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  1. Qt Creator
  2. QTCREATORBUG-21416

Crash when opening .pro file

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    • 5f79b5d2e5e33321cdcd00362f0d6d9442a73ec2 (qt-creator/qt-creator/4.8) 1f998e040eb7202691f4a4eb5fb77499247b2aab (qt/qtbase/5.12)

    Description

      I just caught an instance where apparently a QMakeEvaluator is deleted from thread 2 while it is parsing the project in thread 1. I don't have debug symbols, but the backtraces are still quite illuminating:

      Thread 1, this segfaults:

      #0  0x00007f29d66098e0 in QHash<QString, int>::findNode(QString const&, unsigned int) const () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#1  0x00007f29d6608b51 in QMakeVfs::idForFileName(QString const&, QFlags<QMakeVfs::VfsFlag>) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#2  0x00007f29d65f27fd in QMakeEvaluator::writeFile(QString const&, QString const&, QFlags<QIODevice::OpenModeFlag>, QFlags<QMakeVfs::VfsFlag>, QString const&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#3  0x00007f29d65f5bef in QMakeEvaluator::evaluateBuiltinConditional(int, ProKey const&, ProStringList const&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#4  0x00007f29d65ea94b in QMakeEvaluator::evaluateConditionalFunction(ProKey const&, unsigned short const*&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#5  0x00007f29d65e6554 in QMakeEvaluator::visitProBlock(unsigned short const*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#6  0x00007f29d65e6534 in QMakeEvaluator::visitProBlock(unsigned short const*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#7  0x00007f29d65e977c in QMakeEvaluator::evaluateFunction(ProFunctionDef const&, QList<ProStringList> const&, ProStringList*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#8  0x00007f29d65e99e0 in QMakeEvaluator::evaluateBoolFunction(ProFunctionDef const&, QList<ProStringList> const&, ProString const&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#9  0x00007f29d65ea8ba in QMakeEvaluator::evaluateConditionalFunction(ProKey const&, unsigned short const*&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#10 0x00007f29d65e6554 in QMakeEvaluator::visitProBlock(unsigned short const*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#11 0x00007f29d65e977c in QMakeEvaluator::evaluateFunction(ProFunctionDef const&, QList<ProStringList> const&, ProStringList*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#12 0x00007f29d65e99e0 in QMakeEvaluator::evaluateBoolFunction(ProFunctionDef const&, QList<ProStringList> const&, ProString const&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#13 0x00007f29d65ea8ba in QMakeEvaluator::evaluateConditionalFunction(ProKey const&, unsigned short const*&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#14 0x00007f29d65e6554 in QMakeEvaluator::visitProBlock(unsigned short const*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#15 0x00007f29d65e6ae1 in QMakeEvaluator::visitProFile(ProFile*, QMakeHandler::EvalFileType, QFlags<QMakeEvaluator::LoadFlag>) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#16 0x00007f29d65e7443 in QMakeEvaluator::evaluateFile(QString const&, QMakeHandler::EvalFileType, QFlags<QMakeEvaluator::LoadFlag>) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#17 0x00007f29d65e7f5f in QMakeEvaluator::evaluateFeatureFile(QString const&, bool) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#18 0x00007f29d65e83a9 in QMakeEvaluator::evaluateConfigFeatures() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#19 0x00007f29d65e6bcb in QMakeEvaluator::visitProFile(ProFile*, QMakeHandler::EvalFileType, QFlags<QMakeEvaluator::LoadFlag>) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#20 0x00007f29d65eeb08 in ProFileEvaluator::accept(ProFile*, QFlags<QMakeEvaluator::LoadFlag>) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#21 0x00007f29c7429db4 in evaluateOne(QmakeProjectManager::Internal::QmakeEvalInput const&, ProFile*, QtSupport::ProFileReader*, bool, QtSupport::ProFileReader**) [clone .constprop.172] ()
   from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#22 0x00007f29c742f1d7 in QmakeProjectManager::QmakeProFile::evaluate(QmakeProjectManager::Internal::QmakeEvalInput const&) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#23 0x00007f29c7432373 in QmakeProjectManager::QmakeProFile::asyncEvaluate(QFutureInterface<QmakeProjectManager::Internal::QmakeEvalResult*>&, QmakeProjectManager::Internal::QmakeEvalInput) ()
   from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#24 0x00007f29c743c3ba in void Utils::Internal::runAsyncMemberDispatch<QmakeProjectManager::Internal::QmakeEvalResult*, Utils::Internal::MemberCallable<void (QmakeProjectManager::QmakeProFile::*)(QFutureInterface<QmakeProjectManager::Internal::QmakeEvalResult*>&, QmakeProjectManager::Internal::QmakeEvalInput)>, QmakeProjectManager::Internal::QmakeEvalInput, void>(QFutureInterface<QmakeProjectManager::Internal::QmakeEvalResult*>, Utils::Internal::MemberCallable<void (QmakeProjectManager::QmakeProFile::*)(QFutureInterface<QmakeProjectManager::Internal::QmakeEvalResult*>&, QmakeProjectManager::Internal::QmakeEvalInput)>&&, QmakeProjectManager::Internal::QmakeEvalInput&&) ()
   from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#25 0x00007f29c743c533 in Utils::Internal::AsyncJob<QmakeProjectManager::Internal::QmakeEvalResult*, void (QmakeProjectManager::QmakeProFile::*)(QFutureInterface<QmakeProjectManager::Internal::QmakeEvalResult*>&, QmakeProjectManager::Internal::QmakeEvalInput), QmakeProjectManager::QmakeProFile*, QmakeProjectManager::Internal::QmakeEvalInput&>::run() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#26 0x00007f29ed00ce3f in QThreadPoolThread::run() () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#27 0x00007f29ed016564 in QThreadPrivate::start(void*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#28 0x00007f29ecae0494 in start_thread (arg=0x7f2995098700) at pthread_create.c:333
#29 0x00007f29ebf85acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

