Program received signal SIGSEGV, Segmentation fault.
glamor_set_window_pixmap (win=0x1a61f70, pPixmap=0x1c95010)
    at glamor_window.c:81
81	        if (GLAMOR_PIXMAP_PRIV_IS_PICTURE(pixmap_priv) &&
(gdb) bt
#0  glamor_set_window_pixmap (win=0x1a61f70, pPixmap=0x1c95010)
    at glamor_window.c:81
#1  0x0000000000516279 in damageSetWindowPixmap (pWindow=0x1a61f70, 
    pPixmap=0x1c95010) at damage.c:1534
#2  0x000000000055e230 in DRI2SetWindowPixmap (pWin=0x1a61f70, 
    pPix=<optimized out>) at dri2.c:1393
#3  0x000000000051280e in present_set_tree_pixmap_visit (window=0x1a61f70, 
    data=0x7fff4d5ba620) at present.c:372
#4  0x0000000000462d79 in TraverseTree (pWin=pWin@entry=0x1a61f70, 
    func=func@entry=0x5127d0 <present_set_tree_pixmap_visit>, 
    data=data@entry=0x7fff4d5ba620) at window.c:316
#5  0x0000000000512856 in present_set_tree_pixmap (window=0x1a61f70, 
    pixmap=0x1c95010) at present.c:386
#6  0x000000000051373a in present_execute (vblank=0x2036040, ust=1011167301, 
    crtc_msc=60501) at present.c:633
#7  0x0000000000513a82 in present_event_notify (event_id=<optimized out>, 
    ust=<optimized out>, msc=<optimized out>) at present.c:483
#8  0x00007f2807a8361f in ms_present_vblank_handler (msc=<optimized out>, 
    usec=<optimized out>, data=0x2022a80) at present.c:107
#9  0x00007f2807a8388a in ms_drm_handler (fd=<optimized out>, 
    frame=<optimized out>, sec=<optimized out>, usec=<optimized out>, 
    user_ptr=<optimized out>) at vblank.c:377
#10 0x00007f280dce7bd6 in drmHandleEvent ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#11 0x000000000043d9dd in WakeupHandler (result=result@entry=1, 
    pReadmask=pReadmask@entry=0x82c660 <LastSelectMask>) at dixutils.c:423
#12 0x000000000058912b in WaitForSomething (
    pClientsReady=pClientsReady@entry=0x189e290) at WaitFor.c:229
#13 0x0000000000438e41 in Dispatch () at dispatch.c:358
#14 0x000000000043ceeb in dix_main (argc=9, argv=0x7fff4d5baf68, 
    envp=<optimized out>) at main.c:298
#15 0x00007f280c909ec5 in __libc_start_main (main=0x4284b0 <main>, argc=9, 
    argv=0x7fff4d5baf68, init=<optimized out>, fini=<optimized out>, 
    rtld_fini=<optimized out>, stack_end=0x7fff4d5baf58) at libc-start.c:287
#16 0x00000000004284de in _start ()
(gdb)