Version: 2.4-GIT (using KDE 4.6.0) OS: Linux Attempting to seek causes the progress bar to fail (it simply sticks where left in the current song, and stays at 0:00 in subsequent songs). It doesn't actually seek. Playback is not affected. Closing Amarok after triggering this bug causes a segfault (backtrace in comments). Reproducible: Always Steps to Reproduce: Attempt to seek. Actual Results: Progress bar sticks. Crash on exit. Expected Results: Seeking should work. Progress bar should not break. Should not crash on exit. I am using the Phonon VLC backend with Amarok, VLC, phonon-vlc and Phonon all built from git. On Kubuntu 10.10.
gdb output: [Thread 0x7fffbab3f700 (LWP 11660) exited] Program received signal SIGSEGV, Segmentation fault. 0x00007ffff5445f44 in QObject::metaObject (this=0x6c2cc0) at .moc/release-shared/moc_qobject.cpp:90 90 .moc/release-shared/moc_qobject.cpp: No such file or directory. in .moc/release-shared/moc_qobject.cpp (gdb) thread apply all bt Thread 16 (Thread 0x7fffba70e700 (LWP 9769)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff1454334 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7ffff175f160) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359 #2 0x00007ffff1454369 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7ffff176d234) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464 #3 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #4 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5 0x0000000000000000 in ?? () Thread 11 (Thread 0x7fffbb3b3700 (LWP 9763)): #0 0x00007ffff4b08203 in __poll (fds=<value optimised out>, nfds=<value optimised out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007fffeeb9c009 in ?? () from /lib/libglib-2.0.so.0 #2 0x00007fffeeb9c45c in g_main_context_iteration () from /lib/libglib-2.0.so.0 #3 0x00007ffff5462193 in QEventDispatcherGlib::processEvents (this=0x1506c40, flags=<value optimised out>) at kernel/qeventdispatcher_glib.cpp:415 #4 0x00007ffff5434a02 in QEventLoop::processEvents (this=<value optimised out>, flags=DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece. ) at kernel/qeventloop.cpp:149 #5 0x00007ffff5434dec in QEventLoop::exec (this=0x7fffbb3b2d70, flags=DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece. ) at kernel/qeventloop.cpp:201 #6 0x00007ffff533f2fd in QThread::exec (this=<value optimised out>) at thread/qthread.cpp:490 #7 0x00007ffff54145f8 in QInotifyFileSystemWatcherEngine::run (this=0x14ad160) at io/qfilesystemwatcher_inotify.cpp:248 #8 0x00007ffff534227e in QThreadPrivate::start (arg=0x14ad160) at thread/qthread_unix.cpp:266 #9 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #10 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #11 0x0000000000000000 in ?? () Thread 10 (Thread 0x7fffbd87e700 (LWP 9762)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff5342e3b in wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88 #2 QWaitCondition::wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160 #3 0x00007ffff28b1d64 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x125d520, th= 0x1283700) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007ffff28b4f6b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x1283700) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007ffff28b34df in ThreadWeaver::ThreadRunHelper::run (this=0x7fffbd87ddc0, parent=0x125d520, th=0x1283700) at ../../../threadweaver/Weaver/Thread.cpp:87 #6 0x00007ffff28b3a38 in ThreadWeaver::Thread::run (this=0x1283700) at ../../../threadweaver/Weaver/Thread.cpp:142 #7 0x00007ffff534227e in QThreadPrivate::start (arg=0x1283700) at thread/qthread_unix.cpp:266 #8 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #9 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () Thread 9 (Thread 0x7fffbe07f700 (LWP 9761)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff5342e3b in wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88 #2 QWaitCondition::wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160 #3 0x00007ffff28b1d64 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x125d520, th=0x1274920) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007ffff28b4f6b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x1274920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x1274920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #6 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x1274920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #7 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x1274920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #8 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x1274920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #9 0x00007ffff28b34df in ThreadWeaver::ThreadRunHelper::run (this=0x7fffbe07edc0, parent=0x125d520, th=0x1274920) at ../../../threadweaver/Weaver/Thread.cpp:87 #10 0x00007ffff28b3a38 in ThreadWeaver::Thread::run (this=0x1274920) at ../../../threadweaver/Weaver/Thread.cpp:142 #11 0x00007ffff534227e in QThreadPrivate::start (arg=0x1274920) at thread/qthread_unix.cpp:266 #12 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #13 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #14 0x0000000000000000 in ?? () Thread 8 (Thread 0x7fffbe880700 (LWP 9760)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff5342e3b in wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88 #2 QWaitCondition::wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160 #3 0x00007ffff28b1d64 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x125d520, th=0x12680b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007ffff28b4f6b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #6 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #7 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #8 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #9 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #10 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x12680b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #11 0x00007ffff28b34df in ThreadWeaver::ThreadRunHelper::run (this=0x7fffbe87fdc0, parent=0x125d520, th=0x12680b0) at ../../../threadweaver/Weaver/Thread.cpp:87 #12 0x00007ffff28b3a38 in ThreadWeaver::Thread::run (this=0x12680b0) at ../../../threadweaver/Weaver/Thread.cpp:142 #13 0x00007ffff534227e in QThreadPrivate::start (arg=0x12680b0) at thread/qthread_unix.cpp:266 #14 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #15 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #16 0x0000000000000000 in ?? () Thread 7 (Thread 0x7fffbf081700 (LWP 9759)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff5342e3b in wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88 #2 QWaitCondition::wait (this=<value optimised out>, mutex=0x125d870, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160 #3 0x00007ffff28b1d64 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x125d520, th=0x125dca0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365 #4 0x00007ffff28b4f6b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x125dca0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71 #5 0x00007ffff28b4f84 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1250300, th=0x125dca0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74 #6 0x00007ffff28b34df in ThreadWeaver::ThreadRunHelper::run (this=0x7fffbf080dc0, parent=0x125d520, th=0x125dca0) at ../../../threadweaver/Weaver/Thread.cpp:87 #7 0x00007ffff28b3a38 in ThreadWeaver::Thread::run (this=0x125dca0) at ../../../threadweaver/Weaver/Thread.cpp:142 #8 0x00007ffff534227e in QThreadPrivate::start (arg=0x125dca0) at thread/qthread_unix.cpp:266 #9 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #10 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #11 0x0000000000000000 in ?? () Thread 6 (Thread 0x7fffca791700 (LWP 9758)): #0 0x00007ffff4b08203 in __poll (fds=<value optimised out>, nfds=<value optimised out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007fffeeb9c009 in ?? () from /lib/libglib-2.0.so.0 #2 0x00007fffeeb9c45c in g_main_context_iteration () from /lib/libglib-2.0.so.0 #3 0x00007ffff5462193 in QEventDispatcherGlib::processEvents (this=0xa3e150, flags=<value optimised out>) at kernel/qeventdispatcher_glib.cpp:415 #4 0x00007ffff5434a02 in QEventLoop::processEvents (this=<value optimised out>, flags=DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece. ) at kernel/qeventloop.cpp:149 #5 0x00007ffff5434dec in QEventLoop::exec (this=0x7fffca790d70, flags=DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece. ) at kernel/qeventloop.cpp:201 #6 0x00007ffff533f2fd in QThread::exec (this=<value optimised out>) at thread/qthread.cpp:490 #7 0x00007ffff54145f8 in QInotifyFileSystemWatcherEngine::run (this=0xd6a5a0) at io/qfilesystemwatcher_inotify.cpp:248 #8 0x00007ffff534227e in QThreadPrivate::start (arg=0xd6a5a0) at thread/qthread_unix.cpp:266 #9 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #10 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #11 0x0000000000000000 in ?? () Thread 4 (Thread 0x7fffcbabe700 (LWP 9754)): #0 0x00007ffff4b0d2c3 in select () at ../sysdeps/unix/syscall-template.S:82 #1 0x00007ffff5411e8d in QProcessManager::run (this=0x7ffff5767f40) at io/qprocess_unix.cpp:245 #2 0x00007ffff534227e in QThreadPrivate::start (arg=0x7ffff5767f40) at thread/qthread_unix.cpp:266 #3 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #4 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5 0x0000000000000000 in ?? () Thread 2 (Thread 0x7fffcc8c1700 (LWP 9752)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007fffdc106162 in Thread () from /usr/lib/libvlccore.so.5 #2 0x00007ffff0b50971 in start_thread (arg=<value optimised out>) at pthread_create.c:304 #3 0x00007ffff4b1492d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #4 0x0000000000000000 in ?? () Thread 1 (Thread 0x7fffe37037a0 (LWP 9717)): #0 0x00007ffff5445f44 in QObject::metaObject (this=0x6c2cc0) at .moc/release-shared/moc_qobject.cpp:90 #1 0x00007fffdc1d3d8a in Phonon::VLC::Backend::endConnectionChange (this=0x6c8820, objects=...) at /media/disk2/home-expansion/devel/phonon-vlc/vlc/backend.cpp:517 #2 0x00007ffff7ec071c in Phonon::ConnectionTransaction::~ConnectionTransaction (this=0x7fffffffb8a0, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/phonon/phonon/path.cpp:46 #3 0x00007ffff7ebfa5b in Phonon::PathPrivate::executeTransaction (this=0x6cb200, disconnections=..., connections=...) at /media/disk2/home-expansion/devel/phonon/phonon/path.cpp:354 #4 0x00007ffff7ebfea1 in Phonon::PathPrivate::phononObjectDestroyed (this=0x6cb200, mediaNodePrivate=0x67e5a0) at /media/disk2/home-expansion/devel/phonon/phonon/path.cpp:408 #5 0x00007ffff7ebd0b9 in Phonon::MediaNodePrivate::~MediaNodePrivate (this=0x67e5a0, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/phonon/phonon/medianode.cpp:71 #6 0x00007ffff7ebcdc1 in Phonon::MediaObjectPrivate::~MediaObjectPrivate (this=0x67e5a0, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/phonon/phonon/mediaobject_p.h:42 #7 0x00007ffff7ebcf2e in Phonon::MediaNode::~MediaNode (this=0x673e60, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/phonon/phonon/medianode.cpp:57 #8 0x00007ffff7eb8aa1 in Phonon::MediaObject::~MediaObject (this=0x673e50, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/phonon/phonon/mediaobject.cpp:65 #9 0x00007ffff72af201 in EngineController::~EngineController (this=0x67f5f0, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/amarok/src/EngineController.cpp:113 #10 0x00007ffff73e0d12 in Amarok::DefaultApplicationController::shutdown (this=0x5ab5d0) at /media/disk2/home-expansion/devel/amarok/src/statemanagement/DefaultApplicationController.cpp:60 #11 0x00007ffff729c792 in App::~App (this=0x7fffffffbc00, __in_chrg=<value optimised out>) at /media/disk2/home-expansion/devel/amarok/src/App.cpp:276 #12 0x000000000040ce5d in main (argc=3, argv=0x7fffffffe128) at /media/disk2/home-expansion/devel/amarok/src/main.cpp:282
Did you build phonon from git master?
Yes, Phonon and the backend are built from git master.
Thank you for the feedback.
I am pretty sure that happend right after you changed the backend and did not restart Amarok, right? If so, then this is a duplicate of https://bugs.kde.org/show_bug.cgi?id=210427
This wasn't linked to backend changes, no; it was a crash on exit regardless. It's been fixed in the last few days, though.
Reassigning to the new bugzilla product for better bug tracing of the various backends. Sorry for the noise.
*** Bug 268004 has been marked as a duplicate of this bug. ***