Additional info:
reporter:       libreport-2.2.3
WARNING: CPU: 0 PID: 1105 at drivers/gpu/drm/i915/intel_display.c:3313 intel_crtc_wait_for_pending_flips+0x198/0x1a0 [i915]()
Modules linked in: rfcomm fuse ccm fcoe libfcoe libfc scsi_transport_fc 8021q garp mrp scsi_tgt ip6t_rpfilter ip6t_REJECT xt_conntrack bnep 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 x86_pkg_temp_thermal coretemp kvm_intel kvm arc4 iwldvm mac80211 uvcvideo crct10dif_pclmul iwlwifi iTCO_wdt cfg80211 videobuf2_vmalloc videobuf2_memops crc32_pclmul videobuf2_core dell_wmi sparse_keymap crc32c_intel snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm v4l2_common iTCO_vendor_support btusb bluetooth wmi ghash_clmulni_intel videodev dell_laptop snd_timer rfkill dcdbas snd media lpc_ich soundcore mei_me mei shpchp microcode serio_raw i2c_i801 mfd_core binfmt_misc i915 r8169 ums_realtek uas mii i2c_algo_bit drm_kms_helper usb_storage drm i2c_core video analog gameport joydev
CPU: 0 PID: 1105 Comm: Xorg Not tainted 3.16.3-200.fc20.x86_64 #1
Hardware name: Dell Inc.          Dell System Inspiron N7110/0YH79Y, BIOS A08 10/24/2011
 0000000000000000 00000000da4c0367 ffff880133deba38 ffffffff81707091
 0000000000000000 ffff880133deba70 ffffffff8108d0ad 0000000000000000
 ffff88013820c000 ffff8800361a8210 ffff8800360c9000 ffff8800360c9000
Call Trace:
 [<ffffffff81707091>] dump_stack+0x45/0x56
 [<ffffffff8108d0ad>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8108d1da>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa0128db8>] intel_crtc_wait_for_pending_flips+0x198/0x1a0 [i915]
 [<ffffffff810d4610>] ? abort_exclusive_wait+0xb0/0xb0
 [<ffffffffa012c0b3>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
 [<ffffffffa012c67d>] ironlake_crtc_disable+0x4d/0x930 [i915]
 [<ffffffff811d66ac>] ? kmem_cache_alloc_trace+0x3c/0x200
 [<ffffffffa012ddc7>] __intel_set_mode+0x2a7/0x1590 [i915]
 [<ffffffffa0131756>] intel_set_mode+0x16/0x30 [i915]
 [<ffffffffa013268d>] intel_crtc_set_config+0x8ed/0xdb0 [i915]
 [<ffffffffa004e6a1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
 [<ffffffffa004f1a1>] drm_framebuffer_remove+0x101/0x160 [drm]
 [<ffffffffa0052f28>] drm_mode_rmfb+0xd8/0x100 [drm]
 [<ffffffffa0042a6c>] drm_ioctl+0x1ec/0x660 [drm]
 [<ffffffff8120912f>] ? __d_free+0x3f/0x60
 [<ffffffff81209184>] ? dentry_free+0x34/0x40
 [<ffffffff8120a23c>] ? __dentry_kill+0x14c/0x1c0
 [<ffffffff812068a0>] do_vfs_ioctl+0x2e0/0x4a0
 [<ffffffff81206ae1>] SyS_ioctl+0x81/0xa0
 [<ffffffff81125ed6>] ? __audit_syscall_exit+0x1f6/0x2a0
 [<ffffffff8170e6e9>] system_call_fastpath+0x16/0x1b