This however doesn't inspire confidence (though everything works):

data!!! vma_start:0x7f244f081000,handle:0xe1130000
[16294.482489] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.482492] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25b000,handle:0xe1135000
[16294.482494] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.482496] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25c000,handle:0xe1134000
[16294.482499] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.482501] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25d000,handle:0xe112c000
[16294.486250] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486254] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2446c10000,handle:0xf5000000
[16294.486258] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486260] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2447516000,handle:0xf5000000
[16294.486264] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486266] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2448a4e000,handle:0xe102c000
[16294.486269] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486271] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f24493ff000,handle:0xe0000000
[16294.486286] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486288] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f081000,handle:0xe1130000
[16294.486292] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486294] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25b000,handle:0xe1135000
[16294.486297] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486299] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25c000,handle:0xe1134000
[16294.486301] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.486303] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25d000,handle:0xe112c000
[16294.561529] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561535] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2446c10000,handle:0xf5000000
[16294.561602] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561604] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2447516000,handle:0xf5000000
[16294.561641] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561643] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2448a4e000,handle:0xe102c000
[16294.561712] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561715] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f24493ff000,handle:0xe0000000
[16294.561867] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561869] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f081000,handle:0xe1130000
[16294.561886] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561888] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25b000,handle:0xe1135000
[16294.561891] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561893] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25c000,handle:0xe1134000
[16294.561895] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.561897] [fglrx:drm_vm_open] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25d000,handle:0xe112c000
[16294.565254] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565259] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2446c10000,handle:0xf5000000
[16294.565263] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565265] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2447516000,handle:0xf5000000
[16294.565268] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565270] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2448a4e000,handle:0xe102c000
[16294.565273] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565275] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f24493ff000,handle:0xe0000000
[16294.565290] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565292] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f081000,handle:0xe1130000
[16294.565296] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565298] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25b000,handle:0xe1135000
[16294.565300] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565302] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25c000,handle:0xe1134000
[16294.565305] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16294.565307] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f244f25d000,handle:0xe112c000
[16306.946821] [fglrx:firegl_find_any_map] *ERROR* Invalid map handle!
[16306.946827] [fglrx:drm_vm_close] *ERROR* map not found -> inconsistent kernel data!!! vma_start:0x7f2448a4e000,handle:0xe102c000