[Bug 1548051] Re: baloo takes up most of my CPU

[Philippe Le Rohellec]

It's happening on 16.10 with the following Baloo packages:

# dpkg -l | grep baloo
ii  baloo-kf5                                       5.28.0-0ubuntu1~ubuntu16.10~ppa1              amd64        framework for searching and managing metadata
ii  baloo-utils                                     4:4.14.3-0ubuntu5                             amd64        framework for searching and managing metadata.
ii  libbaloocore4                                   4:4.14.3-0ubuntu5                             amd64        Core funcationality for Baloo
ii  libbaloofiles4                                  4:4.14.3-0ubuntu5                             amd64        Files funcationality for Baloo
ii  libbalooxapian4                                 4:4.14.3-0ubuntu5                             amd64        Xapian funcationality for Baloo
ii  libkf5baloo5                                    5.28.0-0ubuntu1~ubuntu16.10~ppa1              amd64        framework for searching and managing metadata core lib.
ii  libkf5balooengine5                              5.28.0-0ubuntu1~ubuntu16.10~ppa1              amd64        framework for searching and managing metadata plugins
ii  libkf5baloowidgets-bin                          4:16.04.3-0ubuntu1                            amd64        Wigets for use with Baloo - binaries
ii  libkf5baloowidgets5:amd64                       4:16.04.3-0ubuntu1                            amd64        Wigets for use with Baloo

strace on the baloo_file_extractor process that's using 100% cpu shows an infinite string of "brk" calls:
brk(0x561794fb7000)                     = 0x561794fb7000
brk(0x561794ccb000)                     = 0x561794ccb000
brk(0x561794e41000)                     = 0x561794e41000
brk(0x561794fb7000)                     = 0x561794fb7000
brk(0x561794ccb000)                     = 0x561794ccb000
brk(0x561794e41000)                     = 0x561794e41000
brk(0x561794fb7000)                     = 0x561794fb7000
brk(0x561794ccb000)                     = 0x561794ccb000
brk(0x561794e41000)                     = 0x561794e41000
brk(0x561794fb7000)                     = 0x561794fb7000
brk(0x561794ccb000)                     = 0x561794ccb000
brk(0x561794e41000)                     = 0x561794e41000
brk(0x561794fb7000)                     = 0x561794fb7000
brk(0x561794ccb000)                     = 0x561794ccb000
brk(0x561794e41000)                     = 0x561794e41000
brk(0x561794fb7000)                     = 0x561794fb7000
brk(0x561794ccb000)                     = 0x561794ccb000
brk(0x561794e41000)                     = 0x561794e41000
brk(0x561794fb7000)                     = 0x561794fb7000

This is likely the cause of 2 complete lockups of my machines during the
past 7 days.

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Title:
  baloo takes up most of my CPU

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