compiz crashes in add_match_done (dconf)

[David Barth]

Binary package hint: compiz

When trying to start unity from the command line, compiz is affected by what is probably a race condition similar to the gconf one. It fails in a dconf call at add_match_done():

#0 0x02a12bb3 in add_match_done () from /usr/lib/gio/modules/libdconfsettings.so
#1 0x02a127c8 in dconf_settings_backend_send () from /usr/lib/gio/modules/libdconfsettings.so
#2 0x02a12ade in dconf_settings_backend_subscribe_context_func () from /usr/lib/gio/modules/libdconfsettings.so
#3 0x0062e471 in g_idle_dispatch () from /lib/libglib-2.0.so.0
#4 0x00632c28 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#5 0x006333f0 in g_main_context_iterate.clone.5 () from /lib/libglib-2.0.so.0
#6 0x00633aab in g_main_loop_run () from /lib/libglib-2.0.so.0
#7 0x02a121ea in dconf_context_thread () from /usr/lib/gio/modules/libdconfsettings.so
#8 0x0065c66f in g_thread_create_proxy () from /lib/libglib-2.0.so.0
#9 0x002fee79 in start_thread () from /lib/libpthread.so.0
#10 0x004ee4ee in clone () from /lib/libc.so.6

[David Barth (dbarth)]

Hey Ryan, there seems to be something strange happening in dconf when called from Compiz.

[Allison Karlitskaya (desrt)]

I think that maybe you're seeing this bug:

https://bugzilla.gnome.org/show_bug.cgi?id=639523

That was fixed on the 14th and released into a tarball on the 17th. Michael packaged it on the 18th, and it was probably built and in the archive by the 19th. Your report comes 1 day later. Is it possible that you hadn't upgraded (or restarted) since then before reporting this bug?

[Allison Karlitskaya (desrt)]

Actually, I think this may be a different bug.

The only way that it is possible to see the trace there (add_match_done called directly from dconf_settings_backend_send is when there is an error connecting to DBus).

I've fixed this upstream. Michael is looking at cherry-picking the fix as a vendor patch for now.

[Sebastien Bacher (seb128)]

d-conf (0.7.1-0ubuntu3) natty; urgency=low

  * debian/patches/fix-crash-if-cant-connect.patch:
    - Backport patch from upstream trunk. Fixes compiz crash LP: #705347