.
Thread 4 (Thread 0xb57ffb40 (LWP 1610)):
#0  0xb775e424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74bf160 in __GI___poll (fds=fds@entry=0xba6ed68, nfds=nfds@entry=9, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb713887b in g_poll (fds=0xba6ed68, nfds=9, timeout=-1) at /build/buildd/glib2.0-2.33.12/./glib/gpoll.c:132
No locals.
#3  0xb7129da0 in g_main_context_poll (n_fds=9, fds=0xba6ed68, timeout=<optimized out>, context=0xb580a0d8, priority=<optimized out>) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3584
        poll_func = <optimized out>
#4  g_main_context_iterate (context=0xb580a0d8, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3285
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 9
        allocated_nfds = <optimized out>
        fds = 0xba6ed68
#5  0xb712a27b in g_main_loop_run (loop=0xb580a0a0) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3484
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0xb62f163a in gdbus_shared_thread_func (user_data=0xb580a0c0) at /build/buildd/glib2.0-2.33.12/./gio/gdbusprivate.c:277
        data = 0xb580a0c0
#7  0xb714f693 in g_thread_proxy (data=0xb5803e90) at /build/buildd/glib2.0-2.33.12/./glib/gthread.c:797
        thread = 0xb5803e90
#8  0xb73ced4c in start_thread (arg=0xb57ffb40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb57ffb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1220673536, 0, 4001536, -1249905688, -1419209197, 760524311}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb74cd8ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 3 (Thread 0xb616bb40 (LWP 1609)):
#0  0xb775e424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74bf160 in __GI___poll (fds=fds@entry=0xb5800c68, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb713887b in g_poll (fds=0xb5800c68, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.33.12/./glib/gpoll.c:132
No locals.
#3  0xb7129da0 in g_main_context_poll (n_fds=1, fds=0xb5800c68, timeout=<optimized out>, context=0x9c37d08, priority=<optimized out>) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3584
        poll_func = <optimized out>
#4  g_main_context_iterate (context=context@entry=0x9c37d08, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3285
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb5800c68
#5  0xb7129f01 in g_main_context_iteration (context=context@entry=0x9c37d08, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3351
        retval = <optimized out>
#6  0xb67858b0 in dconf_gdbus_worker_thread (user_data=0x9c37d08) at dconf-gdbus-thread.c:81
        context = 0x9c37d08
#7  0xb714f693 in g_thread_proxy (data=0x9c0cbb0) at /build/buildd/glib2.0-2.33.12/./glib/gthread.c:797
        thread = 0x9c0cbb0
#8  0xb73ced4c in start_thread (arg=0xb616bb40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb616bb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1220673536, 0, 4001536, -1240026136, 2045285909, 760524311}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb74cd8ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 2 (Thread 0xb6fb4b40 (LWP 1608)):
#0  0xb775e424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74bf160 in __GI___poll (fds=fds@entry=0xb6600478, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = -516
        result = <optimized out>
#2  0xb713887b in g_poll (fds=0xb6600478, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.33.12/./glib/gpoll.c:132
No locals.
#3  0xb7129da0 in g_main_context_poll (n_fds=1, fds=0xb6600478, timeout=<optimized out>, context=0x9c0c780, priority=<optimized out>) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3584
        poll_func = <optimized out>
#4  g_main_context_iterate (context=context@entry=0x9c0c780, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3285
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb6600478
#5  0xb7129f01 in g_main_context_iteration (context=0x9c0c780, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:3351
        retval = <optimized out>
#6  0xb7129f6e in glib_worker_main (data=0x0) at /build/buildd/glib2.0-2.33.12/./glib/gmain.c:5028
No locals.
#7  0xb714f693 in g_thread_proxy (data=0x9c0ca00) at /build/buildd/glib2.0-2.33.12/./glib/gthread.c:797
        thread = 0x9c0ca00
#8  0xb73ced4c in start_thread (arg=0xb6fb4b40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb6fb4b40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1220673536, 0, 4001536, -1225047064, -1576495596, 760524311}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0xb74cd8ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 1 (Thread 0xb6fb6980 (LWP 1606)):
#0  __memmove_ssse3 () at ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S:2243
No locals.
#1  0xb4c6c000 in ?? () from /tmp/tmptUhQE9/usr/lib/i386-linux-gnu/dri/swrast_dri.so
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)