.
Thread 8 (LWP 6141):
#0  0x00007fc2f5338490 in ?? ()
No symbol table info available.
#1  0x0001000100000005 in ?? ()
No symbol table info available.
#2  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 7 (LWP 6144):
#0  0x00007fc2f2de871d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fc2f3328d64 in g_main_context_poll (priority=2147483647, n_fds=2, fds=0x7fc2e00008c0, timeout=1000, context=0x1a7a9c0) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:4005
        poll_func = 0x7fc2f3337860 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x1a7a9c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:3706
        max_priority = 2147483647
        timeout = 1000
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7fc2e00008c0
#3  0x00007fc2f3328e6c in g_main_context_iteration (context=0x1a7a9c0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:3772
        retval = <optimized out>
#4  0x00007fc2f3328ea9 in glib_worker_main (data=<optimized out>) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:5502
No locals.
#5  0x00007fc2f334dc35 in g_thread_proxy (data=0x1ba4680) at /build/buildd/glib2.0-2.39.4/./glib/gthread.c:765
        thread = 0x1ba4680
#6  0x00007fc2f30ca182 in start_thread (arg=0x7fc2e97f0700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2e97f0700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140475117799168, 8496571147130004999, 0, 0, 140475117799872, 140475117799168, -8472343417097787897, -8472391953007352313}, 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"
#7  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 6 (LWP 6143):
#0  0x00007fc2f2de871d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fc2f3328d64 in g_main_context_poll (priority=2147483647, n_fds=5, fds=0x7fc2dc001170, timeout=-1, context=0x7fc2e4011ac0) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:4005
        poll_func = 0x7fc2f3337860 <g_poll>
#2  g_main_context_iterate (context=0x7fc2e4011ac0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:3706
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 5
        allocated_nfds = 7
        fds = 0x7fc2dc001170
#3  0x00007fc2f332908a in g_main_loop_run (loop=0x7fc2e4011a50) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:3905
        __FUNCTION__ = "g_main_loop_run"
#4  0x00007fc2f3d76ff6 in gdbus_shared_thread_func (user_data=0x7fc2e4011a90) at /build/buildd/glib2.0-2.39.4/./gio/gdbusprivate.c:273
        data = 0x7fc2e4011a90
#5  0x00007fc2f334dc35 in g_thread_proxy (data=0x19e9190) at /build/buildd/glib2.0-2.39.4/./glib/gthread.c:765
        thread = 0x19e9190
#6  0x00007fc2f30ca182 in start_thread (arg=0x7fc2ebbd1700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2ebbd1700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140475155420928, 8496571147130004999, 0, 0, 140475155421632, 140475155420928, -8472338477348526585, -8472391953007352313}, 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"
#7  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 5 (LWP 6142):
#0  0x00007fc2f2de871d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fc2f3328d64 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fc2e40010e0, timeout=-1, context=0x19e58e0) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:4005
        poll_func = 0x7fc2f3337860 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x19e58e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:3706
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7fc2e40010e0
#3  0x00007fc2f3328e6c in g_main_context_iteration (context=0x19e58e0, may_block=1) at /build/buildd/glib2.0-2.39.4/./glib/gmain.c:3772
        retval = <optimized out>
#4  0x00007fc2ec3da15d in ?? () from /tmp/apport_sandbox_crtFdi/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#5  0x00007fc2f334dc35 in g_thread_proxy (data=0x1999050) at /build/buildd/glib2.0-2.39.4/./glib/gthread.c:765
        thread = 0x1999050
#6  0x00007fc2f30ca182 in start_thread (arg=0x7fc2ec3d2700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2ec3d2700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140475163813632, 8496571147130004999, 0, 0, 140475163814336, 140475163813632, -8472332979253516793, -8472391953007352313}, 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"
#7  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 4 (LWP 6186):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007fc2f33699c5 in g_cond_wait_until (cond=cond@entry=0x22916f8, mutex=mutex@entry=0x22916f0, end_time=end_time@entry=335695346) at /build/buildd/glib2.0-2.39.4/./glib/gthread-posix.c:873
        ts = {tv_sec = 335, tv_nsec = 695346000}
        status = <optimized out>
#2  0x00007fc2f32fef21 in g_async_queue_pop_intern_unlocked (queue=0x22916f0, wait=wait@entry=1, end_time=335695346) at /build/buildd/glib2.0-2.39.4/./glib/gasyncqueue.c:422
        retval = <optimized out>
        __FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007fc2f32ff4e8 in g_async_queue_timeout_pop_unlocked (queue=<optimized out>, timeout=timeout@entry=500000) at /build/buildd/glib2.0-2.39.4/./glib/gasyncqueue.c:570
        end_time = <optimized out>
#4  0x00007fc2f334e592 in g_thread_pool_wait_for_new_task (pool=0x2295d70) at /build/buildd/glib2.0-2.39.4/./glib/gthreadpool.c:262
        task = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.39.4/./glib/gthreadpool.c:296
        task = 0x1dbe2c0
        pool = 0x2295d70
#6  0x00007fc2f334dc35 in g_thread_proxy (data=0x7fc2dc003990) at /build/buildd/glib2.0-2.39.4/./glib/gthread.c:765
        thread = 0x7fc2dc003990
#7  0x00007fc2f30ca182 in start_thread (arg=0x7fc2b043f700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2b043f700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140474157627136, 8496571147130004999, 0, 0, 140474157627840, 140474157627136, -8472252802414647801, -8472391953007352313}, 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"
#8  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 3 (LWP 6177):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fc2c1610f83 in pipe_semaphore_wait (sema=0x1ec4100) at ../../../../../../src/gallium/auxiliary/os/os_thread.h:434
No locals.
#2  thread_function (init_data=0x1ec4068) at ../../../../../../src/gallium/drivers/llvmpipe/lp_rast.c:774
        task = 0x1ec4068
        rast = 0x1ec4050
        fpstate = <optimized out>
#3  0x00007fc2f30ca182 in start_thread (arg=0x7fc2c0be4700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2c0be4700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140474434078464, 8496571147130004999, 0, 0, 140474434079168, 140474434078464, -8472287889613101561, -8472391953007352313}, 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"
#4  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 2 (LWP 6178):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fc2c1610f83 in pipe_semaphore_wait (sema=0x1ec4258) at ../../../../../../src/gallium/auxiliary/os/os_thread.h:434
No locals.
#2  thread_function (init_data=0x1ec41c0) at ../../../../../../src/gallium/drivers/llvmpipe/lp_rast.c:774
        task = 0x1ec41c0
        rast = 0x1ec4050
        fpstate = <optimized out>
#3  0x00007fc2f30ca182 in start_thread (arg=0x7fc2b2661700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2b2661700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140474193417984, 8496571147130004999, 0, 0, 140474193418688, 140474193417984, -8472248652402498041, -8472391953007352313}, 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"
#4  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 1 (LWP 6176):
#0  __GI___pthread_mutex_lock (mutex=0x0) at ../nptl/pthread_mutex_lock.c:66
        __PRETTY_FUNCTION__ = "__pthread_mutex_lock"
        type = 0
#1  0x00007fc2c2b0beda in crLockMutex (mutex=<optimized out>) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/GuestHost/OpenGL/util/threads.c:166
No locals.
#2  0x00007fc2c2b01051 in crHashtableLock (h=<optimized out>) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/GuestHost/OpenGL/util/hash.c:434
No locals.
#3  0x00007fc2c2df3374 in stubSyncThreadProc (ThreadSelf=0x1eb4a00, pvUser=<optimized out>) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/Additions/common/crOpenGL/load.c:898
No locals.
#4  0x00007fc2c2e149cc in rtThreadMain (pThread=0x1eb4a00, NativeThread=<optimized out>, pszThreadName=<optimized out>) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/Runtime/common/misc/thread.cpp:712
        rc = <optimized out>
#5  0x00007fc2c2e18e0c in rtThreadNativeMain (pvArgs=0x1eb4a00) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/Runtime/r3/posix/thread-posix.cpp:324
        pThread = 0x1eb4a00
        Self = 140474448500480
        rc = <optimized out>
        __PRETTY_FUNCTION__ = "void* rtThreadNativeMain(void*)"
#6  0x00007fc2f30ca182 in start_thread (arg=0x7fc2c19a5700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fc2c19a5700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140474448500480, 8496571147130004999, 0, 0, 140474448501184, 140474448500480, -8472289847581317625, -8472391953007352313}, 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"
#7  0x00007fc2f2df5b2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.