Red Hat Bugzilla – Bug 445144
google search segfaults
Last modified: 2008-05-13 11:31:45 EDT
Description of problem: Any use of google search gives: [KCrash handler] #5 0x0000003a7e4f78a1 in qt_qFindChild_helper () from /usr/lib64/libQtCore.so.4 #6 0x0000003a8022d0fc in KParts::BrowserExtension::childObject () from /usr/lib64/libkparts.so.4 #7 0x00007f5f8a0d48de in ?? () from /usr/lib64/kde4/searchbarplugin.so #8 0x00007f5f8a0d8134 in ?? () from /usr/lib64/kde4/searchbarplugin.so #9 0x0000003a7e4fc396 in QMetaObject::activate () from /usr/lib64/libQtCore.so.4 #10 0x0000003a7f83b235 in QComboBox::activated () from /usr/lib64/libQtGui.so.4 #11 0x0000003a85e83913 in KHistoryComboBox::slotSimulateActivated () from /usr/lib64/libkdeui.so.5 #12 0x0000003a85e852d5 in KHistoryComboBox::qt_metacall () from /usr/lib64/libkdeui.so.5 #13 0x00007f5f8a0d424d in ?? () from /usr/lib64/kde4/searchbarplugin.so #14 0x0000003a7e4fc396 in QMetaObject::activate () from /usr/lib64/libQtCore.so.4 #15 0x0000003a85e72d15 in KComboBox::returnPressed () from /usr/lib64/libkdeui.so.5 #16 0x0000003a85e73ea4 in KComboBox::qt_metacall () from /usr/lib64/libkdeui.so.5 #17 0x0000003a85e85195 in KHistoryComboBox::qt_metacall () from /usr/lib64/libkdeui.so.5 #18 0x00007f5f8a0d424d in ?? () from /usr/lib64/kde4/searchbarplugin.so #19 0x0000003a7e4fc396 in QMetaObject::activate () from /usr/lib64/libQtCore.so.4 #20 0x0000003a85e8aff5 in KLineEdit::returnPressed () from /usr/lib64/libkdeui.so.5 #21 0x0000003a85e92a25 in KLineEdit::event () from /usr/lib64/libkdeui.so.5 #22 0x0000003a7f840311 in QComboBox::keyPressEvent () from /usr/lib64/libQtGui.so.4 #23 0x0000003a85e84f14 in KHistoryComboBox::keyPressEvent () from /usr/lib64/libkdeui.so.5 #24 0x0000003a7f5d3e5a in QWidget::event () from /usr/lib64/libQtGui.so.4 #25 0x0000003a7f590df1 in QApplicationPrivate::notify_helper () from /usr/lib64/libQtGui.so.4 #26 0x0000003a7f5984dc in QApplication::notify () from /usr/lib64/libQtGui.so.4 #27 0x0000003a85de323b in KApplication::notify () from /usr/lib64/libkdeui.so.5 #28 0x0000003a7e4ea9f0 in QCoreApplication::notifyInternal () from /usr/lib64/libQtCore.so.4 #29 0x0000003a7f6033cd in ?? () from /usr/lib64/libQtGui.so.4 #30 0x0000003a7f6053c8 in ?? () from /usr/lib64/libQtGui.so.4 #31 0x0000003a7f5e2efb in QApplication::x11ProcessEvent () from /usr/lib64/libQtGui.so.4 #32 0x0000003a7f606bfc in ?? () from /usr/lib64/libQtGui.so.4 #33 0x0000003a7943749b in g_main_context_dispatch () from /lib64/libglib-2.0.so.0 #34 0x0000003a7943ac7d in ?? () from /lib64/libglib-2.0.so.0 #35 0x0000003a7943ae3b in g_main_context_iteration () from /lib64/libglib-2.0.so.0 #36 0x0000003a7e50a741 in QEventDispatcherGlib::processEvents () from /usr/lib64/libQtCore.so.4 #37 0x0000003a7f60647f in ?? () from /usr/lib64/libQtGui.so.4 #38 0x0000003a7e4e98a8 in QEventLoop::processEvents () from /usr/lib64/libQtCore.so.4 #39 0x0000003a7e4e9a85 in QEventLoop::exec () from /usr/lib64/libQtCore.so.4 #40 0x0000003a7e4ecbc7 in QCoreApplication::exec () from /usr/lib64/libQtCore.so.4 #41 0x0000003a81abc5d2 in kdemain () from /usr/lib64/libkdeinit4_konqueror.so #42 0x0000003a7641e32a in __libc_start_main () from /lib64/libc.so.6 #43 0x0000000000400809 in _start () #0 0x0000003a764a6220 in __nanosleep_nocancel () from /lib64/libc.so.6 Version-Release number of selected component (if applicable): konq-plugins-4.0.3-0.2.20080409svn.fc9.x86_64 How reproducible: 100% Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
confirmed, yuck.
