.
Thread 4 (Thread 0xb66ffb70 (LWP 1551)):
#0  0x00e73416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00ce1a8b in read () at ../sysdeps/unix/syscall-template.S:82
No locals.
#2  0x009e8adb in read (__nbytes=128, __buf=0xb66ff24c, __fd=<optimized out>) at /usr/include/i386-linux-gnu/bits/unistd.h:45
No locals.
#3  unix_signal_helper_thread (data=0x0) at /build/buildd/glib2.0-2.29.16/./glib/gmain.c:4546
        i = <optimized out>
        bytes_read = -512
        b = '\000' <repeats 96 times>, "\v\372\315", '\000' <repeats 13 times>"\364, \237\022\000\030\tp\266\217\315\315\000 $\252"
        sigterm_received = 0
        sigint_received = 0
        sighup_received = 0
#4  0x00a13e34 in g_thread_create_proxy (data=0xb6700918) at /build/buildd/glib2.0-2.29.16/./glib/gthread.c:1962
        thread = 0xb6700918
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#5  0x00cdad31 in start_thread (arg=0xb66ffb70) at pthread_create.c:304
        __res = <optimized out>
        pd = 0xb66ffb70
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {13549556, 0, 4001536, -1234176968, -10639144, -1142879307}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x0082e0ae in revoke (file=0x0) at revoke.c:27
No locals.
#7  0xb66ffb70 in ?? ()
No symbol table info available.
Backtrace stopped: Not enough registers or memory available to unwind further
.
Thread 3 (Thread 0xb7808b70 (LWP 1548)):
#0  0x00e73416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00cdee04 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:236
No locals.
#2  0x001270a1 in g_cond_timed_wait_posix_impl (cond=0xb67005f8, entered_mutex=0x8e07298, abs_time=0xb78082c8) at /build/buildd/glib2.0-2.29.16/./gthread/gthread-posix.c:242
        result = <optimized out>
        end_time = {tv_sec = 1313755268, tv_nsec = 950228000}
        timed_out = <optimized out>
        __PRETTY_FUNCTION__ = "g_cond_timed_wait_posix_impl"
#3  0x009be430 in g_async_queue_pop_intern_unlocked (queue=0x8e07310, try=<optimized out>, end_time=0xb78082c8) at /build/buildd/glib2.0-2.29.16/./glib/gasyncqueue.c:415
        retval = <optimized out>
        __PRETTY_FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#4  0x00a162ab in g_thread_pool_wait_for_new_task (pool=0x8e057c8) at /build/buildd/glib2.0-2.29.16/./glib/gthreadpool.c:274
        end_time = {tv_sec = 1313755268, tv_usec = 950228}
        task = <optimized out>
#5  g_thread_pool_thread_proxy (data=0x8e057c8) at /build/buildd/glib2.0-2.29.16/./glib/gthreadpool.c:308
        task = 0xb78082c8
        pool = 0x8e057c8
#6  0x00a13e34 in g_thread_create_proxy (data=0x8e07508) at /build/buildd/glib2.0-2.29.16/./glib/gthread.c:1962
        thread = 0x8e07508
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#7  0x00cdad31 in start_thread (arg=0xb7808b70) at pthread_create.c:304
        __res = <optimized out>
        pd = 0xb7808b70
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {13549556, 0, 4001536, -1216314312, 566077659, -1142879307}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x0082e0ae in revoke (file=0x0) at revoke.c:27
No locals.
#9  0xb7808b70 in ?? ()
No symbol table info available.
Backtrace stopped: Not enough registers or memory available to unwind further
.
Thread 2 (Thread 0xb7007b70 (LWP 1549)):
#0  0x00e73416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x0081f3ee in fchownat (fd=7, file=0x1 <Address 0x1 out of bounds>, owner=12, group=1, flag=0) at ../sysdeps/unix/sysv/linux/i386/fchownat.c:93
        result = <optimized out>
        buf = 0x0
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
.
