Bug 1188002

Created attachment 986701 [details]
File: backtrace

Created attachment 986702 [details]
File: cgroup

Created attachment 986703 [details]
File: core_backtrace

Created attachment 986704 [details]
File: dso_list

Created attachment 986705 [details]
File: environ

Created attachment 986706 [details]
File: limits

Created attachment 986707 [details]
File: maps

Created attachment 986708 [details]
File: open_fds

Created attachment 986709 [details]
File: proc_pid_status

Created attachment 986710 [details]
File: var_log_messages

Created attachment 986711 [details]
File: exploitable

Created attachment 986947 [details]
A python script which opens and closes X display

Could you please try to run this simple test and report the results here?

Now it works:

$ ./py.py
It works!

May it be related to cases when few instances of X sessions run?

(In reply to Pavel Alexeev (aka Pahan-Hubbitus) from comment #13)
> Now it works:
> 
> $ ./py.py
> It works!

Thank you!

(In reply to Pavel Alexeev (aka Pahan-Hubbitus) from comment #14)
> May it be related to cases when few instances of X sessions run?

It failed for me when there was no X session running. Can you please this scenario too?

Steps to reproduce:

1. Download latest rawhide: https://kojipkgs.fedoraproject.org/work/tasks/2991/9722991/Fedora-Live-Workstation-x86_64-rawhide-20150513.iso

2. In gnome-terminal type 'python /usr/bin/gnome-abrt'

*** Bug 1217533 has been marked as a duplicate of this bug. ***

gnome-abrt no longer works in Rawhide.

(In reply to Moez Roy from comment #18)
> gnome-abrt no longer works in Rawhide.

Can you please do the test mentioned in comment #12?

Another user experienced a similar problem:

It crashes right after start.

reporter:       libreport-2.5.1
backtrace_rating: 4
cmdline:        /usr/bin/python3 /usr/bin/gnome-abrt
crash_function: XCloseDisplay
executable:     /usr/bin/python3.4
global_pid:     4744
kernel:         4.0.0-1.fc23.x86_64
package:        gnome-abrt-1.1.2-2.fc23
reason:         python3.4 killed by SIGSEGV
runlevel:       unknown
type:           CCpp
uid:            1000

(In reply to Jakub Filak from comment #19)
> (In reply to Moez Roy from comment #18)
> > gnome-abrt no longer works in Rawhide.
> 
> Can you please do the test mentioned in comment #12?

$ ./py.py 
Segmentation fault (core dumped)

(In reply to Vít Ondruch from comment #21)
> (In reply to Jakub Filak from comment #19)
> > (In reply to Moez Roy from comment #18)
> > > gnome-abrt no longer works in Rawhide.
> > 
> > Can you please do the test mentioned in comment #12?
> 
> $ ./py.py 
> Segmentation fault (core dumped)

Same here:

[liveuser@localhost ~]$ python2 test_display.py 
Segmentation fault (core dumped)

[liveuser@localhost ~]$ python3 test_display.py 
  File "test_display.py", line 18
    print "It works!"
                    ^
SyntaxError: Missing parentheses in call to 'print'
[liveuser@localhost ~]$

(In reply to Moez Roy from comment #22)
> (In reply to Vít Ondruch from comment #21)
> > (In reply to Jakub Filak from comment #19)
> > > (In reply to Moez Roy from comment #18)
> > > > gnome-abrt no longer works in Rawhide.
> > > 
> > > Can you please do the test mentioned in comment #12?
> > 
> > $ ./py.py 
> > Segmentation fault (core dumped)
> 
> Same here:
> 
> [liveuser@localhost ~]$ python2 test_display.py 
> Segmentation fault (core dumped)
> 
> [liveuser@localhost ~]$ python3 test_display.py 
>   File "test_display.py", line 18
>     print "It works!"
>                     ^
> SyntaxError: Missing parentheses in call to 'print'
> [liveuser@localhost ~]$

print ("It works!")

[liveuser@localhost ~]$ python3 test_display_p3.py 
Segmentation fault (core dumped)
[liveuser@localhost ~]$

I am re-assigning this report from gnome-abrt to libX11 because the crash is reproducible with a minimal script which simply opens and closes X display.

Created attachment 1033663 [details]
open and close X in C

I've created a minimal example (open and close X display) in C and it works on my rawhide. I attached the example. You can compile it by running "gcc openX.c -L/usr/X11R6/lib -lX11 -o openX"


So the issue is probably in Python.

(In reply to Matej Habrnal from comment #25)
> Created attachment 1033663 [details]
> open and close X in C
> 
> I've created a minimal example (open and close X display) in C and it works
> on my rawhide. I attached the example. You can compile it by running "gcc
> openX.c -L/usr/X11R6/lib -lX11 -o openX"
> 
> 
> So the issue is probably in Python.

Thank you for the C example! I think the root cause of the crash is in the fact that we should not use libX11 through "cdll.LoadLibrary()". So, please replace the python implementation with your C implementation in gnome-abrt.

I've created a pull request which fixes the issue: https://github.com/abrt/gnome-abrt/pull/134 .

Can you update gnome-abrt in rawhide?

Thanks.