Re: [LMMS-devel] [ lmms-Bugs-2920183 ] Mutting an FX channel = crash

[Stephane T. <st...@ne...>]

Hi,

I still have the bug, but I can't manage to reopen the ticket on the
tracker...

After I mute a channel, cpu utilization for lmms is about 150 %, lmms
is frozen.

gdb :

^C
Program received signal SIGINT, Interrupt.
pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
162	../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:
Aucun fichier ou dossier de ce type.
in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (gdb)
thread apply all bt

Thread 8 (Thread 0x7fffc3691710 (LWP 24901)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1
0x00007ffff6560e8b in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4 #2  0x00007ffff655cc24 in
QSemaphore::acquire(int) () from /usr/lib/libQtCore.so.4 #3
0x00000000004e8fe6 in AudioOutputContext::getCurrentOutputBuffer
(this=0x954e60, _destBuf=0x80, _destSampleRate=19007)
at /usr/local/src/lmms/src/core/audio/AudioOutputContext.cpp:224 #4
0x00000000004edcab in AudioAlsa::run (this=0x953230)
at /usr/local/src/lmms/src/core/audio/AudioAlsa.cpp:265 #5
0x00007ffff655fe35 in ?? () from /usr/lib/libQtCore.so.4 #6
0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at
pthread_create.c:300 #7  0x00007ffff374902d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8  0x0000000000000000
in ?? ()

Thread 7 (Thread 0x7fffc3e92710 (LWP 24900)):
#0  __lll_unlock_wake ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:366 #1
0x00007ffff7bcd544 in _L_unlock_548 () from /lib/libpthread.so.0 #2
0x00007ffff7bcd474 in __pthread_mutex_unlock_usercnt (mutex=0x950e70,
decr=<value optimized out>) at pthread_mutex_unlock.c:52 #3
0x00007ffff6560aa0 in QWaitCondition::wakeAll() ()
from /usr/lib/libQtCore.so.4 #4  0x0000000000502f30 in
MixerWorkerThread::startAndWaitForJobs ()
at /usr/local/src/lmms/src/core/MixerWorkerThread.cpp:143 #5
0x0000000000528f45 in FxMixer::masterMix (this=0xb1e870, _buf=0x951870)
at /usr/local/src/lmms/src/core/FxMixer.cpp:473 #6  0x000000000054c735
in Mixer::renderNextBuffer (this=0x943cc0)
at /usr/local/src/lmms/src/core/Mixer.cpp:374 #7  0x00000000004e91ac in
AudioOutputContext::FifoWriter::run (this=0x12b36d0)
at /usr/local/src/lmms/src/core/audio/AudioOutputContext.cpp:302 #8
0x00007ffff655fe35 in ?? () from /usr/lib/libQtCore.so.4 #9
0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at
pthread_create.c:300 #10 0x00007ffff374902d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #11 0x0000000000000000
in ?? ()

Thread 5 (Thread 0x7fffe2312710 (LWP 24898)):
#0  0x00007ffff373e113 in *__GI___poll (fds=<value optimized out>,
nfds=<value optimized out>, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:87 #1  0x00007ffff2f92299 in ?? ()
from /lib/libglib-2.0.so.0 #2  0x00007ffff2f926ec in
g_main_context_iteration () from /lib/libglib-2.0.so.0 #3
0x00007ffff6678713 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/libQtCore.so.4 #4  0x00007ffff664da82 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4 #5  0x00007ffff664de5c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4 #6  0x00007ffff655d79b in QThread::exec()
() from /usr/lib/libQtCore.so.4 #7  0x00007ffff662e398 in ?? ()
from /usr/lib/libQtCore.so.4 #8  0x00007ffff655fe35 in ?? ()
from /usr/lib/libQtCore.so.4 #9  0x00007ffff7bc98ba in start_thread
(arg=<value optimized out>) at pthread_create.c:300 #10
0x00007ffff374902d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #11 0x0000000000000000
in ?? ()

Thread 4 (Thread 0x7fffe2b13710 (LWP 24897)):
#0  0x00007ffff373e113 in *__GI___poll (fds=<value optimized out>,
nfds=<value optimized out>, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:87 #1  0x00007ffff2f92299 in ?? ()
from /lib/libglib-2.0.so.0 #2  0x00007ffff2f926ec in
g_main_context_iteration () from /lib/libglib-2.0.so.0 #3
0x00007ffff6678713 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/libQtCore.so.4 #4  0x00007ffff664da82 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4 #5  0x00007ffff664de5c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4 #6  0x00007ffff655d79b in QThread::exec()
() from /usr/lib/libQtCore.so.4 #7  0x00007ffff662e398 in ?? ()
from /usr/lib/libQtCore.so.4 #8  0x00007ffff655fe35 in ?? ()
from /usr/lib/libQtCore.so.4 #9  0x00007ffff7bc98ba in start_thread
(arg=<value optimized out>) at pthread_create.c:300 #10
0x00007ffff374902d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #11 0x0000000000000000
in ?? ()

