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  1. RHEL
  2. RHEL-8747

[Testonly]crash tool supports parsing the maple tree data structures and functions

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      Description of problem:

      The maple tree is introduced into upstream kernel 6.1:
      [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=524e00b36e8c547f5582eef3fb645a8d9fc5e3df
      [2]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=763ecb035029f500d7e6dc99acd1ad299b7726a1

      Crash tool needs to support parsing the vmcore with a maple tree feature, otherwise some crash commands may not work, such as vm and fuser.

      In ddition, the tree command can also dump the maple tree information.

      Related crash patches:

      872cad2d63b3 ("Port the maple tree data structures and functions")
      16a696762cbf ("Add maple tree support to "tree" command")
      222176a0a6c1 ("Add do_maple_tree() for maple tree operations")
      9efc1f68a44f ("Introduce maple tree vma iteration to vm_area_dump()")
      49f6c2095d82 ("Update the help text of "tree" command for maple tree")
      46344aa2f92b ("Dump maple tree offset variables by "help -o"")

      Version-Release number of selected component (if applicable):

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      Actual results:

      Expected results:

      Additional info:

            ltao@redhat.com Liu Tao
            lijiang@redhat.com Lianbo Jiang
            Liu Tao Liu Tao
            Xiaoying Yan Xiaoying Yan
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              Created:
              Updated: