Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 785 at drivers/gpu/drm/i915/intel_display.c:9717 intel_check_page_flip+0xdb/0xf0 [i915]()
Kicking stuck page flip: queued at 3603324, now 3603328
Modules linked in: lp parport cpufreq_stats tun snd_seq_dummy rfcomm bnep fuse ccm xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 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 uvcvideo videobuf2_vmalloc videobuf2_core ath3k btusb videobuf2_memops v4l2_common bluetooth videodev media hid_multitouch vfat fat arc4 ath9k ath9k_common snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_intel_sst_acpi ath9k_hw
 snd_hda_intel intel_rapl snd_intel_sst_core snd_soc_sst_mfld_platform ath snd_hda_controller iTCO_wdt iTCO_vendor_support coretemp asus_nb_wmi snd_hda_codec snd_soc_core asus_wmi kvm_intel mac80211 sparse_keymap kvm snd_compress snd_hwdep rtsx_pci_ms snd_seq snd_seq_device cfg80211 snd_pcm crct10dif_pclmul memstick rfkill crc32_pclmul snd_timer crc32c_intel ghash_clmulni_intel serio_raw mei_txe snd_soc_sst_acpi snd soundcore shpchp mei i2c_i801 lpc_ich iosf_mbi wmi nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc i915 rtsx_pci_sdmmc mmc_core i2c_algo_bit drm_kms_helper drm rtsx_pci mfd_core r8169 mii video
CPU: 0 PID: 785 Comm: Xorg.bin Not tainted 3.19.5-200.fc21.x86_64 #1
Hardware name: ASUSTeK COMPUTER INC. X200MA/X200MA, BIOS X200MA.504 11/13/2014
 0000000000000000 00000000eb1f52cd ffff88013fc03ce8 ffffffff8176ead5
 0000000000000000 ffff88013fc03d40 ffff88013fc03d28 ffffffff8109bc1a
 ffff88013fc03d28 ffff88013a47a000 ffff88003fb12000 0000000000000000
Call Trace:
 <IRQ>  [<ffffffff8176ead5>] dump_stack+0x45/0x57
 [<ffffffff8109bc1a>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff8109bca5>] warn_slowpath_fmt+0x55/0x70
 [<ffffffffa017335b>] intel_check_page_flip+0xdb/0xf0 [i915]
 [<ffffffffa013c506>] valleyview_pipestat_irq_handler+0x206/0x210 [i915]
 [<ffffffffa0141d11>] valleyview_irq_handler+0xc1/0x170 [i915]
 [<ffffffff810f29f7>] handle_irq_event_percpu+0x77/0x1a0
 [<ffffffff810a021c>] ? __do_softirq+0x17c/0x2b0
 [<ffffffff810f2b5b>] handle_irq_event+0x3b/0x60
 [<ffffffff810f5d1e>] handle_edge_irq+0x6e/0x120
 [<ffffffff81017414>] handle_irq+0x74/0x140
 [<ffffffff8177803f>] do_IRQ+0x4f/0xf0
 [<ffffffff81775e2d>] common_interrupt+0x6d/0x6d
 <EOI>  [<ffffffff8139d98c>] ? strcmp+0x1c/0x40
 [<ffffffff810a0f0b>] find_next_iomem_res+0x9b/0x120
 [<ffffffff81067e70>] ? arch_pick_mmap_layout+0x280/0x280
 [<ffffffff810a188f>] walk_system_ram_range+0x8f/0xf0
 [<ffffffff81067f8b>] pat_pagerange_is_ram+0x7b/0xa0
 [<ffffffff8106805b>] lookup_memtype+0x3b/0xc0
 [<ffffffff81068fc1>] track_pfn_insert+0x31/0x60
 [<ffffffff811ce7f3>] vm_insert_pfn+0x73/0x130
 [<ffffffffa0134399>] i915_gem_fault+0x2d9/0x390 [i915]
 [<ffffffff811ca6aa>] __do_fault+0x4a/0xf0
 [<ffffffff811cd490>] do_shared_fault.isra.59+0x40/0x220
 [<ffffffff811cef1a>] handle_mm_fault+0x62a/0xff0
 [<ffffffffa004da9f>] ? drm_ioctl+0x1df/0x680 [drm]
 [<ffffffff81063ba4>] __do_page_fault+0x1f4/0x5b0
 [<ffffffff8122e318>] ? do_vfs_ioctl+0x2f8/0x500
 [<ffffffff81063f91>] do_page_fault+0x31/0x70
 [<ffffffff81777268>] page_fault+0x28/0x30

Potential duplicate: bug 1207169