X11/Remote: malloc(): memory corruption

Running any Qt application over remote/X11 crashes or at least I can see malloc compaining about memory errors.

With setting "export MALLOC_CHECK_=2" I have the following gdb stack:

#0 0xb68d98c5 in raise () from /lib/libc.so.6
#1 0xb68db1d5 in abort () from /lib/libc.so.6
#2 0xb691bf4b in malloc_printerr () from /lib/libc.so.6
#3 0xb692040b in free () from /lib/libc.so.6
#4 0xb34f9bf3 in XIFreeDeviceInfo () from /usr/lib/libXi.so.6
#5 0xb355b1b6 in QXcbConnection::xi2SetupTabletDevices (this=0x8083ae8)
at qxcbconnection_xi2.cpp:386
#6 0xb355a974 in QXcbConnection::initializeXInput2 (this=0x8083ae8)
at qxcbconnection_xi2.cpp:93
#7 0xb353ad55 in QXcbConnection::QXcbConnection (this=0x8083ae8, nativeInterface=0x80835e8,
displayName=0x0) at qxcbconnection.cpp:332
#8 0xb35411a1 in QXcbIntegration::QXcbIntegration (this=0x807a4c8, parameters=...)
at qxcbintegration.cpp:103
#9 0xb3556589 in QXcbIntegrationPlugin::create (this=0x807a3b0, system=..., parameters=...)
at main.cpp:58
#10 0xb71e6b7a in qLoadPlugin1<QPlatformIntegration, QPlatformIntegrationPlugin, QStringList> (
loader=0x8079580, key=..., parameter1=...)
at ../../include/QtCore/5.0.0/QtCore/private/../../../../../src/corelib/plugin/qfactoryloader_p.h:115
#11 0xb71e6585 in QPlatformIntegrationFactory::create (platform=..., paramList=...,
platformPluginPath=...) at kernel/qplatformintegrationfactory.cpp:69
#12 0xb71ecc34 in init_platform (pluginArgument=..., platformPluginPath=...)
at kernel/qguiapplication.cpp:712
#13 0xb71ed893 in QGuiApplicationPrivate::createPlatformIntegration (this=0x8075cc0)
at kernel/qguiapplication.cpp:840
#14 0xb71ed8ed in QGuiApplicationPrivate::createEventDispatcher (this=0x8075cc0)
at kernel/qguiapplication.cpp:847
#15 0xb7774fd1 in QApplicationPrivate::createEventDispatcher (this=0x8075cc0)
at kernel/qapplication_qpa.cpp:84
#16 0xb6e89c12 in QCoreApplication::init (this=0xbffff1d8) at kernel/qcoreapplication.cpp:609
#17 0xb6e89a16 in QCoreApplication::QCoreApplication (this=0xbffff1d8, p=...)
at kernel/qcoreapplication.cpp:546
#18 0xb71ebfc2 in QGuiApplication::QGuiApplication (this=0xbffff1d8, p=...)
at kernel/qguiapplication.cpp:355
#19 0xb770b503 in QApplication::QApplication (this=0xbffff1d8, argc=@0xbffff1f0, argv=
0xbffff284, _internal=327680) at kernel/qapplication.cpp:563
#20 0x08051d70 in main (argc=1, argv=0xbffff284) at main.cpp:6

#5 0xb355b1b6 in QXcbConnection::xi2SetupTabletDevices (this=0x8083ae8)
at qxcbconnection_xi2.cpp:386
386 XIFreeDeviceInfo(dev);
(gdb) p dev
$3 = (XIDeviceInfo *) 0x8094950
(gdb) p *dev
$4 =

{deviceid = 2, name = 0x8097db0 "Virtual core pointer", use = 1, attachment = 3, enabled = 1, num_classes = 5, classes = 0x8097dd0}