Description of problem:
Computer GUI hangs

Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 1206 at drivers/gpu/drm/i915/intel_display.c:3361 intel_crtc_wait_for_pending_flips+0x1b1/0x1c0 [i915]()
Modules linked in: rfcomm fuse xt_CHECKSUM ipt_MASQUERADE 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 bnep hid_logitech_dj iTCO_wdt iTCO_vendor_support ppdev vfat fat btrfs xor intel_rapl x86_pkg_temp_thermal coretemp kvm_intel kvm raid6_pq crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek crc32c_intel snd_hda_codec_generic ghash_clmulni_intel snd_emu10k1 snd_hda_codec_hdmi snd_util_mem snd_rawmidi snd_hda_intel serio_raw snd_ac97_codec
 snd_hda_controller snd_hda_codec snd_hwdep ac97_bus snd_seq i2c_i801 snd_seq_device emu10k1_gp snd_pcm gameport snd_timer mei_me lpc_ich snd mei soundcore shpchp mfd_core btusb parport_pc parport tpm_infineon bluetooth tpm_tis tpm rfkill nfsd auth_rpcgss nfs_acl lockd binfmt_misc sunrpc uas usb_storage i915 i2c_algo_bit drm_kms_helper drm firewire_ohci firewire_core r8169 crc_itu_t mii video
CPU: 0 PID: 1206 Comm: Xorg.bin Not tainted 3.17.8-300.fc21.x86_64+debug #1
Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014
 0000000000000000 0000000074a85047 ffff8807d4333c20 ffffffff81835c3f
 0000000000000000 ffff8807d4333c58 ffffffff810a348d 0000000000000000
 ffff8807ec609bd0 ffff8807ed18f000 ffff88009cab7000 ffff88009cab7000
Call Trace:
 [<ffffffff81835c3f>] dump_stack+0x4d/0x66
 [<ffffffff810a348d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff810a35ba>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa0128cd1>] intel_crtc_wait_for_pending_flips+0x1b1/0x1c0 [i915]
 [<ffffffff810f38e0>] ? abort_exclusive_wait+0xb0/0xb0
 [<ffffffffa0128d90>] intel_primary_plane_disable+0xb0/0xf0 [i915]
 [<ffffffffa0064702>] setplane_internal+0x192/0x2b0 [drm]
 [<ffffffffa00641f6>] ? _object_find+0x86/0x140 [drm]
 [<ffffffffa00679ed>] drm_mode_setplane+0x14d/0x1f0 [drm]
 [<ffffffffa005938f>] drm_ioctl+0x1df/0x6a0 [drm]
 [<ffffffff81385bf1>] ? inode_has_perm.isra.48+0x51/0x90
 [<ffffffff81275cd0>] do_vfs_ioctl+0x2f0/0x520
 [<ffffffff812821c5>] ? __fget+0x5/0x2f0
 [<ffffffff81275f81>] SyS_ioctl+0x81/0xa0
 [<ffffffff8183fee9>] system_call_fastpath+0x16/0x1b