STEPS TO REPRODUCE
1. start krita

OBSERVED RESULT
krita crashes after showing the start/loading window and before the main window comes up

SOFTWARE/OS VERSIONS
Krita: 4.4.0
KDE Plasma Version: 5.20.0
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.1

ADDITIONAL INFORMATION

Output:

profileForCsIdWithFallbackImpl couldn't fetch a fallback profile for  Chemical proof
qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point
QPngHandler: Failed to parse ICC profile
qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point
QPngHandler: Failed to parse ICC profile
qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point
QPngHandler: Failed to parse ICC profile
qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point
QPngHandler: Failed to parse ICC profile
qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point
QPngHandler: Failed to parse ICC profile
qt.gui.icc: fromIccProfile: Invalid ICC profile - invalid white-point
QPngHandler: Failed to parse ICC profile
QObject::startTimer: Timers cannot have negative intervals
KCrash: Application 'krita' crashing...



Backtrace:
Application: krita (krita), signal: Segmentation fault
Content of s_kcrashErrorMessage: (null)
[New LWP 3373961]
[New LWP 3373962]
[New LWP 3373963]
[New LWP 3373964]
[New LWP 3373965]
[New LWP 3373969]
[New LWP 3373970]
[New LWP 3373971]
[New LWP 3373972]
[New LWP 3373973]
[New LWP 3373974]
[New LWP 3373975]
[New LWP 3373976]
[New LWP 3373977]
[New LWP 3373978]
[New LWP 3373979]
[New LWP 3373980]
[New LWP 3373987]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/x86_64-pc-linux-gnu/lib/libthread_db.so.1".
0x00007efc9b445e9f in poll () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6
[Current thread is 1 (Thread 0x7efc96b6d880 (LWP 3373944))]

Thread 19 (Thread 0x7efc527fc640 (LWP 3373987)):
#0  0x00007efc99059169 in g_mutex_lock (mutex=mutex@entry=0x7efc2c000c20) at ../glib-2.66.1/glib/gthread-posix.c:1485
#1  0x00007efc99009f7f in g_main_context_check (context=context@entry=0x7efc2c000c20, max_priority=2147483647, fds=fds@entry=0x7efc2c004a60, n_fds=n_fds@entry=1) at ../glib-2.66.1/glib/gmain.c:3838
#2  0x00007efc9900a67e in g_main_context_iterate (context=context@entry=0x7efc2c000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib-2.66.1/glib/gmain.c:4089
#3  0x00007efc9900a7df in g_main_context_iteration (context=0x7efc2c000c20, may_block=may_block@entry=1) at ../glib-2.66.1/glib/gmain.c:4157
#4  0x00007efc9ba1fb1b in QEventDispatcherGlib::processEvents (this=0x7efc2c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007efc9b9c6d43 in QEventLoop::exec (this=this@entry=0x7efc527fbca0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007efc9b7f6a0e in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d702bc3500) at thread/qthread_unix.cpp:329
#8  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#9  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 18 (Thread 0x7efc52ffd640 (LWP 3373980)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d7051712e0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d7051712e0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d705175f10, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d705175f00) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d705175f00) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 17 (Thread 0x7efc537fe640 (LWP 3373979)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d704719cb0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d704719cb0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d705176c90, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d705176c80) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d705176c80) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 16 (Thread 0x7efc4b7fe640 (LWP 3373978)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d705180570) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d705180570) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d705171960, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d705171950) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d705171950) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 15 (Thread 0x7efc53fff640 (LWP 3373977)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d704f3d7b0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d704f3d7b0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d705184350, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d705184340) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d705184340) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 14 (Thread 0x7efc74ff9640 (LWP 3373976)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d7051974f0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d7051974f0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d7051760d0, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d7051760c0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d7051760c0) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 13 (Thread 0x7efc757fa640 (LWP 3373975)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d7055d4ab0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d7055d4ab0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d704f50050, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d704f50040) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d704f50040) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 12 (Thread 0x7efc75ffb640 (LWP 3373974)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d705089640) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d705089640) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d70506a9d0, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d70506a9c0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d70506a9c0) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 11 (Thread 0x7efc767fc640 (LWP 3373973)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d705eabb50) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d705eabb50) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d70508dc50, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d70508dc40) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d70508dc40) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 10 (Thread 0x7efc76ffd640 (LWP 3373972)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d7051a9350) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d7051a9350) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d705010400, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d7050103f0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d7050103f0) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 9 (Thread 0x7efc777fe640 (LWP 3373971)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d7051dfde0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d7051dfde0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d704ff90a0, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d704ff9090) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d704ff9090) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 8 (Thread 0x7efc77fff640 (LWP 3373970)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d704f6af00) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d704f6af00) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d705093440, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d705093430) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d705093430) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 7 (Thread 0x7efc84e52640 (LWP 3373969)):
#0  0x00007efc99983a48 in pthread_cond_timedwait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc9b7fd65f in QWaitConditionPrivate::wait_relative (deadline=..., this=0x55d705f4efe0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55d705f4efe0) at thread/qwaitcondition_unix.cpp:144
#3  QWaitCondition::wait (this=this@entry=0x55d7051dd9f0, mutex=mutex@entry=0x55d702b38888, deadline=...) at thread/qwaitcondition_unix.cpp:225
#4  0x00007efc9b7fb7ab in QThreadPoolThread::run (this=0x55d7051dd9e0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#5  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x55d7051dd9e0) at thread/qthread_unix.cpp:329
#6  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#7  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 6 (Thread 0x7efc8d209640 (LWP 3373965)):
#0  0x00007efc9b4419bc in read () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6
#1  0x00007efc990547cf in g_wakeup_acknowledge (wakeup=0x7efc90001570) at ../glib-2.66.1/glib/gwakeup.c:210
#2  0x00007efc9900a24b in g_main_context_check (context=context@entry=0x7efc70000c20, max_priority=2147483647, fds=fds@entry=0x7efc7001b820, n_fds=n_fds@entry=1) at ../glib-2.66.1/glib/gmain.c:3857
#3  0x00007efc9900a67e in g_main_context_iterate (context=context@entry=0x7efc70000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib-2.66.1/glib/gmain.c:4089
#4  0x00007efc9900a7df in g_main_context_iteration (context=0x7efc70000c20, may_block=may_block@entry=1) at ../glib-2.66.1/glib/gmain.c:4157
#5  0x00007efc9ba1fb1b in QEventDispatcherGlib::processEvents (this=0x7efc70000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007efc9b9c6d43 in QEventLoop::exec (this=this@entry=0x7efc8d208c60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#7  0x00007efc9b7f6a0e in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007efc999ad917 in QDBusConnectionManager::run (this=0x7efc99a17dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#9  0x00007efc9b7f7a50 in QThreadPrivate::start (arg=0x7efc99a17dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329
#10 0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#11 0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 5 (Thread 0x7efc8db03640 (LWP 3373964)):
#0  0x00007efc99983715 in pthread_cond_wait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc94892e7b in cnd_wait (mtx=0x7efc7c0016e8, cond=0x7efc7c001710) at ../mesa-20.1.9/include/c11/threads_posix.h:155
#2  util_queue_thread_func (input=input@entry=0x55d701879e60) at ../mesa-20.1.9/src/util/u_queue.c:275
#3  0x00007efc948929d7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.1.9/include/c11/threads_posix.h:87
#4  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#5  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 4 (Thread 0x7efc8ffff640 (LWP 3373963)):
#0  0x00007efc99983715 in pthread_cond_wait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc94892e7b in cnd_wait (mtx=0x7efc7c0016e8, cond=0x7efc7c001710) at ../mesa-20.1.9/include/c11/threads_posix.h:155
#2  util_queue_thread_func (input=input@entry=0x55d701879c80) at ../mesa-20.1.9/src/util/u_queue.c:275
#3  0x00007efc948929d7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.1.9/include/c11/threads_posix.h:87
#4  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#5  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 3 (Thread 0x7efc8f7fe640 (LWP 3373962)):
#0  0x00007efc99983715 in pthread_cond_wait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc94892e7b in cnd_wait (mtx=0x7efc7c0016e8, cond=0x7efc7c001710) at ../mesa-20.1.9/include/c11/threads_posix.h:155
#2  util_queue_thread_func (input=input@entry=0x55d701879cc0) at ../mesa-20.1.9/src/util/u_queue.c:275
#3  0x00007efc948929d7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.1.9/include/c11/threads_posix.h:87
#4  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#5  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 2 (Thread 0x7efc87fff640 (LWP 3373961)):
#0  0x00007efc99983715 in pthread_cond_wait () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#1  0x00007efc94892e7b in cnd_wait (mtx=0x7efc7c0016e8, cond=0x7efc7c001710) at ../mesa-20.1.9/include/c11/threads_posix.h:155
#2  util_queue_thread_func (input=input@entry=0x55d701879ce0) at ../mesa-20.1.9/src/util/u_queue.c:275
#3  0x00007efc948929d7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.1.9/include/c11/threads_posix.h:87
#4  0x00007efc9997d4d6 in start_thread () from /usr/x86_64-pc-linux-gnu/lib/libpthread.so.0
#5  0x00007efc9b450e63 in clone () from /usr/x86_64-pc-linux-gnu/lib/libc.so.6

