#1  0x00007f194c003568 in drmIoctl (fd=8, request=3221775460, 
    arg=0x7fff35e5cfd0) at xf86drm.c:184
        ret = <value optimized out>
#2  0x00007f194c0058dc in drmCommandWriteRead (fd=<value optimized out>, 
    drmCommandIndex=<value optimized out>, data=<value optimized out>, 
    size=<value optimized out>) at xf86drm.c:2447
        request = <value optimized out>
#3  0x00007f194b8ecb39 in bo_wait (boi=0x25235f0) at radeon_bo_gem.c:214
        args = {handle = 22, pad = 0}
        ret = -512
#4  0x00007f194b8ecb84 in bo_map (boi=0x25235f0, write=<value optimized out>)
    at radeon_bo_gem.c:187
        bo_gem = 0x25235f0
        args = {handle = 22, pad = 0, offset = 0, size = 10368000, 
          addr_ptr = 4351700992}
        r = <value optimized out>
        ptr = <value optimized out>
#5  0x00007f194bb90b45 in RADEONPrepareAccess_CS (pPix=0x2523b50, 
    index=<value optimized out>) at radeon_exa.c:305
        pScreen = <value optimized out>
        pScrn = 0x222af70
        info = 0x222e2d0
        driver_priv = 0x25235d0
        ret = <value optimized out>
#6  0x00007f194b4b4b8f in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#7  0x00007f194b4b89db in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#8  0x00007f194b4b5262 in ?? () from /usr/lib/xorg/modules/libexa.so
No symbol table info available.
#9  0x00000000004a0a60 in ?? ()
No symbol table info available.
#10 0x000000000044e573 in ChangeWindowAttributes ()
No symbol table info available.
#11 0x0000000000424568 in ?? ()
No symbol table info available.
#12 0x000000000042a2e1 in ?? ()
No symbol table info available.
#13 0x000000000042123e in _start ()
No symbol table info available.