      Thread 2, incidentally deleting a QMakeEvaluator at the same time:

      #0  _int_free (av=0x7f296c000020, p=0x7f296c094fa0, have_lock=0) at malloc.c:3962
#1  0x00007f29ed064314 in QHashData::free_helper(void (*)(QHashData::Node*)) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#2  0x00007f29d65e03d6 in QLinkedList<QHash<ProKey, ProStringList> >::freeData(QLinkedListData*) [clone .isra.31] () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#3  0x00007f29d65e11bb in QMakeEvaluator::~QMakeEvaluator() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#4  0x00007f29d65ee511 in ProFileEvaluator::~ProFileEvaluator() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#5  0x00007f29d6648b29 in QtSupport::ProFileReader::~ProFileReader() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#6  0x00007f29d6648c99 in QtSupport::ProFileReader::~ProFileReader() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQtSupport.so
#7  0x00007f29c7447e29 in QmakeProjectManager::QmakeProject::destroyProFileReader(QtSupport::ProFileReader*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#8  0x00007f29c7426aae in QmakeProjectManager::QmakeProFile::cleanupProFileReaders() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#9  0x00007f29c7433600 in QmakeProjectManager::QmakeProFile::applyEvaluate(QmakeProjectManager::Internal::QmakeEvalResult*) () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#10 0x00007f29c7433a20 in QmakeProjectManager::QmakeProFile::applyAsyncEvaluate() () from /home/ulf/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmakeProjectManager.so
#11 0x00007f29ed1f94b6 in QMetaObject::activate(QObject*, int, int, void**) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#12 0x00007f29ed013ae1 in QFutureWatcherBase::event(QEvent*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#13 0x00007f29ee5b9e2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Widgets.so.5
#14 0x00007f29ee5c0f60 in QApplication::notify(QObject*, QEvent*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Widgets.so.5
#15 0x00007f29ed1ce2d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#16 0x00007f29ed1d0ceb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#17 0x00007f29ed222d93 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#18 0x00007f29e8d8a7f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f29e8d8aa60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f29e8d8ab0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f29ed2223ff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#22 0x00007f29e5ba30d1 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/ulf/Qt/Tools/QtCreator/lib/Qt/plugins/platforms/../../lib/libQt5XcbQpa.so.5
#23 0x00007f29ed1ccc3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#24 0x00007f29ed1d5640 in QCoreApplication::exec() () from /home/ulf/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5
#25 0x00000000004099f4 in main ()

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          Bug - A problem which impairs or prevents the functions of the product. QTCREATORBUG-21586 Crash on launch

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              allan.jensen Allan Sandfeld Jensen
              ulherman Ulf Hermann
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