I'll take care of this. (I promised Sebastian I'd help with fixing the bugs in the code.) Unfortunately, there is no debugging information in this backtrace. Can you please install konq-plugins-debuginfo and post or attach the resulting backtrace? I really need to know where: #7 0x00007f5f8a0d48de in ?? () from /usr/lib64/kde4/searchbarplugin.so #8 0x00007f5f8a0d8134 in ?? () from /usr/lib64/kde4/searchbarplugin.so actually are in the code. (Rex, if you can provide the backtrace with debugging info, feel free to cancel the needinfo.)
Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7f15e22cd790 (LWP 24712)] 0x0000003a7e4f78a1 in qt_qFindChild_helper () from /usr/lib64/libQtCore.so.4 (gdb) where #0 0x0000003a7e4f78a1 in qt_qFindChild_helper () from /usr/lib64/libQtCore.so.4 #1 0x0000003a8022d0fc in KParts::BrowserExtension::childObject () from /usr/lib64/libkparts.so.4 #2 0x00007f15d8ca38de in SearchBarPlugin::startSearch (this=0x15885b0, search=@0x7fffea320060) at /usr/src/debug/konq-plugins-4.0.3/searchbar/searchbar.cpp:203 #3 0x00007f15d8ca7134 in SearchBarPlugin::qt_metacall (this=0x15885b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffea31f3b0) at /usr/src/debug/konq-plugins-4.0.3/x86_64-redhat-linux- #4 0x0000003a7e4fc396 in QMetaObject::activate () from /usr/lib64/libQtCore.so.4 #5 0x0000003a7f83b235 in QComboBox::activated () from /usr/lib64/libQtGui.so.4 #6 0x0000003a85e83913 in KHistoryComboBox::slotSimulateActivated () from /usr/lib64/libkdeui.so.5 #7 0x0000003a85e852d5 in KHistoryComboBox::qt_metacall () from /usr/lib64/libkdeui.so.5 #8 0x00007f15d8ca324d in SearchBarCombo::qt_metacall (this=0x3a7e7854e0, _c=3929140080, _id=-2143001824, _a=0x0) at /usr/src/debug/konq-plugins-4.0.3/x86_64-redhat-linux- #9 0x0000003a7e4fc396 in QMetaObject::activate () from /usr/lib64/libQtCore.so.4 ---Type <return> to continue, or q <return> to quit--- #10 0x0000003a85e72d15 in KComboBox::returnPressed () from /usr/lib64/libkdeui.so.5 #11 0x0000003a85e73ea4 in KComboBox::qt_metacall () from /usr/lib64/libkdeui.so.5 #12 0x0000003a85e85195 in KHistoryComboBox::qt_metacall () from /usr/lib64/libkdeui.so.5 #13 0x00007f15d8ca324d in SearchBarCombo::qt_metacall (this=0x3a7e7854e0, _c=3929140080, _id=-2143001824, _a=0x0) at /usr/src/debug/konq-plugins-4.0.3/x86_64-redhat-linux- #14 0x0000003a7e4fc396 in QMetaObject::activate () from /usr/lib64/libQtCore.so.4 #15 0x0000003a85e8aff5 in KLineEdit::returnPressed () from /usr/lib64/libkdeui.so.5 #16 0x0000003a85e92a25 in KLineEdit::event () from /usr/lib64/libkdeui.so.5 #17 0x0000003a7f840311 in QComboBox::keyPressEvent () from /usr/lib64/libQtGui.so.4 #18 0x0000003a85e84f14 in KHistoryComboBox::keyPressEvent () from /usr/lib64/libkdeui.so.5 #19 0x0000003a7f5d3e5a in QWidget::event () from /usr/lib64/libQtGui.so.4 #20 0x0000003a7f590df1 in