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  1. JDK
  2. JDK-6538488

CMS: crashed in removeChunkReplaceIfNeeded


    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 6u1, 6u16
    • Fix Version/s: 7
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • CPU:
      generic, x86
    • OS:
      generic, solaris


      I saw the following crash when I run product build jdk6U1 b05 on ATG app with CMS gc. It happened after running for about 35 hours, but I couldn't reproduce it since then.

      Here is Ramki's comment regarding the crash:
      some of the code related to these methods was indeed
      touched somewhat recently in relation to CR 6459113, which was
      recently backported to 6u1. [FWIW, the same changes are present
      in 7.0, 5u10 and 1.4.2_14 as well.]

      The webrev for this set of changes in 6u1 can be found here:


      In particular look at the changes in compactibleFreeListSpace.cpp.

      Testing information:
      hostname: jtg-i119.sfbay.sun.com (it is a hyperthread enabled machine)
      SunOS jtg-i119 5.10 Generic_118855-36 i86pc i386 i86pc
      VM option: "-server -XX:+UseConcMarkSweepGC"

      log/core file location: /bt/atgrun.6807.-server
      -rw-r--r-- 1 root root 7422998 Mar 15 00:03 atgserver.log
      -rw-r--r-- 1 root root 205737145 Mar 16 11:02 core.8343

      bash-3.00# tail atgserver.log
      Unexpected Error
      SIGSEGV (0xb) at pc=0xd0a3a777, pid=8343, tid=6

      Do you want to debug the problem?

      To debug, run 'dbx - 8343'; then switch to thread 6
      Enter 'yes' to launch dbx automatically (PATH must include dbx)
      Otherwise, press RETURN to abort...

      (dbx) where
      current thread: t@6
      =>[1] ___nanosleep(0xcd298c58, 0xcd298c60), at 0xd0f303d5
      [2] _sleep(0x64), at 0xd0f24a33
      [3] os::message_box(0xd0d93f99, 0xd0e21900), at 0xd0c42ace
      [4] VMError::show_message_box(0xcd298f14, 0xd0e21900, 0x7d0), at 0xd0cd2f3d
      [5] VMError::report_and_die(0xcd298f14), at 0xd0cd29bf
      [6] JVM_handle_solaris_signal(0xb, 0xcd299234, 0xcd299034, 0x1), at 0xd08f1704
      [7] signalHandler(0xb, 0xcd299234, 0xcd299034), at 0xd08f0fce
      [8] __sighndlr(0xb, 0xcd299234, 0xcd299034, 0xd08f0fa8), at 0xd0f3014f
      ---- called from signal handler with signal 11 (SIGSEGV) ------
      [9] TreeList::removeChunkReplaceIfNeeded(0x200023, 0xc54d49c0), at 0xd0a3a777
      [10] BinaryTreeDictionary::removeChunkFromTree(0x8076950, 0xc54d49c0), at 0xd0a3ac8f
      [11] BinaryTreeDictionary::getChunkFromTree(0x8076950, 0x100, 0x0, 0x0), at 0xd0a3abae
      [12] BinaryTreeDictionary::getChunk(0x8076950, 0x100, 0x0), at 0xd0a3c0fa
      [13] CompactibleFreeListSpace::par_get_chunk_of_blocks(0x80bac10, 0x10, 0x10, 0x80c541c), at 0xd0a6ff78
      [14] CFLS_LAB::alloc(0x80c4e58, 0x10), at 0xd0a6fb6a
      [15] ConcurrentMarkSweepGeneration::par_promote(0x80bab08, 0x0, 0xc1e988c8, 0x21, 0x10), at 0xd0a7b24d
      [16] ParNewGeneration::copy_to_survivor_space_avoiding_promotion_undo(0x8078ed8, 0xcd299ae0, 0xc1e988c8, 0x10, 0x21, 0x0), at 0xd0c4a3fb
      [17] ParScanClosure::do_oop_work(0xcd299c6c, 0xc5426168, 0x1, 0x0, 0x0), at 0xd0acf52f
      [18] instanceKlass::oop_oop_iterate_nv(0xc900c730, 0xc5426160, 0xcd299c6c), at 0xd0acb4f9
      [19] ParScanThreadState::trim_queues(0xcd299ae0, 0x28), at 0xd0c48f0d
      [20] ParScanClosure::do_oop_work(0xcd299cb4, 0xc3c61bac, 0x1, 0x1, 0x0), at 0xd0acf552
      [21] ParRootScanWithBarrierTwoGensClosure::do_oop(0xcd299cb4, 0xc3c61bac), at 0xd0c4add6
      [22] objArrayKlass::oop_oop_iterate_nv_m(0xc908e650, 0xc3c5f590, 0xcd2996e0, 0xcd299638), at 0xd0c3cc68
      [23] FreeListSpace_DCTOC::walk_mem_region_with_cl_par(0x80787a8, 0xcd299690, 0xc3c5f590, 0xc3c61e00, 0xcd2996e0), at 0xd0a6c057
      [24] FreeListSpace_DCTOC::walk_mem_region_with_cl(0x80787a8, 0xcd2996d0, 0xc3c5f590, 0xc3c61e00, 0xcd2996e0), at 0xd0a6bf1f
      [25] Filtering_DCTOC::walk_mem_region(0x80787a8, 0xcd299738, 0xc3c5f590, 0xc3c61e00), at 0xd0c8206b
      [26] DirtyCardToOopClosure::do_MemRegion(0x80787a8, 0xcd299778), at 0xd0c81ea9
      [27] ClearNoncleanCardWrapper::do_MemRegion(0xcd2999c0, 0xcd2997e8), at 0xd0a43925
      [28] CardTableModRefBS::non_clean_card_iterate_work(0x8078e78, 0xcd299868, 0xcd2999c0, 0x0), at 0xd0a42293
      [29] CardTableModRefBS::process_stride(0x8078e78, 0x80bac10, 0xcd2998f8, 0x3, 0x8, 0x80787a8, 0xcd2999c0, 0x0, 0x82da598, 0xcd1ff0, 0x1c5), at 0xd0a42974
      [30] CardTableModRefBS::par_non_clean_card_iterate_work(0x8078e78, 0x80bac10, 0xcd299960, 0x80787a8, 0xcd2999c0, 0x0, 0x4), at 0xd0a42390
      [31] CardTableModRefBS::non_clean_card_iterate(0x8078e78, 0x80bac10, 0xcd2999b8, 0x80787a8, 0xcd2999c0, 0x0), at 0xd0a41fb7
      [32] CardTableRS::younger_refs_in_space_iterate(0x8078e70, 0x80bac10, 0xcd299cb4), at 0xd0a430a5
      [33] Generation::younger_refs_in_space_iterate(0x80bab08, 0x80bac10, 0xcd299cb4), at 0xd0abdc15
      [34] ConcurrentMarkSweepGeneration::younger_refs_iterate(0x80bab08, 0xcd299cb4), at 0xd0a7dd91
      [35] CardTableRS::younger_refs_iterate(0x8078e70, 0x80bab08, 0xcd299cb4), at 0xd0a42fa4
      [36] GenCollectedHeap::gen_process_strong_roots(0x8074208, 0x0, 0x1, 0x0, 0x1, 0xcd299cb4, 0xcd299c90), at 0xd0ab7b4d
      [37] ParNewGenTask::work(0xcd1329bc, 0x0), at 0xd0c49560
      [38] GangWorker::loop(0x8078000), at 0xd0cd6504
      [39] GangWorker::run(0x8078000), at 0xd0cd63ef
      [40] java_start(0x8078000), at 0xd0c403eb
      [41] _thr_setup(0xcd320c00), at 0xd0f2fd46
      [42] _lwp_start(), at 0xd0f30030
      In view of the recently reported crashes with this signature seen
      with some frequency on 6u11 and with greater frequency on 6u16,
      where the customer was using a fixed size heap, the conjecture
      in the display above, linking this to the changeset for 6459113,
      is incorrect and is a different issue.

      Customer will be checking if:
      (1) problem reproduces with 6u16 with -XX:-UseParNewGC, and
      (2) problem reproduces with hs17 jvm


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              • Assignee:
                ysr Y. Ramakrishna
                ltansunw Li Tan (Inactive)
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