Crash during project pruning

Kevin Funk kfunk at kde.org
Fri Apr 8 13:06:34 UTC 2016 

On Friday, April 8, 2016 2:48:49 PM CEST Maciej Cencora wrote:
> In the mean time, here is another crash related to cmake configuration:
> 
> #0  KDevelop::Path::Path (this=0x7fffffffb350, other=..., child=...) at
> ../util/path.cpp:130
> #1  0x00007ffff2280cc3 in KDevelop::ProjectBaseItem::path
> (this=this at entry=0x17ccaa0)
> at ../project/projectmodel.cpp:451
> #2  0x00007ffff22a1ab0 in KDevelop::FileManagerListJob::startNextJob
> (this=0x263add0) at ../project/filemanagerlistjob.cpp:87
> #3  0x00007ffff5861e81 in QObject::event(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #4  0x00007ffff612505c in QApplicationPrivate::notify_helper(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #5  0x00007ffff612a516 in QApplication::notify(QObject*, QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #6  0x00007ffff58325cb in QCoreApplication::notifyInternal(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #7  0x00007ffff58349c6 in
> QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
> from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #8  0x00007ffff5888653 in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #9  0x00007fffeda85137 in g_main_context_dispatch () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #10 0x00007fffeda85390 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #11 0x00007fffeda8543c in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #12 0x00007ffff5888a5f in
> QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
> () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #13 0x00007ffff582fd8a in
> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #14 0x00007ffff631fc4d in QDialog::exec() () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #15 0x00007ffff7ad8104 in KDevelop::ProjectControllerPrivate::projectConfig
> (this=<optimized out>, obj=<optimized out>) at
> ../shell/projectcontroller.cpp:157
> #16 0x00007ffff5860e2f in QMetaObject::activate(QObject*, int, int, void**)
> () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #17 0x00007ffff611b412 in QAction::triggered(bool) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #18 0x00007ffff611d898 in QAction::activate(QAction::ActionEvent) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #19 0x00007ffff629fdf2 in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #20 0x00007ffff62a608c in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #21 0x00007ffff62aa000 in QMenu::mouseReleaseEvent(QMouseEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #22 0x00007ffff6167f88 in QWidget::event(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #23 0x00007ffff62aaa53 in QMenu::event(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #24 0x00007ffff612505c in QApplicationPrivate::notify_helper(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #25 0x00007ffff612ac19 in QApplication::notify(QObject*, QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #26 0x00007ffff58325cb in QCoreApplication::notifyInternal(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #27 0x00007ffff6129b32 in QApplicationPrivate::sendMouseEvent(QWidget*,
> QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
> from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #28 0x00007ffff61828dd in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #29 0x00007ffff6184b3b in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #30 0x00007ffff612505c in QApplicationPrivate::notify_helper(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #31 0x00007ffff612a516 in QApplication::notify(QObject*, QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #32 0x00007ffff58325cb in QCoreApplication::notifyInternal(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #33 0x00007ffff5b74521 in
> QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::Mou
> seEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #34 0x00007ffff5b761e5 in
> QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePriva
> te::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #35 0x00007ffff5b59f38 in
> QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEve
> ntsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #36 0x00007fffdd1c1d90 in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
> #37 0x00007fffeda85137 in g_main_context_dispatch () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #38 0x00007fffeda85390 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #39 0x00007fffeda8543c in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #40 0x00007ffff5888a5f in
> QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
> () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #41 0x00007ffff582fd8a in
> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #42 0x00007ffff62a4de0 in QMenu::exec(QPoint const&, QAction*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #43 0x00007fffb14760c1 in ProjectTreeView::popupContextMenu
> (this=<optimized out>, pos=...) at
> ../plugins/projectmanagerview/projecttreeview.cpp:359
> #44 0x00007ffff5860e2f in QMetaObject::activate(QObject*, int, int, void**)
> () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #45 0x00007ffff614ebe5 in QWidget::customContextMenuRequested(QPoint
> const&) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #46 0x00007ffff616897e in QWidget::event(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #47 0x00007ffff6266b2e in QFrame::event(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #48 0x00007ffff638c5ab in QAbstractItemView::viewportEvent(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #49 0x00007ffff63cb0cc in QTreeView::viewportEvent(QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #50 0x00007ffff58323b2 in
> QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*)
> () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #51 0x00007ffff612503c in QApplicationPrivate::notify_helper(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #52 0x00007ffff612bea1 in QApplication::notify(QObject*, QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #53 0x00007ffff58325cb in QCoreApplication::notifyInternal(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #54 0x00007ffff61826b2 in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #55 0x00007ffff6184b3b in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #56 0x00007ffff612505c in QApplicationPrivate::notify_helper(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #57 0x00007ffff612a516 in QApplication::notify(QObject*, QEvent*) () from
> /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #58 0x00007ffff58325cb in QCoreApplication::notifyInternal(QObject*,
> QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #59 0x00007ffff5b74521 in
> QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::Mou
> seEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #60 0x00007ffff5b761e5 in
> QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePriva
> te::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #61 0x00007ffff5b59f38 in
> QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEve
> ntsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #62 0x00007fffdd1c1d90 in ?? () from
> /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
> #63 0x00007fffeda85137 in g_main_context_dispatch () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #64 0x00007fffeda85390 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #65 0x00007fffeda8543c in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #66 0x00007ffff5888a5f in
> QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
> () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #67 0x00007ffff582fd8a in
> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #68 0x00007ffff5837e2c in QCoreApplication::exec() () from
> /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #69 0x000000000040c837 in main (argc=<optimized out>, argv=<optimized out>)
> at ../app/main.cpp:680
> 
> (gdb) print other
> $2 = (const KDevelop::Path &) @0x38: <error reading variable>

Known crash (same backtrace, different trigger, though): 
  https://bugs.kde.org/show_bug.cgi?id=355241

Patches *very* welcome!

Could you have a look?

> This one is almost 100% reproducible.
> Open project settings -> cmake -> remove the only build dir -> add new
> build dir with same path as previous -> "Apply" -> cmake configuration is
> started and while it is still running, the crash occurs.
> For this one I haven't found the culprit yet.
> 
> Regards,
> Maciej
> 
> 2016-04-08 14:22 GMT+02:00 Maciej Cencora <m.cencora at gmail.com>:
> > @Kevin:
> > I've send you a wrong backtrace privately.
> > 
> > It seems I don't have the original backtrace anymore. Will try to get it,
> > but most of the time it does not crash so it may take some time.
> > 
> > Regards,
> > Maciej
> > 
> > 2016-04-08 12:52 GMT+02:00 Kevin Funk <kfunk at kde.org>:
> >> On Friday, April 8, 2016 12:44:04 PM CEST Maciej Cencora wrote:
> >> > Hi,
> >> > 
> >> > I need directions on fixing a crash.
> >> > Project->Prune Selection action triggers removal of a whole build
> >> 
> >> directory.
> >> 
> >> > File notifier catches deletion of commands file and triggers
> >> > CMakeManager::dirtyFile -> reload -> createImportJob ->
> >> 
> >> IProject::configure.
> >> 
> >> > In the end cmake configure stage gets triggered while its build dir is
> >> > being removed. Depending on timing it may or may not trigger a crash.
> >> 
> >> ... and the backtrace is? :)
> >> 
> >> > Any ideas what would be the best way to fix this?
> >> > 
> >> > Regards,
> >> > Maciej
> >> 
> >> --
> >> Kevin Funk | kfunk at kde.org | http://kfunk.org


-- 
Kevin Funk | kfunk at kde.org | http://kfunk.org
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