Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 1067 at drivers/gpu/drm/i915/intel_display.c:3361 intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]()
Modules linked in: vfat fat bnep bluetooth fuse ccm nf_conntrack_netbios_ns nf_conntrack_broadcast 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 arc4 rt2800pci rt2800mmio rt2800lib rt2x00pci rt2x00mmio rt2x00lib coretemp eeprom_93cx6 gpio_ich kvm_intel mac80211 uas cfg80211 iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel crc_ccitt snd_hda_controller rfkill snd_hda_codec ppdev kvm lpc_ich usb_storage snd_hwdep snd_seq snd_seq_device snd_pcm
 snd_timer serio_raw i2c_i801 snd tpm_tis tpm soundcore parport_pc parport acpi_cpufreq binfmt_misc i915 r8169 i2c_algo_bit video ata_generic drm_kms_helper pata_acpi drm mii
CPU: 0 PID: 1067 Comm: Xorg.bin Not tainted 3.17.7-300.fc21.i686 #1
Hardware name: langchao 12345/IPM41-D3, BIOS 080015  04/30/2010
 00000000 89bf9e4d 00000000 ef757ccc c0a40630 00000000 ef757d00 c0455b42
 c0bf6e28 00000000 0000042b f81648c4 00000d21 f811234a 00000d21 f811234a
 00000000 f64d4530 f4266000 ef757d10 c0455c32 00000009 00000000 ef757d40
Call Trace:
 [<c0a40630>] dump_stack+0x41/0x52
 [<c0455b42>] warn_slowpath_common+0x82/0xa0
 [<f811234a>] ? intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]
 [<f811234a>] ? intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]
 [<c0455c32>] warn_slowpath_null+0x22/0x30
 [<f811234a>] intel_crtc_wait_for_pending_flips+0x16a/0x170 [i915]
 [<c048dde0>] ? abort_exclusive_wait+0x90/0x90
 [<f8119223>] intel_crtc_disable_planes+0x33/0x130 [i915]
 [<f80cba89>] ? intel_set_memory_cxsr+0x89/0x190 [i915]
 [<f811936c>] i9xx_crtc_disable+0x4c/0x570 [i915]
 [<f81007c9>] ? gen4_write32+0x49/0xc0 [i915]
 [<f8113ac9>] intel_crtc_control+0x49/0x110 [i915]
 [<f8113bec>] intel_crtc_update_dpms+0x5c/0x70 [i915]
 [<f812b8fb>] intel_crt_dpms+0x5b/0xa0 [i915]
 [<f7f8e4e2>] ? drm_mode_object_find+0x22/0x60 [drm]
 [<f7f9440a>] drm_mode_obj_set_property_ioctl+0x44a/0x470 [drm]
 [<f7f9446f>] drm_mode_connector_property_set_ioctl+0x3f/0x60 [drm]
 [<f7f94430>] ? drm_mode_obj_set_property_ioctl+0x470/0x470 [drm]
 [<f7f86415>] drm_ioctl+0x1f5/0x560 [drm]
 [<f7f94430>] ? drm_mode_obj_set_property_ioctl+0x470/0x470 [drm]
 [<c06df1b8>] ? timerqueue_add+0x58/0xc0
 [<c04b07be>] ? enqueue_hrtimer+0x1e/0x70
 [<c04b0d82>] ? __hrtimer_start_range_ns+0x302/0x4a0
 [<f7f86220>] ? drm_copy_field+0x70/0x70 [drm]
 [<c059d502>] do_vfs_ioctl+0x302/0x4f0
 [<c0673a52>] ? inode_has_perm.isra.30+0x32/0x50
 [<c0673bb7>] ? file_has_perm+0x97/0xa0
 [<c067450b>] ? selinux_file_ioctl+0x4b/0xe0
 [<c059d750>] SyS_ioctl+0x60/0x90
 [<c0a4659f>] sysenter_do_call+0x12/0x12