synapse segfaults on 12.04

[Roland (Rolandixor) Taylor]

SRU explanation :
[Impact] This bug cause a crash on start, when some weird desktop files are installed.

[Development Fix] Patch from upstream, already uploaded on quantal, modified to apply cleanly.

[Stable Fix] debdiff will be attached to the bug report.

[Test Case] Unable to provide a test case, the exact combination of the desktop files which trigger the bug is unknown. However, people affected by the bug may confirm that the patch fix the problem.

[Regression Potential] I can't see any regression, since the patch just add an exception to avoid the segfault.

packages available for testing : https://launchpad.net/~gilir/+archive/updates

Original bug report :
I'm not sure what is causing this, but here's what output I could collect:

[18:24:57.215163 Info] Starting up...
Gtk-Message: Failed to load module "rgba"
[18:24:57.365732 Info] [UILauncher] Binding activation to <Control>space
[18:24:57.365804 GtkHotkey-Debug] Listener Type: GtkHotkeyX11Listener
[18:24:57.413240 Info] [GuiViewDefault] Screen is composited.
[18:24:57.413512 Info] [GuiViewDefault] Using ibus input method.
[18:24:57.640634 Warning] [DesktopFileInfo] Not Application-type desktop entry
[18:24:57.676518 Warning] [DesktopFileInfo] Not Application-type desktop entry
[18:24:57.734811 Warning] [DesktopFileInfo] Key file does not have key 'Type'
[18:24:57.738896 Warning] [DesktopFileInfo] Key file does not have key 'Type'
[18:24:57.762538 Warning] desktop-file-service.vala:95: Pantheon is not understood
[18:24:57.768000 Warning] [DesktopFileInfo] Not Application-type desktop entry
[18:24:57.914608 Warning] [DesktopFileInfo] Key file contains key 'Terminal' which has a value that cannot be interpreted.
[18:24:57.955590 Warning] [DesktopFileInfo] Key file contains key 'Hidden' which has a value that cannot be interpreted.
[18:24:58.110656 GLib-Critical] g_regex_replace_eval: assertion `string != NULL' failed
[18:24:58.110704 Critical] string_strip: assertion `self != NULL' failed
Segmentation fault (core dumped)

[Peng (pengwg)]

I have the same error message in Oneiric once I updated to the 0.2.10 version using the synapse-core ppa.

[Michal Hruby (mhr3)]

Could you please install synapse-dbg package, run `gdb -batch -ex run -ex bt synapse` in terminal and paste its output here?

[Magnus Vilhelm Persson (magnusp-snm)]

+1 one on Oneric, after update.

$ gdb -batch -ex run -ex bt synapse
[Thread debugging using libthread_db enabled]
[09:31:03.982883 Info] Starting up...
[New Thread 0xb6926b70 (LWP 3563)]
[New Thread 0xb5fffb70 (LWP 3564)]
[New Thread 0xb578fb70 (LWP 3565)]
[09:31:04.221358 Info] [UILauncher] Binding activation to <Control>space
[09:31:04.221446 GtkHotkey-Debug] Listener Type: GtkHotkeyX11Listener
[09:31:04.261306 Info] [GuiViewVirgilio] Screen is composited.
[09:31:04.261531 Info] [GuiViewVirgilio] Using ibus input method.
[09:31:04.460942 Warning] [DesktopFileInfo] Key file does not have key 'Type'
[09:31:04.463971 Warning] [DesktopFileInfo] Key file contains key 'Terminal' which has value that cannot be interpreted.
[09:31:04.553249 Warning] [DesktopFileInfo] Key file contains key 'Terminal' which has value that cannot be interpreted.
[09:31:04.556797 GLib-Critical] g_regex_replace_eval: assertion `string != NULL' failed
[09:31:04.556822 Critical] string_strip: assertion `self != NULL' failed

Program received signal SIGSEGV, Segmentation fault.
0xb766a99a in g_str_hash () from /lib/i386-linux-gnu/libglib-2.0.so.0
#0 0xb766a99a in g_str_hash () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1 0xb7f956c7 in ?? () from /usr/lib/libgee.so.2
#2 0xb7f959d3 in ?? () from /usr/lib/libgee.so.2
#3 0xb7f88237 in gee_abstract_map_get () from /usr/lib/libgee.so.2
#4 0xb7f9d24b in gee_map_get () from /usr/lib/libgee.so.2
#5 0x0809d72f in synapse_desktop_file_service_create_indices (self=0x824c998) at desktop-file-service.c:2802
#6 synapse_desktop_file_service_load_all_desktop_files_co (_data_=<optimized out>) at desktop-file-service.c:2288
#7 0xb77e6aef in g_simple_async_result_complete () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#8 0x08099d35 in synapse_desktop_file_service_load_mime_parents_from_file_co (_data_=0x823f4f0) at desktop-file-service.c:3110
#9 0xb77e6aef in g_simple_async_result_complete () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#10 0xb77b21a5 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#11 0xb77b2423 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#12 0xb77a8fab in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#13 0xb77e6aef in g_simple_async_result_complete () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#14 0xb77a9387 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#15 0xb77d5651 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#16 0xb77e6aef in g_simple_async_result_complete () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#17 0xb77e6b73 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#18 0xb7645110 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#19 0xb764925f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#20 0xb7649990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#21 0xb7649f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#22 0xb7c04fcf in gtk_main () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#23 0x08057be8 in synapse_ui_launcher_main (argv=0xbfffe8a4, argv_length1=1) at synapse-main.c:1035
#24 0x080565c0 in main (argc=1, argv=0xbfffe8a4) at synapse-main.c:1069

