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#1 Yesterday 21:24:37

shaurz
Member
Registered: 2004-02-02
Posts: 364

baloo_file_extr crashing several times a second

baloo_file_extr process is crashing several times every second on my machine. My current workaround is to pause the indexer in Settings.

Crash log:

           PID: 30358 (baloo_file_extr)
           TID: 30358 (baloo_file_extr)
           UID: 1000 (ljmcc)
           GID: 1000 (ljmcc)
        Signal: 6 (ABRT) si_code: SI_TKILL
     Timestamp: Thu 2026-10-15 22:21:59 BST (1s ago)
  Command Line: /usr/lib/kf6/baloo_file_extractor
    Executable: /usr/lib/kf6/baloo_file_extractor
 Control Group: /user.slice/user-1000.slice/user@1000.service/background.slice/kde-baloo.service
          Unit: user@1000.service
     User Unit: kde-baloo.service
         Slice: user-1000.slice
     Owner UID: 1000 (ljmcc)
       Boot ID: 6ae1ab781de14a7c814ba82569fc7e0a
    Machine ID: 60a1dae040234189a529ecc0c8c25596
      Hostname: archimedes
       Storage: /var/lib/systemd/coredump/core.baloo_file_extr.1000.6ae1ab781de14a7c814ba82569fc7e0a.30358.1792099319000000.zst (present)
  Size on Disk: 716.9K
       Message: Process 30358 (baloo_file_extr) of user 1000 dumped core.
                
                Stack trace of thread 30358:
                #0  0x00007f77d029a11c n/a (libc.so.6 + 0x9a11c)
                #1  0x00007f77d023e5d0 raise (libc.so.6 + 0x3e5d0)
                #2  0x00007f77d0225685 abort (libc.so.6 + 0x25685)
                #3  0x00007f77d0a99bfe n/a (libQt6Core.so.6 + 0x99bfe)
                #4  0x00007f77d0a9a369 _ZNK14QMessageLogger5fatalEPKcz (libQt6Core.so.6 + 0x9a369)
                #5  0x00007f77d13b228b _ZN22QGuiApplicationPrivate25createPlatformIntegrationEv (libQt6Gui.so.6 + 0x1b228b)
                #6  0x00007f77d13b38c8 _ZN22QGuiApplicationPrivate21createEventDispatcherEv (libQt6Gui.so.6 + 0x1b38c8)
                #7  0x00007f77d0b8ee15 _ZN23QCoreApplicationPrivate4initEv (libQt6Core.so.6 + 0x18ee15)
                #8  0x00007f77d13b39cb _ZN22QGuiApplicationPrivate4initEv (libQt6Gui.so.6 + 0x1b39cb)
                #9  0x00007f77d13a92ae _ZN15QGuiApplicationC2ERiPPci (libQt6Gui.so.6 + 0x1a92ae)
                #10 0x000055e18c504388 n/a (baloo_file_extractor + 0x8388)
                #11 0x00007f77d0227781 n/a (libc.so.6 + 0x27781)
                #12 0x00007f77d02278b9 __libc_start_main (libc.so.6 + 0x278b9)
                #13 0x000055e18c504625 n/a (baloo_file_extractor + 0x8625)
                
                Stack trace of thread 30362:
                #0  0x00007f77d02a08f2 n/a (libc.so.6 + 0xa08f2)
                #1  0x00007f77d0311ac2 read (libc.so.6 + 0x111ac2)
                #2  0x00007f77d0004551 n/a (libglib-2.0.so.0 + 0xbb551)
                #3  0x00007f77cffae43e n/a (libglib-2.0.so.0 + 0x6543e)
                #4  0x00007f77cffb3ae3 n/a (libglib-2.0.so.0 + 0x6aae3)
                #5  0x00007f77cffb3db5 g_main_context_iteration (libglib-2.0.so.0 + 0x6adb5)
                #6  0x00007f77d0ec4d22 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x4c4d22)
                #7  0x00007f77d0b96a74 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x196a74)
                #8  0x00007f77d0cc4a02 _ZN7QThread4execEv (libQt6Core.so.6 + 0x2c4a02)
                #9  0x00007f77d0969781 n/a (libQt6DBus.so.6 + 0x38781)
                #10 0x00007f77d0d78fdb n/a (libQt6Core.so.6 + 0x378fdb)
                #11 0x00007f77d0298042 n/a (libc.so.6 + 0x98042)
                #12 0x00007f77d032072c n/a (libc.so.6 + 0x12072c)
                ELF object binary architecture: AMD x86-64
-- Notice: 1 systemd-coredump@.service unit is running, output may be incomplete.

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#2 Yesterday 21:25:19

shaurz
Member
Registered: 2004-02-02
Posts: 364

Re: baloo_file_extr crashing several times a second

Installed package for baloo is 6.31.0-1

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#3 Yesterday 21:45:58

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,346

Re: baloo_file_extr crashing several times a second

https://wiki.archlinux.org/title/Debuginfod

Also

Signal: 6 (ABRT) si_code: SI_TKILL

Any abort messages in the journal?

#5  0x00007f77d13b228b _ZN22QGuiApplicationPrivate25createPlatformIntegrationEv (libQt6Gui.so.6 + 0x1b228b)

Are you by any chance exporting QT_QPA_PLATFORM?

printenv

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#4 Yesterday 21:55:36

shaurz
Member
Registered: 2004-02-02
Posts: 364

Re: baloo_file_extr crashing several times a second

Oct 15 22:51:12 archimedes baloo_file[1347]: Extractor crashed
Oct 15 22:51:12 archimedes baloo_file_extractor[45206]: Failed to create wl_display (No such file or directory)
Oct 15 22:51:12 archimedes baloo_file_extractor[45206]: Could not load the Qt platform plugin "wayland" in "" even though it was found.
Oct 15 22:51:12 archimedes baloo_file_extractor[45206]: could not connect to display 
Oct 15 22:51:12 archimedes baloo_file_extractor[45206]: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.
Oct 15 22:51:12 archimedes baloo_file_extractor[45206]: Could not load the Qt platform plugin "xcb" in "" even though it was found.
Oct 15 22:51:12 archimedes baloo_file_extractor[45206]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
                                                        
                                                        Available platform plugins are: minimal, vkkhrdisplay, wayland-brcm, wayland-egl, wayland, offscreen, linuxfb, vnc, minimalegl, xcb, eglfs.
Oct 15 22:51:12 archimedes systemd-coredump[45212]: [?] Process 45206 (baloo_file_extr) of user 1000 dumped core.

I checked my environment, I don't appear to be setting QT_QPA_PLATFORM.

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#5 Yesterday 22:01:33

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,346

Re: baloo_file_extr crashing several times a second

printenv | grep -iE 'display|xdg'

plasma ditched X11 support, if you're trying to run baloo on a different kind of (X11) session that might be a problem.

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#6 Yesterday 22:02:30

shaurz
Member
Registered: 2004-02-02
Posts: 364

Re: baloo_file_extr crashing several times a second

XDG_RUNTIME_DIR=/run/user/1000
XDG_SESSION_CLASS=user
XDG_DATA_DIRS=/home/ljmcc/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share
XDG_SEAT=seat0
WAYLAND_DISPLAY=wayland-1
XDG_CURRENT_DESKTOP=KDE
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_DESKTOP=KDE
XDG_VTNR=2
DISPLAY=:0
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session1
XDG_CONFIG_DIRS=/home/ljmcc/.config/kdedefaults:/etc/xdg
XDG_SESSION_ID=2
XDG_MENU_PREFIX=plasma-
XDG_SESSION_TYPE=wayland

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#7 Yesterday 22:03:11

UrbenLegend
Member
Registered: 2021-03-26
Posts: 41

Re: baloo_file_extr crashing several times a second

It's this bug: https://bugs.kde.org/show_bug.cgi?id=524392

Current temporary workaround is to do a `systemctl --user restart kde-baloo.service` to stop the crashes. Seems to be due to the fact that the baloo process is missing DISPLAY and WAYLAND_DISPLAY.

There is a merge request to delay the start of kde-baloo until those env vars become available, but currently it is causing a systemd cycle ordering issue and preventing baloo from starting up: https://invent.kde.org/frameworks/baloo … quests/331

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#8 Today 08:52:05

genericity
Member
Registered: 2014-09-20
Posts: 34

Re: baloo_file_extr crashing several times a second

systemctl --user stop kde-baloo.service
systemctl --user edit kde-baloo.service

then enter:

[Unit]
After=plasma-kwin_wayland.service

save, close the editor, then restart.

Last edited by genericity (Today 08:57:53)

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