Bug 406081 - Krunner crashes When trying to open konsole.
Summary: Krunner crashes When trying to open konsole.
Status: RESOLVED WORKSFORME
Alias: None
Product: krunner
Classification: Plasma
Component: general (show other bugs)
Version: 5.15.3
Platform: Neon Linux
: NOR crash
Target Milestone: ---
Assignee: Kai Uwe Broulik
URL:
Keywords: drkonqi
: 407891 (view as bug list)
Depends on:
Blocks:
 
Reported: 2019-03-31 14:35 UTC by Nazmul Ahasan
Modified: 2021-01-01 04:39 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:

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Description Nazmul Ahasan 2019-03-31 14:35:04 UTC 
Application: krunner (5.15.3)

Qt Version: 5.12.0
Frameworks Version: 5.56.0
Operating System: Linux 4.19.32-041932-generic x86_64
Distribution: KDE neon User Edition 5.15

-- Information about the crash:
When I open krunner with ctrl+space and type kon then krunner crashes

The crash can be reproduced sometimes.

-- Backtrace:
Application: krunner (krunner), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
[Current thread is 1 (Thread 0x7fab7a1cb840 (LWP 1277))]

Thread 13 (Thread 0x7fab32ffd700 (LWP 7425)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb8842 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fab730706db in start_thread (arg=0x7fab32ffd700) at pthread_create.c:463
#13 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fab337fe700 (LWP 7424)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fab730706db in start_thread (arg=0x7fab337fe700) at pthread_create.c:463
#11 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fab33fff700 (LWP 7423)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fab730706db in start_thread (arg=0x7fab33fff700) at pthread_create.c:463
#11 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fab38a9d700 (LWP 7422)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb8842 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fab730706db in start_thread (arg=0x7fab38a9d700) at pthread_create.c:463
#13 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fab3929e700 (LWP 7421)):
[KCrash Handler]
#6  0x00007fab756dce97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007fab756de801 in __GI_abort () at abort.c:79
#8  0x00007fab75727897 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fab75854b9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#9  0x00007fab7572e90a in malloc_printerr (str=str@entry=0x7fab75856890 "double free or corruption (!prev)") at malloc.c:5350
#10 0x00007fab75735e84 in _int_free (have_lock=0, p=0x56191a085840, av=0x7fab75a89c40 <main_arena>) at malloc.c:4281
#11 0x00007fab75735e84 in __GI___libc_free (mem=0x56191a085850) at malloc.c:3124
#12 0x00007fab766f91c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007fab766f72c0 in QIcon::fromTheme(QString const&) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007fab4575e5d1 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_appstream.so
#15 0x00007fab4575edcf in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/krunner_appstream.so
#16 0x00007fab4fdd7630 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () at /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#17 0x00007fab4fbb7fa8 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#18 0x00007fab4fbb6c10 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#19 0x00007fab4fbb676d in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#20 0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fab730706db in start_thread (arg=0x7fab3929e700) at pthread_create.c:463
#22 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fab3129e700 (LWP 7420)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb8842 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fab730706db in start_thread (arg=0x7fab3129e700) at pthread_create.c:463
#13 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fab39a9f700 (LWP 7419)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fab730706db in start_thread (arg=0x7fab39a9f700) at pthread_create.c:463
#11 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fab3a2a0700 (LWP 7418)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56191a0a5be0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56191a0a5b90, cond=0x56191a0a5bb8) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x56191a0a5bb8, mutex=0x56191a0a5b90) at pthread_cond_wait.c:655
#3  0x00007fab75ec6b4b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ec6e59 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab4fbb4935 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007fab4fbb87e8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007fab4fbb8842 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007fab4fbb3bfd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#10 0x00007fab4fbb66ab in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#11 0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fab730706db in start_thread (arg=0x7fab3a2a0700) at pthread_create.c:463
#13 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fab56dee700 (LWP 1360)):
#0  0x00007fab757b2bf9 in __GI___poll (fds=0x7fab48004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fab70a97539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fab70a9764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fab760f515b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab7609664a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab75ebe41a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fab78d2c2e5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fab730706db in start_thread (arg=0x7fab56dee700) at pthread_create.c:463
#9  0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fab57fff700 (LWP 1359)):
#0  0x00007fab730769f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561919d264c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fab730769f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x561919d26478, cond=0x561919d264a0) at pthread_cond_wait.c:502
#2  0x00007fab730769f3 in __pthread_cond_wait (cond=0x561919d264a0, mutex=0x561919d26478) at pthread_cond_wait.c:655
#3  0x00007fab5d7fbdcb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fab5d7fbaf7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fab730706db in start_thread (arg=0x7fab57fff700) at pthread_create.c:463
#6  0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fab5ffff700 (LWP 1341)):
#0  0x00007fab757ae0b4 in __GI___libc_read (fd=7, buf=0x7fab5fffeb20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fab70adbcd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fab70a97027 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fab70a974e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fab70a9764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fab760f515b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fab7609664a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fab75ebe41a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fab76d49015 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fab730706db in start_thread (arg=0x7fab5ffff700) at pthread_create.c:463
#11 0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fab66b24700 (LWP 1288)):
#0  0x00007fab757b2bf9 in __GI___poll (fds=0x7fab66b23c78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fab74bad747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fab74baf36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fab67a7532a in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fab75ebfbc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab730706db in start_thread (arg=0x7fab66b24700) at pthread_create.c:463
#6  0x00007fab757bf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fab7a1cb840 (LWP 1277)):
#0  0x00007fab757ce6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fab75736f7e in __GI___libc_realloc (oldmem=0x56191b9835d0, bytes=64) at malloc.c:3228
#2  0x00007fab75ecd129 in QArrayData::reallocateUnaligned(QArrayData*, unsigned long, unsigned long, QFlags<QArrayData::AllocationOption>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fab75ecf9ca in QByteArray::reallocData(unsigned int, QFlags<QArrayData::AllocationOption>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fab75ecfb9a in QByteArray::resize(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fab760fcd0e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fab760fd085 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fab760faa8c in QTextCodec::fromUnicode(QStringView) const () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fab75f4a1d1 in QString::toLocal8Bit_helper(QChar const*, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fab77a99c4e in  () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#10 0x00007fab77a9abe8 in  () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#11 0x00007fab760c7e25 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fab760d4c57 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fab760d4fb8 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fab760c894b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fab7711d83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fab77124dd0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fab76098328 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fab760f45a9 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fab760f4d71 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fab70a97387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fab70a975c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fab70a9764c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fab760f513f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fab7609664a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fab7609f800 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00005619182ce745 in  ()
#27 0x00007fab756bfb97 in __libc_start_main (main=0x5619182ce390, argc=1, argv=0x7fffa000bf08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa000bef8) at ../csu/libc-start.c:310
#28 0x00005619182ce7da in _start ()

Possible duplicates by query: bug 405175, bug 404502, bug 394640.

Reported using DrKonqi
Comment 1 Christoph Feck 2019-04-19 09:41:01 UTC 
Memory corruption in "appstream" runner. Probably needs a valgrind log to be able to investigate.
Comment 2 Christoph Feck 2019-06-14 11:13:51 UTC 
*** Bug 407891 has been marked as a duplicate of this bug. ***
Comment 3 Justin Zobel 2020-12-02 03:18:01 UTC 
Thanks for the report, Nazmul.

If this issue is still occurring can you please provide the valgrind log as requested in Comment 1, thank you.
Comment 4 Bug Janitor Service 2020-12-17 04:34:20 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 5 Bug Janitor Service 2021-01-01 04:39:41 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!