Bug 403858

Summary: Central de aplicativos fevhando sozinha
Product: [Applications] Discover Reporter: Matheus Novais <matheus.novais734>
Component: discoverAssignee: Dan Leinir Turthra Jensen <leinir>
Status: RESOLVED DUPLICATE    
Severity: crash CC: aleixpol, nate, stroncea.nicolae
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.14.5   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Matheus Novais 2019-02-02 13:03:36 UTC 
Application: plasma-discover (5.14.5)

Qt Version: 5.11.2
Frameworks Version: 5.54.0
Operating System: Linux 4.15.0-45-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
- What I was doing when the application crashed:

Toda vez que tento abrir para instalar um app ou fazer uma atualização ela simplemente fecha

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f05280c9200 (LWP 3951))]

Thread 18 (Thread 0x7f04aeffd700 (LWP 3978)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fe2a6ba0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fe2a6b50, cond=0x55b9fe2a6b78) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fe2a6b78, mutex=0x55b9fe2a6b50) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04aeffd700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f04af7fe700 (LWP 3977)):
#0  0x00007f051dbd3064 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f051db8ca88 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d46b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0523f5e04b in QEventDispatcherGlib::processEvents (this=0x7f049c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7f04af7fdda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f0523d2dbba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007f0523d38adb in QThreadPrivate::start (arg=0x55b9fade2f40) at thread/qthread_unix.cpp:367
#8  0x00007f051fd296db in start_thread (arg=0x7f04af7fe700) at pthread_create.c:463
#9  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f04c219d700 (LWP 3971)):
#0  0x00007f0523623bf9 in __GI___poll (fds=0x7f04a80024c0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f051db8d539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0523f5e04b in QEventDispatcherGlib::processEvents (this=0x7f04b0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7f04c219cda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f0523d2dbba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f0523d38adb in QThreadPrivate::start (arg=0x55b9fc587660) at thread/qthread_unix.cpp:367
#7  0x00007f051fd296db in start_thread (arg=0x7f04c219d700) at pthread_create.c:463
#8  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f04c3fff700 (LWP 3969)):
#0  0x00007f0523623bf9 in __GI___poll (fds=0x55b9fb01a850, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f051db8d539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d8d2 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f04ce04d026 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f051dbb5105 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f051fd296db in start_thread (arg=0x7f04c3fff700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f04c8d0f700 (LWP 3968)):
#0  0x00007f051dbd3049 in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f051db8d51f in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f051db8d691 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f051dbb5105 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f051fd296db in start_thread (arg=0x7f04c8d0f700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f04ca1f2700 (LWP 3967)):
#0  0x00007f052361f0b4 in __GI___libc_read (fd=16, buf=0x7f04ca1f1b90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f051dbd1cd0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d027 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f051db8d4e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0523f5e04b in QEventDispatcherGlib::processEvents (this=0x7f04c4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7f04ca1f1da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f0523d2dbba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#8  0x00007f0523d38adb in QThreadPrivate::start (arg=0x55b9fafb7160) at thread/qthread_unix.cpp:367
#9  0x00007f051fd296db in start_thread (arg=0x7f04ca1f2700) at pthread_create.c:463
#10 0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f04dffff700 (LWP 3966)):
#0  0x00007f0523623bf9 in __GI___poll (fds=0x7f04d4004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f051db8d539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0523f5e04b in QEventDispatcherGlib::processEvents (this=0x7f04d4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7f04dfffed30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f0523d2dbba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f052733d826 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f0523d38adb in QThreadPrivate::start (arg=0x55b9fac89130) at thread/qthread_unix.cpp:367
#8  0x00007f051fd296db in start_thread (arg=0x7f04dffff700) at pthread_create.c:463
#9  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f04f4d37700 (LWP 3963)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa5ea008) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa5e9fb8, cond=0x55b9fa5e9fe0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa5e9fe0, mutex=0x55b9fa5e9fb8) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f4d37700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f04f5538700 (LWP 3962)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa5ea008) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa5e9fb8, cond=0x55b9fa5e9fe0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa5e9fe0, mutex=0x55b9fa5e9fb8) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f5538700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f04f5d39700 (LWP 3961)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa5e9a8c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa5e9a38, cond=0x55b9fa5e9a60) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa5e9a60, mutex=0x55b9fa5e9a38) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f5d39700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f04f653a700 (LWP 3960)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa5e9a8c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa5e9a38, cond=0x55b9fa5e9a60) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa5e9a60, mutex=0x55b9fa5e9a38) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f653a700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f04f6d3b700 (LWP 3959)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa5e9a8c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa5e9a38, cond=0x55b9fa5e9a60) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa5e9a60, mutex=0x55b9fa5e9a38) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f6d3b700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f04f753c700 (LWP 3958)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa52dde8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa52dd98, cond=0x55b9fa52ddc0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa52ddc0, mutex=0x55b9fa52dd98) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f753c700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f04f857f700 (LWP 3957)):
#0  0x00007f051fd2f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9fa5e2358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9fa5e2308, cond=0x55b9fa5e2330) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9fa5e2330, mutex=0x55b9fa5e2308) at pthread_cond_wait.c:655
#3  0x00007f04fd66223b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f04fd661f67 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f051fd296db in start_thread (arg=0x7f04f857f700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f05075ef700 (LWP 3956)):
#0  0x00007f0523623bf9 in __GI___poll (fds=0x7f0500004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f051db8d539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0523f5e04b in QEventDispatcherGlib::processEvents (this=0x7f0500000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7f05075eed80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f0523d2dbba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f05248d54f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f0523d38adb in QThreadPrivate::start (arg=0x55b9fa3ffde0) at thread/qthread_unix.cpp:367
#8  0x00007f051fd296db in start_thread (arg=0x7f05075ef700) at pthread_create.c:463
#9  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f050cdf8700 (LWP 3955)):
#0  0x00007f0523623bf9 in __GI___poll (fds=0x7f0508019540, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f051db8d539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0523f5e04b in QEventDispatcherGlib::processEvents (this=0x7f0508000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7f050cdf7d70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f0523d2dbba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f0525c2fe45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f0523d38adb in QThreadPrivate::start (arg=0x7f0525ea7d60) at thread/qthread_unix.cpp:367
#8  0x00007f051fd296db in start_thread (arg=0x7f050cdf8700) at pthread_create.c:463
#9  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f051564a700 (LWP 3954)):
#0  0x00007f0523623bf9 in __GI___poll (fds=0x7f0515649ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f051d2c2747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f051d2c436a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f051860aed9 in QXcbEventReader::run (this=0x55b9fa33c400) at qxcbconnection.cpp:1391
