Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/i915/intel_display.c:9916 intel_check_page_flip+0xc2/0xd0 [i915]()
Kicking stuck page flip: queued at 287461, now 287467
Modules linked in: fuse ccm dm_crypt arc4 intel_rapl ath9k x86_pkg_temp_thermal coretemp ath9k_common kvm_intel ath9k_hw kvm snd_hda_codec_hdmi uvcvideo snd_hda_codec_realtek ath snd_hda_codec_generic mac80211 videobuf2_vmalloc videobuf2_core videobuf2_memops snd_hda_intel crct10dif_pclmul v4l2_common snd_hda_controller crc32_pclmul asus_nb_wmi iTCO_wdt snd_hda_codec crc32c_intel ath3k btusb asus_wmi snd_hwdep cfg80211 bluetooth videodev sparse_keymap iTCO_vendor_support snd_seq snd_seq_device ghash_clmulni_intel joydev media snd_pcm serio_raw mei_me mei rfkill i2c_i801 lpc_ich shpchp snd_timer snd mfd_core soundcore wmi binfmt_misc i915 i2c_algo_bit drm_kms_helper drm video
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.8-201.fc21.x86_64 #1
Hardware name: ASUSTeK Computer Inc. UX21E/UX21E, BIOS UX21E.214 11/22/2012
 0000000000000000 4d9d800264a7d5c9 ffff88013f403cf8 ffffffff8175b3fc
 0000000000000000 ffff88013f403d50 ffff88013f403d38 ffffffff81098e91
 ffff88013f403d48 ffff88013888b000 ffff880137d6f000 0000000000000000
Call Trace:
 <IRQ>  [<ffffffff8175b3fc>] dump_stack+0x46/0x58
 [<ffffffff81098e91>] warn_slowpath_common+0x81/0xa0
 [<ffffffff81098f05>] warn_slowpath_fmt+0x55/0x70
 [<ffffffffa00faba2>] intel_check_page_flip+0xc2/0xd0 [i915]
 [<ffffffffa00cc865>] ironlake_irq_handler+0x315/0x10a0 [i915]
 [<ffffffff810c4d73>] ? try_to_wake_up+0xd3/0x330
 [<ffffffff810ee9c7>] handle_irq_event_percpu+0x77/0x1a0
 [<ffffffff810eeb2b>] handle_irq_event+0x3b/0x60
 [<ffffffff810f1cde>] handle_edge_irq+0x6e/0x120
 [<ffffffff81016374>] handle_irq+0x74/0x140
 [<ffffffff810b85aa>] ? atomic_notifier_call_chain+0x1a/0x20
 [<ffffffff81764af1>] do_IRQ+0x51/0xf0
 [<ffffffff8176292d>] common_interrupt+0x6d/0x6d
 <EOI>  [<ffffffff815e6983>] ? cpuidle_enter_state+0x63/0x160
 [<ffffffff815e6971>] ? cpuidle_enter_state+0x51/0x160
 [<ffffffff815e6b67>] cpuidle_enter+0x17/0x20
 [<ffffffff810da022>] cpu_startup_entry+0x322/0x3c0
 [<ffffffff817516e7>] rest_init+0x77/0x80
 [<ffffffff81d4c029>] start_kernel+0x4a1/0x4c2
 [<ffffffff81d4b120>] ? early_idt_handlers+0x120/0x120
 [<ffffffff81d4b4d7>] x86_64_start_reservations+0x2a/0x2c
 [<ffffffff81d4b62b>] x86_64_start_kernel+0x152/0x175

Potential duplicate: bug 1195870