[Dept.Técnico (Extreme Micro S.L.) (tecnicos-extreme-micro)]

+1 on oneiric
$ gdb -batch -ex run -ex bt synapse

[Depuración de hilo usando libthread_db enabled]
[18:20:29.965057 Info] Starting up...
/home/lab1/.gtkrc-2.0:1: No se ha podido encontrar el archivo «include»: «.gtkrc-2.0-gnome-color-chooser»
[Nuevo Thread 0x7fffec656700 (LWP 3976)]
[Nuevo Thread 0x7fffebe55700 (LWP 3977)]
[Nuevo Thread 0x7fffeb229700 (LWP 3978)]
[18:20:30.180711 Info] [UILauncher] Binding activation to <Super>space
[18:20:30.180783 GtkHotkey-Debug] Listener Type: GtkHotkeyX11Listener
[18:20:30.219448 Info] [GuiViewDefault] Screen is composited.
[18:20:30.219751 Info] [GuiViewDefault] Using ibus input method.
[18:20:30.464466 Warning] [DesktopFileInfo] El archivo de claves no tiene la clave «Type»
[18:20:30.492630 Warning] [DesktopFileInfo] El archivo de claves contiene la clave «Terminal» que tiene un valor que no puede interpretarse.
[18:20:30.645127 Warning] [DesktopFileInfo] Unable to create AppInfo
[18:20:30.663973 Warning] [DesktopFileInfo] Unable to create AppInfo
[18:20:30.689658 Warning] desktop-file-service.vala:448: El archivo de claves no empieza por un grupo
[18:20:30.690849 Warning] [DesktopFileInfo] Unable to create AppInfo
[18:20:30.692565 GLib-Critical] g_regex_replace_eval: assertion `string != NULL' failed
[18:20:30.692596 Critical] string_strip: assertion `self != NULL' failed

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff52c5b30 in g_str_hash () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#0 0x00007ffff52c5b30 in g_str_hash () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007ffff79981ff in ?? () from /usr/lib/libgee.so.2
#2 0x00007ffff7998539 in ?? () from /usr/lib/libgee.so.2
#3 0x0000000000453e0e in synapse_desktop_file_service_create_indices (self=0x8fe730) at desktop-file-service.c:2802
#4 synapse_desktop_file_service_load_all_desktop_files_co (_data_=0x76a860) at desktop-file-service.c:2288
#5 0x00007ffff5a2dc17 in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6 0x000000000045086d in synapse_desktop_file_service_load_mime_parents_from_file_co (_data_=0x772000) at desktop-file-service.c:3110
#7 0x00007ffff5a2dc17 in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#8 0x00007ffff59fc82a in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#9 0x00007ffff59fca42 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#10 0x00007ffff59f4341 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#11 0x00007ffff5a2dc17 in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#12 0x00007ffff59f468d in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#13 0x00007ffff5a1db89 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#14 0x00007ffff5a2dc17 in g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#15 0x00007ffff5a2dca8 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#16 0x00007ffff52a5a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007ffff52a6258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007ffff52a6792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x...

[Michal Hruby (mhr3)]

Should be fixed in ppa:synapse-core/testing

[Sebastián García Rojas (sebagr)]

It's been almost a month since the fix was committed, but I see no activity here. This bug is preventing me from using Synapse on Ubuntu 11.10. I'm afraid I'll have to go back to Gnome-do until this fix is released :(

[Launchpad Janitor (janitor)]

This bug was fixed in the package synapse - 0.2.10-2ubuntu1

---------------
synapse (0.2.10-2ubuntu1) quantal; urgency=low

  * Merge from Debian unstable (LP: #965564).
  * Ubuntu remaining changes:
  * debian/control:
   - Build-depends on libappindicator-dev.

synapse (0.2.10-2) unstable; urgency=low

  * debian/patches:
   - 91_check_null_exec.patch: From upstream, don't crash on empty Exec field
     (Closes: #668972)

synapse (0.2.10-1) unstable; urgency=low

  * New upstream release.
  * debian/patches:
   - 90_check_xdg_current_desktop.patch: From upstream, detect XFCE system
     applications (Closes: #659316)
  * debian/control:
   - Update build-depends on vala 0.14 (Closes: #663322)
   - Update to Standards-Version 3.9.3 (no change needed).
  * debian/watch:
   - Update launchpad link.
  * debian/copyright:
   - Update to copyright-format 1.0.
 -- Julien Lavergne <email address hidden> Fri, 25 May 2012 23:16:49 +0200

[Clint Byrum (clint-fewbar)]

Hello Roland, or anyone else affected,

Accepted synapse into precise-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Steve Langasek (vorlon)]

A package that includes this fix has now been awaiting verification in precise-proposed for over a month. If you're able to reproduce this bug, please test the package in precise-proposed and let us know whether it fixes the problem for you, so that we can publish the fix for all users.

[Stéphane Graber (stgraber)]

Quickly tested here, looks good, no obvious regression.

[Launchpad Janitor (janitor)]

This bug was fixed in the package synapse - 0.2.8.2-1ubuntu1.1

---------------
synapse (0.2.8.2-1ubuntu1.1) precise-proposed; urgency=low

  * debian/patches:
   - 91_check_null_exec.patch: From upstream, don't crash on empty Exec field
     (LP: #965564)
 -- Julien Lavergne <email address hidden> Mon, 28 May 2012 17:10:15 +0200

[gabriel smith (gabriel-smith01)]

Still experiencing this issue in Synapse 0.2.10

[gabriel smith (gabriel-smith01)]

The above comment (#13) was using Synapse (0.2.10) from ppa core. I downgraded to the distro release 0.2.8 and am no longer having this issue