Application: plasmashell (5.22.5) Qt Version: 5.15.2 Frameworks Version: 5.86.0 Operating System: Linux 5.11.0-35-generic x86_64 Windowing System: X11 Drkonqi Version: 5.22.5 Distribution: Ubuntu 21.04 -- Information about the crash: - What I was doing when the application crashed: I unplugged a USB memory stick after dismounting it using the "safely remove" button. - Unusual behavior I noticed: Desktop background went black for a second or so and panel disappeared and reappeared. The reporter is unsure if this crash is reproducible. -- Backtrace: Application: Plasma (plasmashell), signal: Segmentation fault [KCrash Handler] #4 std::__atomic_base<QThreadData*>::load (__m=std::memory_order_relaxed, this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/c++/10/bits/atomic_base.h:741 #5 std::atomic<QThreadData*>::load (__m=std::memory_order_relaxed, this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/c++/10/atomic:523 #6 QAtomicOps<QThreadData*>::loadRelaxed<QThreadData*> (_q_value=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qatomic_cxx11.h:239 #7 QBasicAtomicPointer<QThreadData>::loadRelaxed (this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qbasicatomic.h:248 #8 QQmlNotifierEndpoint::connect (this=this@entry=0x55dd946d0140, source=0x55dd90684340, sourceSignal=46, engine=0x0, doNotify=doNotify@entry=true) at qml/qqmlnotifier.cpp:122 #9 0x00007ff47defe274 in QQmlVMEMetaObjectEndpoint::tryConnect (this=0x55dd946d0140) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:266 #10 0x00007ff47defe51d in QQmlVMEMetaObject::connectAlias (this=<optimized out>, aliasId=<optimized out>) at qml/qqmlvmemetaobject.cpp:1294 #11 0x00007ff47deffa3d in QQmlVMEMetaObject::metaCall (this=0x55dd904fb860, o=<optimized out>, c=QMetaObject::ReadProperty, _id=<optimized out>, a=0x7ffcfe187390) at qml/qqmlvmemetaobject.cpp:906 #12 0x00007ff47de36c0c in QQmlPropertyData::readPropertyWithArgs (this=<optimized out>, this=<optimized out>, args=0x7ffcfe187390, target=0x55dd93936920) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:367 #13 QQmlPropertyData::readPropertyWithArgs (args=0x7ffcfe187390, target=0x55dd93936920, this=0x7ff464b300f8) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:360 #14 QQmlPropertyData::readProperty (property=0x7ffcfe187370, target=0x55dd93936920, this=0x7ff464b300f8) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:357 #15 loadProperty (v4=0x55dd8ea5b1b0, object=0x55dd93936920, property=...) at jsruntime/qv4qobjectwrapper.cpp:152 #16 0x00007ff44a9c9773 in ?? () #17 0x0000000000000000 in ?? () [Inferior 1 (process 2049) detached] The reporter indicates this bug may be a duplicate of or related to bug 427945. Possible duplicates by query: bug 441365, bug 439498, bug 430431, bug 427945, bug 422533. Reported using DrKonqi
Created attachment 141797 [details] New crash information added by DrKonqi plasmashell (5.22.5) using Qt 5.15.2 - What I was doing when the application crashed: I unplugged pendrive from computer using external drives applet. -- Backtrace (Reduced): #6 std::__atomic_base<QThreadData*>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/c++/10/bits/atomic_base.h:741 #7 std::atomic<QThreadData*>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/c++/10/atomic:523 #8 QAtomicOps<QThreadData*>::loadRelaxed<QThreadData*>(std::atomic<QThreadData*> const&) (_q_value=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qatomic_cxx11.h:239 #9 QBasicAtomicPointer<QThreadData>::loadRelaxed() const (this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qbasicatomic.h:248 #10 QQmlNotifierEndpoint::connect(QObject*, int, QQmlEngine*, bool) (this=this@entry=0x56544ba586e0, source=0x56544d0618e0, sourceSignal=46, engine=0x0, doNotify=doNotify@entry=true) at qml/qqmlnotifier.cpp:122
It seems like it happens only when the USB stick is removed immediately upon the "The device can now be safely removed" message, and not when there is a larger pause between these events.
Created attachment 142529 [details] New crash information added by DrKonqi plasmashell (5.23.0) using Qt 5.15.3 - What I was doing when the application crashed: I unmounted my external hard drive via the menu bar and then unplugged it, causing Plasma to crash. -- Backtrace (Reduced): #4 std::__atomic_base<QThreadData*>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/c++/9/bits/atomic_base.h:734 #5 std::atomic<QThreadData*>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/c++/9/atomic:519 #6 QAtomicOps<QThreadData*>::loadRelaxed<QThreadData*>(std::atomic<QThreadData*> const&) (_q_value=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qatomic_cxx11.h:239 #7 QBasicAtomicPointer<QThreadData>::loadRelaxed() const (this=<error reading variable: Cannot access memory at address 0x8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qbasicatomic.h:248 #8 QQmlNotifierEndpoint::connect(QObject*, int, QQmlEngine*, bool) (this=this@entry=0x557a15850410, source=0x7f4b643c5a70, sourceSignal=46, engine=0x0, doNotify=doNotify@entry=true) at qml/qqmlnotifier.cpp:122
*** Bug 444352 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 427945 ***