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  1. JDK
  2. JDK-8284045

serviceability/sa/ClhsdbFindPC.java#xcomp-core is failing with ZGC - sun.jvm.hotspot.debugger.UnalignedAddressException: 8baadbabe

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    Details

    • Type: Bug
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 19
    • Fix Version/s: tbd
    • Component/s: hotspot
    • Labels:
      None

      Description

      Right at the start of the test it fails:

      Opening core file, please wait...
      hsdb> hsdb> + verbose true
      hsdb> + jstack -v
      Deadlock Detection:

      No deadlocks found.

      "hsdb> + quit
      sun.jvm.hotspot.debugger.UnalignedAddressException: 8baadbabe
      at jdk.hotspot.agent/sun.jvm.hotspot.debugger.windbg.WindbgDebuggerLocal$1.checkAlignment(WindbgDebuggerLocal.java:106)
      at jdk.hotspot.agent/sun.jvm.hotspot.debugger.DebuggerBase.readCInteger(DebuggerBase.java:357)
      at jdk.hotspot.agent/sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(DebuggerBase.java:462)
      at jdk.hotspot.agent/sun.jvm.hotspot.debugger.windbg.WindbgDebuggerLocal.readAddress(WindbgDebuggerLocal.java:312)
      at jdk.hotspot.agent/sun.jvm.hotspot.debugger.windbg.WindbgAddress.getAddressAt(WindbgAddress.java:71)
      at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicTypeDataBase.findDynamicTypeForAddress(BasicTypeDataBase.java:238)
      at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:104)
      at jdk.hotspot.agent/sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:77)
      at jdk.hotspot.agent/sun.jvm.hotspot.oops.Oop.getKlassForOopHandle(Oop.java:212)
      at jdk.hotspot.agent/sun.jvm.hotspot.oops.ObjectHeap.newOop(ObjectHeap.java:181)
      at jdk.hotspot.agent/sun.jvm.hotspot.oops.VMOopHandle.resolve(VMOopHandle.java:61)
      at jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.getThreadObj(JavaThread.java:355)
      at jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.getCurrentParkBlocker(JavaThread.java:407)
      at jdk.hotspot.agent/sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:80)
      at jdk.hotspot.agent/sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:39)
      at jdk.hotspot.agent/sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:62)
      at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor$27.doit(CommandProcessor.java:1153)
      at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2212)
      at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2182)
      at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.run(CommandProcessor.java:2053)
      at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.run(CLHSDB.java:112)
      at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.main(CLHSDB.java:44)
      at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runCLHSDB(SALauncher.java:281)
      at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:500)

      This just started the past day. 5 failures already. The test task JVM args are:

      -XX:+CreateCoredumpOnCrash -XX:+UseZGC

      Virtual threads are not involved (no vthread wrapper).

      Note the following two frames and the stack trace above them:

      at jdk.hotspot.agent/sun.jvm.hotspot.oops.Oop.getKlassForOopHandle(Oop.java:212)
      at jdk.hotspot.agent/sun.jvm.hotspot.oops.ObjectHeap.newOop(ObjectHeap.java:181)

      This is the same as what we are seeing with JDK-8283578. However, JDK-8283578 is been going on for a while now, where as this issue just started in the past day. Also, JDK-8283578 is with -Xcomp test tasks, not ZGC.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              cjplummer Chris Plummer
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                Dates

                Created:
                Updated: