Bug 473905

Summary:	debian frozen after usage of kvm/qemu
Product:	[Plasma] plasmashell	Reporter:	krymed
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	aldgnu, camerino.marche, carl, danshin063, guillaumetel4g, kde, marc.delettrez, murkuhn, nate, tonyhooton
Priority:	NOR	Keywords:	drkonqi
Version:	5.27.7
Target Milestone:	1.0
Platform:	Debian testing
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi New crash information added by DrKonqi

Description krymed 2023-08-29 16:58:44 UTC

Application: plasmashell (5.27.7)

Qt Version: 5.15.10
Frameworks Version: 5.107.0
Operating System: Linux 6.4.0-3-amd64 x86_64
Windowing System: X11
Distribution: Debian GNU/Linux trixie/sid
DrKonqi: 5.27.7 [CoredumpBackend]

-- Information about the crash:
Debian testing freezes always after usage of kvm/qemu.

The crash can be reproduced every time.

-- Backtrace:
Application: Plazma (plasmashell), signal: Segmentation fault

           PID: 1479 (plasmashell)
           UID: 1000 (monika)
           GID: 1000 (monika)
        Signal: 11 (SEGV)
     Timestamp: Tue 2023-08-29 18:44:52 CEST (1min 42s ago)
  Command Line: /usr/bin/plasmashell --no-respawn
    Executable: /usr/bin/plasmashell
 Control Group: /user.slice/user-1000.slice/user@1000.service/session.slice/plasma-plasmashell.service
          Unit: user@1000.service
     User Unit: plasma-plasmashell.service
         Slice: user-1000.slice
     Owner UID: 1000 (monika)
       Boot ID: 97f0e68bc6aa4166b1aba0faed47c0bc
    Machine ID: 584e38ef48b04c82aeafb7c06925eee0
      Hostname: debian
       Storage: /var/lib/systemd/coredump/core.plasmashell.1000.97f0e68bc6aa4166b1aba0faed47c0bc.1479.1693327492000000.zst (present)
  Size on Disk: 13.5M
       Message: Process 1479 (plasmashell) of user 1000 dumped core.
                
                Module libsystemd.so.0 from deb systemd-254.1-2.amd64
                Module libudev.so.1 from deb systemd-254.1-2.amd64
                Stack trace of thread 1479:
                #0  0x00007fce0faa80fc n/a (libc.so.6 + 0x8a0fc)
                #1  0x00007fce0fa5a472 raise (libc.so.6 + 0x3c472)
                #2  0x00007fce12429b46 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x5b46)
                #3  0x00007fce0fa5a510 n/a (libc.so.6 + 0x3c510)
                #4  0x00007fce0faa80fc n/a (libc.so.6 + 0x8a0fc)
                #5  0x00007fce0fa5a472 raise (libc.so.6 + 0x3c472)
                #6  0x00007fce0fa5a510 n/a (libc.so.6 + 0x3c510)
                #7  0x00007fce102d4410 n/a (libQt5Core.so.5 + 0x2d4410)
                #8  0x00007fce102d65a6 n/a (libQt5Core.so.5 + 0x2d65a6)
                #9  0x00007fce102cc3d9 n/a (libQt5Core.so.5 + 0x2cc3d9)
                #10 0x00007fce102d2554 _ZNK11QMetaObject13indexOfMethodEPKc (libQt5Core.so.5 + 0x2d2554)
                #11 0x00007fce10d90c23 n/a (libQt5DBus.so.5 + 0x21c23)
                #12 0x00007fce10d91906 n/a (libQt5DBus.so.5 + 0x22906)
                #13 0x00007fce10d91df9 n/a (libQt5DBus.so.5 + 0x22df9)
                #14 0x00007fce10d929be n/a (libQt5DBus.so.5 + 0x239be)
                #15 0x00007fce10d88299 _ZN15QDBusConnection7connectERK7QStringS2_S2_S2_P7QObjectPKc (libQt5DBus.so.5 + 0x19299)
                #16 0x00007fce121c2946 n/a (libKF5ConfigCore.so.5 + 0x54946)
                #17 0x00007fce121c2f54 _ZN14KConfigWatcher6createERK28QExplicitlySharedDataPointerI13KSharedConfigE (libKF5ConfigCore.so.5 + 0x54f54)
                #18 0x00007fcddc32006f _ZN19NotificationManager8Settings7setLiveEb (libnotificationmanager.so.1 + 0x3a06f)
                #19 0x00007fcddc320339 _ZN19NotificationManager8SettingsC2EP7QObject (libnotificationmanager.so.1 + 0x3a339)
                #20 0x00007fcddc3f59ee n/a (libtaskmanagerplugin.so + 0x169ee)
                #21 0x00007fcddc3f708a n/a (libtaskmanagerplugin.so + 0x1808a)
                #22 0x00007fcddc3f341b n/a (libtaskmanagerplugin.so + 0x1441b)
                #23 0x00007fce118aa6f2 _ZNK8QQmlType6createEPP7QObjectPPvm (libQt5Qml.so.5 + 0x2aa6f2)
                #24 0x00007fce118fb37e _ZN17QQmlObjectCreator14createInstanceEiP7QObjectb (libQt5Qml.so.5 + 0x2fb37e)
                #25 0x00007fce118fbab7 _ZN17QQmlObjectCreator6createEiP7QObjectP26QQmlInstantiationInterrupti (libQt5Qml.so.5 + 0x2fbab7)
                #26 0x00007fce11888e09 _ZN20QQmlComponentPrivate11beginCreateEP15QQmlContextData (libQt5Qml.so.5 + 0x288e09)
                #27 0x00007fce11937020 n/a (libQt5Qml.so.5 + 0x337020)
                #28 0x00007fce117c1db6 n/a (libQt5Qml.so.5 + 0x1c1db6)
                #29 0x00007fce117c54df n/a (libQt5Qml.so.5 + 0x1c54df)
                #30 0x00007fce11757cee _ZN3QV48Function4callEPKNS_5ValueES3_iPKNS_16ExecutionContextE (libQt5Qml.so.5 + 0x157cee)
                #31 0x00007fce118e1b0d _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5 + 0x2e1b0d)
                #32 0x00007fce1189327f _ZN25QQmlBoundSignalExpression8evaluateEPPv (libQt5Qml.so.5 + 0x29327f)
                #33 0x00007fce118949c8 n/a (libQt5Qml.so.5 + 0x2949c8)
                #34 0x00007fce118c6e3f _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5 + 0x2c6e3f)
                #35 0x00007fce102fb188 n/a (libQt5Core.so.5 + 0x2fb188)
                #36 0x00007fce1186ef75 _ZN17QQmlVMEMetaObject8metaCallEP7QObjectN11QMetaObject4CallEiPPv (libQt5Qml.so.5 + 0x26ef75)
                #37 0x00007fce118eb56c n/a (libQt5Qml.so.5 + 0x2eb56c)
                #38 0x00007fce118ec00e n/a (libQt5Qml.so.5 + 0x2ec00e)
                #39 0x00007fce118e9a24 _ZN11QQmlBinding6updateE6QFlagsIN16QQmlPropertyData9WriteFlagEE (libQt5Qml.so.5 + 0x2e9a24)
                #40 0x00007fce118f6f42 _ZN17QQmlObjectCreator8finalizeER26QQmlInstantiationInterrupt (libQt5Qml.so.5 + 0x2f6f42)
                #41 0x00007fce1188d832 _ZN20QQmlIncubatorPrivate8incubateER26QQmlInstantiationInterrupt (libQt5Qml.so.5 + 0x28d832)
                #42 0x00007fce1188dccd _ZN17QQmlEnginePrivate8incubateER13QQmlIncubatorP15QQmlContextData (libQt5Qml.so.5 + 0x28dccd)
                #43 0x00007fce0ee3dc1f n/a (libQt5QmlModels.so.5 + 0x52c1f)
                #44 0x00007fce11f5b4cf n/a (libQt5Quick.so.5 + 0x35b4cf)
                #45 0x00007fce11f5d5de n/a (libQt5Quick.so.5 + 0x35d5de)
                #46 0x00007fce11f5e893 n/a (libQt5Quick.so.5 + 0x35e893)
                #47 0x00007fce11882801 _ZN19QQmlPropertyPrivate5writeEP7QObjectRK16QQmlPropertyDataRK8QVariantP15QQmlContextData6QFlagsINS2_9WriteFlagEE (libQt5Qml.so.5 + 0x282801)
                #48 0x00007fce117a69fa _ZN3QV414QObjectWrapper11setPropertyEPNS_15ExecutionEngineEP7QObjectP16QQmlPropertyDataRKNS_5ValueE (libQt5Qml.so.5 + 0x1a69fa)
                #49 0x00007fce117a713b _ZN3QV414QObjectWrapper14setQmlPropertyEPNS_15ExecutionEngineEP15QQmlContextDataP7QObjectPNS_6StringENS0_12RevisionModeERKNS_5ValueE (libQt5Qml.so.5 + 0x1a713b)
                #50 0x00007fce117a729b _ZN3QV414QObjectWrapper10virtualPutEPNS_7ManagedENS_11PropertyKeyERKNS_5ValueEPS4_ (libQt5Qml.so.5 + 0x1a729b)
                #51 0x00007fce1176cf82 _ZN3QV46Object26virtualResolveLookupSetterEPS0_PNS_15ExecutionEngineEPNS_6LookupERKNS_5ValueE (libQt5Qml.so.5 + 0x16cf82)
                #52 0x00007fce117c14a4 n/a (libQt5Qml.so.5 + 0x1c14a4)
                #53 0x00007fce117c54df n/a (libQt5Qml.so.5 + 0x1c54df)
                #54 0x00007fce11757cee _ZN3QV48Function4callEPKNS_5ValueES3_iPKNS_16ExecutionContextE (libQt5Qml.so.5 + 0x157cee)
                #55 0x00007fce118e1b0d _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5 + 0x2e1b0d)
                #56 0x00007fce1189327f _ZN25QQmlBoundSignalExpression8evaluateEPPv (libQt5Qml.so.5 + 0x29327f)
                #57 0x00007fce118949c8 n/a (libQt5Qml.so.5 + 0x2949c8)
                #58 0x00007fce118c6e3f _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5 + 0x2c6e3f)
                #59 0x00007fce102fb188 n/a (libQt5Core.so.5 + 0x2fb188)
                #60 0x00007fce118f73d0 _ZN17QQmlObjectCreator8finalizeER26QQmlInstantiationInterrupt (libQt5Qml.so.5 + 0x2f73d0)
                #61 0x00007fce1188d832 _ZN20QQmlIncubatorPrivate8incubateER26QQmlInstantiationInterrupt (libQt5Qml.so.5 + 0x28d832)
                #62 0x00007fce1188dccd _ZN17QQmlEnginePrivate8incubateER13QQmlIncubatorP15QQmlContextData (libQt5Qml.so.5 + 0x28dccd)
                #63 0x00007fce118874d4 _ZN13QQmlComponent6createER13QQmlIncubatorP11QQmlContextS3_ (libQt5Qml.so.5 + 0x2874d4)
                
                Stack trace of thread 1509:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5818 pthread_cond_wait (libc.so.6 + 0x87818)
                #2  0x00007fce021113b9 n/a (nouveau_dri.so + 0x1113b9)
                #3  0x00007fce020c507b n/a (nouveau_dri.so + 0xc507b)
                #4  0x00007fce021112f7 n/a (nouveau_dri.so + 0x1112f7)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1506:
                #0  0x00007fce0fb199ef __poll (libc.so.6 + 0xfb9ef)
                #1  0x00007fce12689d12 n/a (libxcb.so.1 + 0xcd12)
                #2  0x00007fce1268c07a xcb_wait_for_event (libxcb.so.1 + 0xf07a)
                #3  0x00007fce0b3b4840 n/a (libQt5XcbQpa.so.5 + 0x6d840)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1514:
                #0  0x00007fce0fb15a6c read (libc.so.6 + 0xf7a6c)
                #1  0x00007fce0ec1ad67 n/a (libglib-2.0.so.0 + 0xadd67)
                #2  0x00007fce0ebc5f8c n/a (libglib-2.0.so.0 + 0x58f8c)
                #3  0x00007fce0ebc651b n/a (libglib-2.0.so.0 + 0x5951b)
                #4  0x00007fce0ebc6bfc g_main_context_iteration (libglib-2.0.so.0 + 0x59bfc)
                #5  0x00007fce1031c8ee _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x31c8ee)
                #6  0x00007fce102c1b7b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2c1b7b)
                #7  0x00007fce100d8dde _ZN7QThread4execEv (libQt5Core.so.5 + 0xd8dde)
                #8  0x00007fce10d86757 n/a (libQt5DBus.so.5 + 0x17757)
                #9  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #10 0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #11 0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1556:
                #0  0x00007fce0fb199ef __poll (libc.so.6 + 0xfb9ef)
                #1  0x00007fce0ebc6567 n/a (libglib-2.0.so.0 + 0x59567)
                #2  0x00007fce0ebc6bfc g_main_context_iteration (libglib-2.0.so.0 + 0x59bfc)
                #3  0x00007fce1031c8d6 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x31c8d6)
                #4  0x00007fce102c1b7b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2c1b7b)
                #5  0x00007fce100d8dde _ZN7QThread4execEv (libQt5Core.so.5 + 0xd8dde)
                #6  0x00007fce11928d95 n/a (libQt5Qml.so.5 + 0x328d95)
                #7  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #8  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #9  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1635:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1626:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5818 pthread_cond_wait (libc.so.6 + 0x87818)
                #2  0x00007fce100dfbfb _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfbfb)
                #3  0x00007fce11e08835 n/a (libQt5Quick.so.5 + 0x208835)
                #4  0x00007fce11e0ac61 n/a (libQt5Quick.so.5 + 0x20ac61)
                #5  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #6  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #7  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1628:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1639:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1636:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1632:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1631:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1637:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1630:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1638:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1687:
                #0  0x00007fce0fb199ef __poll (libc.so.6 + 0xfb9ef)
                #1  0x00007fce12429150 n/a (libKF5Crash.so.5 + 0x5150)
                #2  0x00007fce12429ad6 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x5ad6)
                #3  0x00007fce0fa5a510 n/a (libc.so.6 + 0x3c510)
                #4  0x00007fcde6456b0e n/a (libKF5ActivitiesStats.so.1 + 0x27b0e)
                #5  0x00007fce0fcdc473 n/a (libstdc++.so.6 + 0xdc473)
                #6  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #7  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1623:
                #0  0x00007fce0fb199ef __poll (libc.so.6 + 0xfb9ef)
                #1  0x00007fce0ebc6567 n/a (libglib-2.0.so.0 + 0x59567)
                #2  0x00007fce0ebc6bfc g_main_context_iteration (libglib-2.0.so.0 + 0x59bfc)
                #3  0x00007fce1031c8d6 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x31c8d6)
                #4  0x00007fce102c1b7b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2c1b7b)
                #5  0x00007fce100d8dde _ZN7QThread4execEv (libQt5Core.so.5 + 0xd8dde)
                #6  0x00007fce11d56a16 n/a (libQt5Quick.so.5 + 0x156a16)
                #7  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #8  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #9  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1634:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1629:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1633:
                #0  0x00007fce0faa3156 n/a (libc.so.6 + 0x85156)
                #1  0x00007fce0faa5afc pthread_cond_timedwait (libc.so.6 + 0x87afc)
                #2  0x00007fce100dfb8c _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xdfb8c)
                #3  0x00007fce100dd2dc n/a (libQt5Core.so.5 + 0xdd2dc)
                #4  0x00007fce100d9ffd n/a (libQt5Core.so.5 + 0xd9ffd)
                #5  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #6  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1684:
                #0  0x00007fce0fb1c2d1 pselect (libc.so.6 + 0xfe2d1)
                #1  0x00007fce0dd43a8f n/a (libusbmuxd-2.0.so.6 + 0x2a8f)
                #2  0x00007fce0dd44d3b n/a (libusbmuxd-2.0.so.6 + 0x3d3b)
                #3  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #4  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                
                Stack trace of thread 1697:
                #0  0x00007fce0fb152ba statx (libc.so.6 + 0xf72ba)
                #1  0x00007fce1024f182 n/a (libQt5Core.so.5 + 0x24f182)
                #2  0x00007fce1024c81d _ZNK13QFSFileEngine9fileFlagsE6QFlagsIN19QAbstractFileEngine8FileFlagEE (libQt5Core.so.5 + 0x24c81d)
                #3  0x00007fce101e69ef _ZNK5QFile6existsEv (libQt5Core.so.5 + 0x1e69ef)
                #4  0x00007fcde6456be8 n/a (libKF5ActivitiesStats.so.1 + 0x27be8)
                #5  0x00007fce0fcdc473 n/a (libstdc++.so.6 + 0xdc473)
                #6  0x00007fce0faa63ec n/a (libc.so.6 + 0x883ec)
                #7  0x00007fce0fb26a1c n/a (libc.so.6 + 0x108a1c)
                ELF object binary architecture: AMD x86-64

[New LWP 1479]
[New LWP 1509]
[New LWP 1506]
[New LWP 1514]
[New LWP 1556]
[New LWP 1635]
[New LWP 1626]
[New LWP 1628]
[New LWP 1639]
[New LWP 1636]
[New LWP 1632]
[New LWP 1631]
[New LWP 1637]
[New LWP 1630]
[New LWP 1638]
[New LWP 1687]
[New LWP 1623]
[New LWP 1634]
[New LWP 1629]
[New LWP 1633]
[New LWP 1684]
[New LWP 1697]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/plasmashell --no-respawn'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007fce0faa80fc in ?? () from /lib/x86_64-linux-gnu/libc.so.6
[Current thread is 1 (Thread 0x7fce0d3fc9c0 (LWP 1479))]
[Current thread is 1 (Thread 0x7fce0d3fc9c0 (LWP 1479))]

Thread 22 (Thread 0x7fcda65fd6c0 (LWP 1697)):
#0  0x00007fce0fb152ba in statx () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce1024f182 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fce1024c81d in QFSFileEngine::fileFlags(QFlags<QAbstractFileEngine::FileFlag>) const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce101e69ef in QFile::exists() const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fcde6456be8 in ?? () from /lib/x86_64-linux-gnu/libKF5ActivitiesStats.so.1
#5  0x00007fce0fcdc473 in ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 21 (Thread 0x7fcdc17fa6c0 (LWP 1684)):
#0  0x00007fce0fb1c2d1 in pselect () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0dd43a8f in ?? () from /lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
#2  0x00007fce0dd44d3b in ?? () from /lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
#3  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 20 (Thread 0x7fcddd7fa6c0 (LWP 1633)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 19 (Thread 0x7fcddf7fe6c0 (LWP 1629)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 18 (Thread 0x7fcddcff96c0 (LWP 1634)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 17 (Thread 0x7fcde7f236c0 (LWP 1623)):
#0  0x00007fce0fb199ef in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0ebc6567 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce0ebc6bfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce1031c8d6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce102c1b7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce100d8dde in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fce11d56a16 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 16 (Thread 0x7fcdc0ff96c0 (LWP 1687)):
[KCrash Handler]
#4  0x00007fcde6456b0e in ?? () from /lib/x86_64-linux-gnu/libKF5ActivitiesStats.so.1
#5  0x00007fce0fcdc473 in ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 15 (Thread 0x7fcdc27fc6c0 (LWP 1638)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 14 (Thread 0x7fcddeffd6c0 (LWP 1630)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 13 (Thread 0x7fcdc2ffd6c0 (LWP 1637)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 12 (Thread 0x7fcdde7fc6c0 (LWP 1631)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 11 (Thread 0x7fcdddffb6c0 (LWP 1632)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 10 (Thread 0x7fcdc37fe6c0 (LWP 1636)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 9 (Thread 0x7fcdc1ffb6c0 (LWP 1639)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7fcddffff6c0 (LWP 1628)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7fcde5d346c0 (LWP 1626)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5818 in pthread_cond_wait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfbfb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce11e08835 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fce11e0ac61 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7fcdc3fff6c0 (LWP 1635)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5afc in pthread_cond_timedwait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce100dfb8c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fce100dd2dc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7fcdf91ff6c0 (LWP 1556)):
#0  0x00007fce0fb199ef in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0ebc6567 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce0ebc6bfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce1031c8d6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fce102c1b7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce100d8dde in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fce11928d95 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7fcdfa5fe6c0 (LWP 1514)):
#0  0x00007fce0fb15a6c in read () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0ec1ad67 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce0ebc5f8c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce0ebc651b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fce0ebc6bfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fce1031c8ee in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fce102c1b7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fce100d8dde in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fce10d86757 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7fce0abff6c0 (LWP 1506)):
#0  0x00007fce0fb199ef in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce12689d12 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fce1268c07a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fce0b3b4840 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fce100d9ffd in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7fcdfadff6c0 (LWP 1509)):
#0  0x00007fce0faa3156 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fce0faa5818 in pthread_cond_wait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fce021113b9 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#3  0x00007fce020c507b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007fce021112f7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007fce0faa63ec in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fce0fb26a1c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7fce0d3fc9c0 (LWP 1479)):
[KCrash Handler]
#4  0x00007fce0faa80fc in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x00007fce0fa5a472 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#6  <signal handler called>
#7  0x00007fce102d4410 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fce102d65a6 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fce102cc3d9 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fce102d2554 in QMetaObject::indexOfMethod(char const*) const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fce10d90c23 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#12 0x00007fce10d91906 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007fce10d91df9 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007fce10d929be in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#15 0x00007fce10d88299 in QDBusConnection::connect(QString const&, QString const&, QString const&, QString const&, QObject*, char const*) () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#16 0x00007fce121c2946 in ?? () from /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
#17 0x00007fce121c2f54 in KConfigWatcher::create(QExplicitlySharedDataPointer<KSharedConfig> const&) () from /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
#18 0x00007fcddc32006f in NotificationManager::Settings::setLive(bool) () from /lib/x86_64-linux-gnu/libnotificationmanager.so.1
#19 0x00007fcddc320339 in NotificationManager::Settings::Settings(QObject*) () from /lib/x86_64-linux-gnu/libnotificationmanager.so.1
#20 0x00007fcddc3f59ee in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#21 0x00007fcddc3f708a in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#22 0x00007fcddc3f341b in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#23 0x00007fce118aa6f2 in QQmlType::create(QObject**, void**, unsigned long) const () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007fce118fb37e in QQmlObjectCreator::createInstance(int, QObject*, bool) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007fce118fbab7 in QQmlObjectCreator::create(int, QObject*, QQmlInstantiationInterrupt*, int) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007fce11888e09 in QQmlComponentPrivate::beginCreate(QQmlContextData*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#27 0x00007fce11937020 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007fce117c1db6 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007fce117c54df in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007fce11757cee in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007fce118e1b0d in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007fce1189327f in QQmlBoundSignalExpression::evaluate(void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#33 0x00007fce118949c8 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#34 0x00007fce118c6e3f in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#35 0x00007fce102fb188 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007fce1186ef75 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#37 0x00007fce118eb56c in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#38 0x00007fce118ec00e in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#39 0x00007fce118e9a24 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#40 0x00007fce118f6f42 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#41 0x00007fce1188d832 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#42 0x00007fce1188dccd in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#43 0x00007fce0ee3dc1f in ?? () from /lib/x86_64-linux-gnu/libQt5QmlModels.so.5
#44 0x00007fce11f5b4cf in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#45 0x00007fce11f5d5de in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#46 0x00007fce11f5e893 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#47 0x00007fce11882801 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#48 0x00007fce117a69fa in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#49 0x00007fce117a713b in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#50 0x00007fce117a729b in QV4::QObjectWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#51 0x00007fce1176cf82 in QV4::Object::virtualResolveLookupSetter(QV4::Object*, QV4::ExecutionEngine*, QV4::Lookup*, QV4::Value const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#52 0x00007fce117c14a4 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#53 0x00007fce117c54df in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#54 0x00007fce11757cee in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#55 0x00007fce118e1b0d in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#56 0x00007fce1189327f in QQmlBoundSignalExpression::evaluate(void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#57 0x00007fce118949c8 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#58 0x00007fce118c6e3f in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#59 0x00007fce102fb188 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#60 0x00007fce118f73d0 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#61 0x00007fce1188d832 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#62 0x00007fce1188dccd in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#63 0x00007fce118874d4 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#64 0x00007fce12541a6b in KDeclarative::QmlObject::completeInitialization(QHash<QString, QVariant> const&) () from /lib/x86_64-linux-gnu/libKF5Declarative.so.5
#65 0x00007fce128ad260 in PlasmaQuick::AppletQuickItem::init() () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#66 0x00007fce03fdc29c in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#67 0x00007fce128aeaa1 in PlasmaQuick::AppletQuickItem::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#68 0x00007fce11e586dd in QQuickItemPrivate::refWindow(QQuickWindow*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#69 0x00007fce11e5869a in QQuickItemPrivate::refWindow(QQuickWindow*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#70 0x00007fce11e58ab4 in QQuickItem::setParentItem(QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#71 0x00007fce128bbd71 in ?? () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#72 0x000055b48bfd9656 in ?? ()
#73 0x00007fce102fba32 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#74 0x00007fce102ff85a in QTimer::timeout(QTimer::QPrivateSignal) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#75 0x00007fce102ef30b in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#76 0x00007fce10f62d2e in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#77 0x00007fce102c30d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#78 0x00007fce1031bcc9 in QTimerInfoList::activateTimers() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#79 0x00007fce1031c5ac in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#80 0x00007fce0ebc35b4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#81 0x00007fce0ebc6607 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#82 0x00007fce0ebc6bfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#83 0x00007fce1031c8d6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#84 0x00007fce102c1b7b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#85 0x00007fce102ca020 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#86 0x000055b48bfabda0 in ?? ()
#87 0x00007fce0fa456ca in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#88 0x00007fce0fa45785 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#89 0x000055b48bfabeb1 in ?? ()

Reported using DrKonqi

Comment 1 Nate Graham 2023-08-29 19:41:12 UTC

Thank you for the bug report! Unfortunately the backtrace is incomplete and missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

#16 0x00007fce121c2946 in ?? () from /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
#17 0x00007fce121c2f54 in KConfigWatcher::create(QExplicitlySharedDataPointer<KSharedConfig> const&) () from /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
#18 0x00007fcddc32006f in NotificationManager::Settings::setLive(bool) () from /lib/x86_64-linux-gnu/libnotificationmanager.so.1
#19 0x00007fcddc320339 in NotificationManager::Settings::Settings(QObject*) () from /lib/x86_64-linux-gnu/libnotificationmanager.so.1
#20 0x00007fcddc3f59ee in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#21 0x00007fcddc3f708a in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so
#22 0x00007fcddc3f341b in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/taskmanager/libtaskmanagerplugin.so

Could you please install debug symbols for kconfig and Plasma, reproduce the crash, and attach a new symbolicated backtrace? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports for details about how to do this.
Thanks again!

Comment 2 Carl Fink 2023-08-30 23:34:02 UTC

For information: crash happened while I was copying many (over 300,000) files from one USB drive to another. Also, the BOINC client was running with two projects active. In addition, Firefox Thunderbird, gedit, and Chromium were open.

Comment 3 Bug Janitor Service 2023-09-14 03:45:24 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Carl Fink 2023-09-14 21:59:54 UTC

I gave up on both KDE and KVM as being too buggy (KDE) or pointlessly opaque (KVM) to bother using, so I can't easily create a backtrace.

Comment 5 Nate Graham 2023-09-15 17:04:31 UTC

Ok, thanks for letting us know.

Comment 6 murkuhn 2023-09-16 16:16:43 UTC

Created attachment 161659 [details]
New crash information added by DrKonqi

plasmashell (5.27.8) using Qt 5.15.10

Happened as KDE desktop was loading after boot.

-- Backtrace (Reduced):
#8  0x00007efff6cdbfdb in QSemaphore::acquire(int) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
[...]
#14 0x00007efff7aae0e7 in QDBusServiceWatcher::QDBusServiceWatcher(QString const&, QDBusConnection const&, QFlags<QDBusServiceWatcher::WatchModeFlag>, QObject*) () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
[...]
#19 0x00007efff86aa6f2 in QQmlType::create(QObject**, void**, unsigned long) const () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007efff86fb37e in QQmlObjectCreator::createInstance(int, QObject*, bool) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007efff86fc85d in QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const*, QV4::CompiledData::Binding const*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5

Comment 7 camerino.marche 2023-09-29 09:26:19 UTC

Created attachment 161950 [details]
New crash information added by DrKonqi

plasmashell (5.27.5) using Qt 5.15.8

The crash has happened sometimes at the system startup.

-- Backtrace (Reduced):
#9  0x00007fbff38d1a2b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
[...]
#12 0x00007fbff46bcf3b in QDBusConnection::call(QDBusMessage const&, QDBus::CallMode, int) const () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007fbff46db01c in QDBusAbstractInterface::callWithArgumentList(QDBus::CallMode, QString const&, QList<QVariant> const&) () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007fbff46db78d in QDBusAbstractInterface::internalConstCall(QDBus::CallMode, QString const&, QList<QVariant> const&) const () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#15 0x00007fbff46c0f54 in QDBusConnectionInterface::isServiceRegistered(QString const&) const () from /lib/x86_64-linux-gnu/libQt5DBus.so.5

Comment 8 tonyhooton 2024-07-09 13:33:11 UTC

I am using Debian Stable, and not using virtual machine manager.  Since installing dual Dell 32" 6K screens on the PC, the system seems to lock up at any change in resolution or display mode when the system shuts down.  I have adjusted power management settings for monitors to stay on at all times.  Even if I turn the monitors off, the system will still lock up.  I go to halt the system for the evening, but the system locks up even on shutdown.  When I boot the system back up the next day, KDE asks me to report the bug.

Comment 9 Aldair Ferreira Duarte 2024-07-14 16:53:18 UTC

Created attachment 171661 [details]
New crash information added by DrKonqi

plasmashell (5.27.5) using Qt 5.15.8

Este erro se deu ao iniciar o sistema linux

inglês:
This error it refers to the specific issue that has arisen linux.

-- Backtrace (Reduced):
#8  0x00007ff3ef0cdddb in QSemaphore::acquire(int) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
[...]
#12 0x00007ff3ef2deaaa in QObjectPrivate::connectImpl(QObject const*, int, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007ff3ef2ded85 in QObject::connectImpl(QObject const*, void**, QObject const*, void**, QtPrivate::QSlotObjectBase*, Qt::ConnectionType, int const*, QMetaObject const*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007ff399ce0aac in KActivities::Stats::ResultWatcher::ResultWatcher(KActivities::Stats::Query, QObject*) () from /lib/x86_64-linux-gnu/libKF5ActivitiesStats.so.1
[...]
#20 0x00007ff3f09a53e0 in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const () from /lib/x86_64-linux-gnu/libQt5Qml.so.5

Comment 10 marc.delettrez 2024-11-25 18:40:09 UTC

Created attachment 176115 [details]
New crash information added by DrKonqi

plasmashell (5.27.5) using Qt 5.15.8

lors de l'ouverture de session, la fenetre d'erreur est apparue directement

-- Backtrace (Reduced):
#8  0x00007f0acb6cdddb in QSemaphore::acquire(int) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
[...]
#13 0x00007f0acc4bdb79 in QDBusConnection::connect(QString const&, QString const&, QString const&, QString const&, QObject*, char const*) () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007f0accd92946 in KConfigWatcher::KConfigWatcher(QExplicitlySharedDataPointer<KSharedConfig> const&) () from /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
#15 0x00007f0accd92f54 in KConfigWatcher::create(QExplicitlySharedDataPointer<KSharedConfig> const&) () from /lib/x86_64-linux-gnu/libKF5ConfigCore.so.5
[...]
#18 0x00007f0acd0aa022 in QQmlType::create(QObject**, void**, unsigned long) const () from /lib/x86_64-linux-gnu/libQt5Qml.so.5

Comment 11 danshin063 2025-01-14 11:57:38 UTC

Created attachment 177345 [details]
New crash information added by DrKonqi

plasmashell (5.27.5) using Qt 5.15.8

Before shutdown i did installation of printer via LPD protocol. Several times i got error when System preference tab or printer tab wont open after clicking by them. I installed printer-driver-foo2zjs, got printer in working state, after that i turn off vitualbox and did disable shutdown dalay before poweroff in session settings and perform shutdown of PC via panel. 

When i come back after switch on i got error. At background was already opened Firefox, nautilus file manager and that strange error.

-- Backtrace (Reduced):
#7  0x00007fe5452e4e9a in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe5452704fa in QConcatenateTablesProxyModel::addSourceModel(QAbstractItemModel*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
[...]
#10 0x00007fe537fc001d in TaskManager::TasksModel::TasksModel(QObject*) () from /lib/x86_64-linux-gnu/libtaskmanager.so.6abi1
[...]
#12 0x00007fe5468aa022 in QQmlType::create(QObject**, void**, unsigned long) const () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fe5468facae in QQmlObjectCreator::createInstance(int, QObject*, bool) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5