Thread 1 (Thread 0x7efc96b6d880 (LWP 3373944)):
[KCrash Handler]
#5  0x00007efc9ac200f5 in KisVisualColorSelector::slotSetColorSpace (this=0x55d70b8df120, cs=0x55d7033fa000) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/widgets/KisVisualColorSelector.cpp:118
#6  0x00007efc9ac1e1a7 in KisVisualColorSelector::slotSetColor (this=0x55d70b8df120, c=...) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/pigment/KoColor.h:91
#7  0x00007efc9ac26e8c in KisDlgInternalColorSelector::KisDlgInternalColorSelector (this=0x55d70b8de9c0, parent=<optimized out>, color=..., config=..., caption=..., displayRenderer=<optimized out>) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/widgets/KisDlgInternalColorSelector.cpp:98
#8  0x00007efc9de77c9f in KoDualColorButton::Private::init (this=0x55d70b8cdf90, q=0x55d70b8dd6a0) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/pigment/KoColor.h:269
#9  0x00007efc9de7ae1c in KoDualColorButton::KoDualColorButton (this=0x55d70b8dd6a0, foregroundColor=..., backgroundColor=..., displayRenderer=<optimized out>, parent=<optimized out>, dialogParent=<optimized out>) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/ui/widgets/KoDualColorButton.cpp:126
#10 0x00007efc9dcd4452 in KisControlFrame::setup (this=0x55d70a85e2c0, parent=parent@entry=0x55d70a6c8440) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/ui/kis_control_frame.cpp:108
#11 0x00007efc9df6e243 in KisViewManager::KisViewManager (this=0x55d70a85df80, parent=0x55d70a6c8440, _actionCollection=0x7ffef6b681d0) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/ui/KisViewManager.cpp:289
#12 0x00007efc9df44068 in KisMainWindow::KisMainWindow (this=<optimized out>, uuid=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/ui/KisMainWindow.cpp:336
#13 0x00007efc9df4eaa7 in KisPart::createMainWindow (this=0x7efc9ede0080 <(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder>, id=...) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/ui/KisPart.cpp:239
#14 0x00007efc9df4f1da in KisPart::startBlankSession (this=<optimized out>) at /usr/x86_64-pc-linux-gnu/include/qt5/QtCore/quuid.h:96
#15 0x00007efc9df10532 in KisApplication::start (this=0x7ffef6b688b0, args=...) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/libs/ui/KisApplication.cpp:456
#16 0x000055d6fe8c8677 in main (argc=<optimized out>, argv=0x7ffef6b68a28) at /var/tmp/paludis/build/media-gfx-krita-4.4.0/work/krita-4.4.0/krita/main.cc:614
[Inferior 1 (process 3373944) detached]