*** Error in `/usr/lib/i386-linux-gnu/qt5/bin/qmlscene': double free or corruption (fasttop): 0xb1705650 ***
Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb20ffb40 (LWP 9235)]
0xb7fdd424 in ?? ()
(gdb) bt
#0 0xb7fdd424 in ?? ()
#1 0xb638bb0a in malloc_printerr (action=<optimized out>, str=0xb647da60 "double free or corruption (fasttop)", ptr=0xb1705650) at malloc.c:4996
#2 0xb638c765 in _int_free (av=0xb1700010, p=<optimized out>, have_lock=0) at malloc.c:3840
#3 0xb35b2845 in dri_destroy (gbm=0xb1705a30) at ../../../../src/gbm/backends/dri/gbm_dri.c:938
#4 0xb35adf44 in gbm_device_destroy (gbm=0xb1705a30) at ../../../../src/gbm/main/gbm.c:101
#5 0xb243c842 in mir::graphics::mesa::helpers::GBMHelper::~GBMHelper (this=0xb170cc88, __in_chrg=<optimized out>) at /build/buildd/mir-0.10.0+15.04.20150107.2/src/platforms/mesa/display_helpers.cpp:293
#6 0xb244f345 in mir::graphics::mesa::GuestPlatform::~GuestPlatform (this=0xb170cc7c, __in_chrg=<optimized out>) at /build/buildd/mir-0.10.0+15.04.20150107.2/src/platforms/mesa/guest_platform.h:36
#7 0xb244f110 in destroy<mir::graphics::mesa::GuestPlatform> (this=<optimized out>, __p=0xb170cc7c) at /usr/include/c++/4.9/ext/new_allocator.h:124
#8 _S_destroy<mir::graphics::mesa::GuestPlatform> (__p=0xb170cc7c, __a=...) at /usr/include/c++/4.9/bits/alloc_traits.h:282
#9 destroy<mir::graphics::mesa::GuestPlatform> (__a=..., __p=0xb170cc7c) at /usr/include/c++/4.9/bits/alloc_traits.h:411
#10 std::_Sp_counted_ptr_inplace<mir::graphics::mesa::GuestPlatform, std::allocator<mir::graphics::mesa::GuestPlatform>, (__gnu_cxx::_Lock_policy)2>::_M_dispose (this=0xb170cc70) at /usr/include/c++/4.9/bits/shared_ptr_base.h:524
#11 0xb3c26675 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release (this=0xb170cc70) at /usr/include/c++/4.9/bits/shared_ptr_base.h:149
#12 0xb3c29de4 in ~__shared_count (this=0xb1703174, __in_chrg=<optimized out>) at /usr/include/c++/4.9/bits/shared_ptr_base.h:666
#13 ~__shared_ptr (this=0xb1703170, __in_chrg=<optimized out>) at /usr/include/c++/4.9/bits/shared_ptr_base.h:914
#14 ~shared_ptr (this=0xb1703170, __in_chrg=<optimized out>) at /usr/include/c++/4.9/bits/shared_ptr.h:93
#15 Private (config=..., this=0xb1703168) at /build/buildd/mir-0.10.0+15.04.20150107.2/src/server/display_server.cpp:85
#16 mir::DisplayServer::DisplayServer (this=0xb20fed78, config=...) at /build/buildd/mir-0.10.0+15.04.20150107.2/src/server/display_server.cpp:200
#17 0xb3c25ede in mir::run_mir(mir::ServerConfiguration&, std::function<void (mir::DisplayServer&)>, std::function<void (int)> const&) (config=..., init=..., terminator=...) at /build/buildd/mir-0.10.0+15.04.20150107.2/src/server/run_mir.cpp:101
#18 0xb3c4c14a in mir::Server::run (this=0x8068e00) at /build/buildd/mir-0.10.0+15.04.20150107.2/src/server/server.cpp:375
#19 0xb3e82a03 in MirServerWorker::run() () from /usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so
#20 0xb3e846a8 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (MirServerWorker::*)()>::call(void (MirServerWorker::*)(), MirServerWorker*, void**) () from /usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so
#21 0xb3e8460d in void QtPrivate::FunctionPointer<void (MirServerWorker::*)()>::call<QtPrivate::List<>, void>(void (MirServerWorker::*)(), MirServerWorker*, void**) () from /usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so
#22 0xb3e8410a in QtPrivate::QSlotObject<void (MirServerWorker::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so
#23 0xb68de9c0 in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#24 0xb68e1d13 in QObject::event(QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#25 0xb68af1ec in QCoreApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#26 0xb68af385 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#27 0xb68b1604 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#28 0xb68b1d17 in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#29 0xb690a753 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#30 0xb5f60fc4 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#31 0xb5f612e9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#32 0xb5f613b6 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#33 0xb690ab64 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#34 0xb68ac523 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#35 0xb68ac96a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#36 0xb6680b7d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#37 0xb6680c58 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#38 0xb668602b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#39 0xb60a6f16 in start_thread (arg=0xb20ffb40) at pthread_create.c:309
#40 0xb6403b0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
(gdb)