Bug 414323 - Plasma crashed while copying flash drive content, after killing the Java process
Summary: Plasma crashed while copying flash drive content, after killing the Java process
Status: RESOLVED WORKSFORME
Alias: None
Product: plasmashell
Classification: Plasma
Component: general (show other bugs)
Version: 5.12.9
Platform: Ubuntu Linux
: NOR crash
Target Milestone: 1.0
Assignee: David Edmundson
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2019-11-20 11:23 UTC by labushul
Modified: 2021-01-05 04:34 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:

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Description labushul 2019-11-20 11:23:34 UTC 
Application: plasmashell (5.12.9)

Qt Version: 5.9.5
Frameworks Version: 5.47.0
Operating System: Linux 4.15.0-70-generic x86_64
Distribution: Ubuntu 18.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:
moved the mouse bluetooth dongle in a different usb port, plugged a 3.0 flash drive in that usb port (SS port) and started copying it's contents (~12gb) onto the internal HDD. The cursor started freezing intermittently, phpstorm UI started going crazy. Tried changing the phpstorm theme to force the UI to refresh. Of course it didn't work. So I went into the resource manager and killer the java process. Hell broke loose. Everything froze, after a few seconds Plasma died and restarted itself.

- Unusual behavior I noticed:
mouse cursor not moving consistently

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdb9774d800 (LWP 3759))]

