence crash. > > The lock rank issue can be fixed because the related mutexes are acquired in > safepoint. so the safepoint_check_required could be safepoint_check_always. > > The Epsilon issue is caused by wrong _num_dumper_thread calculated when the > gang==NULL.
Lin Zang has updated the pull request incrementally with one additional commit since the last revision: Add missing read barrier ------------- Changes: - all: https://git.openjdk.java.net/jdk/pull/5681/files - new: https://git.openjdk.java.net/jdk/pull/5681/files/91f1c349..c1658e19 Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5681&range=02 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5681&range=01-02 Stats: 34 lines in 1 file changed: 16 ins; 16 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/5681.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5681/head:pull/5681 PR: https://git.openjdk.java.net/jdk/pull/5681
