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Type: Bug
Resolution: Fixed
Priority: P4
Fix Version/s: 18
Affects Version/s: 8, 11, 17, 18
Component/s: hotspot
Labels:

Subcomponent:
runtime
Resolved In Build:
b22

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8307296	17.0.9-oracle	Calvin Cheung	P4	Resolved	Fixed	b01
JDK-8301323	17.0.7	Thomas Stuefe	P4	Resolved	Fixed	b01

Metaspace::contains() is used in many places. It is not threadsafe since it walks the list of metaspace mappings, which can be altered concurrently. This is suspected to be the cause for ~~JDK-8271124~~.

This is a day zero bug of metaspace, in there since JDK 8. Weirdly enough it never surfaced until now.

Currently, it does not lock, and adding a lock is not realistic either. It should work lockless. (See discussion in comment section of ~~JDK-8271124~~).

backported by

JDK-8301323 Metaspace::contains() should be threadsafe

Resolved

JDK-8307296 Metaspace::contains() should be threadsafe

Resolved

duplicates

JDK-8271124 CTW tests crashed with assert(is_valid_method(o)) failed: should be valid jmethodid

Closed

is blocked by

JDK-8275582 Don't purge metaspace mapping lists

Resolved

relates to

JDK-8276086 Increase size of metaspace mappings

Resolved

JDK-8271124 CTW tests crashed with assert(is_valid_method(o)) failed: should be valid jmethodid

Closed

links to

Commit openjdk/jdk17u-dev/4a9bd23a

Commit openjdk/jdk/d9b0138d

Review openjdk/jdk17u-dev/1120

Review openjdk/jdk/6060

(1 relates to, 4 links to)

Assignee:: Thomas Stuefe

Reporter:: Thomas Stuefe

Votes:: 0 Vote for this issue

Watchers:: 5 Start watching this issue

Created:: 2021-10-21 01:06

Updated:: 2023-05-09 04:43

Resolved:: 2021-10-27 22:31

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