JDK-8256688 : Shenandoah: Lock rank inversion after JDK-8212879
- Type: Bug
- Component: hotspot
- Sub-Component: gc
- Affected Version: 16
- Priority: P2
- Status: Resolved
- Resolution: Fixed
- Submitted: 2020-11-19
- Updated: 2021-01-13
- Resolved: 2020-11-20
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| JDK 16 |
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16 b26Fixed  |
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Relates :
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Description
After JDK-8212879, gc_notification() takes JvmtiTagMap_lock/24, while ShenandoahConcurrentWeakRootsEvacUpdateTask holds StringDedupQueue_lock/11. # Internal Error (/home/zgu/ws/jdk/src/hotspot/share/runtime/mutex.cpp:457), pid=837435, tid=837442 # fatal error: acquiring lock JvmtiTagMap_lock/24 out of order with lock StringDedupQueue_lock/11 -- possible deadlock # # JRE version: OpenJDK Runtime Environment (16.0) (fastdebug build 16-internal+0-adhoc.zgu.jdk) # Java VM: OpenJDK 64-Bit Server VM (fastdebug 16-internal+0-adhoc.zgu.jdk, mixed mode, sharing, tiered, compressed oops, shenandoah gc, linux-amd64) # Problematic frame: # V [libjvm.so+0x14e1c5b] Mutex::set_owner_implementation(Thread*)+0x43b
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