Application: akonadi_davgroupware_resource (akonadi_davgroupware_resource), signal: Segmentation fault Using host libthread_db library "/lib64/libthread_db.so.1". [Current thread is 1 (Thread 0x7fef244b5940 (LWP 2352))] Thread 5 (Thread 0x7fef0b630700 (LWP 2353)): #0 0x00007fef1eb1943d in poll () from /lib64/libc.so.6 #1 0x00007fef19373432 in ?? () from /usr/lib64/libxcb.so.1 #2 0x00007fef19375007 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1 #3 0x00007fef0d358dd9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5 #4 0x00007fef1f41f90f in ?? () from /usr/lib64/libQt5Core.so.5 #5 0x00007fef18f4f454 in start_thread () from /lib64/libpthread.so.0 #6 0x00007fef1eb21d8d in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7fef09d21700 (LWP 2354)): #0 0x00007fffafe0dc4f in clock_gettime () #1 0x00007fef1eb2e986 in clock_gettime () from /lib64/libc.so.6 #2 0x00007fef1f4cb156 in ?? () from /usr/lib64/libQt5Core.so.5 #3 0x00007fef1f642069 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5 #4 0x00007fef1f642595 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5 #5 0x00007fef1f64393e in ?? () from /usr/lib64/libQt5Core.so.5 #6 0x00007fef18a318bd in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0 #7 0x00007fef18a321c3 in ?? () from /usr/lib64/libglib-2.0.so.0 #8 0x00007fef18a3239c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #9 0x00007fef1f6444db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #10 0x00007fef1f5ee5ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #11 0x00007fef1f41aadc in QThread::exec() () from /usr/lib64/libQt5Core.so.5 #12 0x00007fef1f41f90f in ?? () from /usr/lib64/libQt5Core.so.5 #13 0x00007fef18f4f454 in start_thread () from /lib64/libpthread.so.0 #14 0x00007fef1eb21d8d in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7fef09520700 (LWP 2356)): #0 0x00007fef18a75530 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0 #1 0x00007fef18a31300 in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0 #2 0x00007fef18a32165 in ?? () from /usr/lib64/libglib-2.0.so.0 #3 0x00007fef18a3239c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #4 0x00007fef1f6444db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #5 0x00007fef1f5ee5ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #6 0x00007fef1f41aadc in QThread::exec() () from /usr/lib64/libQt5Core.so.5 #7 0x00007fef1f41f90f in ?? () from /usr/lib64/libQt5Core.so.5 #8 0x00007fef18f4f454 in start_thread () from /lib64/libpthread.so.0 #9 0x00007fef1eb21d8d in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7fef08d1f700 (LWP 2358)): #0 0x00007fef1eb1943d in poll () from /lib64/libc.so.6 #1 0x00007fef18a32294 in ?? () from /usr/lib64/libglib-2.0.so.0 #2 0x00007fef18a3239c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #3 0x00007fef1f6444db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #4 0x00007fef1f5ee5ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #5 0x00007fef1f41aadc in QThread::exec() () from /usr/lib64/libQt5Core.so.5 #6 0x00007fef1f41f90f in ?? () from /usr/lib64/libQt5Core.so.5 #7 0x00007fef18f4f454 in start_thread () from /lib64/libpthread.so.0 #8 0x00007fef1eb21d8d in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7fef244b5940 (LWP 2352)): [KCrash Handler] #6 QHash<QString, QHashDummyValue>::isEmpty (this=this@entry=0x18) at /usr/include/qt5/QtCore/qhash.h:357 #7 QHash<QString, QHashDummyValue>::remove (this=this@entry=0x18, akey=...) at /usr/include/qt5/QtCore/qhash.h:835 #8 0x000000000045dee9 in QSet<QString>::remove (value=..., this=0x18) at /usr/include/qt5/QtCore/qset.h:92 #9 EtagCache::removeEtag (this=this@entry=0x0, remoteId=...) at /usr/src/debug/kdepim-runtime-15.12.3/resources/dav/common/etagcache.cpp:67 #10 0x00000000004776d4 in DavGroupwareResource::onItemChangedFinished (this=0xa6c670, job=<optimized out>) at /usr/src/debug/kdepim-runtime-15.12.3/resources/dav/resource/davgroupwareresource.cpp:1033 #11 0x00007fef1f61dd97 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #12 0x00007fef2159cd32 in KJob::result (this=this@entry=0x1084bc0, _t1=_t1@entry=0x1084bc0) at /usr/src/debug/kcoreaddons-5.20.0/build/src/lib/moc_kjob.cpp:555 #13 0x00007fef2159d771 in KJob::finishJob (this=0x1084bc0, emitResult=<optimized out>) at /usr/src/debug/kcoreaddons-5.20.0/src/lib/jobs/kjob.cpp:109 #14 0x00007fef2159d78a in KJob::emitResult (this=<optimized out>) at /usr/src/debug/kcoreaddons-5.20.0/src/lib/jobs/kjob.cpp:293 #15 0x00000000004487ff in DavItemModifyJob::itemRefreshed (this=0x1084bc0, job=<optimized out>) at /usr/src/debug/kdepim-runtime-15.12.3/resources/dav/common/davitemmodifyjob.cpp:130 #16 0x00007fef1f61dd97 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #17 0x00007fef2159cd32 in KJob::result (this=this@entry=0xa95180, _t1=_t1@entry=0xa95180) at /usr/src/debug/kcoreaddons-5.20.0/build/src/lib/moc_kjob.cpp:555 #18 0x00007fef2159d771 in KJob::finishJob (this=0xa95180, emitResult=<optimized out>) at /usr/src/debug/kcoreaddons-5.20.0/src/lib/jobs/kjob.cpp:109 #19 0x00007fef2159d78a in KJob::emitResult (this=<optimized out>) at /usr/src/debug/kcoreaddons-5.20.0/src/lib/jobs/kjob.cpp:293 #20 0x0000000000447c45 in DavItemFetchJob::davJobFinished (this=0xa95180, job=<optimized out>) at /usr/src/debug/kdepim-runtime-15.12.3/resources/dav/common/davitemfetchjob.cpp:92 #21 0x00007fef1f61dd97 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #22 0x00007fef2159cd32 in KJob::result (this=this@entry=0xb09730, _t1=_t1@entry=0xb09730) at /usr/src/debug/kcoreaddons-5.20.0/build/src/lib/moc_kjob.cpp:555 #23 0x00007fef2159d771 in KJob::finishJob (this=0xb09730, emitResult=<optimized out>) at /usr/src/debug/kcoreaddons-5.20.0/src/lib/jobs/kjob.cpp:109 #24 0x00007fef2159d78a in KJob::emitResult (this=<optimized out>) at /usr/src/debug/kcoreaddons-5.20.0/src/lib/jobs/kjob.cpp:293 #25 0x00007fef2295bdf2 in KIO::SimpleJob::slotFinished (this=this@entry=0xb09730) at /usr/src/debug/kio-5.20.0/src/core/simplejob.cpp:230 #26 0x00007fef22964ef3 in KIO::TransferJob::slotFinished (this=0xb09730) at /usr/src/debug/kio-5.20.0/src/core/transferjob.cpp:166 #27 0x00007fef22964651 in KIO::TransferJob::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kio-5.20.0/build/src/core/moc_transferjob.cpp:155 #28 0x00007fef1f61df0a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #29 0x00007fef22940021 in KIO::SlaveInterface::dispatch (this=0xab6d40, _cmd=<optimized out>, rawdata=...) at /usr/src/debug/kio-5.20.0/src/core/slaveinterface.cpp:160 #30 0x00007fef2293d7d7 in KIO::SlaveInterface::dispatch (this=0xab6d40) at /usr/src/debug/kio-5.20.0/src/core/slaveinterface.cpp:89 #31 0x00007fef22941a52 in KIO::Slave::gotInput (this=0xab6d40) at /usr/src/debug/kio-5.20.0/src/core/slave.cpp:393 #32 0x00007fef229b8815 in KIO::Slave::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kio-5.20.0/build/src/core/moc_slave.cpp:87 #33 0x00007fef1f61df0a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #34 0x00007fef228f4f33 in KIO::Connection::readyRead (this=<optimized out>) at /usr/src/debug/kio-5.20.0/build/src/core/moc_connection_p.cpp:141 #35 KIO::ConnectionPrivate::dequeue (this=0xb21710) at /usr/src/debug/kio-5.20.0/src/core/connection.cpp:45 #36 0x00007fef1f61ecf9 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5 #37 0x00007fef20e5887c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #38 0x00007fef20e5d986 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #39 0x00007fef1f5f0c83 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5 #40 0x00007fef1f5f2fa6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5 #41 0x00007fef1f6440b3 in ?? () from /usr/lib64/libQt5Core.so.5 #42 0x00007fef18a320c7 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #43 0x00007fef18a322f8 in ?? () from /usr/lib64/libglib-2.0.so.0 #44 0x00007fef18a3239c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #45 0x00007fef1f6444bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #46 0x00007fef1f5ee5ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5 #47 0x00007fef1f5f628d in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5 #48 0x00007fef237fdb4e in Akonadi::ResourceBase::init (r=r@entry=0xa6c670) at /usr/src/debug/kdepimlibs-15.12.3/akonadi/src/agentbase/resourcebase.cpp:606 #49 0x0000000000482d87 in Akonadi::ResourceBase::init<DavGroupwareResource> (argc=3, argv=<optimized out>) at /usr/include/KF5/AkonadiAgentBase/resourcebase.h:196 #50 0x00007fef1ea585b0 in __libc_start_main () from /lib64/libc.so.6 #51 0x000000000043bc39 in _start () at ../sysdeps/x86_64/start.S:118 Reproducible: Always
I can confirm the existence of the bug. Steps to reproduce: 1. Open KMail. 2. Try to add the new mail identity. 3. Fill the required fields. 4. Save identity. 5. Observe how akonadi_davgroupware crashes
Created attachment 98492 [details] stacktrace
Can confirm this. openSUSE Tumbleweed, KDE from Factory repository Applications 16.04 Frameworks 5.22
Created attachment 99035 [details] crash dump
Created attachment 100094 [details] new crash dump with frameworks 5.24 and apps 16.04.3
Created attachment 100804 [details] developer info
Some problem here: cat /etc/os-release NAME=openSUSE VERSION="Tumbleweed" VERSION_ID="20160822" kontact --version kontact 5.2.3
Created attachment 102203 [details] debug info I can confirm this Bug (see attached debug infos). openSUSE Tumbleweed Applications 16.08.3-13.1 Frameworks 5.28.0-120.1
Same here on Arch Linux with kdepim-runtime/kde-applications-meta 16.12-1
Created attachment 103245 [details] akonadi_davgroupware_resource 16.12.0-1 crashlog with debug symbols
Still happening with KDE Applications 16.12.1. Current chrashlog (with debug symbols) is here: https://dl.dropboxusercontent.com/u/48919449/akonadi_davgroupware_resource-crashlog-dbg-20170114.log
Same thing happening on ubuntu 17.04 with KDE installed. kontact --version = 5.2.3 akonadictl --version = 5.2.2 kmail --version = 5.2.3 plasmashell --version = 5.8.5
*** This bug has been confirmed by popular vote. ***
I'm on Fedora 25 with: plasma: 5.9.3 Framework: 5.33.0 Qt: 5.7.1 kdepim: 16.12.2 akonadi: 1.13.0 kf5-akonadi-calendar: 16.12.3 akonadi_davgroupware_resource crashes everytime I add google's DAV calendar using the still working old DAV endpoints which require "application password". The DAV resource URL I'm using is: https://www.google.com/calendar/dav/STRING@gmail.com Stack trace: Application: akonadi_davgroupware_resource (akonadi_davgroupware_resource), signal: Segmentation fault Using host libthread_db library "/lib64/libthread_db.so.1". [Current thread is 1 (Thread 0x7fcbb8cc6940 (LWP 29557))] Thread 5 (Thread 0x7fcba4a97700 (LWP 29562)): #0 0x00007fcbd177029a in timerSourceCheckHelper(GTimerSource*) () at /lib64/libQt5Core.so.5 #1 0x00007fcbc84fbbc9 in g_main_context_check () at /lib64/libglib-2.0.so.0 #2 0x00007fcbc84fc104 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #3 0x00007fcbc84fc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0 #4 0x00007fcbd17706eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #5 0x00007fcbd172168a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #6 0x00007fcbd157e5e3 in QThread::exec() () at /lib64/libQt5Core.so.5 #7 0x00007fcbd15829ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5 #8 0x00007fcbd06576ca in start_thread () at /lib64/libpthread.so.0 #9 0x00007fcbd0975f7f in clone () at /lib64/libc.so.6 Thread 4 (Thread 0x7fcba5298700 (LWP 29560)): #0 0x00007fcbd096a01d in poll () at /lib64/libc.so.6 #1 0x00007fcbc84fc166 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #2 0x00007fcbc84fc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0 #3 0x00007fcbd17706eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #4 0x00007fcbd172168a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #5 0x00007fcbd157e5e3 in QThread::exec() () at /lib64/libQt5Core.so.5 #6 0x00007fcbd15829ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5 #7 0x00007fcbd06576ca in start_thread () at /lib64/libpthread.so.0 #8 0x00007fcbd0975f7f in clone () at /lib64/libc.so.6 Thread 3 (Thread 0x7fcba5a99700 (LWP 29559)): #0 0x00007fcbd096a01d in poll () at /lib64/libc.so.6 #1 0x00007fcbc84fc166 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #2 0x00007fcbc84fc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0 #3 0x00007fcbd17706eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #4 0x00007fcbd172168a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #5 0x00007fcbd157e5e3 in QThread::exec() () at /lib64/libQt5Core.so.5 #6 0x00007fcbd8979739 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5 #7 0x00007fcbd15829ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5 #8 0x00007fcbd06576ca in start_thread () at /lib64/libpthread.so.0 #9 0x00007fcbd0975f7f in clone () at /lib64/libc.so.6 Thread 2 (Thread 