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[Bug 706918] Re: compiz crashed with SIGSEGV in RegexExp::evaluate()

To: compiz@xxxxxxxxxxxxxxxxxxx
From: Michael Milligan <milli@xxxxxxxxxx>
Date: Mon, 24 Jan 2011 17:42:00 -0000
Reply-to: Bug 706918 <706918@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Having the same problem, but I cannot find a reproducable set of
steps... yet.  Compiz segfaults in libregex library:

Versions, from natty:

$ COLUMNS=160 dpkg -l | grep compiz
ii  compiz                             1:0.9.2.1+glibmainloop4-0ubuntu3   OpenGL window and compositing manager
ii  compiz-core                        1:0.9.2.1+glibmainloop4-0ubuntu3   OpenGL window and compositing manager
ii  compiz-dev                         1:0.9.2.1+glibmainloop4-0ubuntu3   OpenGL window and compositing manager - development files
ii  compiz-fusion-plugins-extra        0.9.2.1-0ubuntu2                   Collection of extra plugins from OpenCompositing for Compiz
ii  compiz-fusion-plugins-main         0.9.2.1-0ubuntu7                   Compiz Fusion plugins - main collection
ii  compiz-gnome                       1:0.9.2.1+glibmainloop4-0ubuntu3   OpenGL window and compositing manager - GNOME window decorator
ii  compiz-plugins                     1:0.9.2.1+glibmainloop4-0ubuntu3   OpenGL window and compositing manager - plugins
ii  compizconfig-backend-gconf         0.9.2.1git101213-0ubuntu1          Compiz Fusion configuration system - gconf backend
ii  compizconfig-settings-manager      0.9.2.1-0ubuntu1                   Compiz configuration settings manager
ii  libcompizconfig0                   0.9.2.1git101125-0ubuntu4          Settings library for plugins - OpenCompositing Project
ii  libcompizconfig0-dev               0.9.2.1git101125-0ubuntu4          Development file for plugin settings - OpenCompositing Project
ii  python-compizconfig                0.9.2.1-0ubuntu2                   Compizconfig bindings for python


GDB backtrace...

$ gdb --args compiz --replace
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/compiz...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/compiz --replace
[Thread debugging using libthread_db enabled]
No value set for `/apps/compiz-1/general/allscreens/options/active_plugins'
[New Thread 0x7ffff1e1a710 (LWP 18056)]
Backend     : gconf
Integration : true
Profile     : default
Adding plugins
Initializing core options...done
Initializing bailer options...done
Initializing detection options...done
Initializing composite options...done
Initializing opengl options...done
Initializing decor options...done
/usr/bin/compiz (core) - Warn: Value type is not yet set
Initializing resize options...done
Initializing imgjpeg options...done
Initializing place options...done
Initializing snap options...done
Initializing session options...done
Initializing move options...done
Initializing mousepoll options...done
Initializing imgsvg options...done
Initializing gnomecompat options...done
Initializing winrules options...done
Initializing resizeinfo options...done
Initializing animation options...done
Initializing ring options...done
Initializing wall options...done
Initializing workarounds options...done
Initializing animationaddon options...done
Initializing fade options...done
Initializing expo options...done
Initializing ezoom options...done
Initializing scale options...done
Initializing scaleaddon options...done
Setting Update "shadow_radius"
Setting Update "shadow_x_offset"
Setting Update "command"
Setting Update "mipmap"
Setting Update "decoration_match"
Setting Update "shadow_match"
Setting Update "mode"
Setting Update "position_matches"
Setting Update "position_x_values"
Setting Update "position_y_values"
Setting Update "position_constrain_workarea"

Setting Update "above_match"
Setting Update "fade_time"
Setting Update "always_show"
Setting Update "close_effects"
Setting Update "close_durations"
Setting Update "shade_durations"
Setting Update "glide2_away_position"
Setting Update "prev_key"
Setting Update "speed"
Setting Update "timestep"
Setting Update "thumb_width"
Setting Update "thumb_height"
Setting Update "explode_gridx"
Setting Update "explode_gridy"
Setting Update "explode_spokes"
Setting Update "explode_tiers"
Setting Update "expo_edge"
Setting Update "zoom_time"
Setting Update "vp_distance"
Setting Update "hide_docks"
Setting Update "mipmaps"
Setting Update "multioutput_mode"
Setting Update "ground_size"
Setting Update "zoom_in_button"
Setting Update "zoom_out_button"
Setting Update "zoom_mode"
Setting Update "scale_mouse_static"
Setting Update "restrain_mouse"
Setting Update "follow_focus"
Setting Update "speed"
Setting Update "overlay_icon"
Setting Update "initiate_edge"
Setting Update "title_bold"
Setting Update "title_size"
Setting Update "border_size"
Setting Update "layout_mode"
Setting Update "natural_precision"
constraining to 0
constraining to 0
constraining to 0
constraining to 0

Program received signal SIGSEGV, Segmentation fault.
0x00007fffeca991c5 in RegexExp::evaluate(CompWindow*) () from /usr/lib/compiz/libregex.so
(gdb) bt

#0  0x00007fffeca991c5 in RegexExp::evaluate(CompWindow*) () from /usr/lib/compiz/libregex.so
#1  0x000000000044758f in ?? ()
#2  0x000000000044754b in ?? ()
#3  0x00007fffedb66904 in DecorWindow::update(bool) () from /usr/lib/compiz/libdecor.so
#4  0x00007fffedb69416 in DecorWindow::DecorWindow(CompWindow*) () from /usr/lib/compiz/libdecor.so
#5  0x00007fffedb6c8f9 in CompPlugin::VTableForScreenAndWindow<DecorScreen, DecorWindow>::initWindow(CompWindow*) () from /usr/lib/compiz/libdecor.so
#6  0x000000000044fbf5 in CompPlugin::windowInitPlugins(CompWindow*) ()
#7  0x0000000000441499 in CompWindow::CompWindow(unsigned long, unsigned long) ()
#8  0x000000000044e8cd in CompScreen::handleEvent(_XEvent*) ()
#9  0x00007ffff07b8ef4 in PrivateCompositeScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libcomposite.so
#10 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#11 0x00007ffff018cc3f in PrivateGLScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libopengl.so
#12 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#13 0x00007fffedb67d53 in DecorScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libdecor.so
#14 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#15 0x00007fffed715e86 in ResizeScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libresize.so
#16 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#17 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#18 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#19 0x00007fffecca9220 in SessionScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libsession.so
#20 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#21 0x00007fffeca9934f in RegexScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libregex.so
#22 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#23 0x00007fffec67d60c in MoveScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libmove.so
#24 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#25 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#26 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#27 0x00007fffe8d8a03d in WorkaroundsScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libworkarounds.so
#28 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#29 0x00007fffe8927521 in FadeScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libfade.so
#30 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#31 0x00007fffe8041177 in PrivateScaleScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libscale.so
#32 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#33 0x00007fffe7e19dfa in ScaleAddonScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libscaleaddon.so
#34 0x000000000044db2b in CompScreen::handleEvent(_XEvent*) ()
#35 0x000000000042de1b in PrivateScreen::processEvents() ()
#36 0x0000000000454548 in CompEventSource::callback() ()
#37 0x00007ffff6e438ef in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/libglibmm-2.4.so.1
#38 0x00007ffff4dffd0d in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#39 0x00007ffff4e004f8 in ?? () from /lib/libglib-2.0.so.0
#40 0x00007ffff4e00b3a in g_main_loop_run () from /lib/libglib-2.0.so.0
#41 0x0000000000429b8a in CompScreen::eventLoop() ()
---Type <return> to continue, or q <return> to quit---
#42 0x0000000000422c50 in main ()
(gdb) cont
Continuing.
[Thread 0x7ffff1e1a710 (LWP 18056) exited]

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) q

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https://bugs.launchpad.net/bugs/706918

Title:
  compiz crashed with SIGSEGV in RegexExp::evaluate()