Thread 3 (Thread 0x7fffe3314710 (LWP 24896)):
#0  0x00007ffff373e113 in *__GI___poll (fds=<value optimized out>,
nfds=<value optimized out>, timeout=250)
at ../sysdeps/unix/sysv/linux/poll.c:87 #1  0x00000000005206b0 in
MidiAlsaSeq::run (this=0xa249d0)
at /usr/local/src/lmms/src/core/midi/MidiAlsaSeq.cpp:453 #2
0x00007ffff655fe35 in ?? () from /usr/lib/libQtCore.so.4 #3
0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at
pthread_create.c:300 #4  0x00007ffff374902d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5  0x0000000000000000
in ?? ()

---Type <return> to continue, or q <return> to quit---
Thread 2 (Thread 0x7fffe3b15710 (LWP 24893)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1
0x00007ffff6560e8b in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4 #2  0x0000000000502e3b in
MixerWorkerThread::run (this=0x988260)
at /usr/local/src/lmms/src/core/MixerWorkerThread.cpp:160 #3
0x00007ffff655fe35 in ?? () from /usr/lib/libQtCore.so.4 #4
0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at
pthread_create.c:300 #5  0x00007ffff374902d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6  0x0000000000000000
in ?? ()

Thread 1 (Thread 0x7ffff7fb1780 (LWP 24890)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1
0x00007ffff655f583 in ?? () from /usr/lib/libQtCore.so.4 #2
0x00007ffff655ae05 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#3  0x000000000055bd45 in Mixer::lock (this=0x1422380, _me=...,
_time=...) at /usr/local/src/lmms/include/Mixer.h:205 #4
InstrumentTrack::processInEvent (this=0x1422380, _me=..., _time=...)
at /usr/local/src/lmms/src/tracks/InstrumentTrack.cpp:226 #5
0x00000000004ae30d in Piano::handleKeyRelease (this=0x1423ff0, _key=39)
at /usr/local/src/lmms/src/core/Piano.cpp:107 #6  0x00000000005d2c27 in
PianoView::keyReleaseEvent (this=0x1640a00, _ke=0x7fffffffca90)
at /usr/local/src/lmms/src/gui/PianoView.cpp:674 #7  0x0000000000587ec5
in MainWindow::keyReleaseEvent (this=0xb36d80, _ke=0x7fffffffca90)
at /usr/local/src/lmms/src/gui/MainWindow.cpp:1419 #8
0x00007ffff71323c7 in QWidget::event(QEvent*) ()
from /usr/lib/libQtGui.so.4 #9  0x00007ffff74f530b in
QMainWindow::event(QEvent*) () from /usr/lib/libQtGui.so.4 #10
0x00007ffff70dc32c in QApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib/libQtGui.so.4 #11 0x00007ffff70e3fc5 in
QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#12 0x00007ffff664f15c in QCoreApplication::notifyInternal(QObject*,
QEvent*) () from /usr/lib/libQtCore.so.4 #13 0x00007ffff7186d1a in ??
() from /usr/lib/libQtGui.so.4 #14 0x00007ffff7189291 in ?? ()
from /usr/lib/libQtGui.so.4 #15 0x00007ffff7160a04 in
QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#16 0x00007ffff718c552 in ?? () from /usr/lib/libQtGui.so.4 #17
0x00007ffff2f8e6c2 in g_main_context_dispatch ()
from /lib/libglib-2.0.so.0 #18 0x00007ffff2f92538 in ?? ()
from /lib/libglib-2.0.so.0 #19 0x00007ffff2f926ec in
g_main_context_iteration () from /lib/libglib-2.0.so.0 #20
0x00007ffff6678713 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/libQtCore.so.4 #21 0x00007ffff718c14e in ?? ()
from /usr/lib/libQtGui.so.4 #22 0x00007ffff664da82 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4 #23 0x00007ffff664de5c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4 #24 0x00007ffff6652aeb in
QCoreApplication::exec() () from /usr/lib/libQtCore.so.4 #25
0x000000000049cc24 in main (argc=1, argv=<value optimized out>)
at /usr/local/src/lmms/src/core/main.cpp:547


On Thu, 02 Sep 2010 07:38:32 +0000
"SourceForge.net" <no...@so...> wrote:

> Bugs item #2920183, was opened at 2009-12-23 18:12
> Message generated for change (Comment added) made by tobydox
> You can respond by visiting: 
> https://sourceforge.net/tracker/?func=detail&atid=640434&aid=2920183&group_id=105168
> 
> Please note that this message will contain a full copy of the comment thread,
> including the initial issue submission, for this request,
> not just the latest update.
> Category: Crash
> Group: Git master branch
> >Status: Closed
> >Resolution: Fixed
> Priority: 5
> Private: No
> Submitted By: Stephane THOMAS (marotte37)
> >Assigned to: Tobias Doerffel (tobydox)
> Summary: Mutting an FX channel = crash
> 
> Initial Comment:
> Easy to reproduce :
> New song, mute the master channel of the mixer.
> 
> The same for any channel of the mixer.
> 
> LMMS will hang (no segfault) but it has to be killed and run again.
> 
> ----------------------------------------------------------------------
> 
> >Comment By: Tobias Doerffel (tobydox)
> Date: 2010-09-02 09:38
> 
> Message:
> Looks like this has been fixed in the meanwhile (maybe by commit
> b38eab007540bfed0c1c8376d02e60d504a1e2eb), therefore closing.
> 
> ----------------------------------------------------------------------
> 
> You can respond by visiting: 
> https://sourceforge.net/tracker/?func=detail&atid=640434&aid=2920183&group_id=105168
>