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  1. JDK
  2. JDK-8344107

Shenandoah: "embedded oops must be OK" assert failure

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P4 P4
    • tbd
    • 24
    • hotspot
    • gc

      I see this when running:

      gc/stringdedup/TestStringDeduplicationInterned.java

      with:

      -Xcomp -XX:CompileThreshold=100

      Failure is intermittent but it seems to be fairly easy to reproduce.

      *** non-oop 0x00000000fbf80558 found at 0x00007f55ffe36536 (offset 558)
      *** non-oop 0x00000000fbf80558 found at 0x00007f55ffe36554 (offset 588)
      *** non-oop 0x00000000fbf80558 found at 0x00007f55ffe36698 (offset 912)
      #
      # A fatal error has been detected by the Java Runtime Environment:
      #
      # Internal Error (/home/roland/jdk-jdk/src/hotspot/share/code/nmethod.cpp:2950), pid=2778052, tid=2778072
      # assert(voc.ok()) failed: embedded oops must be OK
      #
      # JRE version: OpenJDK Runtime Environment (24.0) (fastdebug build 24-internal-adhoc.roland.jdk-jdk)
      # Java VM: OpenJDK 64-Bit Server VM (fastdebug 24-internal-adhoc.roland.jdk-jdk, compiled mode, sharing, tiered, compressed oops, compressed class ptrs, shenandoah gc, linux-amd64)
      # Problematic frame:
      # V [libjvm.so+0x1537158] nmethod::verify()+0x488
      #
      # Core dump will be written. Default location: Core dumps may be processed with "/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h" (or dumping to /home/roland/tmp/core.2778052)
      #
      # An error report file with more information is saved as:
      # /home/roland/tmp/hs_err_pid2778052.log
      #
      # If you would like to submit a bug report, please visit:
      # https://bugreport.java.com/bugreport/crash.jsp
      #

            shade Aleksey Shipilev
            roland Roland Westrelin
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              Created:
              Updated: