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  1. JDK
  2. JDK-8287227

Shenandoah: A couple of virtual thread tests failed with iu mode even without Loom enabled.

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 19
    • Fix Version/s: 20
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
      gc
    • Resolved In Build:
      master

      Description

      serviceability/jvmti/vthread/SuspendResume1/SuspendResume1.java
      serviceability/jvmti/vthread/VThreadTest/VThreadTest.java

      Failed without Loom enabled.

      To reproduce:
      make CONF=linux-x86_64-server-fastdebug TEST_VM_OPTS="-XX:+UseShenandoahGC -XX:+UnlockExperimentalVMOptions -XX:ShenandoahGCMode=iu" run-test TEST=hotspot_loom

      #
      # Internal Error (/home/zgu/ws/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp:2666), pid=717559, tid=717606
      # Error: assert(new_mem->outcnt() > 0) failed
      #
      # JRE version: OpenJDK Runtime Environment (19.0) (fastdebug build 19-internal-adhoc.zgu.jdk)
      # Java VM: OpenJDK 64-Bit Server VM (fastdebug 19-internal-adhoc.zgu.jdk, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, shenandoah gc, linux-amd64)
      # Problematic frame:
      # V [libjvm.so+0x1a17564] MemoryGraphFixer::fix_mem(Node*, Node*, Node*, Node*, Node*, Unique_Node_List&)+0xc14







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              Assignee:
              roland Roland Westrelin
              Reporter:
              zgu Zhengyu Gu
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                Dates

                Created:
                Updated:
                Resolved: