Bug 393986

Summary: plasmashell PID: 4969 Signal: Segmentation fault
Product: [Plasma] plasmashell Reporter: zlg <zak.le.grange>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: kde, nick.craig.law, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.12.4   
Target Milestone: 1.0   
Platform: Debian testing   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description zlg 2018-05-08 09:15:41 UTC 
Application: plasmashell (5.12.4)

Qt Version: 5.10.1
Frameworks Version: 5.44.0
Operating System: Linux 4.16.0-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

-- Information about the crash:
- What I was doing when the application crashed:When typing to search for something in the Application menu, after three letters is crashes. After the 3rd crash in a row, the bottom panel will not recover. If I type one or two letters is works as expected.

The crash can be reproduced every time.

-- 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 0x7f7c1968a6c0 (LWP 4969))]

Thread 16 (Thread 0x7f7b31ffb700 (LWP 5326)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c124bc5aa in start_thread (arg=0x7f7b31ffb700) at pthread_create.c:463
#12 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f7b327fc700 (LWP 5325)):
[KCrash Handler]
#6  0x00007f7c1352bf80 in QVariant::QVariant(QVariant const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7b4a18ec8b in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers/libqsqlite.so
#8  0x00007f7b4a18c53e in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers/libqsqlite.so
#9  0x00007f7c11273304 in QSqlQuery::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5
#10 0x00007f7b4200bddc in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#11 0x00007f7b4200e14a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#12 0x00007f7b4200931d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#13 0x00007f7b42006f4d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#14 0x00007f7b4201085a in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_bookmarksrunner.so
#15 0x00007f7b4bb16390 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#16 0x00007f7b4b029fd8 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f7b4b028c40 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f7b4b02879d in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7c124bc5aa in start_thread (arg=0x7f7b327fc700) at pthread_create.c:463
#21 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f7b32ffd700 (LWP 5324)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c124bc5aa in start_thread (arg=0x7f7b32ffd700) at pthread_create.c:463
#12 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f7b337fe700 (LWP 5323)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f7c124bc5aa in start_thread (arg=0x7f7b337fe700) at pthread_create.c:463
#20 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f7b33fff700 (LWP 5322)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f7c124bc5aa in start_thread (arg=0x7f7b33fff700) at pthread_create.c:463
#18 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f7b40df3700 (LWP 5321)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f7c124bc5aa in start_thread (arg=0x7f7b40df3700) at pthread_create.c:463
#14 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f7b415f4700 (LWP 5320)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c124bc5aa in start_thread (arg=0x7f7b415f4700) at pthread_create.c:463
#12 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f7b41df5700 (LWP 5319)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555c99ab9004) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c99ab8fb0, cond=0x555c99ab8fd8) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x555c99ab8fd8, mutex=0x555c99ab8fb0) at pthread_cond_wait.c:655
#3  0x00007f7c13301fbb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7b4b026745 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#5  0x00007f7b4b02a818 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#12 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#13 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#14 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#15 0x00007f7b4b02a872 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#16 0x00007f7b4b0258fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#17 0x00007f7b4b0286db in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f7c124bc5aa in start_thread (arg=0x7f7b41df5700) at pthread_create.c:463
#20 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f7b59ed3700 (LWP 5265)):
#0  0x00007f7c12bfe094 in __GI___libc_read (fd=19, buf=0x7f7b59ed2ae0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f7c0d581960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7c0d53cf27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7c0d53d3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7c0d53d54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7c135421bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c134e5b6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c132fb7ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c17046586 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7c124bc5aa in start_thread (arg=0x7f7b59ed3700) at pthread_create.c:463
#11 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f7be9650700 (LWP 5076)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f7c19051fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f7c19051f68, cond=0x7f7c19051f90) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x7f7c19051f90, mutex=0x7f7c19051f68) at pthread_cond_wait.c:655
#3  0x00007f7c18d5b6a4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f7c18d5b6e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f7c124bc5aa in start_thread (arg=0x7f7be9650700) at pthread_create.c:463
#6  0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f7beb365700 (LWP 5057)):
#0  0x00007f7c135424d0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f7c0d53c998 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7c0d53d36b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7c0d53d54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7c135421bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c134e5b6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c132fb7ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c124bc5aa in start_thread (arg=0x7f7beb365700) at pthread_create.c:463
