Bug 1195975

Additional info:
reporter:       libreport-2.4.0
WARNING: CPU: 3 PID: 4437 at drivers/gpu/drm/i915/i915_gem.c:4285 i915_gem_object_unpin_fence+0x75/0xa0 [i915]()
WARN_ON(dev_priv->fence_regs[obj->fence_reg].pin_count <= 0)
Modules linked in: fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun 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 bnep arc4 intel_rapl iosf_mbi hid_sensor_rotation hid_sensor_incl_3d x86_pkg_temp_thermal coretemp hid_sensor_magn_3d kvm_intel hid_sensor_als hid_sensor_gyro_3d hid_sensor_accel_3d hid_sensor_trigger hid_sensor_iio_common industrialio_triggered_buffer kfifo_buf kvm industrialio iTCO_wdt iTCO_vendor_support iwlmvm crct10dif_pclmul mac80211 crc32_pclmul
 vfat fat btusb uvcvideo bluetooth videobuf2_vmalloc snd_hda_codec_hdmi ghash_clmulni_intel videobuf2_core snd_hda_codec_realtek snd_hda_codec_generic iwlwifi videobuf2_memops v4l2_common videodev serio_raw snd_hda_intel cfg80211 snd_hda_controller snd_hda_codec i2c_i801 snd_hwdep snd_seq media hid_multitouch hid_sensor_hub snd_seq_device snd_pcm ideapad_laptop sparse_keymap dw_dmac rfkill i2c_hid dw_dmac_core snd_timer int3402_thermal mei_me int3400_thermal int3403_thermal i2c_designware_platform i2c_designware_core soc_button_array acpi_thermal_rel snd mei soundcore lpc_ich processor_thermal_device shpchp int340x_thermal_zone mfd_core nfsd auth_rpcgss nfs_acl lockd grace sunrpc btrfs xor i915 raid6_pq i2c_algo_bit drm_kms_helper drm crc32c_intel sdhci_acpi sdhci mmc_core video
CPU: 3 PID: 4437 Comm: Xorg Not tainted 4.0.0-0.rc1.git0.1.fc22.x86_64 #1
Hardware name: LENOVO 20266/Yoga2, BIOS 76CN31WW 10/31/2013
 0000000000000000 00000000abd9b34d ffff88022ec576f8 ffffffff8177fc48
 0000000000000000 ffff88022ec57750 ffff88022ec57738 ffffffff8109c7ba
 ffff88022ec57798 ffff88007f5f0000 ffff880249534700 ffffffffa01c7f60
Call Trace:
 [<ffffffff8177fc48>] dump_stack+0x45/0x57
 [<ffffffff8109c7ba>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff8109c845>] warn_slowpath_fmt+0x55/0x70
 [<ffffffffa01388f5>] i915_gem_object_unpin_fence+0x75/0xa0 [i915]
 [<ffffffffa01744c5>] intel_unpin_fb_obj+0x25/0x60 [i915]
 [<ffffffffa018088d>] intel_cleanup_plane_fb+0x3d/0x80 [i915]
 [<ffffffffa00da8be>] drm_plane_helper_commit+0x1fe/0x300 [drm_kms_helper]
 [<ffffffffa00daa5a>] drm_plane_helper_update+0x9a/0xf0 [drm_kms_helper]
 [<ffffffffa0180396>] intel_crtc_set_config+0xdb6/0x1010 [i915]
 [<ffffffffa007e056>] drm_mode_set_config_internal+0x66/0x100 [drm]
 [<ffffffffa00e3738>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
 [<ffffffff811c0650>] ? zone_statistics+0x80/0xa0
 [<ffffffffa00e5789>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
 [<ffffffff81656717>] ? __alloc_skb+0x87/0x210
 [<ffffffffa00e5802>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
 [<ffffffffa018fa8a>] intel_fbdev_set_par+0x1a/0x60 [i915]
 [<ffffffff81417b06>] fb_set_var+0x236/0x480
 [<ffffffffa027e341>] ? btrfs_set_bit_hook+0xb1/0x220 [btrfs]
 [<ffffffffa0299244>] ? __set_extent_bit+0x3f4/0x570 [btrfs]
 [<ffffffffa0298b68>] ? merge_state.part.33+0x138/0x140 [btrfs]
 [<ffffffff8124b1e7>] ? inode_to_bdi+0x27/0x60
 [<ffffffff8140d60c>] fbcon_blank+0x34c/0x390
 [<ffffffff8132fd8b>] ? cred_has_capability+0x6b/0x130
 [<ffffffff814944da>] do_unblank_screen+0xda/0x1d0
 [<ffffffff8148913b>] vt_ioctl+0x57b/0x1430
 [<ffffffff8120159f>] ? __slab_free+0xbf/0x260
 [<ffffffff8147be01>] tty_ioctl+0x3f1/0xc30
 [<ffffffff8123d2c7>] ? evict+0x107/0x190
 [<ffffffff8132aaa3>] ? selinux_file_free_security+0x23/0x30
 [<ffffffff81235056>] do_vfs_ioctl+0x2c6/0x4d0
 [<ffffffff812352e1>] SyS_ioctl+0x81/0xa0
 [<ffffffff81786029>] system_call_fastpath+0x12/0x17