Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 1 PID: 0 at drivers/gpu/drm/i915/intel_display.c:9713 intel_check_page_flip+0xdb/0xf0 [i915]()
Kicking stuck page flip: queued at 57458, now 57462
Modules linked in: rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netbios_ns nf_conntrack_broadcast ccm ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack rtsx_usb_ms memstick 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 bnep vfat fat iTCO_wdt uvcvideo videobuf2_vmalloc videobuf2_core videobuf2_memops intel_rapl ppdev v4l2_common iosf_mbi videodev x86_pkg_temp_thermal iTCO_vendor_support media coretemp arc4 rtl8723be btcoexist rtl8723_common rtl_pci rtlwifi mac80211 kvm_intel btusb cfg80211
 bluetooth serio_raw kvm snd_soc_rt5640 snd_soc_rl6231 snd_soc_core snd_hda_codec_conexant snd_hda_codec_generic snd_hda_codec_hdmi snd_compress snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd_soc_sst_acpi lpc_ich ideapad_laptop sparse_keymap i2c_hid rfkill regmap_i2c mei_me parport_pc i2c_designware_platform parport dw_dmac soc_button_array dw_dmac_core i2c_designware_core mei i2c_i801 shpchp snd soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_multipath dm_crypt nouveau i915 mxm_wmi ttm i2c_algo_bit rtsx_usb_sdmmc drm_kms_helper crct10dif_pclmul drm crc32_pclmul crc32c_intel r8169 ghash_clmulni_intel mii rtsx_usb mfd_core sdhci_acpi sdhci mmc_core wmi video
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.19.1-201.fc21.x86_64 #1
Hardware name: LENOVO 20366/Lancer 4A5, BIOS 9BCN29WW 10/20/2014
 0000000000000000 0447aad2dcaaf952 ffff88024f243d08 ffffffff8176d865
 0000000000000000 ffff88024f243d60 ffff88024f243d48 ffffffff8109bc0a
 ffff88024f243d48 ffff880242da5800 ffff880242d7f000 0000000000000000
Call Trace:
 <IRQ>  [<ffffffff8176d865>] dump_stack+0x45/0x57
 [<ffffffff8109bc0a>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff8109bc95>] warn_slowpath_fmt+0x55/0x70
 [<ffffffffa01be42b>] intel_check_page_flip+0xdb/0xf0 [i915]
 [<ffffffffa018b8e8>] ironlake_irq_handler+0x428/0xff0 [i915]
 [<ffffffff81608620>] ? show_no_turbo+0xb0/0xb0
 [<ffffffff81100b89>] ? call_timer_fn+0x39/0x110
 [<ffffffff810f2957>] handle_irq_event_percpu+0x77/0x1a0
 [<ffffffff810f2abb>] handle_irq_event+0x3b/0x60
 [<ffffffff810f5c7e>] handle_edge_irq+0x6e/0x120
 [<ffffffff81017444>] handle_irq+0x74/0x140
 [<ffffffff810bb45a>] ? atomic_notifier_call_chain+0x1a/0x20
 [<ffffffff81776dbf>] do_IRQ+0x4f/0xf0
 [<ffffffff81774bad>] common_interrupt+0x6d/0x6d
 <EOI>  [<ffffffff81609476>] ? cpuidle_enter_state+0x66/0x160
 [<ffffffff81609461>] ? cpuidle_enter_state+0x51/0x160
 [<ffffffff81609657>] cpuidle_enter+0x17/0x20
 [<ffffffff810de001>] cpu_startup_entry+0x321/0x3c0
 [<ffffffff8104af7a>] start_secondary+0x1aa/0x1f0

Potential duplicate: bug 1195870