Additional info:
libreport version: 2.0.14
abrt_version:   2.0.13
cmdline:        rd.md=0 rd.lvm=0 rd.dm=0 SYSFONT=True  KEYTABLE=uk rd.luks=0 root=UUID=80e2d0e1-c6a9-4413-a892-71729a17d63d ro LANG=C rhgb quiet
kernel:         3.5.6-1.fc17.x86_64

backtrace:
:WARNING: at drivers/gpu/drm/i915/i915_drv.c:485 gen6_gt_check_fifodbg.isra.4+0x40/0x50 [i915]()
:Hardware name: 12943QG
:MMIO read or write has been dropped 3
:Modules linked in: hidp fuse lockd sunrpc rfcomm bnep ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_netbios_ns nf_conntrack_broadcast ip6table_filter nf_conntrack_ipv4 nf_defrag_ipv4 ip6_tables xt_state nf_conntrack snd_hda_codec_hdmi snd_hda_codec_conexant vfat fat binfmt_misc arc4 coretemp kvm_intel kvm cdc_ncm usbnet snd_hda_intel mii snd_hda_codec microcode snd_hwdep snd_seq snd_seq_device cdc_acm cdc_wdm btusb uvcvideo bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_core videodev snd_pcm media i2c_i801 iwlwifi mac80211 lpc_ich snd_page_alloc thinkpad_acpi snd_timer mfd_core cfg80211 snd mei e1000e soundcore rfkill uinput crc32c_intel ghash_clmulni_intel sdhci_pci sdhci mmc_core wmi i915 video i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: scsi_wait_scan]
:Pid: 721, comm: Xorg Not tainted 3.5.6-1.fc17.x86_64 #1
:Call Trace:
: [<ffffffff8105864f>] warn_slowpath_common+0x7f/0xc0
: [<ffffffff81058746>] warn_slowpath_fmt+0x46/0x50
: [<ffffffff812da39a>] ? delay_tsc+0x4a/0x80
: [<ffffffffa0085080>] ? i915_gem_busy_ioctl+0x120/0x120 [i915]
: [<ffffffffa006f340>] gen6_gt_check_fifodbg.isra.4+0x40/0x50 [i915]
: [<ffffffffa006f8fe>] __gen6_gt_force_wake_put+0x1e/0x20 [i915]
: [<ffffffffa006fd5c>] i915_read32+0xec/0x110 [i915]
: [<ffffffffa00b2ca0>] intel_ring_get_active_head+0x30/0x40 [i915]
: [<ffffffffa00b2cf5>] gen6_ring_get_seqno+0x45/0x50 [i915]
: [<ffffffffa00806ee>] __wait_seqno+0x3e/0x270 [i915]
: [<ffffffff814e7d50>] ? sock_unregister+0x60/0x60
: [<ffffffffa008512a>] i915_gem_throttle_ioctl+0xaa/0xe0 [i915]
: [<ffffffffa00154f3>] drm_ioctl+0x4d3/0x580 [drm]
: [<ffffffffa0085080>] ? i915_gem_busy_ioctl+0x120/0x120 [i915]
: [<ffffffff812d6a44>] ? timerqueue_del+0x34/0x90
: [<ffffffff811996a9>] do_vfs_ioctl+0x99/0x580
: [<ffffffff812794ca>] ? inode_has_perm.isra.31.constprop.61+0x2a/0x30
: [<ffffffff8127aaa7>] ? file_has_perm+0x97/0xb0
: [<ffffffff8105f5f6>] ? do_setitimer+0xd6/0x230
: [<ffffffff81199c29>] sys_ioctl+0x99/0xa0
: [<ffffffff81615869>] system_call_fastpath+0x16/0x1b