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Type: Bug
Resolution: Fixed
Priority: P2
Fix Version/s: 13
Affects Version/s: 8u212, 11.0.3
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b26
Verification:
Not verified

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8226390	14	Andrew Haley	P2	Resolved	Fixed	b02
JDK-8228229	13.0.2	Andrew Haley	P2	Resolved	Fixed	b01
JDK-8228014	13.0.1	Andrew Haley	P2	Resolved	Fixed	master
JDK-8230722	11.0.6-oracle	Andrew Haley	P2	Closed	Fixed	b01
JDK-8226864	11.0.5	Andrew Haley	P2	Resolved	Fixed	b01
JDK-8226481	11.0.4	Andrew Haley	P2	Resolved	Fixed	b09
JDK-8227344	openjdk8u232	Andrew Haley	P2	Resolved	Fixed	b01
JDK-8226405	openjdk8u222	Andrew Haley	P2	Resolved	Fixed	b07
JDK-8241084	8u261	Fairoz Matte	P2	Closed	Fixed	b01
JDK-8246885	emb-8u261	Andrew Haley	P2	Resolved	Fixed	team

The Block Offset Table is accessed racily in many places. This is UB, but I suspect the authors of G1 assumed that the UB was "benign". In fact it is not, and there is a narrow race condition which causes G1 to crash at times of heavy stress.

The bug has only ever been observed on 86-32, but it isn't a target-specific bug. It's probably not specific to G1 either.

backported by

JDK-8226390 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8226405 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8226481 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8226864 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8227344 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8228014 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8228229 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8246885 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Resolved

JDK-8230722 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Closed

JDK-8241084 G1 GC: Undefined behaviour in G1BlockOffsetTablePart::block_at_or_preceding

Closed

relates to

JDK-8225809 Investigate JDK-8225716 impact on other generational collectors

Closed

(5 backported by, 1 relates to)

Assignee:: Andrew Haley

Reporter:: Andrew Haley

Votes:: 0 Vote for this issue

Watchers:: 5 Start watching this issue

Created:: 2019-06-13 07:40

Updated:: 2020-06-09 02:51

Resolved:: 2019-06-19 08:11

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