.
Thread 4 (Thread 0xb57ffb40 (LWP 1566)):
#0  0xb7706424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7469160 in __GI___poll (fds=fds@entry=0xbef7af0, 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  0xb70e3dbb in g_poll (fds=0xbef7af0, nfds=9, timeout=-1) at /build/buildd/glib2.0-2.33.10/./glib/gpoll.c:132
No locals.
#3  0xb70d5360 in g_main_context_poll (n_fds=9, fds=0xbef7af0, timeout=<optimized out>, context=0xb580a0d8, priority=<optimized out>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3576
        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/glib2.0-2.33.10/./glib/gmain.c:3277
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 9
        allocated_nfds = <optimized out>
        fds = 0xbef7af0
#5  0xb70d583b in g_main_loop_run (loop=0xb580a0a0) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3476
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#6  0xb62a0dfa in gdbus_shared_thread_func (user_data=0xb580a0c0) at /build/buildd/glib2.0-2.33.10/./gio/gdbusprivate.c:277
        data = 0xb580a0c0
#7  0xb70f9f83 in g_thread_proxy (data=0xb5803e90) at /build/buildd/glib2.0-2.33.10/./glib/gthread.c:801
        thread = 0xb5803e90
#8  0xb7378d4c 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 = {-1221025792, 0, 4001536, -1249905688, -750331468, 1136320944}, 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  0xb74778ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 3 (Thread 0xb610fb40 (LWP 1565)):
#0  0xb7706424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7469160 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  0xb70e3dbb in g_poll (fds=0xb5800c68, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.33.10/./glib/gpoll.c:132
No locals.
#3  0xb70d5360 in g_main_context_poll (n_fds=1, fds=0xb5800c68, timeout=<optimized out>, context=0x9f9aeb8, priority=<optimized out>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3576
        poll_func = <optimized out>
#4  g_main_context_iterate (context=context@entry=0x9f9aeb8, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3277
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb5800c68
#5  0xb70d54c1 in g_main_context_iteration (context=context@entry=0x9f9aeb8, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3343
        retval = <optimized out>
#6  0xb61488b0 in dconf_gdbus_worker_thread (user_data=0x9f9aeb8) at dconf-gdbus-thread.c:81
        context = 0x9f9aeb8
#7  0xb70f9f83 in g_thread_proxy (data=0x9f6fbb0) at /build/buildd/glib2.0-2.33.10/./glib/gthread.c:801
        thread = 0x9f6fbb0
#8  0xb7378d4c in start_thread (arg=0xb610fb40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb610fb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1221025792, 0, 4001536, -1240402968, 222747058, 1136320944}, 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  0xb74778ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 2 (Thread 0xb6f5fb40 (LWP 1555)):
#0  0xb7706424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7469160 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  0xb70e3dbb in g_poll (fds=0xb6600478, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.33.10/./glib/gpoll.c:132
No locals.
#3  0xb70d5360 in g_main_context_poll (n_fds=1, fds=0xb6600478, timeout=<optimized out>, context=0x9f6f780, priority=<optimized out>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3576
        poll_func = <optimized out>
#4  g_main_context_iterate (context=context@entry=0x9f6f780, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3277
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb6600478
#5  0xb70d54c1 in g_main_context_iteration (context=0x9f6f780, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:3343
        retval = <optimized out>
#6  0xb70d552e in glib_worker_main (data=0x0) at /build/buildd/glib2.0-2.33.10/./glib/gmain.c:5019
No locals.
#7  0xb70f9f83 in g_thread_proxy (data=0x9f6fa00) at /build/buildd/glib2.0-2.33.10/./glib/gthread.c:801
        thread = 0x9f6fa00
#8  0xb7378d4c in start_thread (arg=0xb6f5fb40) at pthread_create.c:308
        __res = <optimized out>
        pd = 0xb6f5fb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1221025792, 0, 4001536, -1225395224, -951658061, 1136320944}, 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  0xb74778ae in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
.
Thread 1 (Thread 0xb6f61980 (LWP 1553)):
#0  __memmove_ssse3_rep () at ../sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S:1803
No locals.
#1  0xb4c0f000 in ?? () from /tmp/tmpOYa06N/usr/lib/i386-linux-gnu/dri/swrast_dri.so
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)