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  1. JDK
  2. JDK-8309371

[GenShen] TestAllocHumongousFragment#generation failed



    • gc


      Reported by Martin Doerr:
      (Also seen on RISCV.)

      I’ve seen a new problem on the PPC64 machine which uses 64k pages (see TestAllocOutOfMemory.java#large).

      The new failure is in gc/TestAllocHumongousFragment.java#generational.
      # Internal Error (src/hotspot/share/gc/shenandoah/shenandoahVerifier.cpp:1244), pid=3817786, tid=3817805
      # Error: Verify init-mark remembered set violation; clean card should be dirty
      Referenced from:
        interior location: 0x00000000ffe007fc
        inside Java heap
          not in collection set
        region: | 2044|R |O|BTE ffe00000, ffe79b28, ffe80000|TAMS ffe00000|UWM ffe79b28|U 486K|T 0B|G 0B|P 0B|S 486K|L 486K|CP 0
        0x00000000f3080000 - klass 0x00000008000028c8 [I
          not allocated after mark start
          not after update watermark
          not marked strong
          not marked weak
          not in collection set
        age: 0
        mark: mark(is_neutral no_hash age=0)
        region: | 1633|H |Y|BTE f3080000, f3100000, f3100000|TAMS f3100000|UWM f3100000|U 512K|T 0B|G 0B|P 0B|S 512K|L 0B|CP 0
        (the object itself)
      Current thread (0x00007fffa833c6f0): VMThread "VM Thread" [id=3817805, stack(0x00007fff887d0000,0x00007fff889d0000) (2048K)]
      V [libjvm.so+0xb0b4c0] report_vm_error(char const*, int, char const*)+0x30 (debug.cpp:147)
      V [libjvm.so+0x18ce57c] ShenandoahAsserts::print_failure(ShenandoahAsserts::SafeLevel, oop, void*, oop, char const*, char const*, char const*, int)+0x22c (shenandoahAsserts.cpp:169)
      V [libjvm.so+0x1ae978c] void ShenandoahVerifyRemSetClosure::work<narrowOop>(narrowOop*)+0x29c (shenandoahVerifier.cpp:1246)
      V [libjvm.so+0x1ae9e00] void OopOopIterateDispatch<ShenandoahVerifyRemSetClosure>::Table::oop_oop_iterate<ObjArrayKlass, narrowOop>(ShenandoahVerifyRemSetClosure*, oop, Klass*)+0x2d0 (shenandoahVerifier.cpp:1253)
      V [libjvm.so+0x1ae0420] ShenandoahVerifier::verify_rem_set_before_mark()+0x530 (iterator.inline.hpp:295)
      V [libjvm.so+0x1ae111c] ShenandoahVerifier::verify_at_safepoint(char const*, ShenandoahVerifier::VerifyRememberedSet, ShenandoahVerifier::VerifyForwarded, ShenandoahVerifier::VerifyMarked, ShenandoahVerifier::VerifyCollectionSet, ShenandoahVerifier::VerifyLiveness, ShenandoahVerifier::VerifyRegions, ShenandoahVerifier::VerifySize, ShenandoahVerifier::VerifyGCState)+0x6fc (shenandoahVerifier.cpp:866)
      V [libjvm.so+0x1ae1bcc] ShenandoahVerifier::verify_before_concmark()+0x4c (shenandoahVerifier.cpp:1015)
      V [libjvm.so+0x191ed30] ShenandoahConcurrentGC::op_init_mark()+0x2f0 (shenandoahConcurrentGC.cpp:666)
      V [libjvm.so+0x1921178] ShenandoahConcurrentGC::entry_init_mark()+0xb8 (shenandoahConcurrentGC.cpp:334)
      V [libjvm.so+0x1add2b8] VM_ShenandoahInitMark::doit()+0x48 (shenandoahVMOperations.cpp:53)
      VM_Operation (0x00007fff88ede150): Shenandoah Init Marking, mode: safepoint, requested by thread 0x00007fffa81a21a0
      GC Precious Log:
      CardTable entry size: 512
      CPUs: 128 total, 64 available
      Memory: 123G
      Large Page Support: Disabled
      NUMA Support: Disabled
      Compressed Oops: Enabled (32-bit)
      Heap Min Capacity: 1G
      Heap Initial Capacity: 1G
      Heap Max Capacity: 1G
      Pre-touch: Disabled
      Parallel Workers: 32
      Concurrent Workers: 16
      Shenandoah Heap
      1024M max, 1024M soft max, 1024M committed, 950M used
      2048 x 512K regions
      Status: cancelled
      Reserved region:
      - [0x00000000c0000000, 0x0000000100000000)
      Collection set:
      - map (vanilla): 0x0000000000011800
      - map (biased): 0x0000000000010000
      Event: 19.833 Pause Init Mark (YOUNG)
      Event: 19.921 Pause Init Mark (YOUNG) done
      Event: 19.921 Concurrent remembered set scanning
      Event: 19.922 Concurrent remembered set scanning done
      Event: 19.922 Concurrent marking roots
      Event: 19.924 Concurrent marking roots done
      Event: 19.924 Concurrent marking (YOUNG)
      Event: 19.924 Thread 0x00007fff48001b70 Thread added: 0x00007fff48001b70
      Event: 19.924 Protecting memory [0x00007fff78e00000,0x00007fff78e30000] with protection modes 0
      Event: 19.924 Thread 0x00007fff48002f50 Thread added: 0x00007fff48002f50
      Event: 19.924 Protecting memory [0x00007fff78a00000,0x00007fff78a30000] with protection modes 0
      Event: 19.935 Concurrent marking (YOUNG) done
      Event: 19.936 Pause Final Mark (YOUNG)
      Event: 19.951 Pause Final Mark (YOUNG) done
      Event: 19.952 Concurrent weak references
      Event: 19.952 Concurrent weak references done
      Event: 19.952 Concurrent weak roots
      Event: 19.953 Concurrent weak roots done
      Event: 19.954 Concurrent cleanup
      Event: 19.966 Concurrent cleanup done
      Event: 19.967 Pause Final Roots
      Event: 19.967 Pause Final Roots done
      Event: 19.979 Concurrent reset
      Event: 19.985 Thread 0x00007fffa84cf5f0 Cancelling GC: Allocation Failure
      Event: 19.985 Concurrent reset done
      Event: 19.986 Pause Init Mark (YOUNG)


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              ysr Y. Ramakrishna
              ysr Y. Ramakrishna
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