https://bugs.kde.org/show_bug.cgi?id=387829
Bug ID: 387829
Summary: Discover segfaults on launch with current git master;
introduced with
da846ebf85f3cfcdd30df5a977e6a2b7e1320d28
Product: Discover
Version: 5.11.4
Platform: Neon Packages
OS: Linux
Status: UNCONFIRMED
Severity: critical
Priority: NOR
Component: discover
Assignee: aleix...@kde.org
Reporter: pointedst...@zoho.com
Target Milestone: ---
Discover compiled from current git master (HEAD at
7202c8ed8dab3003f6e2804aea823f91ac766181) segfaults on launch.
The issue appears to have been introduced with commit
da846ebf85f3cfcdd30df5a977e6a2b7e1320d28. Everything after that commit
segfaults for me; everything before it works fine. Here is the backtrace:
$ gdb plasma-discover
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
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Reading symbols from plasma-discover...(no debugging symbols found)...done.
(gdb) start
Temporary breakpoint 1 at 0x415175
Starting program: /usr/local/bin/plasma-discover
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Temporary breakpoint 1, 0x0000000000415175 in main ()
(gdb) bt
#0 0x0000000000415175 in main ()
(gdb) c
Continuing.
[New Thread 0x7fffe571c700 (LWP 5076)]
[New Thread 0x7fffdcbda700 (LWP 5077)]
[New Thread 0x7fffd75ef700 (LWP 5078)]
[New Thread 0x7fffc8f18700 (LWP 5079)]
[New Thread 0x7fffbe9eb700 (LWP 5080)]
Thread 1 "plasma-discover" received signal SIGSEGV, Segmentation fault.
0x00007ffff3d6c0f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
(gdb) bt
#0 0x00007ffff3d6c0f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1 0x00007ffff3d7336c in QRegExp::operator=(QRegExp const&) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007ffff3d734dd in QRegExp::QRegExp(QRegExp const&) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007ffff3df372d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007ffff3df4907 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007ffff3df59a4 in QDirIterator::next() ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fffbd954a7d in ?? ()
from /usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#7 0x00007ffff6be2985 in DiscoverBackendsFactory::backendForFile(QString
const&, QString const&) const ()
from /usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#8 0x00007ffff6be26d4 in DiscoverBackendsFactory::backend(QString const&)
const () from
/usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#9 0x00007ffff6be2f83 in DiscoverBackendsFactory::allBackends()
const::{lambda(QString const&)#1}::operator()(QString const&) const ()
from /usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#10 0x00007ffff6be3630 in QVector<AbstractResourcesBackend*>
kTransform<QVector<AbstractResourcesBackend*>, QStringList,
DiscoverBackendsFactory::allBackends() const::{lambda(QString
const&)#1}>(QStringList const&, DiscoverBackendsFactory::allBackends()
const::{lambda(QString const&)#1}) ()
from /usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#11 0x00007ffff6be2fee in DiscoverBackendsFactory::allBackends() const ()
from /usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#12 0x00007ffff6bc1fce in ResourcesModel::registerAllBackends() ()
from /usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#13 0x00007ffff6bf6d7b in ResourcesModel::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) ()
from /usr/local/lib/x86_64-linux-gnu/plasma-discover/libDiscoverCommon.so
#14 0x00007ffff3f09e49 in QObject::event(QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff54eeb7c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007ffff54f6587 in QApplication::notify(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007ffff3edc988 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
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