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List: kstars-devel
Subject: Re: Segfault on command line generation
From: Umair Khan <ukhan () pdx ! edu>
Date: 2020-07-03 20:36:45
Message-ID: AEFFD2E0-2C61-48FB-A8D6-713D3C406E8F () getmailspring ! com
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Hello, thanks for the response. The command I am using is: kstars --dump --filename \
kstars.png --height 640 --width 480. I got the command from this page in the \
handbook: https://docs.kde.org/trunk5/en/extragear-edu/kstars/dumpmode.html I also \
just ran it with gdb. Below is the backtrace.
...
Loading satellites
[New Thread 0x7fffb7659700 (LWP 16238)]
QPaintDevice: Cannot destroy paint device that is being painted
Thread 1 "kstars" received signal SIGSEGV, Segmentation fault.
0x00007ffff30da7a6 in QPainter::end() () from \
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 (gdb) bt
#0 0x00007ffff30da7a6 in QPainter::end() () at \
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #1 0x00007ffff30db3f8 in \
QPainter::~QPainter() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #2 \
0x0000555555b2ad28 in SkyLabeler::~SkyLabeler() (this=0x555556a94000, \
__in_chrg=<optimized out>) at ./kstars/skycomponents/skylabeler.cpp:111 #3 \
0x0000555555679f01 in std::default_delete<SkyLabeler>::operator()(SkyLabeler*) const \
(this=<optimized out>, __ptr=0x555556a94000) at \
/usr/include/c++/7/bits/unique_ptr.h:78 #4 0x0000555555679f01 in \
std::unique_ptr<SkyLabeler, std::default_delete<SkyLabeler> >::~unique_ptr() \
(this=0x5555569549b8, __in_chrg=<optimized out>) at \
/usr/include/c++/7/bits/unique_ptr.h:263 #5 0x0000555555679f01 in \
SkyMapComposite::~SkyMapComposite() (this=0x5555569548c0, __in_chrg=<optimized out>) \
at ./kstars/skycomponents/skymapcomposite.h:84 #6 0x000055555567e2c8 in \
SkyMapComposite::~SkyMapComposite() (this=0x5555569548c0, __in_chrg=<optimized out>) \
at ./kstars/skycomponents/skymapcomposite.h:84 #7 0x000055555567e2c8 in \
std::default_delete<SkyMapComposite>::operator()(SkyMapComposite*) const \
(this=<optimized out>, __ptr=0x5555569548c0) at \
/usr/include/c++/7/bits/unique_ptr.h:78 #8 0x000055555567e2c8 in \
std::unique_ptr<SkyMapComposite, std::default_delete<SkyMapComposite> \
>::~unique_ptr() (this=0x55555691ae18, __in_chrg=<optimized out>) at \
> /usr/include/c++/7/bits/unique_ptr.h:263
#9 0x000055555567e2c8 in KStarsData::~KStarsData() (this=0x55555691ae00, \
__in_chrg=<optimized out>) at ./kstars/kstarsdata.cpp:119 #10 0x000055555567e4bd in \
KStarsData::~KStarsData() (this=0x55555691ae00, __in_chrg=<optimized out>) at \
./kstars/kstarsdata.cpp:130 #11 0x000055555562c9a5 in main(int, char**) \
(argc=<optimized out>, argv=<optimized out>) at ./kstars/main.cpp:309
Thank you for the workaround, I will look into that as well.
Best,
Umair
On Jul 3 2020, at 1:25 pm, Akarsh Simha <akarshsimha@gmail.com> wrote:
> Hi Umair
>
> I don't see the instructions you refer to. Could you give me the procedure you \
> used? I'm not very familiar with valgrind either, but a backtrace from running \
> under gdb should suffice. If you can tell me how you're invoking it from the \
> command line, I'll look into it and see if I can reproduce the crash.
> Also: a workaround is to get the charts from the DBus interface when KStars is \
> fully up and running.
> Regards
> Akarsh
>
>
> On Fri, Jul 3, 2020 at 10:19 Umair Khan <ukhan@pdx.edu (mailto:ukhan@pdx.edu)> \
> wrote:
> > Hello,
> >
> > My name is Umair Khan, and I'm a student at Portland State University in Oregon. \
> > I'm not sure if this mailing list is a place to seek user support, so apologies \
> > if this is not the correct way to ask questions. I'm trying to use KStars to \
> > generate images of the night sky from the command line, as per the instructions \
> > listed here. However, when I attempt to do so, the program segfaults with no \
> > error messages, and I'm not quite sure if or how this issue can be fixed. I was \
> > hoping someone here could provide some insight or a solution. The GUI, on the \
> > other hand, works completely fine (at least as far as I can tell). Below are the \
> > details for the hardware I'm running KStars on:
> > OS: Ubuntu 18.04.4
> >
> > Kernel: 4.15.0-108-generic
> >
> > DE: GNOME 3.28.4
> >
> > CPU: Intel Core i7-6600u
> >
> >
> > In addition, I have attached two text files to this email containing shell \
> > input/output. One is for the plain command (default.txt), and another is a debug \
> > run using valgrind (valgrind.txt). Valgrind does appear to show several errors, \
> > but I am not quite sure how to interpret them or go about fixing them. Any help \
> > would be much appreciated.
> > Thanks a lot for your consideration!
> > Best,
> > Umair
>
>
>
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<div>Hello, thanks for the response. The command I am using is: kstars --dump \
--filename kstars.png --height 640 --width 480. I got the command from this page in \
the handbook: <a href="https://docs.kde.org/trunk5/en/extragear-edu/kstars/dumpmode.html" \
title="https://docs.kde.org/trunk5/en/extragear-edu/kstars/dumpmode.html">https://docs.kde.org/trunk5/en/extragear-edu/kstars/dumpmode.html</a><br></div><div>I \
also just ran it with gdb. Below is the \
backtrace.</div><br><div>...</div><div>Loading satellites</div><div>[New Thread \
0x7fffb7659700 (LWP 16238)]</div><div>QPaintDevice: Cannot destroy paint device that \
is being painted</div><div>Thread 1 "kstars" received signal SIGSEGV, Segmentation \
fault.</div><div>0x00007ffff30da7a6 in QPainter::end() () from \
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5</div><div>(gdb) bt</div><div>#0 \
0x00007ffff30da7a6 in QPainter::end() () at \
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5</div><div>#1 0x00007ffff30db3f8 in \
QPainter::~QPainter() () at \
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5</div><div>#2 0x0000555555b2ad28 in \
SkyLabeler::~SkyLabeler() (this=0x555556a94000, __in_chrg=<optimized out>) at \
./kstars/skycomponents/skylabeler.cpp:111</div><div>#3 0x0000555555679f01 in \
std::default_delete<SkyLabeler>::operator()(SkyLabeler*) const \
(this=<optimized out>, __ptr=0x555556a94000) at \
/usr/include/c++/7/bits/unique_ptr.h:78</div><div>#4 0x0000555555679f01 in \
std::unique_ptr<SkyLabeler, std::default_delete<SkyLabeler> \
>::~unique_ptr() (this=0x5555569549b8, __in_chrg=<optimized out>) at \
/usr/include/c++/7/bits/unique_ptr.h:263</div><div>#5 0x0000555555679f01 in \
SkyMapComposite::~SkyMapComposite() (this=0x5555569548c0, __in_chrg=<optimized \
out>) at ./kstars/skycomponents/skymapcomposite.h:84</div><div>#6 \
0x000055555567e2c8 in SkyMapComposite::~SkyMapComposite() (this=0x5555569548c0, \
__in_chrg=<optimized out>) at \
./kstars/skycomponents/skymapcomposite.h:84</div><div>#7 0x000055555567e2c8 in \
std::default_delete<SkyMapComposite>::operator()(SkyMapComposite*) const \
(this=<optimized out>, __ptr=0x5555569548c0) at \
/usr/include/c++/7/bits/unique_ptr.h:78</div><div>#8 0x000055555567e2c8 in \
std::unique_ptr<SkyMapComposite, std::default_delete<SkyMapComposite> \
>::~unique_ptr() (this=0x55555691ae18, __in_chrg=<optimized out>) at \
/usr/include/c++/7/bits/unique_ptr.h:263</div><div>#9 0x000055555567e2c8 in \
KStarsData::~KStarsData() (this=0x55555691ae00, __in_chrg=<optimized out>) at \
./kstars/kstarsdata.cpp:119</div><div>#10 0x000055555567e4bd in \
KStarsData::~KStarsData() (this=0x55555691ae00, __in_chrg=<optimized out>) at \
./kstars/kstarsdata.cpp:130</div><div>#11 0x000055555562c9a5 in main(int, char**) \
(argc=<optimized out>, argv=<optimized out>) at \
./kstars/main.cpp:309</div><br><div>Thank you for the workaround, I will look into \
that as well.</div><br><div>Best,</div><div>Umair</div><br><div \
class="gmail_quote_attribution">On Jul 3 2020, at 1:25 pm, Akarsh Simha \
<akarshsimha@gmail.com> wrote:</div><blockquote><div><div>Hi \
Umair</div><div><br></div><div>I don't see the instructions you refer to. Could you \
give me the procedure you used? I'm not very familiar with valgrind either, but a \
backtrace from running under gdb should suffice. If you can tell me how you're \
invoking it from the command line, I'll look into it and see if I can reproduce the \
crash.</div><div><br></div><div>Also: a workaround is to get the charts from the DBus \
interface when KStars is fully up and \
running.</div><div><br></div><div>Regards</div><div>Akarsh </div><div><br></div></div><div><br><div \
class="gmail_quote"><div class="gmail_attr"><div>On Fri, Jul 3, 2020 at 10:19 Umair \
Khan <<a href="mailto:ukhan@pdx.edu" \
title="mailto:ukhan@pdx.edu">ukhan@pdx.edu</a>> \
wrote:</div></div><blockquote><div>Hello,</div><br><div>My name is Umair Khan, and \
I'm a student at Portland State University in Oregon. I'm not sure if this mailing \
list is a place to seek user support, so apologies if this is not the correct way to \
ask questions.</div><br><div>I'm trying to use KStars to generate images of the night \
sky from the command line, as per the instructions listed here. However, when I \
attempt to do so, the program segfaults with no error messages, and I'm not quite \
sure if or how this issue can be fixed. I was hoping someone here could provide some \
insight or a solution.</div><br><div>The GUI, on the other hand, works completely \
fine (at least as far as I can tell). Below are the details for the hardware I'm \
running KStars on:</div><ul><li><div>OS: Ubuntu 18.04.4</div></li><li><div>Kernel: \
4.15.0-108-generic</div></li><li><div>DE: GNOME 3.28.4</div></li><li><div>CPU: Intel \
Core i7-6600u</div></li></ul><div>In addition, I have attached two text files to this \
email containing shell input/output. One is for the plain command (default.txt), and \
another is a debug run using valgrind (valgrind.txt). Valgrind does appear to show \
several errors, but I am not quite sure how to interpret them or go about fixing \
them. Any help would be much appreciated.</div><br><div>Thanks a lot for your \
consideration!</div><br><div>Best,</div><div>Umair</div></blockquote></div></div></blockquote>
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