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Bug
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Resolution: Fixed
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P2
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11, 15, 16
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b28
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8257869 | 15u-cpu | Zhengyu Gu | P2 | Resolved | Fixed | master |
| JDK-8257842 | 15.0.2 | Zhengyu Gu | P2 | Resolved | Fixed | b07 |
| JDK-8258021 | 11.0.11 | Zhengyu Gu | P2 | Resolved | Fixed | b01 |
| JDK-8257840 | 11.0.10 | Zhengyu Gu | P2 | Resolved | Fixed | b06 |
Usually, marking code calls Klass::oop_oop_iterate(), where it marks object klass metadata.
Shenandoah introduced chunked array processing a while ago to breakup marking a large array into chunks, then call oop_iterate_range() to mark individual chunk. Unfortunately, oop_iterate_range() does not iterate over object klass metadata, which it should *not*, so we end up missing the mark of object array klass metadata.
Thanks for [~lmao] reporting the bug.
Shenandoah introduced chunked array processing a while ago to breakup marking a large array into chunks, then call oop_iterate_range() to mark individual chunk. Unfortunately, oop_iterate_range() does not iterate over object klass metadata, which it should *not*, so we end up missing the mark of object array klass metadata.
Thanks for [~lmao] reporting the bug.
- backported by
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JDK-8257840 Shenandoah: objArrayKlass metadata is not marked with chunked arrays
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- Resolved
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- Resolved
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- Resolved
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- Resolved
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- relates to
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JDK-8129417 Oop iteration clean-up to remove oop_ms_follow_contents
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- Resolved
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(2 links to)