Additional info:
libreport version: 2.0.14
abrt_version:   2.0.13
cmdline:        BOOT_IMAGE=/vmlinuz-3.5.5-2.fc17.x86_64 root=/dev/mapper/vg_dachs-lv_root ro rd.md=0 rd.dm=0 KEYTABLE=us SYSFONT=True rd.luks=0 rd.lvm.lv=vg_dachs/lv_swap LANG=en_US.UTF-8 rd.lvm.lv=vg_dachs/lv_root rhgb quiet
kernel:         3.5.5-2.fc17.x86_64

kernel_tainted_long:
:Proprietary module has not been loaded.
:Taint on warning.

backtrace:
:WARNING: at drivers/gpu/drm/i915/i915_drv.c:485 gen6_gt_check_fifodbg.isra.4+0x40/0x50 [i915]()
:Hardware name:         
:MMIO read or write has been dropped 3
:Modules linked in: fuse bnep bluetooth rfkill nf_conntrack_ipv4 nf_defrag_ipv4 ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables coretemp e1000 shpchp snd_hda_codec_hdmi mei lpc_ich mfd_core i2c_i801 snd_hda_codec_realtek kvm_intel snd_hda_intel snd_hda_codec snd_hwdep kvm serio_raw snd_seq snd_seq_device snd_pcm snd_page_alloc snd_timer snd soundcore e1000e microcode uinput crc32c_intel ghash_clmulni_intel i915 video i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: scsi_wait_scan]
:Pid: 816, comm: Xorg Tainted: G        W    3.5.5-2.fc17.x86_64 #1
:Call Trace:
: [<ffffffff8105864f>] warn_slowpath_common+0x7f/0xc0
: [<ffffffff81058746>] warn_slowpath_fmt+0x46/0x50
: [<ffffffff812da35a>] ? 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]
: [<ffffffff8160a88d>] ? mutex_lock+0x1d/0x50
: [<ffffffffa008512a>] i915_gem_throttle_ioctl+0xaa/0xe0 [i915]
: [<ffffffffa00154f3>] drm_ioctl+0x4d3/0x580 [drm]
: [<ffffffffa0085080>] ? i915_gem_busy_ioctl+0x120/0x120 [i915]
: [<ffffffff8146e0bc>] ? input_event_to_user+0x5c/0x90
: [<ffffffff811996a9>] do_vfs_ioctl+0x99/0x580
: [<ffffffff8127948a>] ? inode_has_perm.isra.31.constprop.61+0x2a/0x30
: [<ffffffff8127aa67>] ? file_has_perm+0x97/0xb0
: [<ffffffff810d3a01>] ? __audit_syscall_exit+0x361/0x450
: [<ffffffff810130e0>] ? restore_sigcontext+0x120/0x160
: [<ffffffff81199c29>] sys_ioctl+0x99/0xa0
: [<ffffffff81615247>] ? int_check_syscall_exit_work+0x34/0x3d
: [<ffffffff81614fa9>] system_call_fastpath+0x16/0x1b