https://bugs.kde.org/show_bug.cgi?id=425811
Bug ID: 425811
Summary: Crash when clicking update button the moment it
becomes enabled
Product: Discover
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: KNewStuff Backend
Assignee: lei...@leinir.dk
Reporter: n...@kde.org
CC: aleix...@kde.org
Target Milestone: ---
I've got a 100% reproducible crasher with Discover. If I click the "Update"
button on the updates page *the very moment* it becomes enabled after the page
loads, Discover crashes with the following backtrace:
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007ffff51bd539 in __GI_abort () at abort.c:79
#2 0x00007ffff5217827 in __libc_message
(action=action@entry=do_abort, fmt=fmt@entry=0x7ffff5326e29 "%s\n")
at ../sysdeps/posix/libc_fatal.c:155
#3 0x00007ffff521eb2c in malloc_printerr
(str=str@entry=0x7ffff5329240 "double free or corruption (!prev)")
at malloc.c:5347
#4 0x00007ffff522017c in _int_free
(av=0x7fffa0000020, p=0x7fffa0009fa0, have_lock=<optimized out>)
at malloc.c:4317
#5 0x00007fffe026e1a8 in KPackageTask::run()::{lambda()#1}::operator()() const
(__closure=0x7fffa0009110)
at
/home/nate/kde/build/knewstuff/src/core/KF5NewStuffCore_autogen/include/kpackagejob.moc:152
#6 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void,
KPackageTask::run()::{lambda()#1}>::call({lambda()#1}&, void**)
(arg=<optimized out>, f=...)
at /usr/include/qt5/QtCore/qobjectdefs_impl.h:146
#7 QtPrivate::Functor<KPackageTask::run()::{lambda()#1},
0>::call<QtPrivate::List<>, void>({lambda()#1}&, void*, {lambda()#1}&*)
(arg=<optimized out>, f=...)
at /usr/include/qt5/QtCore/qobjectdefs_impl.h:256
#8 QtPrivate::QFunctorSlotObject<KPackageTask::run()::{lambda()#1}, 0,
QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*,
void**, bool*)
(which=<optimized out>, this_=0x7fffa0009100, r=<optimized out>,
a=<optimized out>, ret=<optimized out>) at
/usr/include/qt5/QtCore/qobjectdefs_impl.h:443
#9 0x00007ffff597fb41 in QObject::event(QEvent*)
(this=0x53e7750, e=0x7fffa0008530) at kernel/qobject.cpp:1314
#10 0x00007ffff6b330cf in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x53e7750, e=0x7fffa0008530)
at kernel/qapplication.cpp:3671
#11 0x00007ffff5953c1a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x53e7750, event=0x7fffa0008530)
at
../../include/QtCore/5.15.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#12 0x00007ffff5956641 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (receiver=0x0, event_type=0, data=0x477280)
at kernel/qcoreapplication.cpp:1815
#13 0x00007ffff59ab9d3 in postEventSourceDispatch(GSource*, GSourceFunc,
gpoint--Type <RET> for more, q to quit, c to continue without paging--
er) (s=s@entry=0x579e10) at kernel/qeventdispatcher_glib.cpp:277
#14 0x00007ffff3fb82b7 in g_main_dispatch (context=0x7fffec005000)
at ../glib/gmain.c:3309
#15 g_main_context_dispatch (context=0x7fffec005000) at ../glib/gmain.c:3974
#16 0x00007ffff3fb8638 in g_main_context_iterate
(context=context@entry=0x7fffec005000, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4047
#17 0x00007ffff3fb86ef in g_main_context_iteration
(context=0x7fffec005000, may_block=may_block@entry=1)
at ../glib/gmain.c:4108
#18 0x00007ffff59ab05f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x56c300, flags=...)
at kernel/qeventdispatcher_glib.cpp:423
#19 0x00007ffff59525db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fffffffcdd0, flags=..., flags@entry=...)
at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#20 0x00007ffff595a840 in QCoreApplication::exec() ()
at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#21 0x00007ffff5d87a8c in QGuiApplication::exec() ()
at kernel/qguiapplication.cpp:1867
#22 0x00007ffff6b33045 in QApplication::exec() ()
at kernel/qapplication.cpp:2811
#23 0x0000000000415e79 in main(int, char**)
(argc=<optimized out>, argv=<optimized out>)
at /home/nate/kde/src/discover/discover/main.cpp:183
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