Program received signal SIGABRT, Aborted.
[Switching to Thread -1211615552 (LWP 2903)]
0xbfffe410 in ?? ()
(gdb) bt
#0  0xbfffe410 in ?? ()
#1  0xbfb5ef7c in ?? ()
#2  0x00000006 in ?? ()
#3  0x00000b57 in ?? ()
#4  0xb7cacfc0 in raise () from /lib/i686/libc.so.6
#5  0xb7cae851 in abort () from /lib/i686/libc.so.6
#6  0xb7ce241b in __fsetlocking () from /lib/i686/libc.so.6
#7  0xb7ce9dad in mallopt () from /lib/i686/libc.so.6
#8  0xb7ce9f33 in free () from /lib/i686/libc.so.6
#9  0x081b03cf in Xfree ()
#10 0xb7ac61b6 in fbDestroyPixmap () from /usr/lib/xorg/modules/libfb.so
#11 0xb7af384b in XAADestroyInfoRec () from /usr/lib/xorg/modules/libxaa.so
#12 0x0815ac7a in DamageDestroy ()
#13 0xb7c21b80 in XvdiVideoStopped ()
   from /usr/lib/xorg/modules/extensions/libextmod.so
#14 0x08136491 in ShmExtensionInit ()
#15 0x081a812d in compFreePixmap ()
#16 0x081a79b4 in compCheckRedirect ()
#17 0x081a7a27 in compUnrealizeWindow ()
#18 0x0807400b in VisibleBoundingBoxFromPoint ()
#19 0x080745cb in UnmapWindow ()
#20 0x08076881 in ReparentWindow ()
#21 0x08088d23 in ProcReparentWindow ()
---Type <return> to continue, or q <return> to quit---
#22 0x0808931c in Dispatch ()
#23 0x080703aa in main ()