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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 12
Affects Version/s: 12
Component/s: hotspot
Labels:

Subcomponent:
runtime
Resolved In Build:
b21

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8269204	11.0.13-oracle	Ludvig Janiuk	P4	Resolved	Fixed	b02
JDK-8228877	11.0.5	Erik Österlund	P4	Resolved	Fixed	b02

The Klass::verify_on() is sometimes called on unloaded klasses. It then reads a dead mirror, without using AS_NO_KEEPALIVE, which can make GC barriers feel like :C. In order to make barriers happy, AS_NO_KEEPALIVE should be used when loading dead oops.

backported by

JDK-8228877 Change mirror accessor in Klass::verify_on() to use AS_NO_KEEPALIVE

Resolved

JDK-8269204 Change mirror accessor in Klass::verify_on() to use AS_NO_KEEPALIVE

Resolved

relates to

JDK-8210063 ZGC: Enable load barriers for IN_NATIVE runtime barriers

Resolved

JDK-8224531 SEGV while collecting Klass statistics

Closed

Assignee:: Erik Österlund

Reporter:: Erik Österlund

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Created:: 2018-10-25 11:33

Updated:: 2021-07-12 02:24

Resolved:: 2018-11-20 03:37

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