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  1. JDK
  2. JDK-8026303

CMS: JVM intermittently crashes with "FreeList of size 258 violates Conservation Principle" assert

    Details

    • Subcomponent:
      gc
    • Resolved In Build:
      b29
    • CPU:
      generic
    • OS:
      generic

      Backports

        Description

        JVM intermittently fails with following assert with test on Max/MinHeapFreeRatio flags:

        #
        # A fatal error has been detected by the Java Runtime Environment:
        #
        # Internal Error (/HUDSON/workspace/8-2-build-linux-i586/jdk8/367/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/adaptiveFreeList.cpp:162), pid=3087, tid=3077081968
        # assert((_allocation_stats.prev_sweep() + _allocation_stats.split_births() + _allocation_stats.coal_births() + 1) >= (_allocation_stats.split_deaths() + _allocation_stats.coal_deaths() + (ssize_t)count())) failed: FreeList 0x9d0bac08 of size 258 violates Conservation Principle: prev_sweep(1) + split_births(1) + coal_births(1) + 1 >= split_deaths(2) coal_deaths(0) + count(2)
        #
        # JRE version: Java(TM) SE Runtime Environment (8.0-b110) (build 1.8.0-ea-fastdebug-b110)
        # Java VM: Java HotSpot(TM) Server VM (25.0-b52-fastdebug compiled mode linux-x86 )
        # Core dump written. Default location: /tmp/core or core.3087
        #
        # If you would like to submit a bug report, please visit:
        # http://bugreport.sun.com/bugreport/crash.jsp
        #

        --------------- T H R E A D ---------------

        Current thread (0xb7511800): GCTaskThread [stack: 0xb7608000,0xb7689000] [id=3091]

        Stack: [0xb7608000,0xb7689000], sp=0xb76877c0, free space=509k
        Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
        V [libjvm.so+0xcbcef5] VMError::report_and_die()+0x185
        V [libjvm.so+0x5929a8] report_vm_error(char const*, int, char const*, char const*)+0x68
        V [libjvm.so+0x2a7175] AdaptiveFreeList<FreeChunk>::verify_stats() const+0x95
        V [libjvm.so+0x503240] CompactibleFreeListSpace::par_get_chunk_of_blocks(unsigned int, unsigned int, AdaptiveFreeList<FreeChunk>*)+0xa70
        V [libjvm.so+0x50356d] CFLS_LAB::get_from_global_pool(unsigned int, AdaptiveFreeList<FreeChunk>*)+0x9d
        V [libjvm.so+0x50381c] CFLS_LAB::alloc(unsigned int)+0x1ec
        V [libjvm.so+0x561997] ConcurrentMarkSweepGeneration::expand_and_par_lab_allocate(CMSParGCThreadState*, unsigned int)+0x57
        V [libjvm.so+0x568b7b] ConcurrentMarkSweepGeneration::par_promote(int, oopDesc*, markOopDesc*, unsigned int)+0x4fb
        V [libjvm.so+0xacfb40] ParNewGeneration::copy_to_survivor_space_avoiding_promotion_undo(ParScanThreadState*, oopDesc*, unsigned int, markOopDesc*)+0x8a0
        V [libjvm.so+0x743508] void ParScanClosure::do_oop_work<oopDesc*>(oopDesc**, bool, bool)+0x158
        V [libjvm.so+0x732fc2] InstanceKlass::oop_oop_iterate_nv(oopDesc*, ParScanWithBarrierClosure*)+0xa2
        V [libjvm.so+0xad00da] ParScanThreadState::trim_queues(int)+0x1aa
        V [libjvm.so+0xad01f2] ParEvacuateFollowersClosure::do_void()+0x22
        V [libjvm.so+0xad0bee] ParNewGenTask::work(unsigned int)+0x1ee
        V [libjvm.so+0xd00bdb] GangWorker::loop()+0x30b
        V [libjvm.so+0xcff428] GangWorker::run()+0x18
        V [libjvm.so+0xaa82e9] java_start(Thread*)+0x119
        C [libpthread.so.0+0x69e9] abort@@GLIBC_2.0+0x69e9

        Failed test loading and unloading certain amount of data and verifies that old gen resized to fit into Max/MinHeapFreeSizeRatio values:
        http://cr.openjdk.java.net/~kshefov/8025166/webrev.01/raw_files/new/test/gc/arguments/TestMaxMinHeapFreeRatioFlags.java

        I've attached a reproducer extracted from this test.

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                • Assignee:
                  jmasa Jon Masamitsu (Inactive)
                  Reporter:
                  fzhinkin Filipp Zhinkin
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                  Dates

                  • Created:
                    Updated:
                    Resolved: