Bug 478149

Summary: Kamoso crashes when camera is disabled in UEFI/BIOS settings
Product: [Applications] kamoso Reporter: Bill <user1138>
Component: generalAssignee: Aleix Pol <aleixpol>
Status: REPORTED ---    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: 22.12.3   
Target Milestone: ---   
Platform: Debian stable   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Bill 2023-12-06 08:16:43 UTC 
Application: kamoso (22.12.3)

Qt Version: 5.15.8
Frameworks Version: 5.103.0
Operating System: Linux 6.1.0-13-amd64 x86_64
Windowing System: X11
Distribution: Debian GNU/Linux 12 (bookworm)
DrKonqi: 5.27.5 [CoredumpBackend]

-- Information about the crash:
Dell Latitude E6420 Laptop - Cameara is disabled via the UEFI settings, microphone is enabled.
Kamoso opens and allow the user to start recording (presumably audio only, as no video is shown), but once recording is stopped, Kamoso crashes.
I suspect this crash would also happen in reverse (camera enabled, microphone disabled) and if both are disabled (though I did not test).
Obviously, it could handle these scenarios more gracefully. I believe this issue is related to/the same as Bug 462424.

Hope that helps!

The crash can be reproduced every time.

-- Backtrace:
Application: Kamoso (kamoso), signal: Segmentation fault

           PID: 1857 (kamoso)
           UID: 1000 (debian)
           GID: 1000 (debian)
        Signal: 11 (SEGV)
     Timestamp: Wed 2023-12-06 17:59:27 AEST (1min 7s ago)
  Command Line: /usr/bin/kamoso -qwindowtitle Kamoso
    Executable: /usr/bin/kamoso
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-org.kde.kamoso-a1ea12c28f0d47728e029021ded1bb9c.scope
          Unit: user@1000.service
     User Unit: app-org.kde.kamoso-a1ea12c28f0d47728e029021ded1bb9c.scope
         Slice: user-1000.slice
     Owner UID: 1000 (debian)
       Boot ID: 62f9d16ffd75474b8092b5a26dd3b203
    Machine ID: 5d40b852866c48039fbbc9212516fcfe
      Hostname: E6420
       Storage: /var/lib/systemd/coredump/core.kamoso.1000.62f9d16ffd75474b8092b5a26dd3b203.1857.1701849567000000.zst (present)
  Size on Disk: 6.3M
       Message: Process 1857 (kamoso) of user 1000 dumped core.
                
                Module libsystemd.so.0 from deb systemd-252.17-1~deb12u1.amd64
                Module libudev.so.1 from deb systemd-252.17-1~deb12u1.amd64
                Stack trace of thread 1857:
                #0  0x00007f0a204a9d3c n/a (libc.so.6 + 0x8ad3c)
                #1  0x00007f0a2045af32 raise (libc.so.6 + 0x3bf32)
                #2  0x00007f0a2115db46 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x5b46)
                #3  0x00007f0a2045afd0 n/a (libc.so.6 + 0x3bfd0)
                #4  0x000055ef61d26450 n/a (kamoso + 0x14450)
                #5  0x000055ef61d2e549 n/a (kamoso + 0x1c549)
                #6  0x000055ef61d29292 n/a (kamoso + 0x17292)
                #7  0x000055ef61d244e3 n/a (kamoso + 0x124e3)
                #8  0x00007f0a226822c1 _ZN19QQmlPropertyPrivate5writeEP7QObjectRK16QQmlPropertyDataRK8QVariantP15QQmlContextData6QFlagsINS2_9WriteFlagEE (libQt5Qml.so.5 + 0x2822c1)
                #9  0x00007f0a225a68ba _ZN3QV414QObjectWrapper11setPropertyEPNS_15ExecutionEngineEP7QObjectP16QQmlPropertyDataRKNS_5ValueE (libQt5Qml.so.5 + 0x1a68ba)
                #10 0x00007f0a225a6ffb _ZN3QV414QObjectWrapper14setQmlPropertyEPNS_15ExecutionEngineEP15QQmlContextDataP7QObjectPNS_6StringENS0_12RevisionModeERKNS_5ValueE (libQt5Qml.so.5 + 0x1a6ffb)
                #11 0x00007f0a225a715b _ZN3QV414QObjectWrapper10virtualPutEPNS_7ManagedENS_11PropertyKeyERKNS_5ValueEPS4_ (libQt5Qml.so.5 + 0x1a715b)
                #12 0x00007f0a2252f333 _ZN3QV46Lookup14setterFallbackEPS0_PNS_15ExecutionEngineERNS_5ValueERKS4_ (libQt5Qml.so.5 + 0x12f333)
                #13 0x00007f0a225c13a4 n/a (libQt5Qml.so.5 + 0x1c13a4)
                #14 0x00007f0a225c53df n/a (libQt5Qml.so.5 + 0x1c53df)
                #15 0x00007f0a22557c2e _ZN3QV48Function4callEPKNS_5ValueES3_iPKNS_16ExecutionContextE (libQt5Qml.so.5 + 0x157c2e)
                #16 0x00007f0a226e144d _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5 + 0x2e144d)
                #17 0x00007f0a22692baf _ZN25QQmlBoundSignalExpression8evaluateEPPv (libQt5Qml.so.5 + 0x292baf)
                #18 0x00007f0a226942f8 n/a (libQt5Qml.so.5 + 0x2942f8)
                #19 0x00007f0a226c677f _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5 + 0x2c677f)
                #20 0x00007f0a20ee8a8d n/a (libQt5Core.so.5 + 0x2e8a8d)
                #21 0x00007f0a1acf5422 _ZN12QQuickAction14checkedChangedEb (libQt5QuickTemplates2.so.5 + 0x8b422)
                #22 0x00007f0a1acf35ea _ZN20QQuickAbstractButton10setCheckedEb (libQt5QuickTemplates2.so.5 + 0x895ea)
                #23 0x00007f0a1acf36ff _ZN27QQuickAbstractButtonPrivate6toggleEb (libQt5QuickTemplates2.so.5 + 0x896ff)
                #24 0x00007f0a1acf4246 _ZN27QQuickAbstractButtonPrivate13handleReleaseERK7QPointF (libQt5QuickTemplates2.so.5 + 0x8a246)
                #25 0x00007f0a1ad13251 _ZN13QQuickControl17mouseReleaseEventEP11QMouseEvent (libQt5QuickTemplates2.so.5 + 0xa9251)
                #26 0x00007f0a22c550e8 _ZN10QQuickItem5eventEP6QEvent (libQt5Quick.so.5 + 0x2550e8)
                #27 0x00007f0a21b62fae _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x162fae)
                #28 0x00007f0a20eb16f8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2b16f8)
                #29 0x00007f0a22c729da _ZN19QQuickWindowPrivate17deliverMouseEventEP23QQuickPointerMouseEvent (libQt5Quick.so.5 + 0x2729da)
                #30 0x00007f0a22c740dd _ZN19QQuickWindowPrivate19deliverPointerEventEP18QQuickPointerEvent (libQt5Quick.so.5 + 0x2740dd)
                #31 0x00007f0a213493f5 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5 + 0x1493f5)
                #32 0x00007f0a21b62fae _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x162fae)
                #33 0x00007f0a20eb16f8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2b16f8)
                #34 0x00007f0a2133d3ed _ZN22QGuiApplicationPrivate17processMouseEventEPN29QWindowSystemInterfacePrivate10MouseEventE (libQt5Gui.so.5 + 0x13d3ed)
                #35 0x00007f0a21311cac _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5 + 0x111cac)
                #36 0x00007f0a1b8fbeca n/a (libQt5XcbQpa.so.5 + 0x6deca)
                #37 0x00007f0a209cc7a9 g_main_context_dispatch (libglib-2.0.so.0 + 0x547a9)
                #38 0x00007f0a209cca38 n/a (libglib-2.0.so.0 + 0x54a38)
                #39 0x00007f0a209ccacc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #40 0x00007f0a20f09836 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x309836)
                #41 0x00007f0a20eb017b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b017b)
                #42 0x00007f0a20eb82d6 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x2b82d6)
                #43 0x000055ef61d22afb n/a (kamoso + 0x10afb)
                #44 0x00007f0a204461ca n/a (libc.so.6 + 0x271ca)
                #45 0x00007f0a20446285 __libc_start_main (libc.so.6 + 0x27285)
                #46 0x000055ef61d22ca1 n/a (kamoso + 0x10ca1)
                
                Stack trace of thread 1866:
                #0  0x00007f0a2051b05f __poll (libc.so.6 + 0xfc05f)
                #1  0x00007f0a209cc9ae n/a (libglib-2.0.so.0 + 0x549ae)
                #2  0x00007f0a209ccacc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #3  0x00007f0a20f0984e _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30984e)
                #4  0x00007f0a20eb017b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b017b)
                #5  0x00007f0a20ccab87 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcab87)
                #6  0x00007f0a22728555 n/a (libQt5Qml.so.5 + 0x328555)
                #7  0x00007f0a20ccbd43 n/a (libQt5Core.so.5 + 0xcbd43)
                #8  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #9  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1867:
                #0  0x00007f0a20a212b4 g_mutex_unlock (libglib-2.0.so.0 + 0xa92b4)
                #1  0x00007f0a209cc3cf g_main_context_check (libglib-2.0.so.0 + 0x543cf)
                #2  0x00007f0a209cc958 n/a (libglib-2.0.so.0 + 0x54958)
                #3  0x00007f0a209ccacc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #4  0x00007f0a20f0984e _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30984e)
                #5  0x00007f0a20eb017b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b017b)
                #6  0x00007f0a20ccab87 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcab87)
                #7  0x00007f0a22728555 n/a (libQt5Qml.so.5 + 0x328555)
                #8  0x00007f0a20ccbd43 n/a (libQt5Core.so.5 + 0xcbd43)
                #9  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #10 0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1875:
                #0  0x00007f0a204a4da6 n/a (libc.so.6 + 0x85da6)
                #1  0x00007f0a204a7468 pthread_cond_wait (libc.so.6 + 0x88468)
                #2  0x00007f0a20cd1a2b _ZN14QWaitCondition4waitEP6QMutex14QDeadlineTimer (libQt5Core.so.5 + 0xd1a2b)
                #3  0x00007f0a22c08085 n/a (libQt5Quick.so.5 + 0x208085)
                #4  0x00007f0a22c0a4b1 n/a (libQt5Quick.so.5 + 0x20a4b1)
                #5  0x00007f0a20ccbd43 n/a (libQt5Core.so.5 + 0xcbd43)
                #6  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #7  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1862:
                #0  0x00007f0a2051b05f __poll (libc.so.6 + 0xfc05f)
                #1  0x00007f0a209cc9ae n/a (libglib-2.0.so.0 + 0x549ae)
                #2  0x00007f0a209ccacc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #3  0x00007f0a20f0984e _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30984e)
                #4  0x00007f0a20eb017b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b017b)
                #5  0x00007f0a20ccab87 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcab87)
                #6  0x00007f0a1ff72487 n/a (libQt5DBus.so.5 + 0x17487)
                #7  0x00007f0a20ccbd43 n/a (libQt5Core.so.5 + 0xcbd43)
                #8  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #9  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1859:
                #0  0x00007f0a2051b05f __poll (libc.so.6 + 0xfc05f)
                #1  0x00007f0a1ee0bd12 n/a (libxcb.so.1 + 0xcd12)
                #2  0x00007f0a1ee0e07a xcb_wait_for_event (libxcb.so.1 + 0xf07a)
                #3  0x00007f0a1b8faf00 n/a (libQt5XcbQpa.so.5 + 0x6cf00)
                #4  0x00007f0a20ccbd43 n/a (libQt5Core.so.5 + 0xcbd43)
                #5  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1874:
                #0  0x00007f0a204a4da6 n/a (libc.so.6 + 0x85da6)
                #1  0x00007f0a204a7468 pthread_cond_wait (libc.so.6 + 0x88468)
                #2  0x00007f0a1890c059 n/a (crocus_dri.so + 0x10c059)
                #3  0x00007f0a188be17b n/a (crocus_dri.so + 0xbe17b)
                #4  0x00007f0a1890bf97 n/a (crocus_dri.so + 0x10bf97)
                #5  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1868:
                #0  0x00007f0a205170dc read (libc.so.6 + 0xf80dc)
                #1  0x00007f0a20a1bc9f n/a (libglib-2.0.so.0 + 0xa3c9f)
                #2  0x00007f0a209cc4c5 g_main_context_check (libglib-2.0.so.0 + 0x544c5)
                #3  0x00007f0a209cc958 n/a (libglib-2.0.so.0 + 0x54958)
                #4  0x00007f0a209cccef g_main_loop_run (libglib-2.0.so.0 + 0x54cef)
                #5  0x00007f0a13e9d09e n/a (libgstvideo4linux2.so + 0x1009e)
                #6  0x00007f0a209f6cfd n/a (libglib-2.0.so.0 + 0x7ecfd)
                #7  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #8  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1864:
                #0  0x00007f0a2051b05f __poll (libc.so.6 + 0xfc05f)
                #1  0x00007f0a209cc9ae n/a (libglib-2.0.so.0 + 0x549ae)
                #2  0x00007f0a209ccacc g_main_context_iteration (libglib-2.0.so.0 + 0x54acc)
                #3  0x00007f0a20f0984e _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x30984e)
                #4  0x00007f0a20eb017b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2b017b)
                #5  0x00007f0a20ccab87 _ZN7QThread4execEv (libQt5Core.so.5 + 0xcab87)
                #6  0x00007f0a22728555 n/a (libQt5Qml.so.5 + 0x328555)
                #7  0x00007f0a20ccbd43 n/a (libQt5Core.so.5 + 0xcbd43)
                #8  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #9  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                
                Stack trace of thread 1860:
                #0  0x00007f0a204a4da6 n/a (libc.so.6 + 0x85da6)
                #1  0x00007f0a204a7468 pthread_cond_wait (libc.so.6 + 0x88468)
                #2  0x00007f0a1890c059 n/a (crocus_dri.so + 0x10c059)
                #3  0x00007f0a188be17b n/a (crocus_dri.so + 0xbe17b)
                #4  0x00007f0a1890bf97 n/a (crocus_dri.so + 0x10bf97)
                #5  0x00007f0a204a8044 n/a (libc.so.6 + 0x89044)
                #6  0x00007f0a2052861c n/a (libc.so.6 + 0x10961c)
                ELF object binary architecture: AMD x86-64

[New LWP 1857]
[New LWP 1866]
[New LWP 1867]
[New LWP 1875]
[New LWP 1862]
[New LWP 1859]
[New LWP 1874]
[New LWP 1868]
[New LWP 1864]
[New LWP 1860]
[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/kamoso -qwindowtitle Kamoso'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f0a204a9d3c in ?? () from /lib/x86_64-linux-gnu/libc.so.6
[Current thread is 1 (Thread 0x7f0a1be639c0 (LWP 1857))]
[Current thread is 1 (Thread 0x7f0a1be639c0 (LWP 1857))]

Thread 10 (Thread 0x7f0a0b5ff6c0 (LWP 1860)):
#0  0x00007f0a204a4da6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a204a7468 in pthread_cond_wait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f0a1890c059 in ?? () from /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so
#3  0x00007f0a188be17b in ?? () from /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so
#4  0x00007f0a1890bf97 in ?? () from /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so
#5  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 9 (Thread 0x7f0a099ff6c0 (LWP 1864)):
#0  0x00007f0a2051b05f in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a209cc9ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a209ccacc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a20f0984e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0a20eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0a20ccab87 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0a22728555 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f0a20ccbd43 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7f09fa7be6c0 (LWP 1868)):
#0  0x00007f0a205170dc in read () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a20a1bc9f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a209cc4c5 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a209cc958 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0a209cccef in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0a13e9d09e in ?? () from /lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideo4linux2.so
#6  0x00007f0a209f6cfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7f09db7fe6c0 (LWP 1874)):
#0  0x00007f0a204a4da6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a204a7468 in pthread_cond_wait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f0a1890c059 in ?? () from /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so
#3  0x00007f0a188be17b in ?? () from /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so
#4  0x00007f0a1890bf97 in ?? () from /usr/lib/x86_64-linux-gnu/dri/crocus_dri.so
#5  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7f0a1b5ff6c0 (LWP 1859)):
#0  0x00007f0a2051b05f in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a1ee0bd12 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f0a1ee0e07a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f0a1b8faf00 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f0a20ccbd43 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7f0a0adfe6c0 (LWP 1862)):
#0  0x00007f0a2051b05f in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a209cc9ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a209ccacc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a20f0984e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0a20eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0a20ccab87 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0a1ff72487 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f0a20ccbd43 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7f09daffd6c0 (LWP 1875)):
#0  0x00007f0a204a4da6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a204a7468 in pthread_cond_wait () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f0a20cd1a2b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f0a22c08085 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f0a22c0a4b1 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f0a20ccbd43 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f09fb9ff6c0 (LWP 1867)):
#0  0x00007f0a20a212b4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0a209cc3cf in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a209cc958 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a209ccacc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0a20f0984e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0a20eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0a20ccab87 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0a22728555 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f0a20ccbd43 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#10 0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f0a08dfe6c0 (LWP 1866)):
#0  0x00007f0a2051b05f in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f0a209cc9ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a209ccacc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a20f0984e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f0a20eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0a20ccab87 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0a22728555 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f0a20ccbd43 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0a204a8044 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007f0a2052861c in ?? () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f0a1be639c0 (LWP 1857)):
[KCrash Handler]
#4  0x000055ef61d26450 in ?? ()
#5  0x000055ef61d2e549 in ?? ()
#6  0x000055ef61d29292 in ?? ()
#7  0x000055ef61d244e3 in ?? ()
#8  0x00007f0a226822c1 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f0a225a68ba in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f0a225a6ffb 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
#11 0x00007f0a225a715b in QV4::QObjectWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f0a2252f333 in QV4::Lookup::setterFallback(QV4::Lookup*, QV4::ExecutionEngine*, QV4::Value&, QV4::Value const&) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f0a225c13a4 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f0a225c53df in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f0a22557c2e in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f0a226e144d in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f0a22692baf in QQmlBoundSignalExpression::evaluate(void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f0a226942f8 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f0a226c677f in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f0a20ee8a8d in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f0a1acf5422 in QQuickAction::checkedChanged(bool) () from /lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#22 0x00007f0a1acf35ea in QQuickAbstractButton::setChecked(bool) () from /lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#23 0x00007f0a1acf36ff in QQuickAbstractButtonPrivate::toggle(bool) () from /lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#24 0x00007f0a1acf4246 in QQuickAbstractButtonPrivate::handleRelease(QPointF const&) () from /lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#25 0x00007f0a1ad13251 in QQuickControl::mouseReleaseEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#26 0x00007f0a22c550e8 in QQuickItem::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f0a21b62fae in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f0a20eb16f8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f0a22c729da in QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#30 0x00007f0a22c740dd in QQuickWindowPrivate::deliverPointerEvent(QQuickPointerEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#31 0x00007f0a213493f5 in QWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#32 0x00007f0a21b62fae in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f0a20eb16f8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f0a2133d3ed in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#35 0x00007f0a21311cac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#36 0x00007f0a1b8fbeca in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#37 0x00007f0a209cc7a9 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f0a209cca38 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f0a209ccacc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f0a20f09836 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f0a20eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f0a20eb82d6 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x000055ef61d22afb in ?? ()
#44 0x00007f0a204461ca in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#45 0x00007f0a20446285 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#46 0x000055ef61d22ca1 in ?? ()

The reporter indicates this bug may be a duplicate of or related to bug 462424.

Reported using DrKonqi