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  1. JDK
  2. JDK-8256688

Shenandoah: Lock rank inversion after JDK-8212879

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    • Subcomponent:
      gc
    • Resolved In Build:
      b26

      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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              Assignee:
              zgu Zhengyu Gu
              Reporter:
              zgu Zhengyu Gu
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                Updated:
                Resolved: