.
Thread 5 (LWP 2227):
#0  0xb76fe424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7458eeb in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#2  0xb70caa3b in poll (__timeout=-1, __nfds=11, __fds=0x9b82778) at /usr/include/i386-linux-gnu/bits/poll2.h:46
No locals.
#3  g_poll (fds=fds@entry=0x9b82778, nfds=nfds@entry=11, timeout=timeout@entry=-1) at /build/buildd/glib2.0-2.38.0/./glib/gpoll.c:132
No locals.
#4  0xb70bbb58 in g_main_context_poll (priority=2147483647, n_fds=11, fds=0x9b82778, timeout=-1, context=0xb580b880) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:4006
        poll_func = 0xb70caa10 <g_poll>
#5  g_main_context_iterate (context=0xb580b880, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 11
        allocated_nfds = <optimized out>
        fds = 0x9b82778
#6  0xb70bc03b in g_main_loop_run (loop=0xb580b848) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3906
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#7  0xb625a0ea in gdbus_shared_thread_func (user_data=0xb580b868) at /build/buildd/glib2.0-2.38.0/./gio/gdbusprivate.c:278
        data = 0xb580b868
#8  0xb70e1c3a in g_thread_proxy (data=0x8e5a5b0) at /build/buildd/glib2.0-2.38.0/./glib/gthread.c:798
        thread = 0x8e5a5b0
#9  0xb7056d78 in start_thread (arg=0xb57ffb40) at pthread_create.c:311
        __res = <optimized out>
        pd = 0xb57ffb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1224310784, 0, 4001536, -1249905688, -1982861017, 2096331555}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0xb74684fe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
No locals.
.
Thread 4 (LWP 6058):
#0  0xb76fe424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb705a84b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
No locals.
#2  0xb7475e9c in __pthread_cond_wait (cond=0x9c06580, mutex=0x9d0b0f0) at forward.c:149
        __p = <optimized out>
#3  0xb70fef70 in g_cond_wait (cond=cond@entry=0x91d6ea8, mutex=mutex@entry=0x91d6ea0) at /build/buildd/glib2.0-2.38.0/./glib/gthread-posix.c:759
        _g_boolean_var_ = <optimized out>
        status = <optimized out>
#4  0xb708f7df in g_async_queue_pop_intern_unlocked (queue=queue@entry=0x91d6ea0, wait=wait@entry=1, end_time=-1) at /build/buildd/glib2.0-2.38.0/./glib/gasyncqueue.c:421
        retval = <optimized out>
        __FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#5  0xb708fdc0 in g_async_queue_pop_unlocked (queue=0x91d6ea0) at /build/buildd/glib2.0-2.38.0/./glib/gasyncqueue.c:477
        __PRETTY_FUNCTION__ = "g_async_queue_pop_unlocked"
#6  0xb70e271b in g_thread_pool_wait_for_new_task (pool=0x9c910d0) at /build/buildd/glib2.0-2.38.0/./glib/gthreadpool.c:247
        task = <optimized out>
#7  g_thread_pool_thread_proxy (data=0x9c910d0) at /build/buildd/glib2.0-2.38.0/./glib/gthreadpool.c:298
        task = 0x1
        pool = 0x9c910d0
#8  0xb70e1c3a in g_thread_proxy (data=0xb6606150) at /build/buildd/glib2.0-2.38.0/./glib/gthread.c:798
        thread = 0xb6606150
#9  0xb7056d78 in start_thread (arg=0xa1e94b40) at pthread_create.c:311
        __res = <optimized out>
        pd = 0xa1e94b40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1224310784, 0, 4001536, -1578548248, -1531973362, 2096331555}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0xb74684fe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
No locals.
.
Thread 3 (LWP 2216):
#0  0xb76fe424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7458eeb in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#2  0xb70caa3b in poll (__timeout=-1, __nfds=1, __fds=0xb5800c68) at /usr/include/i386-linux-gnu/bits/poll2.h:46
No locals.
#3  g_poll (fds=fds@entry=0xb5800c68, nfds=nfds@entry=1, timeout=timeout@entry=-1) at /build/buildd/glib2.0-2.38.0/./glib/gpoll.c:132
No locals.
#4  0xb70bbb58 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0xb5800c68, timeout=-1, context=0x8e85428) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:4006
        poll_func = 0xb70caa10 <g_poll>
#5  g_main_context_iterate (context=context@entry=0x8e85428, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0xb5800c68
#6  0xb70bbc98 in g_main_context_iteration (context=context@entry=0x8e85428, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3773
        retval = <optimized out>
#7  0xb65f9f70 in dconf_gdbus_worker_thread (user_data=0x8e85428) at dconf-gdbus-thread.c:81
        context = 0x8e85428
#8  0xb70e1c3a in g_thread_proxy (data=0x8e59f80) at /build/buildd/glib2.0-2.38.0/./glib/gthread.c:798
        thread = 0x8e59f80
#9  0xb7056d78 in start_thread (arg=0xb610db40) at pthread_create.c:311
        __res = <optimized out>
        pd = 0xb610db40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1224310784, 0, 4001536, -1240411160, 1469051169, 2096331555}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0xb74684fe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
No locals.
.
Thread 2 (LWP 2199):
#0  0xb76fe424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7458eeb in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#2  0xb70caa3b in poll (__timeout=-1, __nfds=2, __fds=0xb6600488) at /usr/include/i386-linux-gnu/bits/poll2.h:46
No locals.
#3  g_poll (fds=fds@entry=0xb6600488, nfds=nfds@entry=2, timeout=timeout@entry=-1) at /build/buildd/glib2.0-2.38.0/./glib/gpoll.c:132
No locals.
#4  0xb70bbb58 in g_main_context_poll (priority=2147483647, n_fds=2, fds=0xb6600488, timeout=-1, context=0x8e59d00) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:4006
        poll_func = 0xb70caa10 <g_poll>
#5  g_main_context_iterate (context=context@entry=0x8e59d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0xb6600488
#6  0xb70bbc98 in g_main_context_iteration (context=0x8e59d00, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3773
        retval = <optimized out>
#7  0xb70bbd1e in glib_worker_main (data=0x0) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:5472
No locals.
#8  0xb70e1c3a in g_thread_proxy (data=0x8e59e00) at /build/buildd/glib2.0-2.38.0/./glib/gthread.c:798
        thread = 0x8e59e00
#9  0xb7056d78 in start_thread (arg=0xb6f1bb40) at pthread_create.c:311
        __res = <optimized out>
        pd = 0xb6f1bb40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1224310784, 0, 4001536, -1225673752, -1789923040, 2096331555}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0xb74684fe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
No locals.
.
Thread 1 (LWP 2186):
#0  0xb032adc0 in compiz::MinimizedWindowHandler::minimize() () from /tmp/apport_sandbox_2delpI/usr/lib/compiz/libunityshell.so
No symbol table info available.
#1  0xb031cf66 in unity::UnityWindow::computeGlowQuads(nux::Rect const&, GLTexture::List const&, int) () from /tmp/apport_sandbox_2delpI/usr/lib/compiz/libunityshell.so
No symbol table info available.
#2  0x0a6a2fa8 in ?? ()
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)