Sometimes crash in qmlscene with asynchronous Image element

GNU gdb (GDB) 7.5-ubuntu
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Reading symbols from /home/aavit/qt/qt-s5/qtbase/bin/qmlscene...done.
[New LWP 22209]
[New LWP 22206]
[New LWP 22205]
[New LWP 22210]
[New LWP 22208]
[New LWP 22207]

warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `qmlscene async.qml'.
Program terminated with signal 11, Segmentation fault.
#0  malloc_consolidate (av=0x7f7208000020) at malloc.c:4238
4238    malloc.c: No such file or directory.
(gdb) where
#0  malloc_consolidate (av=0x7f7208000020) at malloc.c:4238
#1  0x00007f7228dd7b19 in malloc_consolidate (av=0x7f7208000020) at malloc.c:4215
#2  _int_free (av=0x7f7208000020, p=<optimized out>, have_lock=0) at malloc.c:4146
#3  0x00007f7227eace36 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f7227eb428f in ?? () from /usr/lib/nvidia-current/libGL.so.1
#5  0x00007f7227eac445 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f722bb60918 in dl_open_worker (a=0x7f721da4d0f0) at dl-open.c:294
#7  0x00007f722bb5c186 in _dl_catch_error (objname=0x7f721da4d138, errstring=0x7f721da4d140, mallocedp=0x7f721da4d14f, operate=0x7f722bb60710 <dl_open_worker>, 
    args=0x7f721da4d0f0) at dl-error.c:178
#8  0x00007f722bb6032a in _dl_open (file=0x7f720800bbf8 "/home/aavit/qt/qt-s5/qtbase/plugins/imageformats/libqsvg.so", mode=-2147483647, caller_dlopen=
    0x7f72299a1165 <QLibraryPrivate::load_sys()+1935>, nsid=-2, argc=2, argv=<optimized out>, env=0x7fffe24120a0) at dl-open.c:639
#9  0x00007f7226f7ff26 in dlopen_doit (a=0x7f721da4d310) at dlopen.c:67
#10 0x00007f722bb5c186 in _dl_catch_error (objname=0x7f7208006800, errstring=0x7f7208006808, mallocedp=0x7f72080067f8, operate=0x7f7226f7fec0 <dlopen_doit>, 
    args=0x7f721da4d310) at dl-error.c:178
#11 0x00007f7226f8052f in _dlerror_run (operate=0x7f7226f7fec0 <dlopen_doit>, args=0x7f721da4d310) at dlerror.c:164
#12 0x00007f7226f7ffc1 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:88
#13 0x00007f72299a1165 in QLibraryPrivate::load_sys (this=0x7f72080034a0) at plugin/qlibrary_unix.cpp:230
#14 0x00007f722999c0ad in QLibraryPrivate::load (this=0x7f72080034a0) at plugin/qlibrary.cpp:400
#15 0x00007f722999c3f6 in QLibraryPrivate::loadPlugin (this=0x7f72080034a0) at plugin/qlibrary.cpp:455
#16 0x00007f722999552b in QFactoryLoader::instance (this=0x7f7208002c40, index=3) at plugin/qfactoryloader.cpp:254
#17 0x00007f7229fb5c2d in createReadHandlerHelper (device=0x7f721da4dbb0, format=..., autoDetectImageFormat=true, ignoresFormatAndExtension=false)
    at image/qimagereader.cpp:300
#18 0x00007f7229fb6e64 in QImageReaderPrivate::initHandler (this=0x7f7208002c60) at image/qimagereader.cpp:594
#19 0x00007f7229fb7468 in QImageReader::format (this=0x7f721da4da20) at image/qimagereader.cpp:697
#20 0x00007f722b5b9f3b in readImage (url=..., dev=0x7f721da4dbb0, image=0x7f721da4dbd0, errorString=0x7f721da4db50, impsize=0x7f721da4db60, requestSize=...)
    at util/qquickpixmapcache.cpp:327
#21 0x00007f722b5bb96e in QQuickPixmapReader::processJob (this=0x199b240, runningJob=0x1997ce0, url=..., requestSize=...) at util/qquickpixmapcache.cpp:582
#22 0x00007f722b5baffd in QQuickPixmapReader::processJobs (this=0x199b240) at util/qquickpixmapcache.cpp:506
#23 0x00007f722b5bbfd2 in QQuickPixmapReader::run (this=0x199b240) at util/qquickpixmapcache.cpp:665
#24 0x00007f72297ba36b in QThreadPrivate::start (arg=0x199b240) at thread/qthread_unix.cpp:333
#25 0x00007f7227eb6734 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#26 0x00007f7227bf5e9a in start_thread (arg=0x7f721da4e700) at pthread_create.c:308
#27 0x00007f7228e4bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#28 0x0000000000000000 in ?? ()