#4  0x00007f0523d38adb in QThreadPrivate::start (arg=0x55b9fa33c400) at thread/qthread_unix.cpp:367
#5  0x00007f051fd296db in start_thread (arg=0x7f051564a700) at pthread_create.c:463
#6  0x00007f052363088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f05280c9200 (LWP 3951)):
[KCrash Handler]
#6  0x00007f0526fd6d62 in AbstractResource::reportNewState (this=0x55b9fdd59460) at ./libdiscover/resources/AbstractResource.cpp:143
#7  0x00007f0523f3318f in QtPrivate::QSlotObjectBase::call (a=0x7ffff45dbc00, r=0x55b9fdd59460, this=0x7f04b8012be0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:376
#8  QMetaObject::activate (sender=sender@entry=0x55b9fdd59460, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at kernel/qobject.cpp:3754
#9  0x00007f0523f33747 in QMetaObject::activate (sender=sender@entry=0x55b9fdd59460, m=m@entry=0x7f0527209400 <AbstractResource::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at kernel/qobject.cpp:3633
#10 0x00007f0526fe7cf3 in AbstractResource::stateChanged (this=this@entry=0x55b9fdd59460) at ./obj-x86_64-linux-gnu/libdiscover/DiscoverCommon_autogen/3YJK5W5UP7/moc_AbstractResource.cpp:430
#11 0x00007f04c8f35a2d in FwupdResource::setState (this=this@entry=0x55b9fdd59460, state=state@entry=AbstractResource::Upgradeable) at ./libdiscover/backends/FwupdBackend/FwupdResource.cpp:141
#12 0x00007f04c8f3acb5 in FwupdBackend::createApp (this=this@entry=0x55b9fb00c110, device=device@entry=0x55b9fb068e00) at ./libdiscover/backends/FwupdBackend/FwupdBackend.cpp:235
#13 0x00007f04c8f3b4e7 in FwupdBackend::addUpdates (this=0x55b9fb00c110) at ./libdiscover/backends/FwupdBackend/FwupdBackend.cpp:146
#14 0x00007f04c8f3bdc1 in FwupdBackend::<lambda()>::operator() (__closure=0x55b9fb030490) at ./libdiscover/backends/FwupdBackend/FwupdBackend.cpp:414
#15 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, FwupdBackend::checkForUpdates()::<lambda()> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:128
#16 QtPrivate::Functor<FwupdBackend::checkForUpdates()::<lambda()>, 0>::call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:238
#17 QtPrivate::QFunctorSlotObject<FwupdBackend::checkForUpdates()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x55b9fb030480, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:421
#18 0x00007f0523f3318f in QtPrivate::QSlotObjectBase::call (a=0x7ffff45dbef0, r=0x55b9fb00c110, this=0x55b9fb030480) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:376
#19 QMetaObject::activate (sender=0x55b9fa994270, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3754
#20 0x00007f0523d36223 in QFutureWatcherBase::event (this=<optimized out>, event=0x7f04b800a430) at thread/qfuturewatcher.cpp:332
#21 0x00007f052551fe1c in QApplicationPrivate::notify_helper (this=this@entry=0x55b9fa342520, receiver=receiver@entry=0x55b9fa994270, e=e@entry=0x7f04b800a430) at kernel/qapplication.cpp:3727
#22 0x00007f05255273ef in QApplication::notify (this=0x7ffff45dc500, receiver=0x55b9fa994270, e=0x7f04b800a430) at kernel/qapplication.cpp:3486
#23 0x00007f0523f03fe8 in QCoreApplication::notifyInternal2 (receiver=0x55b9fa994270, event=event@entry=0x7f04b800a430) at kernel/qcoreapplication.cpp:1048
#24 0x00007f0523f06b2d in QCoreApplication::sendEvent (event=0x7f04b800a430, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x55b9fa341f30) at kernel/qcoreapplication.cpp:1745
#26 0x00007f0523f070e8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#27 0x00007f0523f5e9f3 in postEventSourceDispatch (s=0x55b9fa3919f0) at kernel/qeventdispatcher_glib.cpp:276
#28 0x00007f051db8d387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f051db8d5c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f051db8d64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f0523f5e02f in QEventDispatcherGlib::processEvents (this=0x55b9fa3ae6b0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#32 0x00007f0518696761 in QPAEventDispatcherGlib::processEvents (this=0x55b9fa3ae6b0, flags=...) at qeventdispatcher_glib.cpp:69
#33 0x00007f0523f0230a in QEventLoop::exec (this=this@entry=0x7ffff45dc440, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#34 0x00007f0523f0b4d0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#35 0x000055b9f88da868 in main (argc=<optimized out>, argv=<optimized out>) at ./discover/main.cpp:156

Possible duplicates by query: bug 403538, bug 403383, bug 403341, bug 403290, bug 403256.

Reported using DrKonqi
Comment 1 Nick 2019-02-02 17:11:10 UTC 
Ways to replicate:

This happens if I use a LogiTech wireless mouse. Discover will crash whilst usb drive of the mouse is plugged in. If I unplug it, Discover returns back to normal.
Comment 2 Nate Graham 2019-02-05 21:13:59 UTC 

*** This bug has been marked as a duplicate of bug 402328 ***