There is an open merge request for messagelib: https://invent.kde.org/pim/messagelib/-/merge_requests/100 which I would love to have fixed.
I am hitting this crash nearly daily. If you cannot reproduce this I can give you my pubring.kbx which is large enough to make this issue easily reproducible even on very fast computers.
@dvratil I am assigning this directly to you even though that is not the usual workflow.
Absolutely, I'll prioritize looking at this.
I think I can easilly generate a large-enough keyring locally :-)
Hi Dan,
the crash is back, both ingo and me are experiencing it on 23.08 with opensuse tumbleweed. Since reporting it with drkonqi somehow did not work for me here is a backtrace from a decrypt then switch, but I can very reliably reproduce this:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#4 0x00007f7ca116c22d in __strlen_avx2 () at /lib64/libc.so.6
#5 0x00007f7c10f0e60b in QString::fromLocal8Bit(char const*, int) (size=-1, str=0x74656e2e786d <error: Cannot access memory at address 0x74656e2e786d>) at /usr/include/qt5/QtCore/qstring.h:708
#6 MimeTreeParser::EncryptedMessagePart::okDecryptMIME(KMime::Content&) (this=this@entry=0x561d41b76b30, data=...) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/messagepart.cpp:1229
#7 0x00007f7c10f0edf3 in MimeTreeParser::EncryptedMessagePart::startDecryption(KMime::Content*) (this=0x561d41b76b30, data=0x561d476b7390) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/messagepart.cpp:1285
#8 0x00007f7c10ef0feb in MimeTreeParser::MultiPartEncryptedBodyPartFormatter::process(MimeTreeParser::Interface::BodyPart&) const (this=<optimized out>, part=...) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/bodyformatter/multipartencrypted.cpp:80
#9 0x00007f7c10f039ae in MimeTreeParser::ObjectTreeParser::processType(KMime::Content*, MimeTreeParser::ProcessResult&, QByteArray const&) (this=this@entry=0x7fff2ae9c490, node=node@entry=0x561d405b9ff0, processResult=..., mimeType=...) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/objecttreeparser.cpp:146
#10 0x00007f7c10f03d5e in MimeTreeParser::ObjectTreeParser::parseObjectTreeInternal(KMime::Content*, bool) (this=this@entry=0x7fff2ae9c490, node=<optimized out>, onlyOneMimePart=<optimized out>) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/objecttreeparser.cpp:213
#11 0x00007f7c10f03f8b in MimeTreeParser::ObjectTreeParser::parseObjectTree(KMime::Content*, bool) (this=0x7fff2ae9c490, node=<optimized out>, parseOnlySingleNode=<optimized out>) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/objecttreeparser.cpp:116
#12 0x00007f7c11040c08 in MessageViewer::ViewerPrivate::parseContent(KMime::Content*) (this=0x561d401fc680, content=0x561d405b9ff0) at /usr/src/debug/messagelib-23.08.0/messageviewer/src/viewer/viewer_p.cpp:856
#13 0x00007f7c1104cf11 in MessageViewer::ViewerPrivate::displayMessage() (this=0x561d401fc680) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:307
#14 MessageViewer::ViewerPrivate::updateReaderWin() (this=0x561d401fc680) at /usr/src/debug/messagelib-23.08.0/messageviewer/src/viewer/viewer_p.cpp:2138
#15 0x00007f7ca1b25812 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff2ae9c6e0, r=0x561d401fc680, this=0x561d40b05390) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#16 doActivate<false>(QObject*, int, void**) (sender=0x561d408b1540, signal_index=3, argv=0x7fff2ae9c6e0) at kernel/qobject.cpp:3925
#17 0x00007f7ca1b1e47f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f7c10f1d900 <MimeTreeParser::NodeHelper::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff2ae9c6e0) at kernel/qobject.cpp:3985
#18 0x00007f7c10ee8a8e in MimeTreeParser::NodeHelper::update(MimeTreeParser::UpdateMode) (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/messagelib-23.08.0/build/mimetreeparser/src/KPim5MimeTreeParser_autogen/EWIEGA46WW/moc_nodehelper.cpp:133
#19 0x00007f7ca1b25812 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff2ae9c7f0, r=0x561d408b1540, this=0x561d47b4dc50) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#20 doActivate<false>(QObject*, int, void**) (sender=0x561d47b4cd20, signal_index=3, argv=0x7fff2ae9c7f0) at kernel/qobject.cpp:3925
