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[Bug 447209] Re: xfce4-volumed crashed with SIGFPE in __libc_start_main()

 

I feel like a comment is needed from me, since I'm the person who was
meant to fix this bug a long time ago. Here is why it has not and will
probably never be fixed:

The bug is triggered on a limited set of hardware configurations, of
which I own none. On the computer on which xvd was developed, it never
crashed. On my alternative laptop, it crashed 4 times in six months, and
I suspect this was due to another problem related to my not-so-stable
Pulseaudio + Wine + crappy BIOS/Kernel setup.

The exact problem, as far as I can diagnose it, is a crash on track
volume querying. I do not know any more. I can not use a debugger to
find where it crashes since I can't reproduce the bug. I almost know
nothing of GStreamer, so I am not able to quote reasons that would lead
to a crash when a client application queries volume for an apparently
valid track. I believe I assigned one of the duplicate reports to the
GStreamer team, but got no answer.

#8, Frank, all these reports are automated reports of the same bug
happening on different setups. Considering the number of reports, it
affects a lot of people, yet a much bigger lot of people uses xvd
without any problem. Do not think the problem is being disregarded, I
just can not help it (see above as for why). It is rather pretentious of
you to write "stop saying you'll fix it, and fix it". I spent hours
looking for solutions to this problem, and if I could not find one, it's
certainly not my fault.

#9, Teej, I should have assigned myself to the upstream project instead
of the Ubuntu package, I'll grant you that. This is now done. Anyone
able to diagnose the bug better than me and to step in for fixing it is
free to assign oneself instead of me.

#12, Lionel, that would have caused a SIGFPE and not a SIGSEGV. The
problem is below, unfortunately. However, you're right about the lack of
sturdiness of the code (eventhough I know no configuration where the
volume range could be 0). Opening a new report about that. Thanks.

#16, Frank, thanks for the hardware configuration. Would you be kind
enough to check (with the lshw command) what model of sound card do you
exactly own? Also, kernel versions (uname -a) and gstreamer versions
(apt-cache policy libgstreamer-plugins-base0.10-0) might help any
passer-by developer who knows about GStreamer.

#19, Frank, the other problem seems completely unrelated. Please open a
new report against Xubuntu with the *exact* error messages you get.


Final comment: I need exact hardware/kernel/gstreamer configurations. There is no way for me to fix the bug, but anybody with the same configuration and who knows about debugging/development may be able to have a look. If you can reproduce the bug, a GDB trace of where it crashes (with the GStreamer debugging symbols installed, a nice function stack, and possibly some prints of the function parameters / local variables in where it crashes and the 1 or 2 functions above, plus the last function located in xvd) is more than welcome.


** Changed in: xfce4-volumed
   Importance: Undecided => High

** Changed in: xfce4-volumed
       Status: New => Won't Fix

** Changed in: xfce4-volumed
     Assignee: (unassigned) => Steve Dodier (sidi)

-- 
xfce4-volumed crashed with SIGFPE in __libc_start_main()
https://bugs.launchpad.net/bugs/447209
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