Description of problem:
It appeared right after booting, when the desktop appeared.

Additional info:
reporter:       libreport-2.1.4
WARNING: at arch/x86/mm/pat.c:452 io_reserve_memtype+0x11f/0x130()
Hardware name: 8187S6U
Modules linked in: i915(+) video i2c_algo_bit e1000(+) drm_kms_helper drm i2c_core sunrpc
Pid: 192, comm: systemd-udevd Not tainted 3.6.10-4.fc18.i686 #1
Call Trace:
 [<c043c642>] warn_slowpath_common+0x72/0xa0
 [<c043297f>] ? io_reserve_memtype+0x11f/0x130
 [<c043297f>] ? io_reserve_memtype+0x11f/0x130
 [<c043c692>] warn_slowpath_null+0x22/0x30
 [<c043297f>] io_reserve_memtype+0x11f/0x130
 [<c0532a3c>] ? kmem_cache_alloc_trace+0x2c/0x130
 [<f8379b6c>] ? i915_driver_load+0x18c/0xb20 [i915]
 [<c04340af>] iomap_create_wc+0x1f/0x40
 [<f8379b84>] i915_driver_load+0x1a4/0xb20 [i915]
 [<f8254418>] ? drm_get_minor+0x238/0x2c0 [drm]
 [<f825658b>] drm_get_pci_dev+0x13b/0x270 [drm]
 [<f83c0807>] i915_pci_probe+0x4b/0x55 [i915]
 [<c0696700>] pci_device_probe+0xa0/0x150
 [<c0738099>] driver_probe_device+0x79/0x350
 [<c069649e>] ? pci_match_device+0x9e/0xb0
 [<c0738401>] __driver_attach+0x91/0xa0
 [<c0738370>] ? driver_probe_device+0x350/0x350
 [<c07365e2>] bus_for_each_dev+0x42/0x80
 [<c0737ace>] driver_attach+0x1e/0x20
 [<c0738370>] ? driver_probe_device+0x350/0x350
 [<c073777f>] bus_add_driver+0x17f/0x290
 [<c06967b0>] ? pci_device_probe+0x150/0x150
 [<c06967b0>] ? pci_device_probe+0x150/0x150
 [<c07389fa>] driver_register+0x6a/0x160
 [<c0430665>] ? __cpa_flush_range+0x25/0x30
 [<f81e1000>] ? 0xf81e0fff
 [<c0695752>] __pci_register_driver+0x42/0xb0
 [<f81e1000>] ? 0xf81e0fff
 [<f82567bd>] drm_pci_init+0xfd/0x110 [drm]
 [<f81e1000>] ? 0xf81e0fff
 [<f81e105e>] i915_init+0x5e/0x60 [i915]
 [<c0401202>] do_one_initcall+0x112/0x160
 [<c0496da2>] ? set_section_ro_nx+0x62/0x80
 [<c04987cd>] sys_init_module+0x10d/0x1ec0
 [<c096219f>] sysenter_do_call+0x12/0x28
 [<c0950000>] ? powernowk8_init+0x181/0x189