Thread 1 (Thread 0xb7809720 (LWP 1547)):
#0  XFlush (dpy=0x0) at ../../src/Flush.c:38
No locals.
#1  0x08049700 in ensure_a11y_bus (app=<optimized out>) at at-spi-bus-launcher.c:193
        display = 0x0
        pid = 1550
        argv = {0x8049a33 "/bin/dbus-daemon", 0xb67005c0 "--config-file=/etc/at-spi2/accessibility.conf", 0x8049a44 "--nofork", 0x8049a4d "--print-address", 0x8049a5d "3", 0x0}
        addr_buf = "unix:abstract=/tmp/dbus-ReExptE2yO,guid=8d20c1c07d2158f6fe0ad2bc0000150e\n\000\000\000\345\322|\000=\201\354\000\377\002\000\000\000\000\000\000\210\000\000\000\000\000\000\002\020\036\321\277\071\003\002\000\070\003\002\000\364O\215\000H\fp\266\020\000p\266\000\001\000\000\267\352|\000\210\000\000\000\b\001\000\000ck\000\000>\036\321\277@\fp\266\b\001\000\000\210\000\000\000\364\037\252\000\000\001\000\000H\fp\266\200\000\000\000c+\237\000H\fp\266\000\001\000\000\377\377\377\377\000\000\000\000\000\a\000\000\000\000\000\000\364\037\252\000\071\064\237\000H\fp\266\000\001", '\000' <repeats 14 times>"\364, \037\252\000 \313\337\b\264\065\226"...
        error = 0x0
#2  0x0804989f in handle_method_call (connection=0x8e07800, sender=0x8e0f390 ":1.5", object_path=0x8e12658 "/org/a11y/bus", interface_name=0x8e01a80 "org.a11y.Bus", method_name=0x8e127a8 "GetAddress", parameters=0x8e10790, invocation=0x8e12920, user_data=0x8e02800) at at-spi-bus-launcher.c:219
        app = 0x8e02800
#3  0x0022932a in call_in_idle_cb (user_data=0x8e12920) at /build/buildd/glib2.0-2.29.16/./gio/gdbusconnection.c:4440
        invocation = 0x8e12920
        vtable = <optimized out>
        registration_id = <optimized out>
        subtree_registration_id = <optimized out>
        __PRETTY_FUNCTION__ = "call_in_idle_cb"
#4  0x009e86e0 in g_idle_dispatch (source=0x8e12670, callback=0x2291d0 <call_in_idle_cb>, user_data=0x8e12920) at /build/buildd/glib2.0-2.29.16/./glib/gmain.c:4780
No locals.
#5  0x009ec81f in g_main_dispatch (context=0x8e03c38) at /build/buildd/glib2.0-2.29.16/./glib/gmain.c:2439
        dispatch = 0x9e86c0 <g_idle_dispatch>
        was_in_call = 0
        user_data = 0x8e12920
        callback = 0x2291d0 <call_in_idle_cb>
        cb_funcs = 0xaa235c
        cb_data = 0x8e126e8
        current_source_link = {data = 0x8e12670, next = 0x0}
        need_destroy = <optimized out>
        source = 0x8e12670
        current = 0x8dfc858
        i = <optimized out>
#6  g_main_context_dispatch (context=0x8e03c38) at /build/buildd/glib2.0-2.29.16/./glib/gmain.c:3008
No locals.
#7  0x009ecf50 in g_main_context_iterate (context=0x8e03c38, block=10467600, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.29.16/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = 25000
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x8e08038
#8  0x009ed55b in g_main_loop_run (loop=0x8dfc6c8) at /build/buildd/glib2.0-2.29.16/./glib/gmain.c:3294
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#9  0x08049117 in main (argc=1, argv=0xbfd12894) at at-spi-bus-launcher.c:408
        __PRETTY_FUNCTION__ = "main"