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  1. JDK
  2. JDK-6920725

Hung in CompactibleFreeListSpace::block_size from ::block_start_unsafe()

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P2 P2
    • 6-pool
    • 6u16
    • hotspot
    • gc
    • sparc
    • solaris_10

      Application is hanging in this stack trace(see below),
      and only happen 1 time in production.
      kill -3, jstack, ... do not work.

      It may be related to CR6872049 CompactibleFreeListSpace::block_size from ::block_start_unsafe() except that this issue is a hang
      and not a crash.

      ----------------- lwp# 12 / thread# 12 --------------------
      ffffffff7e3af144 __1cYCompactibleFreeListSpaceKblock_size6kMpknIHeapWord__L_ (4
      c148, ffffffff7eb08ae8, 6a800, ffffffff7ea9e000, 6eef1c, 4c000) + 64
      ffffffff7e35131c __1cbEBlockOffsetArrayNonContigSpaceSblock_start_unsafe6kMpkv_
      pnIHeapWord__ (fffffffdb9036000, fffffffdb95a0000, 10026ec98, ffffffff73c00000,
      fffffffdb9036000, ffffffff7ea9e000) + cc
      ffffffff7e7006d8 __1cRCardTableModRefBSYprocess_chunk_boundaries6MpnFSpace_pnVD
      irtyCardToOopClosure_nJMemRegion_5ppWLL_v_ (10012df10, 10026ec20, 100ab5200, fff
      ffffdb95a0000, ffffffff7e3b6120, 102a4f900) + 50
      ffffffff7e7003b8 __1cRCardTableModRefBSbFpar_non_clean_card_iterate_work6MpnFSp
      ace_nJMemRegion_pnVDirtyCardToOopClosure_pnQMemRegionClosure_bi_v_ (10012df10, f
      ffffffdb9580000, ffffffff75000ff0, 14, 0, 1400) + 190
      ffffffff7e359c9c __1cRCardTableModRefBSWnon_clean_card_iterate6MpnFSpace_nJMemR
      egion_pnVDirtyCardToOopClosure_pnQMemRegionClosure_b_v_ (10012df10, 10026ec20, f
      fffffff79bffb10, 100ab5200, ffffffff79bffb20, fffffffd5d000000) + 6c
      ffffffff7e35b3e4 __1cLCardTableRSbDyounger_refs_in_space_iterate6MpnFSpace_pnQO
      opsInGenClosure__v_ (1001104b0, 10026ec20, ffffffff7e3ae7f8, ffffffff7eae15a0, 7
      42cb4, ffffffff7ea9e000) + 9c
      ffffffff7e3da168 __1cbDConcurrentMarkSweepGenerationUyounger_refs_iterate6MpnQO
      opsInGenClosure__v_ (10011a980, 1001104b0, fffffffd5d000000, 6c3c00, ffffffff7e3
      da118, 102f3ce20) + 50
      ffffffff7e477800 __1cQGenCollectedHeapYgen_process_strong_roots6MibbnKSharedHea
      pOScanningOption_pnQOopsInGenClosure_4_v_ (10011d8e0, 2, 1, 0, 10011d970, 102f3c
      e20) + 120
      ffffffff7e703db4 __1cNParNewGenTaskEwork6Mi_v_ (ffffffff75eff180, 5, 10011b430,
      102f3cc90, 0, 100aba5b8) + 164
      ffffffff7e81adc4 __1cKGangWorkerEloop6M_v_ (10012c800, 0, 10011c900, 1, 10011d9
      f0, 1831c) + 84
      ffffffff7e6f1680 java_start (10012c800, 751, ffffffff7eaffbdc, ffffffff7ea9e000

      java options
      -d64 -server -Xms512m -Xmx8080m -XX:MaxPermSize=512m -Xss2m -verbosegc
      -XX:NewRatio=3 -XX:SurvivorRatio=4 -XX:+UseCMSCompactAtFullCollection
      -XX:CMSFullGCsBeforeCompaction=0 -XX:+ParallelRefProcEnabled
      -XX:+ExplicitGCInvokesConcurrent -XX:SoftRefLRUPolicyMSPerMB=0
      -XX:ParallelGCThreads=10 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC
      -XX:+CMSClassUnloadingEnabled -Dsun.rmi.dgc.client.gcInterval=900000
      -Dsun.rmi.dgc.server.gcInterval=900000

      Filing this bug for further evaluation by engineering.

            minqi Yumin Qi
            kbteo Kim Teo
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