#9  0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7bf915e700 (LWP 5054)):
#0  0x00007f7c12c025d9 in __GI___poll (fds=0x7f7bf0003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7c0d53d439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7c0d53d54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7c135421bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7c134e5b6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c132fb7ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c16497885 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c124bc5aa in start_thread (arg=0x7f7bf915e700) at pthread_create.c:463
#9  0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7bfa9e1700 (LWP 5046)):
#0  0x00007fffb477f979 in  ()
#1  0x00007fffb477fc30 in clock_gettime ()
#2  0x00007f7c12c1a696 in __GI___clock_gettime (clock_id=1, tp=0x7f7bfa9e0ab0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f7c13541ad1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7c13540309 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c135408e5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c13541f2e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c0d53c998 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f7c0d53d36b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f7c0d53d54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f7c135421bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c134e5b6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f7c132fb7ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f7c16497885 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f7c124bc5aa in start_thread (arg=0x7f7bfa9e1700) at pthread_create.c:463
#16 0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7bfbfff700 (LWP 5014)):
#0  0x00007f7c12c025d9 in __GI___poll (fds=0x7f7bf4012d70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7c0d53d439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7c0d53d54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7c135421bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7c134e5b6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c132fb7ea in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c13965df5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c124bc5aa in start_thread (arg=0x7f7bfbfff700) at pthread_create.c:463
#9  0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7c028e1700 (LWP 4983)):
#0  0x00007f7c12c025d9 in __GI___poll (fds=0x7f7c028e0c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7c17c7a0f7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7c17c7bd1a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7c04e64b19 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f7c13300b4f in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c124bc5aa in start_thread (arg=0x7f7c028e1700) at pthread_create.c:463
#6  0x00007f7c12c0ccbf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7c1968a6c0 (LWP 4969)):
#0  0x00007f7c124c24ec in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fffb4615308) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7c124c24ec in __pthread_cond_wait_common (abstime=0x0, mutex=0x555c975331c8, cond=0x7fffb46152e0) at pthread_cond_wait.c:502
#2  0x00007f7c124c24ec in __pthread_cond_wait (cond=0x7fffb46152e0, mutex=0x555c975331c8) at pthread_cond_wait.c:655
#3  0x00007f7c17c7a302 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f7c17c7ba1f in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f7c17c7bb9f in xcb_wait_for_reply64 () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#6  0x00007f7c17ed9c38 in _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f7c081a6f8a in XSyncQueryCounter () at /usr/lib/x86_64-linux-gnu/libXext.so.6
#8  0x00007f7b46bcc294 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kidletime.platforms/KF5IdleTimeXcbPlugin0.so
#9  0x00007f7b4744ffbc in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_powermanagement.so
#10 0x00007f7c177ef99c in  () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#11 0x00007f7c13517195 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f7c177ea542 in Plasma::DataContainer::updateRequested(Plasma::DataContainer*) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#13 0x00007f7c17802208 in  () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#14 0x00007f7c13517cbb in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f7c144ce6cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f7c144d5e84 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f7c134e7938 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f7c1354163e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f7c13541e01 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7c0d53d287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f7c0d53d4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f7c0d53d54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f7c1354219f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f7c04ee9201 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#25 0x00007f7c134e5b6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f7c134eeed4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x0000555c960b2cfa in  ()
#28 0x00007f7c12b37a87 in __libc_start_main (main=0x555c960b2320, argc=1, argv=0x7fffb4615e68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb4615e58) at ../csu/libc-start.c:310
#29 0x0000555c960b309a in _start ()

Reported using DrKonqi
Comment 1 zlg 2018-05-09 10:59:00 UTC 
Deleted the baloo directory as some sites suggeted, but had no effect.
disabled most of the indexing, had no effect
ALT+F2 does not suffer from the same problem
Comment 2 Nick 2018-05-10 22:24:45 UTC 
I can't reproduce it, any letters in particular that you're typing ? What theme are you using ? Which launcher are you using, dashboard, launcher (the standard) or menu ?
Comment 3 Kai Uwe Broulik 2018-05-14 08:55:24 UTC 

*** This bug has been marked as a duplicate of bug 363136 ***