Additional info:
reporter:       libreport-2.2.1
WARNING: CPU: 3 PID: 2663 at drivers/gpu/drm/i915/intel_uncore.c:125 gen6_gt_check_fifodbg.isra.9+0x38/0x50 [i915]()
MMIO read or write has been dropped ffffffff
Modules linked in: fuse ipt_MASQUERADE ccm xt_CHECKSUM ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw x86_pkg_temp_thermal arc4 iwldvm btusb coretemp mac80211 bluetooth iwlwifi snd_hda_codec_realtek e1000e uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev snd_hda_intel media snd_hda_codec snd_hwdep iTCO_wdt kvm_intel joydev snd_seq snd_seq_device kvm cfg80211 serio_raw snd_pcm iTCO_vendor_support ptp tpm_tis sdhci_pci sdhci mmc_core pps_core i2c_i801 lpc_ich mfd_core tpm mei_me mei shpchp microcode snd_page_alloc snd_timer wmi thinkpad_acpi snd soundcore rfkill binfmt_misc uinput xfs libcrc32c dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper ghash_clmulni_intel drm firewire_ohci firewire_core crc_itu_t i2c_core video
CPU: 3 PID: 2663 Comm: kworker/u16:11 Not tainted 3.13.9-100.fc19.x86_64 #1
Hardware name: LENOVO 24293E8/24293E8, BIOS G4ET94WW (2.54 ) 05/23/2013
Workqueue: i915 gen6_force_wake_work [i915]
 0000000000000009 ffff8801f3ebfd38 ffffffff81681444 ffff8801f3ebfd80
 ffff8801f3ebfd70 ffffffff8106d3bd ffff880036cd4020 ffff880036cd4028
 0000000000000202 ffff880210197400 0000000000000200 ffff8801f3ebfdd0
Call Trace:
 [<ffffffff81681444>] dump_stack+0x45/0x56
 [<ffffffff8106d3bd>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8106d42c>] warn_slowpath_fmt+0x4c/0x50
 [<ffffffff810125b6>] ? __switch_to+0x126/0x4c0
 [<ffffffffa0150bd8>] gen6_gt_check_fifodbg.isra.9+0x38/0x50 [i915]
 [<ffffffffa0150c7b>] __gen6_gt_force_wake_mt_put+0x2b/0x30 [i915]
 [<ffffffffa01509a7>] gen6_force_wake_work+0x37/0x50 [i915]
 [<ffffffff81087aa6>] process_one_work+0x176/0x430
 [<ffffffff810886db>] worker_thread+0x11b/0x3a0
 [<ffffffff810885c0>] ? rescuer_thread+0x350/0x350
 [<ffffffff8108f1a2>] kthread+0xd2/0xf0
 [<ffffffff8108f0d0>] ? insert_kthread_work+0x40/0x40
 [<ffffffff8169033c>] ret_from_fork+0x7c/0xb0
 [<ffffffff8108f0d0>] ? insert_kthread_work+0x40/0x40