Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 23804 at drivers/gpu/drm/i915/intel_pm.c:6585 intel_display_power_put+0x15c/0x170 [i915]()
Modules linked in: uas usb_storage cpufreq_stats rfcomm uvcvideo videobuf2_vmalloc videobuf2_core videobuf2_memops v4l2_common videodev media btusb bnep bluetooth fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast 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 vfat fat snd_hda_codec_idt snd_hda_codec_generic arc4 snd_hda_codec_hdmi iwlmvm intel_rapl x86_pkg_temp_thermal snd_hda_intel coretemp kvm_intel mac80211
 kvm snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device iTCO_wdt iTCO_vendor_support iwlwifi hp_wmi sparse_keymap ppdev rtsx_pci_ms snd_pcm snd_timer cfg80211 memstick hp_accel mei_me snd lpc_ich lis3lv02d mei serio_raw input_polldev hp_wireless tpm_infineon rfkill wmi soundcore shpchp parport_pc parport i2c_i801 tpm_tis tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt radeon i915 rtsx_pci_sdmmc mmc_core ttm crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper ghash_clmulni_intel e1000e drm rtsx_pci mfd_core ptp pps_core video [last unloaded: joydev]
CPU: 0 PID: 23804 Comm: kworker/0:1 Not tainted 3.18.2-200.fc21.x86_64 #1
Hardware name: Hewlett-Packard HP ZBook 14/198F, BIOS L71 Ver. 01.12 06/25/2014
Workqueue: events edp_panel_vdd_work [i915]
 0000000000000000 0000000046651619 ffff8801ab1e7d28 ffffffff8175d976
 0000000000000000 0000000000000000 ffff8801ab1e7d68 ffffffff81099181
 ffff8801ab1e7d48 ffff88023ed9002c 000000000000000b ffff88023ed98848
Call Trace:
 [<ffffffff8175d976>] dump_stack+0x46/0x58
 [<ffffffff81099181>] warn_slowpath_common+0x81/0xa0
 [<ffffffff8109929a>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa0160aac>] intel_display_power_put+0x15c/0x170 [i915]
 [<ffffffffa01d046d>] pps_unlock+0x3d/0x50 [i915]
 [<ffffffffa01d2889>] edp_panel_vdd_work+0x39/0x40 [i915]
 [<ffffffff810b240d>] process_one_work+0x14d/0x400
 [<ffffffff810b2d9b>] worker_thread+0x6b/0x4a0
 [<ffffffff810b2d30>] ? rescuer_thread+0x2a0/0x2a0
 [<ffffffff810b7fea>] kthread+0xea/0x100
 [<ffffffff810b7f00>] ? kthread_create_on_node+0x1b0/0x1b0
 [<ffffffff8176463c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810b7f00>] ? kthread_create_on_node+0x1b0/0x1b0