Application that crashed: k3b Version of the application: 1.70.0 KDE Version: 4.3.4 (KDE 4.3.4) Qt Version: 4.5.3 Operating System: Linux 2.6.32-3.slh.3-sidux-686 i686 Distribution: Debian GNU/Linux unstable (sid) What I was doing when the application crashed: There is a segmentation fault, splash screen is displayed. Additionally to genuine debug log, I quote here outputs to stderr: $ k3b K3bQProcess::QProcess(0x0) K3bQProcess::QProcess(0x0) KCrash: Application 'k3b' crashing... sock_file=/home/ralf/.kde/socket-siduxbox/kdeinit4__0 kdeinit4: preparing to launch /usr/lib/kde4/libexec/drkonqi kdeinit4: preparing to launch /usr/bin/kwalletmanager QSystemTrayIcon::setVisible: No Icon set kdeinit4: preparing to launch /usr/lib/kde4/kio_http.so kdeinit4: preparing to launch /usr/lib/libkdeinit4_kio_http_cache_cleaner.so kdeinit4: preparing to launch /usr/lib/kde4/kio_pop3.so -- Backtrace: Application: K3b (k3b), signal: Segmentation fault [Current thread is 1 (Thread 0xb3ee1960 (LWP 4518))] Thread 3 (Thread 0xb0fdbb70 (LWP 4545)): [KCrash Handler] #6 0xb77224c7 in K3b::Device::from4Byte(unsigned char*) () from /usr/lib/libk3bdevice.so.6 #7 0xb77055e3 in K3b::Device::Device::determineSupportedWriteSpeeds() const () from /usr/lib/libk3bdevice.so.6 #8 0xb75caffc in K3b::Medium::update() () from /usr/lib/libk3blib.so.6 #9 0xb75ce6ca in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3blib.so.6 #10 0xb54975e2 in QThreadPrivate::start (arg=0x9173aa0) at thread/qthread_unix.cpp:188 #11 0xb43c7585 in start_thread () from /lib/i686/cmov/libpthread.so.0 #12 0xb48d826e in clone () from /lib/i686/cmov/libc.so.6 Thread 2 (Thread 0xb07dab70 (LWP 4546)): #0 0xb7752424 in __kernel_vsyscall () #1 0xb43cb3d2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i686/cmov/libpthread.so.0 #2 0xb48e5834 in pthread_cond_timedwait () from /lib/i686/cmov/libc.so.6 #3 0xb5496fee in thread_sleep (ti=0xb07da2e0) at thread/qthread_unix.cpp:297 #4 0xb5497175 in QThread::sleep (secs=1265645148) at thread/qthread_unix.cpp:311 #5 0xb75ce759 in K3b::MediaCache::PollThread::run() () from /usr/lib/libk3blib.so.6 #6 0xb54975e2 in QThreadPrivate::start (arg=0x9010138) at thread/qthread_unix.cpp:188 #7 0xb43c7585 in start_thread () from /lib/i686/cmov/libpthread.so.0 #8 0xb48d826e in clone () from /lib/i686/cmov/libc.so.6 Thread 1 (Thread 0xb3ee1960 (LWP 4518)): #0 0xb48e597b in pthread_mutex_lock () from /lib/i686/cmov/libc.so.6 #1 0xb3f8915c in ?? () from /usr/lib/libxcb.so.1 #2 0xb3f896ee in ?? () from /usr/lib/libxcb.so.1 #3 0xb3f89a97 in xcb_writev () from /usr/lib/libxcb.so.1 #4 0xb4504549 in _XSend () from /usr/lib/libX11.so.6 #5 0xb44f0c62 in ?? () from /usr/lib/libX11.so.6 #6 0xb44f00ef in ?? () from /usr/lib/libX11.so.6 #7 0xb44f0e6a in XPutImage () from /usr/lib/libX11.so.6 #8 0xb4ca9cbc in QX11PixmapData::fromImage (this=0x91a6bb0, img=..., flags=...) at image/qpixmap_x11.cpp:563 #9 0xb4c957a9 in QPixmap::fromImage (image=..., flags=...) at image/qpixmap.cpp:1968 #10 0xb4c98434 in QPixmap::load (this=0xbfcc1988, fileName=..., format=0x0, flags=...) at image/qpixmap.cpp:804 #11 0xb4c98bcd in QPixmap (this=0xbfcc1988, fileName=..., format=0x0, flags=...) at image/qpixmap.cpp:267 #12 0x081a4075 in _start () This bug may be a duplicate of or related to bug 225539 Reported using DrKonqi
Created attachment 40603 [details] 2 strace logs: crash vs. nocrash To support debugging, I add two outputs of strace: k3b-strace.log stems from a call that did not lead to segfault k3b-strace.log.1 is from a crashing call slightly later. k3b seems to crash two or three times, when trying to launch, and then, again, it doesn't crash for two times or so. I hope that a diff on these logs can help more experienced developers to single out the source of this problem.
*** This bug has been marked as a duplicate of bug 204614 ***