QApplicationPrivate::notify_helper () from /usr/lib64/libQtGui.so.4 #21 0x0000003a7f5984dc in QApplication::notify () from /usr/lib64/libQtGui.so.4 #22 0x0000003a85de323b in KApplication::notify () from /usr/lib64/libkdeui.so.5 #23 0x0000003a7e4ea9f0 in QCoreApplication::notifyInternal () from /usr/lib64/libQtCore.so.4 ---Type <return> to continue, or q <return> to quit--- #24 0x0000003a7f6033cd in ?? () from /usr/lib64/libQtGui.so.4 #25 0x0000003a7f6053c8 in ?? () from /usr/lib64/libQtGui.so.4 #26 0x0000003a7f5e2efb in QApplication::x11ProcessEvent () from /usr/lib64/libQtGui.so.4 #27 0x0000003a7f606bfc in ?? () from /usr/lib64/libQtGui.so.4 #28 0x0000003a7943749b in g_main_context_dispatch () from /lib64/libglib-2.0.so.0 #29 0x0000003a7943ac7d in ?? () from /lib64/libglib-2.0.so.0 #30 0x0000003a7943ae3b in g_main_context_iteration () from /lib64/libglib-2.0.so.0 #31 0x0000003a7e50a741 in QEventDispatcherGlib::processEvents () from /usr/lib64/libQtCore.so.4 #32 0x0000003a7f60647f in ?? () from /usr/lib64/libQtGui.so.4 #33 0x0000003a7e4e98a8 in QEventLoop::processEvents () from /usr/lib64/libQtCore.so.4 #34 0x0000003a7e4e9a85 in QEventLoop::exec () from /usr/lib64/libQtCore.so.4 #35 0x0000003a7e4ecbc7 in QCoreApplication::exec () from /usr/lib64/libQtCore.so.4 #36 0x0000003a81abc5d2 in kdemain () from /usr/lib64/libkdeinit4_konqueror.so #37 0x0000003a7641e32a in __libc_start_main () from /lib64/libc.so.6 #38 0x0000000000400809 in _start () (gdb)
Got a little cutoff: #8 0x00007f15d8ca324d in SearchBarCombo::qt_metacall (this=0x3a7e7854e0, _c=3929140080, _id=-2143001824, _a=0x0) at /usr/src/debug/konq-plugins-4.0.3/x86_64-redhat-linux- at /usr/src/debug/konq-plugins-4.0.3/x86_64-redhat-linux-gnu/searchbar/searchbar.moc:64
That should suffice, let me look at what's going on.
The line which crashes is this: KParts::BrowserExtension * ext = KParts::BrowserExtension::childObject(m_part); The code which finds m_part has been changed on April 7 (2 days before Sebastian took the snapshot), here: http://websvn.kde.org/?view=rev&revision=794424 "listen to (new) PartActivateEvent from konqmainwindow, instead of the qFindChild<KParts::PartManager*> hack." I can try to revert this change.
Can you please try this build to see if this fixes it? http://koji.fedoraproject.org/koji/taskinfo?taskID=595103
If this doesn't work, I can also try reverting this pair of commits (which adds WebKitPart support, we don't ship the WebKitPart anyway): http://websvn.kde.org/?view=rev&revision=794409 http://websvn.kde.org/?view=rev&revision=794422 The second commit in that series is what introduced the line which crashes.
Appears to be fixed (comment #7)!
konq-plugins-4.0.3-0.3.20080409svn.fc9 has been submitted as an update for Fedora 9
konq-plugins-4.0.3-0.3.20080409svn.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.