Created attachment 47641 [details] Fedora bug 580750 backtrace Version: 4.0 (using KDE 4.4.2) OS: Linux According to the bug wranglers on the Fedora Bugzilla this issue originated in the Oxygen style. As the original reporter in Fedora I'm posting this upstream. Fedora bug 580750 abrt 1.0.8 detected a crash. architecture: x86_64 Attached file: backtrace cmdline: /usr/lib64/qt4/examples/graphicsview/padnavigator/padnavigator comment: Crashes every time on my system when Closed. component: qt executable: /usr/lib64/qt4/examples/graphicsview/padnavigator/padnavigator kernel: 2.6.31.5-127.fc12.x86_64 package: qt-examples-1:4.6.2-8.fc12 rating: 4 reason: Process /usr/lib64/qt4/examples/graphicsview/padnavigator/padnavigator was killed by signal 11 (SIGSEGV) release: Fedora release 12 (Constantine) Reproducible: Always Steps to Reproduce: 1. Open qtdemo-qt4 2. Run the Graphics View > Pad Navigator example 3. Use arrow keys to navigate left, right, up, down, hit enter to open settings 4. Click window Close button Actual Results: Process /usr/lib64/qt4/examples/graphicsview/padnavigator/padnavigator was killed by signal 11 (SIGSEGV) Expected Results: padnavigator closes without errors Widgets: Oxygen style Fedora 12 KDE desktop, running KDM and KWin This machine has 2 quad-core processors, 16 CPUs Hyper Threaded, which has caused a few strange problems with other software in the past.
Hi, Changed severity to "crash". I think I've seen similar crash elsewhere. What's new though is that I can reproduce. (was not the case before). Will see what I can do.
After spending a couple of hours trying to figure out what's going on, without success, I gave a try to the same app, but linked agains Qt4.7 Miracle: no more crash. Since - the backtrace explicitly mentions issues inside Qt, at QPixmap deletion (which I though might have been triggered by some stuff in oxygen, but without finding anything wrong there) - the same crash can be seen (with Qt4.6) using the bespin style - the crash disappears when using Qt4.7 I (strongly) suspect a bug in Qt, that have been fixed for Qt4.7 (make sense ?) Closing as an upstream bug.