Bug#724502: kmix: KMix crashes when dragdrop channel

[Maximiliano Curia]

Hi,

 My sound card is Creative Labs SB Live! EMU10k1 (rev 0a) / Creative Labs
 SBLive! 5.1 Digital Model SB0220 backed by kernel module snd_emu10k1.
 It has a switch Mic Boost +20db. When I add it to the list of used channels
 and try to drag it KMix crashes.

My sound card has two mic boost, one for the internal mic and one for the
external, both seem to work fine, but, it's an internal intel sound card. So,
could you report if you can reproduce the issue with 4:4.13.1-1 (or newer), if
you can, the issue is hardware specific, and we'll need to bother you some
more. If not, then we can close this bug.

 Possibly I need to build kmix-dbg from Debian source package. Please adwise if
 it will be helpful.

The kmix package doesn't provide a -dbg package, you could rebuild kmix package
with:
DEB_BUILD_OPTIONS='nostrip noopt' apt-get -b source kmix

to get a .deb package with symbols and compiled without the compiler
optimizations (that make the debugging more confusing).

A more complete reference can be found here:
https://www.debian.org/doc/manuals/apt-howto/ch-sourcehandling.en.html

If you can still reproduce the issue, then, a backtrace would be useful.

 PS.
 For some reason Kde crash reporter said Kmix version is 4.3 thus declined to
 send bugreport.

That's the internal kmix version, for example the version in kde-sc 4.13 of kmix
is 4.5.

-- 
If I ask another professor what he teaches in the introductory programming
course, whether he answers proudly Pascal or diffidently FORTRAN, I know
that he is teaching a grammar, a set of semantic rules, and some finished
algorithms, leaving the students to discover, on their own, some process of
design.
-- Robert W. Floyd
Saludos /\/\ /\  `/


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Bug#724502: kmix: KMix crashes when dragdrop channel

[Igor Borski]

Package: kmix
Version: 4:4.10.5-1
Severity: important

Dear Maintainer,

My sound card is Creative Labs SB Live! EMU10k1 (rev 0a) / Creative Labs
SBLive! 5.1 Digital Model SB0220 backed by kernel module snd_emu10k1.
It has a switch Mic Boost +20db. When I add it to the list of used channels
and try to drag it KMix crashes.

Possibly I need to build kmix-dbg from Debian source package. Please adwise if
it will be helpful.

The crash can be reproduced every time.

PS.
For some reason Kde crash reporter said Kmix version is 4.3 thus declined to
send bugreport.

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'testing-proposed-updates'), (500,
'unstable'), (500, 'stable'), (101, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.11-1.dmz.1-liquorix-amd64 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages kmix depends on:
ii  kde-runtime  4:4.10.5-1
ii  libasound2   1.0.27.2-1
ii  libc62.17-92+b1
ii  libcanberra0 0.30-2
ii  libkdecore5  4:4.10.5-1+b1
ii  libkdeui54:4.10.5-1+b1
ii  libplasma3   4:4.10.5-1+b1
ii  libpulse-mainloop-glib0  4.0-6+b1
ii  libpulse04.0-6+b1
ii  libqt4-dbus  4:4.8.5+dfsg-4
ii  libqt4-xml   4:4.8.5+dfsg-4
ii  libqtcore4   4:4.8.5+dfsg-4
ii  libqtgui44:4.8.5+dfsg-4
ii  libsolid44:4.10.5-1+b1
ii  libstdc++6   4.8.1-10

kmix recommends no packages.

kmix suggests no packages.
Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library /lib/x86_64-linux-gnu/libthread_db.so.1.
[Current thread is 1 (Thread 0x7f61ce7d6780 (LWP 3174))]

Thread 2 (Thread 0x7f61c31c2700 (LWP 3178)):
#0  0x003b732dd19d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x003b75e48194 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x003b75e4829c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x0032443a7d06 in QEventDispatcherGlib::processEvents 
(this=0x7f61bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#4  0x0032443797bf in QEventLoop::processEvents 
(this=this@entry=0x7f61c31c1db0, flags=...) at kernel/qeventloop.cpp:149
#5  0x003244379ab5 in QEventLoop::exec (this=this@entry=0x7f61c31c1db0, 
flags=...) at kernel/qeventloop.cpp:204
#6  0x0032442788cf in QThread::exec (this=this@entry=0x2406340) at 
thread/qthread.cpp:536
#7  0x00324435aee3 in QInotifyFileSystemWatcherEngine::run (this=0x2406340) 
at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00324427af6f in QThreadPrivate::start (arg=0x2406340) at 
thread/qthread_unix.cpp:338
#9  0x003b73a07e0e in start_thread (arg=0x7f61c31c2700) at 
pthread_create.c:311
#10 0x003b732e893d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f61ce7d6780 (LWP 3174)):
[KCrash Handler]
#6  length (this=0x2388410) at 
../../include/QtCore/../../src/corelib/tools/qstring.h:697
#7  operator (out=..., str=...) at tools/qstring.cpp:7555
#8  0x003249e673f8 in ?? () from 
/usr/lib/kde4/libkdeinit/libkdeinit4_kmix.so
#9  0x00324611f3d8 in QListModel::mimeData (this=0x23c8e10, indexes=...) at 
itemviews/qlistwidget.cpp:432
#10 0x0032460c55a0 in QAbstractItemView::startDrag 
(this=this@entry=0x2a2b0a0, supportedActions=...) at 
itemviews/qabstractitemview.cpp:3525
#11 0x0032460e5333 in QListView::startDrag (this=this@entry=0x2a2b0a0, 
supportedActions=...) at itemviews/qlistview.cpp:893
#12 0x0032460c3f29 in QAbstractItemView::mouseMoveEvent 
(this=this@entry=0x2a2b0a0, event=event@entry=0x7fffb4905d10) at 
itemviews/qabstractitemview.cpp:1725
#13 0x0032460e4ef4 in QListView::mouseMoveEvent (this=0x2a2b0a0, 
e=0x7fffb4905d10) at itemviews/qlistview.cpp:781
#14 0x003245c17e35 in QWidget::event (this=this@entry=0x2a2b0a0, 
event=event@entry=0x7fffb4905d10) at kernel/qwidget.cpp:8361
#15 0x003245fb595e in QFrame::event (this=0x2a2b0a0, e=0x7fffb4905d10) at 
widgets/qframe.cpp:557
#16 0x0032460c49d3 in QAbstractItemView::viewportEvent (this=0x2a2b0a0, 
event=0x7fffb4905d10) at itemviews/qabstractitemview.cpp:1644
#17 0x00324437acc6 in 
QCoreApplicationPrivate::sendThroughObjectEventFilters 
(this=this@entry=0x204c390, receiver=receiver@entry=0x265dbe0, 
event=event@entry=0x7fffb4905d10) at kernel/qcoreapplication.cpp:1059
#18 0x003245bc86ec in QApplicationPrivate::notify_helper 
(this=this@entry=0x204c390, receiver=receiver@entry=0x265dbe0, 
e=e@entry=0x7fffb4905d10) at kernel/qapplication.cpp:4563
#19 0x003245bceebd in QApplication::notify (this=this@entry=0x2020fa0, 
receiver=receiver@entry=0x265dbe0, e=e@entry=0x7fffb4905d10) at 
kernel/qapplication.cpp:4110
#20 0x003247641cfa in