.
Thread 2 (Thread 1905):
#0  0x00007ff8cbb73f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007ff8cceaf104 in g_main_context_poll (context=0x1e2d420, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.5/./glib/gmain.c:3404
        poll_func = 0x7ff8ccebf130 <g_poll>
#2  g_main_context_iterate (context=0x1e2d420, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.5/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <value optimized out>
        nfds = 1
        allocated_nfds = <value optimized out>
        fds = 0x1e2d3e0
#3  0x00007ff8cceaf9f2 in g_main_loop_run (loop=0x1e2d400) at /build/buildd/glib2.0-2.28.5/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007ff8cded9d44 in gdbus_shared_thread_func (data=<value optimized out>) at /build/buildd/glib2.0-2.28.5/./gio/gdbusprivate.c:276
No locals.
#5  0x00007ff8cced63e4 in g_thread_create_proxy (data=0x1e2d500) at /build/buildd/glib2.0-2.28.5/./glib/gthread.c:1897
        thread = 0x1e2d500
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007ff8cc7dad8c in start_thread (arg=0x7ff8c93eb700) at pthread_create.c:304
        pd = 0x7ff8c93eb700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140706504947456, 3111245659519113654, 140735857580352, 140706504948160, 0, 3, -3108381991754737226, -3108392445722175050}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ff8cbb8104d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 1890):
#0  0x00007ff8cbaced05 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <value optimized out>
        selftid = 1890
#1  0x00007ff8cbad2ab6 in abort () at abort.c:92
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x3e, sa_sigaction = 0x3e}, sa_mask = {__val = {140706546902670, 140706559451120, 140706546894554, 140735857582464, 140706545932386, 206158430232, 140735857582480, 140735857582256, 140706545843572, 206158430256, 140735857582504, 61127424, 132640, 61117392, 2338042681683304287, 140735857584874}}, sa_flags = -876689702, sa_restorer = 0x7ff8cc7e66ae}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007ff8cbac77c5 in __assert_fail (assertion=0x7ff8cc7e5f1c "mutex->__data.__owner == 0", file=<value optimized out>, line=62, function=<value optimized out>) at assert.c:81
        buf = 0x3a4bb00 "compiz: pthread_mutex_lock.c:62: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed.\n"
#3  0x00007ff8cc7dd40d in __pthread_mutex_lock (mutex=<value optimized out>) at pthread_mutex_lock.c:62
        __PRETTY_FUNCTION__ = "__pthread_mutex_lock"
        type = <value optimized out>
        id = <value optimized out>
#4  0x00007ff8cceaa899 in g_source_unref_internal (source=0x3a18410, context=0x3a1e4f0, have_lock=0) at /build/buildd/glib2.0-2.28.5/./glib/gmain.c:1671
        old_cb_data = 0x0
        old_cb_funcs = 0x0
        __PRETTY_FUNCTION__ = "g_source_unref_internal"
#5  0x000000000042cee8 in ~RefPtr (this=0x1de7ab0, __in_chrg=<value optimized out>) at /usr/include/glibmm-2.4/glibmm/refptr.h:207
No locals.
#6  PrivateScreen::~PrivateScreen (this=0x1de7ab0, __in_chrg=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/screen.cpp:4816
No locals.
#7  0x000000000042d169 in PrivateScreen::~PrivateScreen (this=0x1de7ab0, __in_chrg=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/screen.cpp:4818
No locals.
#8  0x000000000042b215 in CompScreen::~CompScreen (this=0x1de79f0, __in_chrg=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/screen.cpp:4721
        p = <value optimized out>
#9  0x000000000042b349 in CompScreen::~CompScreen (this=0x1de79f0, __in_chrg=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/screen.cpp:4724
No locals.
#10 0x0000000000422989 in CompManager::fini (this=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/main.cpp:259
No locals.
#11 0x0000000000423188 in main (argc=<value optimized out>, argv=0x7fff9ecc6438) at /build/buildd/compiz-0.9.4git20110322/src/main.cpp:287
        manager = {plugins = {<std::_List_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {_M_impl = {<std::allocator<std::_List_node<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {<__gnu_cxx::new_allocator<std::_List_node<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >> = {<No data fields>}, <No data fields>}, _M_node = {_M_next = 0x1de79b0, _M_prev = 0x1de79b0}}}, <No data fields>}, disableSm = false, clientId = 0x1e65210 "10eae4f4dbd16940ea130204419999689000000018280045", displayName = 0x0}