On Sat, Oct 25 2014, Rene Engelhard wrote:
> found 766788 1:4.3.3~rc2~git20141011-1
> severity 766788 normal
> thanks
>
> Hi,
>
> On Sat, Oct 25, 2014 at 09:00:37PM +0200, Michal Sojka wrote:
>> LibreOffice Writer crashes after performing the following steps:
>> 
>> 1. Start lowriter (when started from terminal, an error message can be
>>    seen, otherwise the crash is "silent").
>> 2. Press '[' and keep it pressed for several seconds.
>> 3. After about one and half line is filled with '[', lowriter crashes.
>
> And that is important? 

I consider crashes as important bugs.

> In what way? Why would anyone do something like that in a document?

I expected that if it crashes with '[', it might also crash with other
text. But yes, currently, this is only my speculation.

>> I can reproduce this in both unstable and testing
>> (1:4.3.3~rc2~git20141011-1). I cannot reproduce this in the version
>
> And why are you then not marking it as such?

How can I do that next time? https://www.debian.org/Bugs/Reporting does
not mention how to mark multiple version.


>> from libreoffice.org (LibreOffice_4.3.2_Linux_x86-64_deb.tar.gz).
>
> And with 4.3.3 rc1? (Or rc2 which would be in the next days)
> You right now compare a 4.3.2 with a -between-4.3.3-rc1-and-rc2
> or 4.3.3 rc2 ;)
>
>> After the crash the following information appears on the terminal:
>> 
>> *** stack smashing detected ***: /usr/lib/libreoffice/program/soffice.bin 
>> terminated
>> ======= Backtrace: =========
>> /lib/x86_64-linux-gnu/libc.so.6(+0x72faf)[0x7fdd44a1ffaf]
>> /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7fdd44aa30a7]
>> /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x0)[0x7fdd44aa3070]
>
> But given it runs into the fortify functions it probably won't appear
> in 4.3.3 rc1 upstream until it's a real crash also there; upstream doesn't
> use those hardening flags.

I was able to reproduce this in my own build of libreoffice. Any hint
how to best debug this with gdb?

Thanks
-Michal


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