Thread 19 (Thread 0x7fda737ff700 (LWP 1313)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55575a9fdce4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55575a9fdc90, cond=0x55575a9fdcb8) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x55575a9fdcb8, mutex=0x55575a9fdc90) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda737ff700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fda81ced700 (LWP 1255)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55575b8abc30) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55575b8abbe0, cond=0x55575b8abc08) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x55575b8abc08, mutex=0x55575b8abbe0) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda81ced700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fda835fe700 (LWP 10070)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5557546dc6b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5557546dc660, cond=0x5557546dc688) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x5557546dc688, mutex=0x5557546dc660) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda835fe700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fda83fff700 (LWP 8184)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55575a1c99d4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55575a1c9980, cond=0x55575a1c99a8) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x55575a1c99a8, mutex=0x55575a1c9980) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda83fff700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fda915ed700 (LWP 7185)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555755332440) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5557553323f0, cond=0x555755332418) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x555755332418, mutex=0x5557553323f0) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda915ed700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fda925ee700 (LWP 7141)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fdb7c00efa0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fdb7c00ef50, cond=0x7fdb7c00ef78) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x7fdb7c00ef78, mutex=0x7fdb7c00ef50) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda925ee700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fda93bff700 (LWP 7004)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fdb74102784) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fdb74102730, cond=0x7fdb74102758) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x7fdb74102758, mutex=0x7fdb74102730) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fda93bff700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fdaad300700 (LWP 5799)):
#0  0x00007fdb90d155d7 in ioctl () at ../sysdeps/unix/syscall-template.S:78
#1  0x00007fdae6daa15c in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.415.27
#2  0x00007fdae6dab4e7 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.415.27
#3  0x00007fdae6dabd43 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.415.27
#4  0x00007fdb704eb5a2 in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#5  0x00007fdae6a61a54 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.415.27
#6  0x00007fdae697904e in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.415.27
#7  0x00007fdb704e18d4 in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#8  0x00007fdb7bbf2902 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#9  0x00007fdb91e8906a in QOpenGLContext::swapBuffers(QSurface*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007fdb951a6c03 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fdb951abac8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fdb905a66db in start_thread (arg=0x7fdaad300700) at pthread_create.c:463
#14 0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fdaadf01700 (LWP 5798)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555754284a24) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5557542849d0, cond=0x5557542849f8) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x5557542849f8, mutex=0x5557542849d0) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fdaadf01700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fdab527c700 (LWP 5789)):
#0  0x00007fdb90d0f0b4 in __GI___libc_read (fd=51, buf=0x7fdab527bb50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb8b8c02d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb8b87b0b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb8b87b570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdb8b87b6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdb9165c99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdb916019fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb9142023a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdab7bd8747 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdb905a66db in start_thread (arg=0x7fdab527c700) at pthread_create.c:463
#11 0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fdad63fe700 (LWP 4006)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555752ae60d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x555752ae6080, cond=0x555752ae60a8) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x555752ae60a8, mutex=0x555752ae6080) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fdad63fe700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fdad7fff700 (LWP 3926)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55575281efc0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55575281ef70, cond=0x55575281ef98) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x55575281ef98, mutex=0x55575281ef70) at pthread_cond_wait.c:655
#3  0x00007fdb914265ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb951ab6a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fdb951abb0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb905a66db in start_thread (arg=0x7fdad7fff700) at pthread_create.c:463
#8  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fdadcec9700 (LWP 3888)):
#0  0x00007fdb90d0f0b4 in __GI___libc_read (fd=31, buf=0x7fdadcec8b20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb8b8c02d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb8b87b0b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb8b87b570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdb8b87b6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdb9165c99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdb916019fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb9142023a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdb9512c2a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdb905a66db in start_thread (arg=0x7fdadcec9700) at pthread_create.c:463
#11 0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fdb67fff700 (LWP 3841)):
#0  0x00007fdb905ac9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fdb9710efb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fdb905ac9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fdb9710ef68, cond=0x7fdb9710ef90) at pthread_cond_wait.c:502
#2  0x00007fdb905ac9f3 in __pthread_cond_wait (cond=0x7fdb9710ef90, mutex=0x7fdb9710ef68) at pthread_cond_wait.c:655
#3  0x00007fdb96e185f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fdb96e18639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fdb905a66db in start_thread (arg=0x7fdb67fff700) at pthread_create.c:463
#6  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fdb72998700 (LWP 3831)):
#0  0x00007fdb90d2fe80 in __GI___clock_gettime (clock_id=1, tp=0x7fdb72997af0) at ../sysdeps/unix/clock_gettime.c:93
#1  0x00007fdb9165c2b1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fdb9165aae9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fdb9165b0c5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb9165c70e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdb8b87ab28 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fdb8b87b4fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fdb8b87b6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fdb9165c99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fdb916019fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdb9142023a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fdb945926f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fdb905a66db in start_thread (arg=0x7fdb72998700) at pthread_create.c:463
#14 0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fdb78a25700 (LWP 3826)):
#0  0x00007fdb90d13bf9 in __GI___poll (fds=0x7fdb6c004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb8b87b5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb8b87b6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb9165c99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fdb916019fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdb9142023a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdb945926f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdb905a66db in start_thread (arg=0x7fdb78a25700) at pthread_create.c:463
#9  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fdb7a46a700 (LWP 3806)):
#0  0x00007fdb90d0f0b4 in __GI___libc_read (fd=7, buf=0x7fdb7a469b60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fdb8b8c02d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb8b87b0b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb8b87b570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdb8b87b6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdb9165c99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fdb916019fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fdb9142023a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdb91ad9d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdb905a66db in start_thread (arg=0x7fdb7a46a700) at pthread_create.c:463
#11 0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fdb80db2700 (LWP 3770)):
#0  0x00007fdb90d13bf9 in __GI___poll (fds=0x7fdb80db1ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdb95d39747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fdb95d3b36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fdb8374b5e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fdb9142517d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdb905a66db in start_thread (arg=0x7fdb80db2700) at pthread_create.c:463
#6  0x00007fdb90d2088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fdb9774d800 (LWP 3759)):
[KCrash Handler]
#6  0x00007fdb8ee7bdc1 in KIO::DropJob::setApplicationActions(QList<QAction*> const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOWidgets.so.5
#7  0x00007fdb729b9aa9 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#8  0x00007fdb729ba8a0 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/scriptengines/plasma_appletscript_declarative.so
#9  0x00007fdb91632645 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdb8a65ba47 in KIO::TransferJob::mimetype(KIO::Job*, QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#11 0x00007fdb8a65c202 in KIO::TransferJob::slotMimetype(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#12 0x00007fdb8a65d33d in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#13 0x00007fdb91632645 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fdb8a629395 in KIO::SlaveInterface::mimeType(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#15 0x00007fdb8a62c8ab in KIO::SlaveInterface::dispatch(int, QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#16 0x00007fdb8a629507 in KIO::SlaveInterface::dispatch() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#17 0x00007fdb8a62ea01 in KIO::Slave::gotInput() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#18 0x00007fdb91632645 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fdb8a5d1f69 in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#20 0x00007fdb916331b2 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fdb9260b83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fdb92613104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fdb916039c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fdb9160613d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fdb9165d353 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fdb8b87b417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fdb8b87b650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007fdb8b87b6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fdb9165c97f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fdb916019fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fdb9160aaa4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x000055575102ed6a in  ()
#33 0x00007fdb90c20b97 in __libc_start_main (main=0x55575102e390, argc=1, argv=0x7ffc3b225538, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc3b225528) at ../csu/libc-start.c:310
#34 0x000055575102f10a in _start ()

Reported using DrKonqi
Comment 1 Justin Zobel 2020-12-06 21:16:36 UTC 
Thank you for the report.

As this was reported on an older version of plasmashell, can you please test on a recent and confirm if this issue is still occurring or if this bug report can be marked as resolved.

I have set the bug status to "needsinfo" pending your response, please change back to "reported" or "resolved/worksforme" when you respond, thank you.
Comment 2 Bug Janitor Service 2020-12-21 04:34:41 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 3 Bug Janitor Service 2021-01-05 04:34:08 UTC 
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now 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

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