#21 0x00007f7ca1b1e47f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x561d47b4cd20, m=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff2ae9c7f0) at kernel/qobject.cpp:3985
#22 0x00007f7c10f0b205 in MimeTreeParser::CryptoBodyPartMemento::update(MimeTreeParser::UpdateMode) (_t1=<optimized out>, this=0x561d47b4cd20) at /usr/src/debug/messagelib-23.08.0/build/mimetreeparser/src/KPim5MimeTreeParser_autogen/YHS7SJUNTZ/moc_cryptobodypartmemento.cpp:144
#23 MimeTreeParser::CryptoBodyPartMemento::notify() (this=0x561d47b4cd20) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/memento/cryptobodypartmemento.h:48
#24 MimeTreeParser::DecryptVerifyBodyPartMemento::slotResult(GpgME::DecryptionResult const&, GpgME::VerificationResult const&, QByteArray const&) (this=0x561d47b4cd20, dr=<optimized out>, vr=<optimized out>, plainText=<optimized out>) at /usr/src/debug/messagelib-23.08.0/mimetreeparser/src/memento/decryptverifybodypartmemento.cpp:67
#25 0x00007f7ca1b25812 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff2ae9c8f0, r=0x561d47b4cd20, this=0x561d47b328e0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#26 doActivate<false>(QObject*, int, void**) (sender=0x7f7bf407b5f0, signal_index=7, argv=0x7fff2ae9c8f0) at kernel/qobject.cpp:3925
#27 0x00007f7ca1b1e47f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f7c116f3a60 <QGpgME::DecryptVerifyJob::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff2ae9c8f0) at kernel/qobject.cpp:3985
#28 0x00007f7c116582a6 in QGpgME::DecryptVerifyJob::result(GpgME::DecryptionResult const&, GpgME::VerificationResult const&, QByteArray const&, QString const&, GpgME::Error const&) (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>, _t3=<optimized out>, _t4=<optimized out>, _t5=<optimized out>) at /usr/src/debug/gpgme-1.22.0/lang/qt/src/decryptverifyjob.moc:149
#29 0x00007f7c116713f9 in QGpgME::_detail::ThreadedJobMixin<QGpgME::DecryptVerifyJob, std::tuple<GpgME::DecryptionResult, GpgME::VerificationResult, QByteArray, QString, GpgME::Error> >::doEmitResult<GpgME::DecryptionResult, GpgME::VerificationResult, QByteArray, QString, GpgME::Error>(std::tuple<GpgME::DecryptionResult, GpgME::VerificationResult, QByteArray, QString, GpgME::Error> const&) (tuple=std::tuple containing = {...}, this=0x7f7bf407b5f0) at /usr/include/c++/13/tuple:237
#30 QGpgME::_detail::ThreadedJobMixin<QGpgME::DecryptVerifyJob, std::tuple<GpgME::DecryptionResult, GpgME::VerificationResult, QByteArray, QString, GpgME::Error> >::slotFinished() (this=0x7f7bf407b5f0) at /usr/src/debug/gpgme-1.22.0/lang/qt/src/threadedjobmixin.h:239
#31 0x00007f7ca1b19320 in QObject::event(QEvent*) (this=0x7f7bf407b5f0, e=0x7f7b90001490) at kernel/qobject.cpp:1347
#32 0x00007f7ca27a519e in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x7f7bf407b5f0, e=0x7f7b90001490) at kernel/qapplication.cpp:3640
#33 0x00007f7ca1aed568 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x7f7bf407b5f0, event=0x7f7b90001490) at kernel/qcoreapplication.cpp:1064
#34 0x00007f7ca1aed72e in QCoreApplication::sendEvent(QObject*, QEvent*) (receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1462
#35 0x00007f7ca1af0b61 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x561d40135cd0) at kernel/qcoreapplication.cpp:1821
#36 0x00007f7ca1af10a8 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=<optimized out>, event_type=<optimized out>) at kernel/qcoreapplication.cpp:1680
#37 0x00007f7ca1b46c93 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x561d401659c0) at kernel/qeventdispatcher_glib.cpp:277
#38 0x00007f7c983169d8 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#39 0x00007f7c98316de8 in () at /lib64/libglib-2.0.so.0
#40 0x00007f7c98316e7c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#41 0x00007f7ca1b464a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x561d40104500, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#42 0x00007f7ca1aebffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff2ae9cdf0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#43 0x00007f7ca1af4490 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#44 0x0000561d3f063fd3 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kontact-23.08.0/src/main.cpp:216
[Inferior 1 (process 17097) detached]