0x7fcbae925700 (LWP 29558)): #0 0x00007fcbd096a01d in poll () at /lib64/libc.so.6 #1 0x00007fcbcc0f0d10 in _xcb_conn_wait () at /lib64/libxcb.so.1 #2 0x00007fcbcc0f2aa9 in xcb_wait_for_event () at /lib64/libxcb.so.1 #3 0x00007fcbb2108d69 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5 #4 0x00007fcbd15829ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5 #5 0x00007fcbd06576ca in start_thread () at /lib64/libpthread.so.0 #6 0x00007fcbd0975f7f in clone () at /lib64/libc.so.6 Thread 1 (Thread 0x7fcbb8cc6940 (LWP 29557)): [KCrash Handler] #6 0x000055f76db5ef4b in EtagCache::setEtag(QString const&, QString const&) () #7 0x000055f76db7dd8f in DavGroupwareResource::onItemFetched(KJob*, DavGroupwareResource::ItemFetchUpdateType) () #8 0x00007fcbd1749a56 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5 #9 0x00007fcbd2f1c682 in KJob::result(KJob*, KJob::QPrivateSignal) () at /lib64/libKF5CoreAddons.so.5 #10 0x00007fcbd2f1dfc1 in KJob::finishJob(bool) () at /lib64/libKF5CoreAddons.so.5 #11 0x000055f76db41c6d in DavItemFetchJob::davJobFinished(KJob*) () #12 0x00007fcbd1749a56 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5 #13 0x00007fcbd2f1c682 in KJob::result(KJob*, KJob::QPrivateSignal) () at /lib64/libKF5CoreAddons.so.5 #14 0x00007fcbd2f1dfc1 in KJob::finishJob(bool) () at /lib64/libKF5CoreAddons.so.5 #15 0x00007fcbd57ed442 in KIO::SimpleJob::slotFinished() () at /lib64/libKF5KIOCore.so.5 #16 0x00007fcbd57f7d26 in KIO::TransferJob::slotFinished() () at /lib64/libKF5KIOCore.so.5 #17 0x00007fcbd57f7491 in KIO::TransferJob::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libKF5KIOCore.so.5 #18 0x00007fcbd1749721 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5 #19 0x00007fcbd57c71a1 in KIO::SlaveInterface::dispatch(int, QByteArray const&) () at /lib64/libKF5KIOCore.so.5 #20 0x00007fcbd57c57e7 in KIO::SlaveInterface::dispatch() () at /lib64/libKF5KIOCore.so.5 #21 0x00007fcbd57ca851 in KIO::Slave::gotInput() () at /lib64/libKF5KIOCore.so.5 #22 0x00007fcbd5856595 in KIO::Slave::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libKF5KIOCore.so.5 #23 0x00007fcbd1749721 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5 #24 0x00007fcbd5766e9f in KIO::ConnectionPrivate::dequeue() [clone .part.8] () at /lib64/libKF5KIOCore.so.5 #25 0x00007fcbd174a7e9 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5 #26 0x00007fcbd2630ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5 #27 0x00007fcbd2638671 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5 #28 0x00007fcbd17226fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5 #29 0x00007fcbd1724de0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5 #30 0x00007fcbd1770653 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5 #31 0x00007fcbc84fbe52 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0 #32 0x00007fcbc84fc1d0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #33 0x00007fcbc84fc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0 #34 0x00007fcbd17706cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #35 0x00007fcbd172168a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5 #36 0x00007fcbd172918c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5 #37 0x00007fcbd7fc002e in Akonadi::ResourceBase::init(Akonadi::ResourceBase*) () at /lib64/libKF5AkonadiAgentBase.so.5 #38 0x000055f76db89e47 in int Akonadi::ResourceBase::init<DavGroupwareResource>(int, char**) () #39 0x00007fcbd088e401 in __libc_start_main () at /lib64/libc.so.6 #40 0x000055f76db33d3a in _start ()
Still happening to me on up-to-date openSUSE Tumbleweed (KF5 5.38.0, KDE 17.08.1). There is a proposed patch attached to https://bugs.archlinux.org/task/53943 but I haven't been able to test that.
*** Bug 379538 has been marked as a duplicate of this bug. ***
Git commit a86b0808c1d6553419aa78b7e104d820991c7080 by Daniel Vrátil. Committed on 29/09/2017 at 11:58. Pushed by dvratil into branch 'Applications/17.08'. DAV: fix crash if Collection disappears during Item fetch FIXED-IN: 5.6.2 M +16 -0 resources/dav/resource/davgroupwareresource.cpp https://commits.kde.org/kdepim-runtime/a86b0808c1d6553419aa78b7e104d820991c7080
Bug 362420 is probably a duplicate of this, too.
*** Bug 362420 has been marked as a duplicate of this bug. ***