Additional info:
reporter:       libreport-2.2.3
WARNING: CPU: 0 PID: 6396 at drivers/gpu/drm/i915/intel_pm.c:6317 intel_display_power_put+0x135/0x160 [i915]()
PM: Syncing filesystems ... done.
Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache vfat fat mmc_block ccm fuse ipt_MASQUERADE xt_CHECKSUM tun 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 arc4 rtsx_pci_ms memstick rtsx_pci_sdmmc mmc_core iTCO_wdt iTCO_vendor_support usblp x86_pkg_temp_thermal coretemp iwlmvm uvcvideo mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_core kvm_intel snd_hda_codec_realtek snd_hda_codec_generic kvm v4l2_common snd_hda_codec_hdmi videodev media iwlwifi microcode snd_hda_intel joydev btusb snd_hda_controller bluetooth i2c_i801 snd_hda_codec snd_hwdep cfg80211 serio_raw snd_seq snd_seq_device rtsx_pci snd_pcm tpm_tis wmi tpm thinkpad_acpi snd_timer rfkill snd mei_me lpc_ich shpchp mei soundcore mfd_core binfmt_misc nfsd auth_rpcgss nfs_acl lockd sunrpc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel e1000e i2c_algo_bit drm_kms_helper ptp drm pps_core video
CPU: 0 PID: 6396 Comm: kworker/0:1 Not tainted 3.17.4-200.fc20.x86_64 #1
Hardware name: LENOVO 20ALCTO1WW/20ALCTO1WW, BIOS GIET77WW (2.27 ) 10/02/2014
Workqueue: events edp_panel_vdd_work [i915]
 0000000000000000 00000000e4dcb6d4 ffff8801078e3d28 ffffffff81726d2c
 0000000000000000 ffff8801078e3d60 ffffffff81092e6d ffff88022ff6002c
 00000000000c7204 0000000000000001 ffff88022ff68610 ffff88022ff60000
Call Trace:
 [<ffffffff81726d2c>] dump_stack+0x45/0x56
 [<ffffffff81092e6d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff81092f9a>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa0107145>] intel_display_power_put+0x135/0x160 [i915]
 [<ffffffffa0171654>] edp_panel_vdd_off_sync+0xf4/0x1c0 [i915]
 [<ffffffffa0171784>] edp_panel_vdd_work+0x34/0x50 [i915]
 [<ffffffff810aadb9>] process_one_work+0x149/0x3d0
 [<ffffffff810ab43b>] worker_thread+0x11b/0x490
 [<ffffffff810ab320>] ? rescuer_thread+0x2e0/0x2e0
 [<ffffffff810b0498>] kthread+0xd8/0xf0
 [<ffffffff810b03c0>] ? kthread_create_on_node+0x190/0x190
 [<ffffffff8172e33c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810b03c0>] ? kthread_create_on_node+0x190/0x190